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The Dissertation/Thesis Abstract

How To Write A High-Impact Abstract (With Examples)

By:   Madeline Fink (MSc) Reviewed By: Derek Jansen (MBA)   | June 2020

Overview: The Dissertation/Thesis Abstract

• What exactly is a dissertation (or thesis) abstract
• What’s the purpose and function of the abstract
• Why is the abstract so important
• How to write a high-quality dissertation abstract
• Example/sample of a quality abstract
• Quick tips to write a high-quality dissertation abstract

What is an abstract?

Simply put, the abstract in a dissertation or thesis is a short (but well structured) summary that outlines the most important points of your research (i.e. the key takeaways). The abstract is usually 1 paragraph or about 300-500 words long (about one page), but but this can vary between universities.

A quick note regarding terminology – strictly speaking, an abstract and an executive summary are two different things when it comes to academic publications. Typically, an abstract only states what the research will be about, but doesn’t explore the findings – whereas an executive summary covers both . However, in the context of a dissertation or thesis, the abstract usually covers both, providing a summary of the full project.

In terms of content, a good dissertation abstract usually covers the following points:

• The purpose of the research (what’s it about and why’s that important)
• The methodology (how you carried out the research)
• The key research findings (what answers you found)
• The implications of these findings (what these answers mean)

We’ll explain each of these in more detail a little later in this post. Buckle up.

What’s the purpose of the abstract?

A dissertation abstract has two main functions:

The first purpose is to  inform potential readers  of the main idea of your research without them having to read your entire piece of work. Specifically, it needs to communicate what your research is about (what were you trying to find out) and what your findings were . When readers are deciding whether to read your dissertation or thesis, the abstract is the first part they’ll consider. 

The second purpose of the abstract is to  inform search engines and dissertation databases  as they index your dissertation or thesis. The keywords and phrases in your abstract (as well as your keyword list) will often be used by these search engines to categorize your work and make it accessible to users. 

Simply put, your abstract is your shopfront display window – it’s what passers-by (both human and digital) will look at before deciding to step inside. 

Why’s it so important?

The short answer – because most people don’t have time to read your full dissertation or thesis! Time is money, after all…

If you think back to when you undertook your literature review , you’ll quickly realise just how important abstracts are! Researchers reviewing the literature on any given topic face a mountain of reading, so they need to optimise their approach. A good dissertation abstract gives the reader a “TLDR” version of your work – it helps them decide whether to continue to read it in its entirety. So, your abstract, as your shopfront display window, needs to “sell” your research to time-poor readers.

You might be thinking, “but I don’t plan to publish my dissertation”. Even so, you still need to provide an impactful abstract for your markers. Your ability to concisely summarise your work is one of the things they’re assessing, so it’s vital to invest time and effort into crafting an enticing shop window.  

A good abstract also has an added purpose for grad students . As a freshly minted graduate, your dissertation or thesis is often your most significant professional accomplishment and highlights where your unique expertise lies. Potential employers who want to know about this expertise are likely to only read the abstract (as opposed to reading your entire document) – so it needs to be good!

Think about it this way – if your thesis or dissertation were a book, then the abstract would be the blurb on the back cover. For better or worse, readers will absolutely judge your book by its cover .

How to write your abstract

As we touched on earlier, your abstract should cover four important aspects of your research: the purpose , methodology , findings , and implications . Therefore, the structure of your dissertation or thesis abstract needs to reflect these four essentials, in the same order.  Let’s take a closer look at each of them, step by step:

Step 1: Describe the purpose and value of your research

Here you need to concisely explain the purpose and value of your research. In other words, you need to explain what your research set out to discover and why that’s important. When stating the purpose of research, you need to clearly discuss the following:

• What were your research aims and research questions ?
• Why were these aims and questions important?

It’s essential to make this section extremely clear, concise and convincing . As the opening section, this is where you’ll “hook” your reader (marker) in and get them interested in your project. If you don’t put in the effort here, you’ll likely lose their interest.

