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Dynamic fracture toughness of magnesium alloy under impact loading conditions

Malaysian Technical Universities Conference on Engineering and Technology (MUCET) 2012 organised by technical universities under the Malaysian Technical Universities Network (MTUN), 20th - 21st November 2012 at Hotel Seri Malaysia, Kangar, Perlis, Malaysia.

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Bibliographic Details
Main Authors: Mohd Ahadlin, Mohd Daud, Nurulhilmi Zaedah, Nasir, Ahmad, Rivai, Mohd Zulkefli, Selamat
Other Authors: ahadlin@utem.edu.my
Format: Working Paper
Language:English
Published: Malaysian Technical Universities Network (MTUN) 2013
Subjects:
Dynamic fracture toughness
AZ61 magnesium alloy
Impact loading
Charpy impact test
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/27367
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spelling my.unimap-273672013-08-05T01:07:50Z Dynamic fracture toughness of magnesium alloy under impact loading conditions Mohd Ahadlin, Mohd Daud Nurulhilmi Zaedah, Nasir Ahmad, Rivai Mohd Zulkefli, Selamat ahadlin@utem.edu.my Dynamic fracture toughness AZ61 magnesium alloy Impact loading Charpy impact test Malaysian Technical Universities Conference on Engineering and Technology (MUCET) 2012 organised by technical universities under the Malaysian Technical Universities Network (MTUN), 20th - 21st November 2012 at Hotel Seri Malaysia, Kangar, Perlis, Malaysia. In the present study, three-point bend impact experiments on AZ61 magnesium alloy were conducted using an instrumented impact testing machine by Charpy V notch in accordance to ASTM E24.03.03. This test method is to determine dynamic fracture toughness at sharp crack for five different thickness of 2, 4, 6, 8 and 10 mm. A sharp fatigue pre-crack was initiated and propagated to half of specimen width at a constant crack propagation rate of about 1 x 10-8 m/cycle before the specimen was loaded by the impact force until the maximum force is reached and then rapid fracture occurred. The Charpy V notch test was conducted at an impact velocity of 3.85 m/s. The dynamics fracture toughness at sharp crack was determined from the force-displacement history of the load point obtained from measurements of input and reflected strain profiles on the incident specimen. The dynamic fracture toughness Kd values obtained for different thicknesses showed that Kd value decreased with increasing specimen thickness. Scanning electron microscopy was used to elucidate the micro and macro failure mechanism operation during the dynamic fracture event. In particular two micro-mechanisms of failure were of primary interest: (a) fatigue and rapid fracture surface and (b) the development of shear lips at the surface of the specimen follow by fracture. 2013-08-05T01:07:50Z 2013-08-05T01:07:50Z 2012-11-20 Working Paper p. 307-311 http://hdl.handle.net/123456789/27367 en Proceedings of the Malaysian Technical Universities Conference on Engineering and Technology (MUCET) 2012 Malaysian Technical Universities Network (MTUN)
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Dynamic fracture toughness
AZ61 magnesium alloy
Impact loading
Charpy impact test
spellingShingle Dynamic fracture toughness
AZ61 magnesium alloy
Impact loading
Charpy impact test
Mohd Ahadlin, Mohd Daud
Nurulhilmi Zaedah, Nasir
Ahmad, Rivai
Mohd Zulkefli, Selamat
Dynamic fracture toughness of magnesium alloy under impact loading conditions
description Malaysian Technical Universities Conference on Engineering and Technology (MUCET) 2012 organised by technical universities under the Malaysian Technical Universities Network (MTUN), 20th - 21st November 2012 at Hotel Seri Malaysia, Kangar, Perlis, Malaysia.
author2 ahadlin@utem.edu.my
author_facet ahadlin@utem.edu.my
Mohd Ahadlin, Mohd Daud
Nurulhilmi Zaedah, Nasir
Ahmad, Rivai
Mohd Zulkefli, Selamat
format Working Paper
author Mohd Ahadlin, Mohd Daud
Nurulhilmi Zaedah, Nasir
Ahmad, Rivai
Mohd Zulkefli, Selamat
author_sort Mohd Ahadlin, Mohd Daud
title Dynamic fracture toughness of magnesium alloy under impact loading conditions
title_short Dynamic fracture toughness of magnesium alloy under impact loading conditions
title_full Dynamic fracture toughness of magnesium alloy under impact loading conditions
title_fullStr Dynamic fracture toughness of magnesium alloy under impact loading conditions
title_full_unstemmed Dynamic fracture toughness of magnesium alloy under impact loading conditions
title_sort dynamic fracture toughness of magnesium alloy under impact loading conditions
publisher Malaysian Technical Universities Network (MTUN)
publishDate 2013
url http://dspace.unimap.edu.my/xmlui/handle/123456789/27367
_version_ 1643795255975215104
score 13.214268

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