FN Archimer Export Format PT J TI Analysis of the nonlinear behavior of adhesives in bonded assemblies - Comparison of TAST and Arcan tests BT AF COGNARD, J CREAC' HCADEC, R SOHIER, L DAVIES, Peter AS 1:1;2:1;3:2;4:3; FF 1:;2:;3:;4:PDG-DOP-DCB-ERT-MS; C1 ENSIETA, Mech Naval & Offshore Struct, F-29806 Brest, France. UBO, Lab Ingn Mecan & Elect, F-29285 Brest, France. IFREMER, Ctr Brest, Mat & Struct Grp, F-29280 Plouzane, France. C2 ENSIETA, FRANCE UBO, FRANCE IFREMER, FRANCE SI BREST SE PDG-DOP-DCB-ERT-MS IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france IF 1.678 TC 77 UR https://archimer.ifremer.fr/doc/2008/publication-4646.pdf LA English DT Article DE ;Adhesive testing;Mechanical properties of adhesives;Stress distribution;Epoxy/epoxides AB This paper describes a study in which the shear behavior of a structural epoxy adhesive has been measured using the standard thick adherend shear test (TAST) specimen and a modified Arcan test A. numerical study of the TAST test taking into account the nonlinear behavior of the adhesive and the finite deformations of the adhesive joint, shows that there is a localization of plastic zones close to the adhesive-substrate interface near the free edge of the adhesive. Experimental tests carried out with steel and aluminum substrates and with various adhesives also show that failure initiates in this region. These edge effects in the TAST fixture can lead to an incorrect analysis of the behavior of the adhesive (for instance, underestimation of the shear stress in the joint at failure) particularly when an adhesive, failure mode is dominating. The modified Arcan fixture provides a more homogeneous stress state. A similar improvement of the TAST fixture is proposed. (c) 2008 Elsevier Ltd. All rights reserved. PY 2008 PD DEC SO International Journal of Adhesion and Adhesives SN 0143-7496 PU Elsevier VL 28 IS 8 UT 000259436100002 BP 393 EP 404 DI 10.1016/j.ijadhadh.2008.04.006 ID 4646 ER EF