Step 2: Briefly outline your study’s methodology

In this part of your abstract, you need to very briefly explain how you went about answering your research questions . In other words, what research design and methodology you adopted in your research. Some important questions to address here include:

• Did you take a qualitative or quantitative approach ?
• Who/what did your sample consist of?
• How did you collect your data?
• How did you analyse your data?

Simply put, this section needs to address the “ how ” of your research. It doesn’t need to be lengthy (this is just a summary, after all), but it should clearly address the four questions above.

Need a helping hand?

Step 3: Present your key findings

Next, you need to briefly highlight the key findings . Your research likely produced a wealth of data and findings, so there may be a temptation to ramble here. However, this section is just about the key findings – in other words, the answers to the original questions that you set out to address.

Again, brevity and clarity are important here. You need to concisely present the most important findings for your reader.

Step 4: Describe the implications of your research

Have you ever found yourself reading through a large report, struggling to figure out what all the findings mean in terms of the bigger picture? Well, that’s the purpose of the implications section – to highlight the “so what?” of your research. 

In this part of your abstract, you should address the following questions:

• What is the impact of your research findings on the industry /field investigated? In other words, what’s the impact on the “real world”. 
• What is the impact of your findings on the existing body of knowledge ? For example, do they support the existing research?
• What might your findings mean for future research conducted on your topic?

Example: Dissertation/thesis abstract

The U.S. citizenship application process is a legal and symbolic journey shaped by many cultural processes. This research project aims to bring to light the experiences of immigrants and citizenship applicants living in Dallas, Texas, to promote a better understanding of Dallas’ increasingly diverse population. Additionally, the purpose of this project is to provide insights to a specific client, the office of Dallas Welcoming Communities and Immigrant Affairs, about Dallas’ lawful permanent residents who are eligible for citizenship and their reasons for pursuing citizenship status . The data for this project was collected through observation at various citizenship workshops and community events, as well as through semi-structured interviews with 14 U.S. citizenship applicants . Reasons for applying for U.S. citizenship discussed in this project include a desire for membership in U.S. society, access to better educational and economic opportunities, improved ease of travel and the desire to vote. Barriers to the citizenship process discussed in this project include the amount of time one must dedicate to the application, lack of clear knowledge about the process and the financial cost of the application. Other themes include the effects of capital on applicant’s experience with the citizenship process, symbolic meanings of citizenship, transnationalism and ideas of deserving and undeserving surrounding the issues of residency and U.S. citizenship. These findings indicate the need for educational resources and mentorship for Dallas-area residents applying for U.S. citizenship, as well as a need for local government programs that foster a sense of community among citizenship applicants and their neighbours.

Practical tips for writing your abstract

When crafting the abstract for your dissertation or thesis, the most powerful technique you can use is to try and put yourself in the shoes of a potential reader. Assume the reader is not an expert in the field, but is interested in the research area. In other words, write for the intelligent layman, not for the seasoned topic expert.

Start by trying to answer the question “why should I read this dissertation?”

Remember the WWHS.

Make sure you include the  what , why ,  how , and  so what  of your research in your abstract:

• What you studied (who and where are included in this part)
• Why the topic was important
• How you designed your study (i.e. your research methodology)
• So what were the big findings and implications of your research

Keep it simple.

Use terminology appropriate to your field of study, but don’t overload your abstract with big words and jargon that cloud the meaning and make your writing difficult to digest. A good abstract should appeal to all levels of potential readers and should be a (relatively) easy read. Remember, you need to write for the intelligent layman.

Be specific.

When writing your abstract, clearly outline your most important findings and insights and don’t worry about “giving away” too much about your research – there’s no need to withhold information. This is the one way your abstract is not like a blurb on the back of a book – the reader should be able to clearly understand the key takeaways of your thesis or dissertation after reading the abstract. Of course, if they then want more detail, they need to step into the restaurant and try out the menu.

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How to Write an Abstract for a Dissertation

Published by Owen Ingram at August 11th, 2021 , Revised On September 20, 2023

Dissertation Abstract – Definition

The abstract is regarded as the foremost component of a dissertation. It will be your first chance to set precise expectations for the supervisor, examiner or graduate committee members. An abstract for a dissertation is the first real significant narrative of your work and is placed at the beginning of the dissertation paper.

