Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method

This study investigates the crack growth response on sandwich metal panel (SMP) combination of high strength steel (HSS) as faces and magnesium alloy (AZ31B) as core on the light armoured vehicles LAV. Currently, LAV uses a special solid steel which content heavy material that causes the LAV reduce...

Full description

Saved in:

Bibliographic Details
Main Author:	Isahak, Abdullah Helmi
Format:	Thesis
Language:	English English
Published:	2021
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://ir.upnm.edu.my/id/eprint/247/1/EVALUATION%20OF%20CRACK%20%2825p%29.pdf http://ir.upnm.edu.my/id/eprint/247/2/EVALUATION%20OF%20CRACK%20%28Full%29.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-upnm-ir.247
record_format	uketd_dc
spelling	my-upnm-ir.2472023-06-15T01:19:14Z Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method 2021-10-27 Isahak, Abdullah Helmi TJ Mechanical engineering and machinery This study investigates the crack growth response on sandwich metal panel (SMP) combination of high strength steel (HSS) as faces and magnesium alloy (AZ31B) as core on the light armoured vehicles LAV. Currently, LAV uses a special solid steel which content heavy material that causes the LAV reduce its lifespan performance and limit the movement after shot by ammunition bullets with high impact until the crack starts to form. The main objective of this research is to develop SMP that can provide improvement in terms of life durability compared to existing materials in LAV applications. A crack growth test was done using compact tension, CT by comparing the improvement solid HSS and AZ31B with sandwich metal panel in terms of life durability and energy absorption. Crack growth response investigation focuses on the frequency, f = 10 Hz and stress ratio, R = 0.1 as control variables. Next, the Design of Experiment of the 2k factorial method was implemented by applying frequency, f (5 Hz and 10 Hz) and stress ratio, R (0.1 and 0.5) as statistical analysis. Twelve runs were carried out for the sandwich metal panel to obtain an optimum response for the number of life cycles and crack length in the empirical model equation and the best optimal D efficiency obtained. The increment of life cycle on crack growth analysis between HSS and SMP was about 18%, while the life cycle for AZ31B and SMP was about 34%. From the statistical result, an empirical model for the number of cycles has been chosen as optimum values for maximising the number of life durability on SMP at frequency, f = 10 Hz and stress ratio, R = 0.5. The increment of life cycle using optimum values between HSS and AZ31B with SMP was more than 60%. Thus, the potential of SMP to be replaced as an improvement in life durability for the light armour vehicle, LAV application has been verified. 2021-10 Thesis http://ir.upnm.edu.my/id/eprint/247/ http://ir.upnm.edu.my/id/eprint/247/1/EVALUATION%20OF%20CRACK%20%2825p%29.pdf text en public http://ir.upnm.edu.my/id/eprint/247/2/EVALUATION%20OF%20CRACK%20%28Full%29.pdf text en validuser mphil masters Universiti Pertahanan Nasional Malaysia Centre For Graduate Studies
institution	Universiti Pertahanan Nasional Malaysia
collection	UPNM Institutional Repository
language	English English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Isahak, Abdullah Helmi Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method
description	This study investigates the crack growth response on sandwich metal panel (SMP) combination of high strength steel (HSS) as faces and magnesium alloy (AZ31B) as core on the light armoured vehicles LAV. Currently, LAV uses a special solid steel which content heavy material that causes the LAV reduce its lifespan performance and limit the movement after shot by ammunition bullets with high impact until the crack starts to form. The main objective of this research is to develop SMP that can provide improvement in terms of life durability compared to existing materials in LAV applications. A crack growth test was done using compact tension, CT by comparing the improvement solid HSS and AZ31B with sandwich metal panel in terms of life durability and energy absorption. Crack growth response investigation focuses on the frequency, f = 10 Hz and stress ratio, R = 0.1 as control variables. Next, the Design of Experiment of the 2k factorial method was implemented by applying frequency, f (5 Hz and 10 Hz) and stress ratio, R (0.1 and 0.5) as statistical analysis. Twelve runs were carried out for the sandwich metal panel to obtain an optimum response for the number of life cycles and crack length in the empirical model equation and the best optimal D efficiency obtained. The increment of life cycle on crack growth analysis between HSS and SMP was about 18%, while the life cycle for AZ31B and SMP was about 34%. From the statistical result, an empirical model for the number of cycles has been chosen as optimum values for maximising the number of life durability on SMP at frequency, f = 10 Hz and stress ratio, R = 0.5. The increment of life cycle using optimum values between HSS and AZ31B with SMP was more than 60%. Thus, the potential of SMP to be replaced as an improvement in life durability for the light armour vehicle, LAV application has been verified.
format	Thesis
qualification_name	Master of Philosophy (MPhil)
qualification_level	Master's degree
author	Isahak, Abdullah Helmi
author_facet	Isahak, Abdullah Helmi
author_sort	Isahak, Abdullah Helmi
title	Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method
title_short	Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method
title_full	Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method
title_fullStr	Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method
title_full_unstemmed	Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method
title_sort	evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method
granting_institution	Universiti Pertahanan Nasional Malaysia
granting_department	Centre For Graduate Studies
publishDate	2021
url	http://ir.upnm.edu.my/id/eprint/247/1/EVALUATION%20OF%20CRACK%20%2825p%29.pdf http://ir.upnm.edu.my/id/eprint/247/2/EVALUATION%20OF%20CRACK%20%28Full%29.pdf
_version_	1813223592625700864

Evaluation of crack growth behaviour on sandwich metal panel using 2k factorial method

Similar Items