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Crack length dependence of mode III delamination using edge crack torsion test

The objective of this study is to compare the mode III delamination behavior of edge crack torsion (ECT) specimens at different initial crack lengths, ao. Finite element models of ECT specimens at ao = 20 mm and 30 mm were developed based on the data from the literature. Delamination behavior was in...

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Main Authors: Wong, K. J., Israr, H. A., Tamin, M. N.
Format: Article
Published: International Journal of Mechanical Engineering and Robotics Research 2017
Subjects:
TJ Mechanical engineering and machinery
Online Access:http://eprints.utm.my/id/eprint/80558/
http://dx.doi.org/10.18178/ijmerr.6.3.219-225
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spelling my.utm.805582019-05-23T03:04:56Z http://eprints.utm.my/id/eprint/80558/ Crack length dependence of mode III delamination using edge crack torsion test Wong, K. J. Israr, H. A. Tamin, M. N. TJ Mechanical engineering and machinery The objective of this study is to compare the mode III delamination behavior of edge crack torsion (ECT) specimens at different initial crack lengths, ao. Finite element models of ECT specimens at ao = 20 mm and 30 mm were developed based on the data from the literature. Delamination behavior was investigated using cohesive zone modeling, where cohesive elements were placed at the mid-thickness of the specimens. Results showed that the experimental and numerical force-displacement curves were comparable, with less than 10% difference in the slopes and peak loads. In addition, it was found that the cohesive zone in both models contained three elements. Furthermore, the crack front (CF) and fracture process zone (FPZ) contours revealed that the largest crack extensions were found at normalized locations of approximately 0.4 and 0.7 for ao = 20 mm and 30 mm specimens, respectively. Finally, comparison between the fracture energy distributions and phase angle indicated that at least 30% of the crack front was mode III dominant, with phase angle of 85° and above. International Journal of Mechanical Engineering and Robotics Research 2017 Article PeerReviewed Wong, K. J. and Israr, H. A. and Tamin, M. N. (2017) Crack length dependence of mode III delamination using edge crack torsion test. International Journal of Mechanical Engineering and Robotics Research, 6 (3). pp. 219-225. ISSN 2278-0149 http://dx.doi.org/10.18178/ijmerr.6.3.219-225 DOI:10.18178/ijmerr.6.3.219-225
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TJ Mechanical engineering and machinery
spellingShingle TJ Mechanical engineering and machinery
Wong, K. J.
Israr, H. A.
Tamin, M. N.
Crack length dependence of mode III delamination using edge crack torsion test
description The objective of this study is to compare the mode III delamination behavior of edge crack torsion (ECT) specimens at different initial crack lengths, ao. Finite element models of ECT specimens at ao = 20 mm and 30 mm were developed based on the data from the literature. Delamination behavior was investigated using cohesive zone modeling, where cohesive elements were placed at the mid-thickness of the specimens. Results showed that the experimental and numerical force-displacement curves were comparable, with less than 10% difference in the slopes and peak loads. In addition, it was found that the cohesive zone in both models contained three elements. Furthermore, the crack front (CF) and fracture process zone (FPZ) contours revealed that the largest crack extensions were found at normalized locations of approximately 0.4 and 0.7 for ao = 20 mm and 30 mm specimens, respectively. Finally, comparison between the fracture energy distributions and phase angle indicated that at least 30% of the crack front was mode III dominant, with phase angle of 85° and above.
format Article
author Wong, K. J.
Israr, H. A.
Tamin, M. N.
author_facet Wong, K. J.
Israr, H. A.
Tamin, M. N.
author_sort Wong, K. J.
title Crack length dependence of mode III delamination using edge crack torsion test
title_short Crack length dependence of mode III delamination using edge crack torsion test
title_full Crack length dependence of mode III delamination using edge crack torsion test
title_fullStr Crack length dependence of mode III delamination using edge crack torsion test
title_full_unstemmed Crack length dependence of mode III delamination using edge crack torsion test
title_sort crack length dependence of mode iii delamination using edge crack torsion test
publisher International Journal of Mechanical Engineering and Robotics Research
publishDate 2017
url http://eprints.utm.my/id/eprint/80558/
http://dx.doi.org/10.18178/ijmerr.6.3.219-225
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score 13.211869

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