Presented in a shortened form, an abstract is a very brief overview of your research .

In this article, we will uncover every piece of information you need to know to write an abstract.  

According to the online archives of Simon Fraser University research database, “an abstract is not merely an introduction in the sense of a preface, preamble, or advance organizer that prepares the reader for the thesis. In addition to that function, it must be capable of substituting for the whole thesis when there are insufficient time and space for the full text. ”

Do I Need to Write an Abstract?

You will be required to include an abstract at the beginning of your paper if you are working on your thesis, dissertation, research paper, or publishing a paper in any academic journal.

Even though the abstract appears right at the start of a dissertation paper, it is generally written at last. For it is only after you have compiled all the evidence and data, interpreted every piece of finding, backed your interpretation(s) with enough theoretical evidence and answered your research questions, that you can sum it all up in 150-200 words. The general length of an abstract.

 The table of contents is the section that immediately follows an abstract. Here is a guide on how to create a table of contents for the dissertation .

Your abstract should be an  entirely autonomous and independent text and never be an extract taken from within the paper’s original content. This also implies, indirectly, that it is unethical in research contexts to copy-paste chunks from within your own research in an abstract.

In particular, an abstract aims to provide an overview of research aim and objectives, methods of research employed, results obtained, findings, most salient interpretation(s), the conclusion and implication(s) of your research. Readers should be able to completely understand all aspects of your research work just by reading your abstract.

Also Read : How to Write Dissertation Discussion Chapter , How to Write a Remarkable Dissertation?

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How to Write a Dissertation Abstract

A dissertation abstract serves as a deal maker or breaker when it comes to making a strong impression on your readers. Your dissertation abstract can either motivate your readers to continue reading or discourage them from  moving on to the next chapters .

The abstract of a dissertation needs to be conspicuous, meaningful, interesting and of course, informative. It should contain brief but relevant information from all chapters of your dissertation to provide a brief overview of the research that has been conducted. This would mean its:

• What (topic statement of your research)
• Who (the sample)
• Why (the significance/objectives/aims/questions/hypothesis of your research)
• Where (the background/setting of your research)
• And how (the research design/tools/methods/methodologies etc. of your research)

 Here, we have put together some guidelines for students to understand how to write an abstract for a dissertation to make a great first impression on readers.

Key Components of a Dissertation Abstract

The  key elements of a dissertation abstract are as follows:

• Background statement/problem statement/thesis statement
• Information regarding research sample
• Methods of research employed
• A brief description of the results obtained and their interpretation (only the most important one(s))
• A summary of conclusion, limitations and future recommendations/implications (only the most salient ones)

1. Background/Problem Statement/Aims and Objectives

The first couple of sentences of your dissertation abstract should provide a summary of the purpose of your research. This can be expressed as follows:

• Background statement – Provide a brief perspective on the theoretical and practical significance of your work.
• The problem statement clearly communicates to the readers why there was a need to research the chosen topic.
• Present an overview of the research’s aim and objectives to establish what your research intended to achieve.
• Thesis statement – what is the main idea of your dissertation paper? What are your claims in reference to the established research questions?

Avoid writing this part of the abstract in future tense because it refers to concluded actions.

• This study will investigate the relationship between coffee consumption and productivity.
• This study investigates the relationship between coffee consumption and productivity.

Also read: How to Get Dissertation Deadline Extension – Some Practical Methods.

This one-to-two lined section will give information about who the sample in your study was; where they are located/residing, etc. The reasons for selecting that group of participants, for instance, is not relevant for mention in an abstract.

3. Research Methods

Briefly specify your  dissertation research methodology immediately after stating the purpose and sample of your dissertation paper. Here, you will be expected to summarise how you straightforwardly conducted your research.

Like the first section, a description of research  methods should also be written in the simple past tense. There is absolutely  no need to highlight the limitations and/or validity  of your research methods here.

The goal is to take the readers through the overall approach and process quickly.

