<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>This article describes recent refinement of the traditional wedge test technique used to characterize durability of the adhesive joints. We propose two types of measuring protocols to monitor precisely and continuously the propagation of an "effective" crack during long term mode I fracture mechanic test. First method is directly derived from the traditional wedge test technique and consist in monitoring the surface strain of adherent with resistive gauges. The second method consist in replacing constant applied displacement by constant force loading and monitoring the beam deflection. Applications of these techniques are presented concerning crack propagation and nucleation monitoring leading to better understanding of the phenomena occurring in the joint subjected to an external load.</p></abstract>

This article describes recent refinement of the traditional wedge test technique used to characterize durability of the adhesive joints. We propose two types of measuring protocols to monitor precisely and continuously the propagation of an "effective" crack during long term mode I fracture mechanic test. First method is directly derived from the traditional wedge test technique and consist in monitoring the surface strain of adherent with resistive gauges. The second method consist in replacing constant applied displacement by constant force loading and monitoring the beam deflection. Applications of these techniques are presented concerning crack propagation and nucleation monitoring leading to better understanding of the phenomena occurring in the joint subjected to an external load.

Two tests for adhesive bonding long term characterization: principles and applications

Institute de Mécanique et d'Ingénierie Bordeaux UMR CNRS 5295, Université de Bordeaux, Talence 33405, France

Advances in Materials Science

This article describes recent refinement of the traditional wedge test technique used to characterize durability of the adhesive joints. We propose two types...

Two tests for adhesive bonding long term characterization: principles and applications

Published Online: Jul 12, 2011

Page range: 44 - 55

DOI: https://doi.org/10.2478/v10077-011-0010-z

Keywords
adhesion, fracture, wedge test, constant force test, durability

This content is open access.

Two tests for adhesive bonding long term characterization: principles and applications

Published Online: Jul 12, 2011

Page range: 44 - 55

DOI: https://doi.org/10.2478/v10077-011-0010-z

Keywordsadhesion, fracture, wedge test, constant force test, durability

This content is open access.

Keywords
adhesion, fracture, wedge test, constant force test, durability