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Failure of woven fiber glass epoxy composite under charpy impact loading

Md Idriss, A. N. and Maleque, Md. Abdul and Yaacob, Iskandar Idris and -, Normiza and -, Noraini and Mridha, Shahjahan (2012) Failure of woven fiber glass epoxy composite under charpy impact loading. In: The 21st Scientific Conference of the Microscopy Society of Malaysia , 22 - 24 November 2012, Kota Bahru, Malaysia..

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Woven glass fiber reinforced epoxy composite at 55 vol% fiber content was fabricated using conventional hand lay-up method. The impact strength of the prepared samples were measured under Charpy impact test at +50oC and - 50oC temperature. The fractured surface of composite samples were investigated using scanning electron microscope. The impact energy for samples fractured at +50oC was at 380 KJm-2 whereas the low temperature of - 50oC showed impact energy of 178 KJm-2. The high plastic deformation from the sample tested at +50oC is the evidence from the high amount of absorbed energy compared to -50oC which revealed lower deformation. At this subzero temperature, the increased brittleness produced extensive matrix cracking and fiber splitting. However, scanning electron fractograph at +50oC showed mixed failure mode of large delaminations, fiber splitting and matrix cracking. The impact values of 380 KJm-2 and 178 KJm-2 tested at +50oC and -50oC respectively would suggest that this composite is suitable to replace steel for impact applications and is safe to be used at both high and low environmental temperatures.

Item Type: Conference or Workshop Item (Full Paper)
Additional Information: 6103/28168
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
T Technology > TN Mining engineering. Metallurgy > TN600 Metallurgy
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Prof Dr. Md Abdul Maleque
Date Deposited: 04 Jan 2013 14:17
Last Modified: 14 Feb 2013 02:07
URI: http://irep.iium.edu.my/id/eprint/28168

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