4. Research Findings

Provide a brief overview of the major  findings of your dissertation study . If you think you undiscovered multiple major findings, only mention the ones that directly answer a research question or two that was/were part of your study to begin with. For instance, if you studied the relation between two variables and your findings indicate it’s a positive correlation, you simply state that finding, not the other, minor ones related to this specific one.

This section is the crux of your abstract, so make sure you demonstrate how your research addressed the research objectives.

Furthermore, due to the word limit (150-200) of the abstract and the complexity of your research, you might not be able to include all results here. If that is the case, have only the most significant results.

This portion should be written in the past simple or present tense. Here is an example:

• Analysis of the responses has shown that there is a strong correlation between consumption and productivity.
• Analysis of the responses shows there is a strong correlation between coffee consumption and productivity.
• Analysis of the responses showed there was a strong correlation between coffee consumption and productivity.

5. Conclusion and Recommendation/Implication

Lastly, the  abstract of a dissertation  should  conclude your dissertation research . The conclusion should clearly report how your study addressed the research problem.

Use this part of the abstract to convince people how your research proved the argument or theory your research was built on and started off with.

Provide recommendations for practical implementation to clearly understand your audience how your work will solve the problem at hand.

Finally, do not forget to mention important research limitations briefly. For example, selecting a smaller sample size due to some constraints would be a limitation worth mentioning. This will add more weight and credibility to your research.

Make use of the present simple test when writing the conclusion.

Some institutions, however, dictate that you write one or two lines about the long- or short-term implications your research might have. This component would be the last one in an abstract, preceded by the conclusive statement.

Abstract keywords/phrases 

You might be asked to include important key terms and phrases at the end of the abstract, especially if your paper has been selected for publication in an academic journal.

These keywords help potential readers find your paper in search engines during their  desk-based research .

However, it should be noted that some academic journals have their own specific formatting requirements for keywords. It’s recommended that you read the requirements about keywords in their publication manuals to avoid any misunderstanding.

More on Abstract keywords

According to Hartley and Kostoff (2003), following are some different methods for supplying keywords for an abstract:

Researchers “supply them with no restrictions on the numbers allowed; supply up to a fixed number (e.g. six); supply key words as appropriate from a specified list; editors supplement/amend authors’ key words; editors supply key words; editors supply key words from a specified list; referees supply key words from a specified list; keywords are allocated according to the ‘house-rules’ applied to all journals; distributed by a specific publisher; keywords are determined by computer program at proof stage”.

Format of a Dissertation Abstract

The typical size of an abstract for a masters’ dissertation is 300-400 words whereas abstracts for undergraduate dissertation papers are 150-200 words in size.

Since their findings are generally more in number, abstracts for PhD-level dissertation papers are assigned 300-350 words. The dissertation abstract structure should be such that there are one or two sentences assigned to each chapter of the dissertation.

For example, if your dissertation paper has 5 chapters, there should be a minimum of 8-10 sentences in the abstract to provide a reflective summary of each chapter’s information.

As is the case  with the dissertation introduction chapter , you will be expected to specify the research questions clearly.

You might need to rearrange them and/or reduce the word count without missing out on any important element, considering there is room for only two to three research questions generally placed at the beginning of the abstract.

  Poor dissertation abstracts don’t present the findings of the research. It is important to recognize that the readers of your dissertation paper will be more interested in what findings you came up with as a result of your research and not merely what you did. Use at least 2 to 3 sentences for summarising the results and their interpretation.

Look for the formatting requirements in your dissertation handbook or writing guidelines provided by your school. Make sure to stay within the permissible word limit.  An abstract too long or too short will not serve the purpose.

Tips on How to Write the Abstract for Dissertation

Condensing your entire dissertation into just a few sentences can be a daunting task, especially if it’s your first time writing a dissertation abstract.

It is important to get your dissertation abstract right because this part of the dissertation paper is the first real piece of written description that your audience will read. You can even recall some of your own experiences where, due to shortage of time or many deadlines looming above your head, you had to skim and scam the abstract of a research article or journal paper you stumbled across. It probably gave you a good enough idea whether it was worth it to bookmark that paper to read fully later now, didn’t it?

