A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis

The use of advanced composite structures on aircraft is increasing. New aircraft, such as the Airbus A350 and the Boeing B787, have more than 50% of their structure originating from composite materials especially carbon fiber reinforced plastic (CFRP). Delamination, disbonding, voids and barely visi...

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Main Author: Mohd Aris, Khairul Dahri
Format: Thesis
Language:English
Published: 2015
Online Access:http://psasir.upm.edu.my/id/eprint/65496/1/FK%202015%20149IR.pdf
http://psasir.upm.edu.my/id/eprint/65496/
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Institution: Universiti Putra Malaysia
Language: English
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spelling my.upm.eprints.654962018-09-20T07:22:42Z http://psasir.upm.edu.my/id/eprint/65496/ A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis Mohd Aris, Khairul Dahri The use of advanced composite structures on aircraft is increasing. New aircraft, such as the Airbus A350 and the Boeing B787, have more than 50% of their structure originating from composite materials especially carbon fiber reinforced plastic (CFRP). Delamination, disbonding, voids and barely visible internal damage (BVID) are some of the damages uniquely found in the composite structure. Once the repair is carried out, the structural health monitoring (SHM) has the ability to detect structural anomalies where human dependency can be minimized. However, most SHM works are concentrating on pristine structure on repaired structure. Therefore the behaviour of SHM at undamaged, damaged and repaired conditions on carbon fiber reinforced plastic (CFRP) are being investigated in this research.. The motivation of the research is to optimize the structural health monitoring (SHM) in comparing the structural response undamaged, damaged and repaired of CFRP structures by using Principal Component Analysis (PCA) through Amplitude Based Assessment (ABA) and Conditional Structural Index (CSI). The objectives of the research are to undertake a feasibility study on Lamb wave propagation over undamaged, damaged and repaired composite panels via smart PZT sensor by using PCA to evaluate the structural conditions of CFRP panels. PZT sensors are used to interrogate and retrieve the surface wave across the investigated structures via online and offline on the undamaged damaged and repaired structures of similar origin. Result shows that although the structural integrity has returned back to its pristine condition, the repaired structure response is diverging from the undamaged conditions. The novelty in this research is the comparative results between undamaged, damaged and repaired response of an aircraft structures originated from CFRP panels which will assist in interpreting the structural health status at maintenance level. 2015-03 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/65496/1/FK%202015%20149IR.pdf Mohd Aris, Khairul Dahri (2015) A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis. PhD thesis, Universiti Putra Malaysia.
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The use of advanced composite structures on aircraft is increasing. New aircraft, such as the Airbus A350 and the Boeing B787, have more than 50% of their structure originating from composite materials especially carbon fiber reinforced plastic (CFRP). Delamination, disbonding, voids and barely visible internal damage (BVID) are some of the damages uniquely found in the composite structure. Once the repair is carried out, the structural health monitoring (SHM) has the ability to detect structural anomalies where human dependency can be minimized. However, most SHM works are concentrating on pristine structure on repaired structure. Therefore the behaviour of SHM at undamaged, damaged and repaired conditions on carbon fiber reinforced plastic (CFRP) are being investigated in this research.. The motivation of the research is to optimize the structural health monitoring (SHM) in comparing the structural response undamaged, damaged and repaired of CFRP structures by using Principal Component Analysis (PCA) through Amplitude Based Assessment (ABA) and Conditional Structural Index (CSI). The objectives of the research are to undertake a feasibility study on Lamb wave propagation over undamaged, damaged and repaired composite panels via smart PZT sensor by using PCA to evaluate the structural conditions of CFRP panels. PZT sensors are used to interrogate and retrieve the surface wave across the investigated structures via online and offline on the undamaged damaged and repaired structures of similar origin. Result shows that although the structural integrity has returned back to its pristine condition, the repaired structure response is diverging from the undamaged conditions. The novelty in this research is the comparative results between undamaged, damaged and repaired response of an aircraft structures originated from CFRP panels which will assist in interpreting the structural health status at maintenance level.
format Thesis
author Mohd Aris, Khairul Dahri
spellingShingle Mohd Aris, Khairul Dahri
A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis
author_facet Mohd Aris, Khairul Dahri
author_sort Mohd Aris, Khairul Dahri
title A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis
title_short A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis
title_full A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis
title_fullStr A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis
title_full_unstemmed A Structural Health Monitoring (SHM) of composite patch repair for aircraft part and structures using principal component analysis
title_sort structural health monitoring (shm) of composite patch repair for aircraft part and structures using principal component analysis
publishDate 2015
url http://psasir.upm.edu.my/id/eprint/65496/1/FK%202015%20149IR.pdf
http://psasir.upm.edu.my/id/eprint/65496/
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