PSI - Issue 41

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ScienceDirect Structural Integrity Procedia 00 (2022) 000 – 000 vailable online at .sciencedirect.co i ir t Structural Integrity Procedia 00 (2022) 000 – 000

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Procedia Structural Integrity 41 (2022) 87–93

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Abstract In the present work, a new and novel test specimen is presented to solve the difficulties and problems of traditional adhesive fracturing test specimens. The specimen is a bi-material adhesive joint in the shape of a rectangular beam and containing a vertical crack in the adhesive layer. If the specimen is loaded by a three-point bend setup with symmetric or asymmetric bottom span supports relative to the crack, opening deformation any desired combination of opening and shear deformations is achieved, respectively. The results demonstrated that the proposed test specimen could be used to introduce the full range of mode mixities from pure opening mode to pure shearing mode for adhesively bonded joints with similar and dissimilar adherents (such as Alumina and Aluminum) by changing the position of the bottom span supports. The variations of mode I and mode II geometry factors, normalized T-stress, biaxiality ratio, crack tip plastic zone and also the direction of fracture initiation angle are also presented for the analyzed test specimen by using the ABAQUS commercial code. As a result, the suggested specimen can be recommended as a potential candidate specimen for fracture studies of adhesively bonded joints subjected to in-plane loading conditions. © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. Keywords: Bi-material adhesively bonded joint; Novel test spacimen; Asymmetric beam bend; Fracture parameters; Mixed mode I/II; Finite element analysis bstract In the present ork, a ne and novel test speci en is presented to solve the difficulties and proble s of traditional adhesive fracturing test speci ens. The speci en is a bi- aterial adhesive joint in the shape of a rectangular bea and containing a vertical crack in the adhesive layer. If the speci en is loaded by a three-point bend setup ith sy etric or asy etric botto span supports relative to the crack, opening defor ation any desired co bination of opening and shear defor ations is achieved, respectively. The results de onstrated that the proposed test speci en could be used to introduce the full range of ode ixities fro pure opening ode to pure shearing ode for adhesively bonded joints ith si ilar and dissi ilar adherents (such as lu ina and lu inu ) by changing the position of the botto span supports. The variations of ode I and ode II geo etry factors, nor alized T-stress, biaxiality ratio, crack tip plastic zone and also the direction of fracture initiation angle are also presented for the analyzed test speci en by using the S co ercial code. s a result, the suggested speci en can be reco ended as a potential candidate speci en for fracture studies of adhesively bonded joints subjected to in-plane loading conditions. 2022 The uthors. Published by ELSE IE . . This is an open access article under the CC BY-NC-ND license (https://creativeco ons.org/licenses/by-nc-nd/4.0) Peer-revie under responsibility of the edFract2 uest Editors. Keywords: Bi- aterial adhesively bonded joint; ovel test spaci en; sy etric bea bend; Fracture para eters; ixed ode I/II; Finite ele ent analysis 2nd Mediterranean Conference on Fracture and Structural Integrity In-plane fracture analysis of bi-material adhesively bonded joints by using a simple bend beam specimen M.R.M. Aliha a *, H.G. Kucheki a , S.M.J. Razavi b a Welding and Joining Research Center, School of Industrial Engineering, Iran University of Science and Technology (IUST), Tehran 16846 13114, Iran b Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology, Richard Birkeland vei 2B, 7491, Trondheim, Norway ract re a tr ct ral I te rit l t l i i t i l i l j i t i i l i .R.M. Ali a , . . i a , .M.J. i b a elding and Joining Research Center, School of Industrial Engineering, Iran niversity of Science and Technology (I ST), Tehran 16846 13114, Iran b epart ent of echanical and Industrial Engineering, Norwegian niversity of Science and Technology, Richard Birkeland vei 2B, 7491, Trondhei , Norway e iterra ea fere ce

* Corresponding author. Tel.: +98-21-73225031; fax: +98-21-73225098. E-mail address: mrm_aliha@iust.ac.ir * Corresponding author. Tel.: +98-21-73225031; fax: +98-21-73225098. E- ail address: r _aliha iust.ac.ir

2452-3216 © 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license ( https://creativecommons.org/licenses/by-nc-nd/4.0 ) Peer-review under responsibility of the MedFract2Guest Editors. 2022 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC B - C- license ( https://creativeco ons.org/licenses/by-nc-nd/4.0 ) Peer-revie under responsibility of the edFract2 uest Editors. 2452-3216

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the MedFract2Guest Editors. 10.1016/j.prostr.2022.05.011