Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061

An exhaust structure is experienced dynamic loads caused by engine operational and road surface condition that affected its durability and performance. Hence, the purpose of this study is to perform finite element (FE) modelling of exhaust structure and the used of updating approach to improve its d...

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Main Authors:	Z. S., Zahari, Dayangku Noorfazidah, Awang Sh'ri, M. A.H., Abu Hassan, W. S., Wan Harun
Format:	Conference or Workshop Item
Language:	English English
Published:	IOP Publishing Ltd 2019
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/24350/ http://umpir.ump.edu.my/id/eprint/24350/ http://umpir.ump.edu.my/id/eprint/24350/1/70.%20Effect%20of%20ECAP%20die%20angle%20to%20the%20microstructure.pdf http://umpir.ump.edu.my/id/eprint/24350/2/70.1%20Effect%20of%20ECAP%20die%20angle%20to%20the%20microstructure.pdf

id	ump-24350
recordtype	eprints
spelling	ump-243502019-04-05T03:17:50Z http://umpir.ump.edu.my/id/eprint/24350/ Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061 Z. S., Zahari Dayangku Noorfazidah, Awang Sh'ri M. A.H., Abu Hassan W. S., Wan Harun TJ Mechanical engineering and machinery An exhaust structure is experienced dynamic loads caused by engine operational and road surface condition that affected its durability and performance. Hence, the purpose of this study is to perform finite element (FE) modelling of exhaust structure and the used of updating approach to improve its dynamic behaviour. Due to its design, exhaust structure is built-up from several parts connected with welded joints. These welded joints significantly contribute to the dynamic behaviour of the structure. Four types of element connector that are RBE2, CBAR, CBEAM and CELAS have been used to replicate FE model of welded joint on the structure. Modal parameters (natural frequency and mode shape) of the FE model have been obtained from normal mode analysis using finite element analysis (FEA) software, MSC. Nastran/Patran. The precision of numerical predicted result from FEA is compared with its measured counterpart. The measured test data obtained through experimental modal analysis (EMA) using impact hammer and roving accelerometers under free-free boundary conditions. Under correlation process, CBAR element connector was chosen to model the welded joint due to its accurate prediction of natural frequency and contains updating parameters. FE model updating process was performed to improve the correlation between EMA and FEA. Ahead of updating process, sensitivity analysis was done to select the most sensitive updating parameter. As a result, total percentage error of natural frequency for updated CBAR model is reduced significantly from 8.74 % to 3.45 %. Consequently, CBAR element connector was chosen as the most reliable joint element in FE model to represent welded joint on exhaust structure. IOP Publishing Ltd 2019-01 Conference or Workshop Item PeerReviewed pdf en cc_by http://umpir.ump.edu.my/id/eprint/24350/1/70.%20Effect%20of%20ECAP%20die%20angle%20to%20the%20microstructure.pdf pdf en http://umpir.ump.edu.my/id/eprint/24350/2/70.1%20Effect%20of%20ECAP%20die%20angle%20to%20the%20microstructure.pdf Z. S., Zahari and Dayangku Noorfazidah, Awang Sh'ri and M. A.H., Abu Hassan and W. S., Wan Harun (2019) Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061. In: 1st International Postgraduate Conference on Mechanical Engineering, IPCME 2018, 31 October 2018 , Universiti Malaysia Pahang, Pekan, Pahang. pp. 1-8., 469 (1). ISSN 17578981 https://doi.org/10.1088/1757-899X/469/1/012054
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Z. S., Zahari Dayangku Noorfazidah, Awang Sh'ri M. A.H., Abu Hassan W. S., Wan Harun Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061
description	An exhaust structure is experienced dynamic loads caused by engine operational and road surface condition that affected its durability and performance. Hence, the purpose of this study is to perform finite element (FE) modelling of exhaust structure and the used of updating approach to improve its dynamic behaviour. Due to its design, exhaust structure is built-up from several parts connected with welded joints. These welded joints significantly contribute to the dynamic behaviour of the structure. Four types of element connector that are RBE2, CBAR, CBEAM and CELAS have been used to replicate FE model of welded joint on the structure. Modal parameters (natural frequency and mode shape) of the FE model have been obtained from normal mode analysis using finite element analysis (FEA) software, MSC. Nastran/Patran. The precision of numerical predicted result from FEA is compared with its measured counterpart. The measured test data obtained through experimental modal analysis (EMA) using impact hammer and roving accelerometers under free-free boundary conditions. Under correlation process, CBAR element connector was chosen to model the welded joint due to its accurate prediction of natural frequency and contains updating parameters. FE model updating process was performed to improve the correlation between EMA and FEA. Ahead of updating process, sensitivity analysis was done to select the most sensitive updating parameter. As a result, total percentage error of natural frequency for updated CBAR model is reduced significantly from 8.74 % to 3.45 %. Consequently, CBAR element connector was chosen as the most reliable joint element in FE model to represent welded joint on exhaust structure.
format	Conference or Workshop Item
author	Z. S., Zahari Dayangku Noorfazidah, Awang Sh'ri M. A.H., Abu Hassan W. S., Wan Harun
author_facet	Z. S., Zahari Dayangku Noorfazidah, Awang Sh'ri M. A.H., Abu Hassan W. S., Wan Harun
author_sort	Z. S., Zahari
title	Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061
title_short	Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061
title_full	Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061
title_fullStr	Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061
title_full_unstemmed	Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061
title_sort	effect of ecap die angle to the microstructure and mechanical properties of bulk nanostructured al-6061
publisher	IOP Publishing Ltd
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/24350/ http://umpir.ump.edu.my/id/eprint/24350/ http://umpir.ump.edu.my/id/eprint/24350/1/70.%20Effect%20of%20ECAP%20die%20angle%20to%20the%20microstructure.pdf http://umpir.ump.edu.my/id/eprint/24350/2/70.1%20Effect%20of%20ECAP%20die%20angle%20to%20the%20microstructure.pdf
first_indexed	2023-09-18T22:36:47Z
last_indexed	2023-09-18T22:36:47Z
_version_	1777416649071132672

Effect of ECAP die angle to the microstructure and mechanical properties of bulk nanostructured Al-6061

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