000000806 001__ 806
000000806 005__ 20141118153515.0
000000806 04107 $$acze
000000806 046__ $$k2002-05-13
000000806 100__ $$aBurša, Jiří
000000806 24500 $$aEXPERIMENTAL-COMPUTATIONAL ANALYSIS OF COHESION TESTS
000000806 24630 $$n8.$$pEngineering Mechanics 2002
000000806 260__ $$bInstitute of Mechanics and Solids, FME, TU Brno
000000806 506__ $$arestricted
000000806 520__ $$2cze$$aAbstrakt: The paper compares various types of cohesion tests used in testing of adhesive connection of two materials. The computational modelling using FEM confirms that all the usual or normalized cohesion strength tests result in a pronounced stress concentration in some part of the contact surface of both materials. This concentration disables any evaluation of limit values of quantities crucial for decohesion of the materials and the tests differing in a single geometric parameter of the test sample cannot be compared. The authors suggest torsion tests as more convenient for cohesion strength tests. The computational simulation of the test using hyperelastic FEA showed, that no stress concentration occurs in this type of test and the stress state is homogeneous on all the contact surface. This fact enables a simple evaluation of shear stress in the test. The evaluated limit shear stress should be the material characteristic of the cohesion strength. Some few examples were realized to verifY this tests.
000000806 520__ $$2eng$$aAbstract: The paper compares various types of cohesion tests used in testing of adhesive connection of two materials. The computational modelling using FEM confirms that all the usual or normalized cohesion strength tests result in a pronounced stress concentration in some part of the contact surface of both materials. This concentration disables any evaluation of limit values of quantities crucial for decohesion of the materials and the tests differing in a single geometric parameter of the test sample cannot be compared. The authors suggest torsion tests as more convenient for cohesion strength tests. The computational simulation of the test using hyperelastic FEA showed, that no stress concentration occurs in this type of test and the stress state is homogeneous on all the contact surface. This fact enables a simple evaluation of shear stress in the test. The evaluated limit shear stress should be the material characteristic of the cohesion strength. Some few examples were realized to verifY this tests.
000000806 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000000806 7112_ $$aEngineering Mechanics 2002$$cSvratka (CZ)$$d2002-05-13 / 2002-05-16$$gEM2002
000000806 720__ $$aBurša, Jiří
000000806 8560_ $$ffischerc@itam.cas.cz
000000806 8564_ $$s237265$$uhttps://invenio.itam.cas.cz/record/806/files/Bursa.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000000806 962__ $$r451
000000806 980__ $$aPAPER