Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi

Composite laminates are widely used in engineering applications due to its high mechanical properties which is advantageous for critical engineering structures. Despite possessing major advantages, lack of test data to support the usage of the material promptly halt the advancement of composite lami...

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Main Author:	Raheimi, Amirulaminnur
Format:	Thesis
Language:	English
Published:	2020
Subjects:	Power resources Renewable energy sources
Online Access:	https://ir.uitm.edu.my/id/eprint/32541/1/32541.pdf
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id	my-uitm-ir.32541
record_format	uketd_dc
spelling	my-uitm-ir.325412020-09-03T09:13:38Z Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi 2020-03 Raheimi, Amirulaminnur Power resources Mechanics applied to machinery. Dynamics Renewable energy sources Composite laminates are widely used in engineering applications due to its high mechanical properties which is advantageous for critical engineering structures. Despite possessing major advantages, lack of test data to support the usage of the material promptly halt the advancement of composite laminates applications in industries. This research is carried out to analyse the geometrical effects on guided wave propagation in fiberglass composite laminate and scattering by delamination in fiberglass composite laminate. By utilizing Matlab and Abaqus/Explicit software, simulation of three-dimensional (3D) Finite Element (FE) fiberglass model is conducted and the signal obtained afterwards is processed and analysed. Four monitoring points strategy is implemented to assess guided wave signals. A few models are tested with different influencing factors which are thickness, excitation frequency, angle of monitoring points, and presence of delamination’s. The results are then presented to properly differentiate the signal behaviour and wave field relative to parameter adjustments. Guided wave profile retains its shape at varying thickness, better defect detection in [0/90]° layup arrangement, ideal excitation frequency of 130 kHz and negligible factor of monitoring directions in fiberglass plate. Distinct scattering behaviour of guided wave is ascertained from the back scattering, forward scattering, and energy concentration within delamination, which contributed to proper and ease of delamination’s identification in fiberglass composite laminates. These findings will contributed to overall integrity and reliability of non-destructive testing (NDT) inspection in composite structures. 2020-03 Thesis https://ir.uitm.edu.my/id/eprint/32541/ https://ir.uitm.edu.my/id/eprint/32541/1/32541.pdf text en public masters Universiti Teknologi MARA Faculty of Mechanical Engineering Murat, Bibi Intan Suraya (Dr.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Murat, Bibi Intan Suraya (Dr.)
topic	Power resources Power resources Renewable energy sources
spellingShingle	Power resources Power resources Renewable energy sources Raheimi, Amirulaminnur Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi
description	Composite laminates are widely used in engineering applications due to its high mechanical properties which is advantageous for critical engineering structures. Despite possessing major advantages, lack of test data to support the usage of the material promptly halt the advancement of composite laminates applications in industries. This research is carried out to analyse the geometrical effects on guided wave propagation in fiberglass composite laminate and scattering by delamination in fiberglass composite laminate. By utilizing Matlab and Abaqus/Explicit software, simulation of three-dimensional (3D) Finite Element (FE) fiberglass model is conducted and the signal obtained afterwards is processed and analysed. Four monitoring points strategy is implemented to assess guided wave signals. A few models are tested with different influencing factors which are thickness, excitation frequency, angle of monitoring points, and presence of delamination’s. The results are then presented to properly differentiate the signal behaviour and wave field relative to parameter adjustments. Guided wave profile retains its shape at varying thickness, better defect detection in [0/90]° layup arrangement, ideal excitation frequency of 130 kHz and negligible factor of monitoring directions in fiberglass plate. Distinct scattering behaviour of guided wave is ascertained from the back scattering, forward scattering, and energy concentration within delamination, which contributed to proper and ease of delamination’s identification in fiberglass composite laminates. These findings will contributed to overall integrity and reliability of non-destructive testing (NDT) inspection in composite structures.
format	Thesis
qualification_level	Master's degree
author	Raheimi, Amirulaminnur
author_facet	Raheimi, Amirulaminnur
author_sort	Raheimi, Amirulaminnur
title	Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi
title_short	Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi
title_full	Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi
title_fullStr	Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi
title_full_unstemmed	Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi
title_sort	finite element analysis of guided ultrasonic waves in fiberglass composite laminates / amirulaminnur raheimi
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Mechanical Engineering
publishDate	2020
url	https://ir.uitm.edu.my/id/eprint/32541/1/32541.pdf
_version_	1783734172537323520

Finite element analysis of guided ultrasonic waves in fiberglass composite laminates / Amirulaminnur Raheimi

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