Article Modified double cantilever beam test method for mode-I energy release rate of elastic adhesive layers

Tetsuya Morimoto ; Hisaya Katoh ; Yuichi Ishida ; Eiichi Hara ; Masahiro Kusano SAMURAI ORCID (National Institute for Materials Science) ; Kimiyoshi Naito SAMURAI ORCID (National Institute for Materials Science) ; Makoto Watanabe SAMURAI ORCID (National Institute for Materials Science) ; Kiyoka Takagi ; Keiji Arai ; Koichi Hasegawa

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Tetsuya Morimoto, Hisaya Katoh, Yuichi Ishida, Eiichi Hara, Masahiro Kusano, Kimiyoshi Naito, Makoto Watanabe, Kiyoka Takagi, Keiji Arai, Koichi Hasegawa. Modified double cantilever beam test method for mode-I energy release rate of elastic adhesive layers. Engineering Fracture Mechanics. 2024, 307 (), 110320.
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(abstract)

This study proposes a Mode I double cantilever beam (DCB) test method for debonding thick elastic adhesive layers. The approach integrates Bernoulli-Euler beams connected via spring elements akin to Winkler’s foundation. Energy release rate determination considers crack length correlation with elastic deformation in the crack-front region, accounting for both beam rotation and lateral movement. Evaluation of Ti6Al4V samples bonded with FM 309 adhesive revealed higher initial energy release rates with the conventional beam theory and conservative values with the modified beam theory. The proposed method offered improved consistency, and less conservative energy release rate values compared to the modified theory.

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Keyword: DCB test, Adhesive layer, Elasticity, Winkler’s foundation, Energy release rate, Bernulli–Euler beam

Date published: 2024-07-20

Publisher: Elsevier BV

Journal:

  • Engineering Fracture Mechanics (ISSN: 00137944) vol. 307 110320

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Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.1016/j.engfracmech.2024.110320

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Updated at: 2024-11-21 16:30:19 +0900

Published on MDR: 2024-11-21 16:30:19 +0900

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