Investigation on simplified equation for estimating J-integral of adhesive joint and its application to galvannealed steel plate+1

Kensuke Ogawa; Ryusei Maeda; Takaya Kobayashi; Eiichiro Yokoi; Toru Furusawa; Kenji Takada; Masaki Omiya

doi:10.2320/matertrans.Z-M2019831

Investigation on simplified equation for estimating J-integral of adhesive joint and its application to galvannealed steel plate⁺1

Kensuke Ogawa, Ryusei Maeda, Takaya Kobayashi, Eiichiro Yokoi, Toru Furusawa, Kenji Takada, Masaki Omiya

Department of Mechanical Engineering

Research output: Contribution to journal › Article

Abstract

Structural adhesives have been used to reduce weight and increase rigidity in recent automotive developments. This study focuses on the fracture behaviors of the cohesive zone under mixed-mode conditions, and a method for evaluation of the J-integral parameters using the displacement of the crack tip opening is proposed. The method is an application of the Dugdale model, which is known as an ideal model to work with a localized plasticity ahead of the crack tip. The validity of the method is verified through finite element analysis. Furthermore, the method is applied to adhesive joints on galvannealed steel, and its fracture mechanism is investigated.

Original language	English
Pages (from-to)	1928-1935
Number of pages	8
Journal	Materials Transactions
Volume	60
Issue number	9
DOIs	https://doi.org/10.2320/matertrans.Z-M2019831
Publication status	Published - 2019 Jan 1

Keywords

Automotive adhesives
Crack tip opening displacement
Digital image correlation
Dugdale model
Finite element method
J-integral
Mixed-mode fracture

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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Ogawa, K., Maeda, R., Kobayashi, T., Yokoi, E., Furusawa, T., Takada, K., & Omiya, M. (2019). Investigation on simplified equation for estimating J-integral of adhesive joint and its application to galvannealed steel plate⁺1. Materials Transactions, 60(9), 1928-1935. https://doi.org/10.2320/matertrans.Z-M2019831

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abstract = "Structural adhesives have been used to reduce weight and increase rigidity in recent automotive developments. This study focuses on the fracture behaviors of the cohesive zone under mixed-mode conditions, and a method for evaluation of the J-integral parameters using the displacement of the crack tip opening is proposed. The method is an application of the Dugdale model, which is known as an ideal model to work with a localized plasticity ahead of the crack tip. The validity of the method is verified through finite element analysis. Furthermore, the method is applied to adhesive joints on galvannealed steel, and its fracture mechanism is investigated.",

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AU - Ogawa, Kensuke

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AU - Furusawa, Toru

AU - Takada, Kenji

AU - Omiya, Masaki

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