That’s exactly the kind of effect your own abstract should have on its readers, too. It’s meant to give a holistic view of the entire research.

Here are some tips for you to make sure you write this part to the highest possible academic quality:

Also Read: Different Research Methods for Dissertation?

Tip #1: Avoid Citing Publications

Student researchers often get carried away with the research of professional researchers when writing an abstract. Avoid focusing on others’ work and demonstrate how your own research will substantially contribute to your area of study.

Depending on the allowable word limit for the abstract, you might be able to squeeze in a sentence or two about the scholarly background of the research problem you wish to address. Still, there is no need to cite any publications.

Tip #2: Be Concise and to-the-point

Your dissertation abstract should be attention-grabbing, even though you will have only a few hundred words to work with. So. it is crucial to communicate your research work in the most concise manner.  Never stuff your dissertation abstract with needless words and avoid vague verbiage that might put your readers off-track.

 Need help with writing a killer dissertation abstract? Our writers can write an abstract for a dissertation following your school’s guidelines. Or get help from our expert academics  with any part of your dissertation.

Tip # 3: Read Sample Abstracts

Learn the art of writing great dissertation abstract by reading abstract dissertation samples. It would make sense to look at how other people in your academic subject have written their abstracts.

If you have already conducted your  dissertation literature review , you might have already read many research paper abstracts – which you could use to get useful insights into how to format your dissertation abstract. Here is an abstract dissertation example to help you get started.

Tip #4: Coverage and Presentation

Remember, an abstract is one single paragraph. There are no breaks in it. It continues as a single body. Furthermore, it is written in a separate page. No other chapter or sub-headings etc. come before or after the abstract on the same page. There are also no headings – such as the topic of your research – above the title ‘Abstract’ on the abstract page. Simply give the heading of ‘Abstract’ and start it off from there. And last but not the least, another important thing to keep in mind is that abstract (pretty much like the rest of your thesis) will be double-spaced.

Tip #5: Language

Other researchers will look for key terms specific to your research field to figure out the purpose and nature of your dissertation paper. Make sure to include relevant terminology necessary for understanding your abstract and thereby determining what the research was about.

Tip #6: Shortening a Lengthy Abstract

It’s natural to sometimes get carried away while writing…even in academic writing. As Trochim and other writers state in their book, Research Methods: The Essential Knowledge Base , “In order to shorten your abstract, you should eliminate nonessential information wherever possible—this includes transitions phrases (e.g., ‘the results demonstrate . . .’).”

Can I use an excerpt from the paper as an abstract?

No, you should not. It is important for an abstract to be an entirely autonomous and independent text and never be an extract taken from within the paper’s original content. Write it in your own words, 

What is the purpose of an abstract?

The abstract of your dissertation provides a brief overview of the research conducted and the results obtained.

What should a dissertation abstract contain?

The abstract of your dissertation must give background information, mention the problem statement , research aims , and objectives, sample information, methods of research , the findings , conclusion and recommendations/implications.

Can I cite a reference in the abstract?

No, you must never cite any reference in the abstract.

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• How to Write an Abstract for a Dissertation or Thesis
• Doing a PhD

What is a Thesis or Dissertation Abstract?

The Cambridge English Dictionary defines an abstract in academic writing as being “ a few sentences that give the main ideas in an article or a scientific paper ” and the Collins English Dictionary says “ an abstract of an article, document, or speech is a short piece of writing that gives the main points of it ”.

Whether you’re writing up your Master’s dissertation or PhD thesis, the abstract will be a key element of this document that you’ll want to make sure you give proper attention to.

What is the Purpose of an Abstract?

The aim of a thesis abstract is to give the reader a broad overview of what your research project was about and what you found that was novel, before he or she decides to read the entire thesis. The reality here though is that very few people will read the entire thesis, and not because they’re necessarily disinterested but because practically it’s too large a document for most people to have the time to read. The exception to this is your PhD examiner, however know that even they may not read the entire length of the document.

Some people may still skip to and read specific sections throughout your thesis such as the methodology, but the fact is that the abstract will be all that most read and will therefore be the section they base their opinions about your research on. In short, make sure you write a good, well-structured abstract.

