Impedance based detection of delamination in composite structures

Nowadays commercial and military aircrafts are increasingly using composite materials to take advantage of their excellent specific strength and stiffness properties but impacts on composites due to bird-strike, hail-storm cause barely visible impact damage (BVID) that underscores the need for robus...

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Main Authors:	Djemana, Mohamed, Hrairi, Meftah
Format:	Conference or Workshop Item
Language:	English English
Published:	IOP Publishing 2017
Subjects:	TJ210.2 Mechanical devices and figures. Automata. Ingenious mechanism. Robots (General)
Online Access:	http://irep.iium.edu.my/56893/ http://irep.iium.edu.my/56893/ http://irep.iium.edu.my/56893/ http://irep.iium.edu.my/56893/7/56893.pdf http://irep.iium.edu.my/56893/8/56893-Impedance%20Based%20Detection%20of%20Delamination%20in%20Composite%20Structures_SCOPUS.pdf

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recordtype	eprints
spelling	iium-568932017-05-19T04:26:32Z http://irep.iium.edu.my/56893/ Impedance based detection of delamination in composite structures Djemana, Mohamed Hrairi, Meftah TJ210.2 Mechanical devices and figures. Automata. Ingenious mechanism. Robots (General) Nowadays commercial and military aircrafts are increasingly using composite materials to take advantage of their excellent specific strength and stiffness properties but impacts on composites due to bird-strike, hail-storm cause barely visible impact damage (BVID) that underscores the need for robust structural health monitoring methods. Hence, damage identification in composite materials is a widely researched area that has to deal with problems coming from the anisotropic nature of composites and the fact that much of the damage occurs beneath the top surface of the laminate. This paper focuses on understanding self-sensing piezoelectric wafer active sensors (PWAS) to conduct electromechanical impedance (EMI) in glass fibre reinforced polymer composite to perform structural health monitoring. With the aid of a 3D ANSYS finite element model, an analysis of different techniques for the detection of position and size of a delamination in a composite structure using piezoelectric patches had been performed. The real part of the impedance is used because it is known to be more reactive to damage or changes in the structure’s integrity and less sensitive to ambient temperature changes compared to the imaginary part. Comparison with experimental results is presented to validate the FE results. The experimental setup utilizes as its main apparatus an impedance analyser HP4194 that reads the in-situ EMI of PWAS bonded to the monitored composite structure. A good match between experimental and numerical results has been observed for low and high frequencies. The analysis in this paper provides necessary basis for delamination detection in composite structures using EMI technique. IOP Publishing 2017-04-03 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/56893/7/56893.pdf application/pdf en http://irep.iium.edu.my/56893/8/56893-Impedance%20Based%20Detection%20of%20Delamination%20in%20Composite%20Structures_SCOPUS.pdf Djemana, Mohamed and Hrairi, Meftah (2017) Impedance based detection of delamination in composite structures. In: 3rd International Conference on Mechanical, Automotive and Aerospace Engineering 2016 (ICMAAE’16), 25th-27th July 2016, Kuala Lumpur, Malaysia. http://iopscience.iop.org/article/10.1088/1757-899X/184/1/012058/pdf 10.1088/1757-899X/184/1/012058
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TJ210.2 Mechanical devices and figures. Automata. Ingenious mechanism. Robots (General)
spellingShingle	TJ210.2 Mechanical devices and figures. Automata. Ingenious mechanism. Robots (General) Djemana, Mohamed Hrairi, Meftah Impedance based detection of delamination in composite structures
description	Nowadays commercial and military aircrafts are increasingly using composite materials to take advantage of their excellent specific strength and stiffness properties but impacts on composites due to bird-strike, hail-storm cause barely visible impact damage (BVID) that underscores the need for robust structural health monitoring methods. Hence, damage identification in composite materials is a widely researched area that has to deal with problems coming from the anisotropic nature of composites and the fact that much of the damage occurs beneath the top surface of the laminate. This paper focuses on understanding self-sensing piezoelectric wafer active sensors (PWAS) to conduct electromechanical impedance (EMI) in glass fibre reinforced polymer composite to perform structural health monitoring. With the aid of a 3D ANSYS finite element model, an analysis of different techniques for the detection of position and size of a delamination in a composite structure using piezoelectric patches had been performed. The real part of the impedance is used because it is known to be more reactive to damage or changes in the structure’s integrity and less sensitive to ambient temperature changes compared to the imaginary part. Comparison with experimental results is presented to validate the FE results. The experimental setup utilizes as its main apparatus an impedance analyser HP4194 that reads the in-situ EMI of PWAS bonded to the monitored composite structure. A good match between experimental and numerical results has been observed for low and high frequencies. The analysis in this paper provides necessary basis for delamination detection in composite structures using EMI technique.
format	Conference or Workshop Item
author	Djemana, Mohamed Hrairi, Meftah
author_facet	Djemana, Mohamed Hrairi, Meftah
author_sort	Djemana, Mohamed
title	Impedance based detection of delamination in composite structures
title_short	Impedance based detection of delamination in composite structures
title_full	Impedance based detection of delamination in composite structures
title_fullStr	Impedance based detection of delamination in composite structures
title_full_unstemmed	Impedance based detection of delamination in composite structures
title_sort	impedance based detection of delamination in composite structures
publisher	IOP Publishing
publishDate	2017
url	http://irep.iium.edu.my/56893/ http://irep.iium.edu.my/56893/ http://irep.iium.edu.my/56893/ http://irep.iium.edu.my/56893/7/56893.pdf http://irep.iium.edu.my/56893/8/56893-Impedance%20Based%20Detection%20of%20Delamination%20in%20Composite%20Structures_SCOPUS.pdf
first_indexed	2023-09-18T21:20:20Z
last_indexed	2023-09-18T21:20:20Z
_version_	1777411838869241856

Impedance based detection of delamination in composite structures

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