Ultrasonic testing of structural defects in honeycomb composite specimens

Honeycomb composite structures plays a pivotal role in many industries due to their exceptional strength to weight properties. The detection of defects within these structures are critical to maintain structure integrity of the component. This study explores the capabilities of Non-Destructive Te...

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Main Author: Aloyscieus, S
Other Authors: Chai Gin Boay
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2024
Subjects:
Online Access:https://hdl.handle.net/10356/176155
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1761552024-05-20T06:06:56Z Ultrasonic testing of structural defects in honeycomb composite specimens Aloyscieus, S Chai Gin Boay School of Mechanical and Aerospace Engineering Brian Stephen Wong MGBCHAI@ntu.edu.sg Engineering Ultrasonic testing Honeycomb composite specimen Honeycomb composite structures plays a pivotal role in many industries due to their exceptional strength to weight properties. The detection of defects within these structures are critical to maintain structure integrity of the component. This study explores the capabilities of Non-Destructive Testing techniques like Ultrasonic Testing, specifically pulse echo and through transmission technique, in detecting and characterizing defects within honeycomb specimens. The primary objective is to assess the effectiveness and accuracy of the ultrasonic testing methods, with a focus on deliberate defects of varying positions, shapes, and sizes. Two fabricated specimens are utilized, with different face sheets – aluminium and carbon fiber-reinforced polymer – to aluminium honeycomb core to enable a comprehensive evaluation of the UT techniques. Results reveals that through transmission technique is superior in terms of defect detection accuracy compared to pulse echo. Specimen B, with an aluminium-to- aluminium interface outperforms specimen A in both techniques, emphasising the influence of the transmission medium on accuracy. Furthermore, contrary to prior research, pulse echo technique successfully detects cuts in the honeycomb core as well as defects which are on the opposite side of the specimen. These findings provide valuable insights for improving inspection techniques and practices in industries relying on honeycomb structures. Bachelor's degree 2024-05-14T02:00:46Z 2024-05-14T02:00:46Z 2024 Final Year Project (FYP) Aloyscieus, S. (2024). Ultrasonic testing of structural defects in honeycomb composite specimens. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/176155 https://hdl.handle.net/10356/176155 en B308 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
Ultrasonic testing
Honeycomb composite specimen
spellingShingle Engineering
Ultrasonic testing
Honeycomb composite specimen
Aloyscieus, S
Ultrasonic testing of structural defects in honeycomb composite specimens
description Honeycomb composite structures plays a pivotal role in many industries due to their exceptional strength to weight properties. The detection of defects within these structures are critical to maintain structure integrity of the component. This study explores the capabilities of Non-Destructive Testing techniques like Ultrasonic Testing, specifically pulse echo and through transmission technique, in detecting and characterizing defects within honeycomb specimens. The primary objective is to assess the effectiveness and accuracy of the ultrasonic testing methods, with a focus on deliberate defects of varying positions, shapes, and sizes. Two fabricated specimens are utilized, with different face sheets – aluminium and carbon fiber-reinforced polymer – to aluminium honeycomb core to enable a comprehensive evaluation of the UT techniques. Results reveals that through transmission technique is superior in terms of defect detection accuracy compared to pulse echo. Specimen B, with an aluminium-to- aluminium interface outperforms specimen A in both techniques, emphasising the influence of the transmission medium on accuracy. Furthermore, contrary to prior research, pulse echo technique successfully detects cuts in the honeycomb core as well as defects which are on the opposite side of the specimen. These findings provide valuable insights for improving inspection techniques and practices in industries relying on honeycomb structures.
author2 Chai Gin Boay
author_facet Chai Gin Boay
Aloyscieus, S
format Final Year Project
author Aloyscieus, S
author_sort Aloyscieus, S
title Ultrasonic testing of structural defects in honeycomb composite specimens
title_short Ultrasonic testing of structural defects in honeycomb composite specimens
title_full Ultrasonic testing of structural defects in honeycomb composite specimens
title_fullStr Ultrasonic testing of structural defects in honeycomb composite specimens
title_full_unstemmed Ultrasonic testing of structural defects in honeycomb composite specimens
title_sort ultrasonic testing of structural defects in honeycomb composite specimens
publisher Nanyang Technological University
publishDate 2024
url https://hdl.handle.net/10356/176155
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