How Long Should an Abstract Be?

If you’re a PhD student, having written your 100,000-word thesis, the abstract will be the 300 word summary included at the start of the thesis that succinctly explains the motivation for your study (i.e. why this research was needed), the main work you did (i.e. the focus of each chapter), what you found (the results) and concluding with how your research study contributed to new knowledge within your field.

Woodrow Wilson, the 28th President of the United States of America, once famously said:

The point here is that it’s easier to talk open-endedly about a subject that you know a lot about than it is to condense the key points into a 10-minute speech; the same applies for an abstract. Three hundred words is not a lot of words which makes it even more difficult to condense three (or more) years of research into a coherent, interesting story.

What Makes a Good PhD Thesis Abstract?

Whilst the abstract is one of the first sections in your PhD thesis, practically it’s probably the last aspect that you’ll ending up writing before sending the document to print. The reason being that you can’t write a summary about what you did, what you found and what it means until you’ve done the work.

A good abstract is one that can clearly explain to the reader in 300 words:

• What your research field actually is,
• What the gap in knowledge was in your field,
• The overarching aim and objectives of your PhD in response to these gaps,
• What methods you employed to achieve these,
• You key results and findings,
• How your work has added to further knowledge in your field of study.

Another way to think of this structure is:

• Introduction,
• Aims and objectives,
• Discussion,
• Conclusion.

Following this ‘formulaic’ approach to writing the abstract should hopefully make it a little easier to write but you can already see here that there’s a lot of information to convey in a very limited number of words.

How Do You Write a Good PhD Thesis Abstract?

The biggest challenge you’ll have is getting all the 6 points mentioned above across in your abstract within the limit of 300 words . Your particular university may give some leeway in going a few words over this but it’s good practice to keep within this; the art of succinctly getting your information across is an important skill for a researcher to have and one that you’ll be called on to use regularly as you write papers for peer review.

Keep It Concise

Every word in the abstract is important so make sure you focus on only the key elements of your research and the main outcomes and significance of your project that you want the reader to know about. You may have come across incidental findings during your research which could be interesting to discuss but this should not happen in the abstract as you simply don’t have enough words. Furthermore, make sure everything you talk about in your thesis is actually described in the main thesis.

Make a Unique Point Each Sentence

Keep the sentences short and to the point. Each sentence should give the reader new, useful information about your research so there’s no need to write out your project title again. Give yourself one or two sentences to introduce your subject area and set the context for your project. Then another sentence or two to explain the gap in the knowledge; there’s no need or expectation for you to include references in the abstract.

Explain Your Research

Some people prefer to write their overarching aim whilst others set out their research questions as they correspond to the structure of their thesis chapters; the approach you use is up to you, as long as the reader can understand what your dissertation or thesis had set out to achieve. Knowing this will help the reader better understand if your results help to answer the research questions or if further work is needed.

Keep It Factual

Keep the content of the abstract factual; that is to say that you should avoid bringing too much or any opinion into it, which inevitably can make the writing seem vague in the points you’re trying to get across and even lacking in structure.

Write, Edit and Then Rewrite

Spend suitable time editing your text, and if necessary, completely re-writing it. Show the abstract to others and ask them to explain what they understand about your research – are they able to explain back to you each of the 6 structure points, including why your project was needed, the research questions and results, and the impact it had on your research field? It’s important that you’re able to convey what new knowledge you contributed to your field but be mindful when writing your abstract that you don’t inadvertently overstate the conclusions, impact and significance of your work.

Thesis and Dissertation Abstract Examples

Perhaps the best way to understand how to write a thesis abstract is to look at examples of what makes a good and bad abstract.

Example of A Bad Abstract

Let’s start with an example of a bad thesis abstract:

In this project on “The Analysis of the Structural Integrity of 3D Printed Polymers for use in Aircraft”, my research looked at how 3D printing of materials can help the aviation industry in the manufacture of planes. Plane parts can be made at a lower cost using 3D printing and made lighter than traditional components. This project investigated the structural integrity of EBM manufactured components, which could revolutionise the aviation industry.

