Fatigue behaviour of additively manufactured low alloy steel

In recent years, Additive Manufacturing (AM) has witnessed significant growth, offering numerous advantages over traditional manufacturing methods. Its widespread adoption in major industries like medical, aerospace, automotive, and marine offshore highlights its versatility. As the marine offshore...

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Main Author: Yong, Dylan Ze Quan
Other Authors: Lai Changquan
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2024
Subjects:
Online Access:https://hdl.handle.net/10356/177787
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1777872024-05-31T07:05:46Z Fatigue behaviour of additively manufactured low alloy steel Yong, Dylan Ze Quan Lai Changquan School of Mechanical and Aerospace Engineering cqlai@ntu.edu.sg Engineering In recent years, Additive Manufacturing (AM) has witnessed significant growth, offering numerous advantages over traditional manufacturing methods. Its widespread adoption in major industries like medical, aerospace, automotive, and marine offshore highlights its versatility. As the marine offshore sector evolves to meet diverse needs, there is an increasing demand for intricate components. Despite the common use of structural steels like Low Carbon Steel in shipbuilding due to their excellent mechanical properties, current AM methods still face challenges in optimizing the process and reducing defects like porosities, lack of fusion, inclusions, and unmelted feedstock. This Final Year Project focuses on exploring the microstructure and fatigue behaviour of Low Alloy Steel produced through the Binder Jetting method in 3D printing. The investigation began with a tensile test to determine essential mechanical properties such as ductility, yield, and tensile strengths. Subsequent fatigue tests were carried out with applied stresses corresponding to the respective yield strengths. The resulting fatigue properties were compiled into a table and represented on an S-N curve for comparative analysis among different specimens. The study also includes fractographic analysis using a Scanning Electron Microscope (SEM) to examine various fractured surfaces, identify defects leading to specimen failure, and discuss their impact on fatigue life. Bachelor's degree 2024-05-31T07:05:46Z 2024-05-31T07:05:46Z 2024 Final Year Project (FYP) Yong, D. Z. Q. (2024). Fatigue behaviour of additively manufactured low alloy steel. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/177787 https://hdl.handle.net/10356/177787 en application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering
spellingShingle Engineering
Yong, Dylan Ze Quan
Fatigue behaviour of additively manufactured low alloy steel
description In recent years, Additive Manufacturing (AM) has witnessed significant growth, offering numerous advantages over traditional manufacturing methods. Its widespread adoption in major industries like medical, aerospace, automotive, and marine offshore highlights its versatility. As the marine offshore sector evolves to meet diverse needs, there is an increasing demand for intricate components. Despite the common use of structural steels like Low Carbon Steel in shipbuilding due to their excellent mechanical properties, current AM methods still face challenges in optimizing the process and reducing defects like porosities, lack of fusion, inclusions, and unmelted feedstock. This Final Year Project focuses on exploring the microstructure and fatigue behaviour of Low Alloy Steel produced through the Binder Jetting method in 3D printing. The investigation began with a tensile test to determine essential mechanical properties such as ductility, yield, and tensile strengths. Subsequent fatigue tests were carried out with applied stresses corresponding to the respective yield strengths. The resulting fatigue properties were compiled into a table and represented on an S-N curve for comparative analysis among different specimens. The study also includes fractographic analysis using a Scanning Electron Microscope (SEM) to examine various fractured surfaces, identify defects leading to specimen failure, and discuss their impact on fatigue life.
author2 Lai Changquan
author_facet Lai Changquan
Yong, Dylan Ze Quan
format Final Year Project
author Yong, Dylan Ze Quan
author_sort Yong, Dylan Ze Quan
title Fatigue behaviour of additively manufactured low alloy steel
title_short Fatigue behaviour of additively manufactured low alloy steel
title_full Fatigue behaviour of additively manufactured low alloy steel
title_fullStr Fatigue behaviour of additively manufactured low alloy steel
title_full_unstemmed Fatigue behaviour of additively manufactured low alloy steel
title_sort fatigue behaviour of additively manufactured low alloy steel
publisher Nanyang Technological University
publishDate 2024
url https://hdl.handle.net/10356/177787
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