Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens

Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens

This paper studies the effect of tensile properties mismatch on fracture driving force in sandwich plates using Double Edge Notched Tension (DENT) specimens. Notched specimens are used due to the difficulty in fatigue pre-cracking small sized specimens of sandwich plates. Two sandwich plates, SP1 an...

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Main Authors: A.G. Ahmed, M.M. Ghoneim, M.F. Abdelhameed
Format: Article
Language:English
Published: Elsevier 2018-12-01
Series:Alexandria Engineering Journal
Online Access:http://www.sciencedirect.com/science/article/pii/S1110016818301832
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spelling doaj-858fbfc3ec01466b8278e2b6bf33dc512021-06-02T13:59:20ZengElsevierAlexandria Engineering Journal1110-01682018-12-0157438893898Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimensA.G. Ahmed0M.M. Ghoneim1M.F. Abdelhameed2Nuclear Metallurgy Department, Nuclear Research Center, Atomic Energy Authority, Egypt; Corresponding author.Nuclear Metallurgy Department, Nuclear Research Center, Atomic Energy Authority, EgyptDepartment of Production Engineering and Mechanical Design, Faculty of Engineering, Menoufia University, EgyptThis paper studies the effect of tensile properties mismatch on fracture driving force in sandwich plates using Double Edge Notched Tension (DENT) specimens. Notched specimens are used due to the difficulty in fatigue pre-cracking small sized specimens of sandwich plates. Two sandwich plates, SP1 and SP2, composed of different aluminum alloys layers are studied. AA6061 is used as cladding material in both cases while AA2017 and Al 1100 are used as core materials for SP1 and SP2, respectively. Homogenous specimens made of AA6061 are also studied for comparison. The critical fracture load is determined experimentally. Finite element elastic-plastic analysis is performed to evaluate the effect of tensile properties mismatch on fracture driving force ahead of notch tip, Jtip.The results showed that tensile properties mismatch between sandwich plate layers affects Jtip values. In case of SP1, the notch tip is shielded from the remote loading where Jtip is smaller than the remote one vice versa in case of SP2 where Jtip is amplified. It is demonstrated that the amount of shielding is normally less than amplification. In the meantime, notch depth plays an important role in the fracture process while effect of the studied notch radius is minor. Keywords: Sandwich, Mismatch, Shielding, Amplification, Notch, Fracturehttp://www.sciencedirect.com/science/article/pii/S1110016818301832
collection DOAJ
language English
format Article
sources DOAJ
author A.G. Ahmed
M.M. Ghoneim
M.F. Abdelhameed
spellingShingle A.G. Ahmed
M.M. Ghoneim
M.F. Abdelhameed
Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens
Alexandria Engineering Journal
author_facet A.G. Ahmed
M.M. Ghoneim
M.F. Abdelhameed
author_sort A.G. Ahmed
title Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens
title_short Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens
title_full Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens
title_fullStr Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens
title_full_unstemmed Effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens
title_sort effect of tensile properties mismatch on fracture driving force in sandwich plates using notched specimens
publisher Elsevier
series Alexandria Engineering Journal
issn 1110-0168
publishDate 2018-12-01
description This paper studies the effect of tensile properties mismatch on fracture driving force in sandwich plates using Double Edge Notched Tension (DENT) specimens. Notched specimens are used due to the difficulty in fatigue pre-cracking small sized specimens of sandwich plates. Two sandwich plates, SP1 and SP2, composed of different aluminum alloys layers are studied. AA6061 is used as cladding material in both cases while AA2017 and Al 1100 are used as core materials for SP1 and SP2, respectively. Homogenous specimens made of AA6061 are also studied for comparison. The critical fracture load is determined experimentally. Finite element elastic-plastic analysis is performed to evaluate the effect of tensile properties mismatch on fracture driving force ahead of notch tip, Jtip.The results showed that tensile properties mismatch between sandwich plate layers affects Jtip values. In case of SP1, the notch tip is shielded from the remote loading where Jtip is smaller than the remote one vice versa in case of SP2 where Jtip is amplified. It is demonstrated that the amount of shielding is normally less than amplification. In the meantime, notch depth plays an important role in the fracture process while effect of the studied notch radius is minor. Keywords: Sandwich, Mismatch, Shielding, Amplification, Notch, Fracture
url http://www.sciencedirect.com/science/article/pii/S1110016818301832
work_keys_str_mv AT agahmed effectoftensilepropertiesmismatchonfracturedrivingforceinsandwichplatesusingnotchedspecimens
AT mmghoneim effectoftensilepropertiesmismatchonfracturedrivingforceinsandwichplatesusingnotchedspecimens
AT mfabdelhameed effectoftensilepropertiesmismatchonfracturedrivingforceinsandwichplatesusingnotchedspecimens
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