What Makes This a Bad Abstract

Hopefully you’ll have spotted some of the reasons this would be considered a poor abstract, not least because the author used up valuable words by repeating the lengthy title of the project in the abstract.

Working through our checklist of the 6 key points you want to convey to the reader:

• There has been an attempt to introduce the research area , albeit half-way through the abstract but it’s not clear if this is a materials science project about 3D printing or is it about aircraft design.
• There’s no explanation about where the gap in the knowledge is that this project attempted to address.
• We can see that this project was focussed on the topic of structural integrity of materials in aircraft but the actual research aims or objectives haven’t been defined.
• There’s no mention at all of what the author actually did to investigate structural integrity. For example was this an experimental study involving real aircraft, or something in the lab, computer simulations etc.
• The author also doesn’t tell us a single result of his research, let alone the key findings !
• There’s a bold claim in the last sentence of the abstract that this project could revolutionise the aviation industry, and this may well be the case, but based on the abstract alone there is no evidence to support this as it’s not even clear what the author did .

This is an extreme example but is a good way to illustrate just how unhelpful a poorly written abstract can be. At only 71 words long, it definitely hasn’t maximised the amount of information that could be presented and the what they have presented has lacked clarity and structure.

A final point to note is the use of the EBM acronym, which stands for Electron Beam Melting in the context of 3D printing; this is a niche acronym for the author to assume that the reader would know the meaning of. It’s best to avoid acronyms in your abstract all together even if it’s something that you might expect most people to know about, unless you specifically define the meaning first.

Example of A Good Abstract

Having seen an example of a bad thesis abstract, now lets look at an example of a good PhD thesis abstract written about the same (fictional) project:

Additive manufacturing (AM) of titanium alloys has the potential to enable cheaper and lighter components to be produced with customised designs for use in aircraft engines. Whilst the proof-of-concept of these have been promising, the structural integrity of AM engine parts in response to full thrust and temperature variations is not clear.

The primary aim of this project was to determine the fracture modes and mechanisms of AM components designed for use in Boeing 747 engines. To achieve this an explicit finite element (FE) model was developed to simulate the environment and parameters that the engine is exposed to during flight. The FE model was validated using experimental data replicating the environmental parameters in a laboratory setting using ten AM engine components provided by the industry sponsor. The validated FE model was then used to investigate the extent of crack initiation and propagation as the environment parameters were adjusted.

This project was the first to investigate fracture patterns in AM titanium components used in aircraft engines; the key finding was that the presence of cavities within the structures due to errors in the printing process, significantly increased the risk of fracture. Secondly, the simulations showed that cracks formed within AM parts were more likely to worsen and lead to component failure at subzero temperatures when compared to conventionally manufactured parts. This has demonstrated an important safety concern which needs to be addressed before AM parts can be used in commercial aircraft.

What Makes This a Good Abstract

Having read this ‘good abstract’ you should have a much better understand about what the subject area is about, where the gap in the knowledge was, the aim of the project, the methods that were used, key results and finally the significance of these results. To break these points down further, from this good abstract we now know that:

• The research area is around additive manufacturing (i.e. 3D printing) of materials for use in aircraft.
• The gap in knowledge was how these materials will behave structural when used in aircraft engines.
• The aim was specifically to investigate how the components can fracture.
• The methods used to investigate this were a combination of computational and lab based experimental modelling.
• The key findings were the increased risk of fracture of these components due to the way they are manufactured.
• The significance of these findings were that it showed a potential risk of component failure that could comprise the safety of passengers and crew on the aircraft.

The abstract text has a much clearer flow through these different points in how it’s written and has made much better use of the available word count. Acronyms have even been used twice in this good abstract but they were clearly defined the first time they were introduced in the text so that there was no confusion about their meaning.

The abstract you write for your dissertation or thesis should succinctly explain to the reader why the work of your research was needed, what you did, what you found and what it means. Most people that come across your thesis, including any future employers, are likely to read only your abstract. Even just for this reason alone, it’s so important that you write the best abstract you can; this will not only convey your research effectively but also put you in the best light possible as a researcher.

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