An Experimental investigation of failure initiation in bonded joints

Z. Qian; A. R. Akisanya

doi:10.1016/S1359-6454(98)00200-6

An Experimental investigation of failure initiation in bonded joints

Z. Qian, A. R. Akisanya^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

91 Citations (Scopus)

Abstract

The effects of cure temperature on the tensile strength of scarf joints between aluminium substrate and epoxy resins are examined. The measured tensile strengths showed strong dependence on the adhesive layer thickness, cure temperature and the scarf angle. A failure initiation criterion is proposed for bonded joints subjected to a combination of thermal and mechanical loading, based upon the critical value of a free-edge stress intensity factor. Free-edge failure occurs when the free-edge intensity factor attains a critical value irrespective of the cure temperature and layer thickness.

Original language	English
Pages (from-to)	4895-4904
Number of pages	10
Journal	Acta Materialia
Volume	46
Issue number	14
DOIs	https://doi.org/10.1016/S1359-6454(98)00200-6
Publication status	Published - 1 Sept 1998

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10.1016/S1359-6454(98)00200-6

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title = "An Experimental investigation of failure initiation in bonded joints",

abstract = "The effects of cure temperature on the tensile strength of scarf joints between aluminium substrate and epoxy resins are examined. The measured tensile strengths showed strong dependence on the adhesive layer thickness, cure temperature and the scarf angle. A failure initiation criterion is proposed for bonded joints subjected to a combination of thermal and mechanical loading, based upon the critical value of a free-edge stress intensity factor. Free-edge failure occurs when the free-edge intensity factor attains a critical value irrespective of the cure temperature and layer thickness.",

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N2 - The effects of cure temperature on the tensile strength of scarf joints between aluminium substrate and epoxy resins are examined. The measured tensile strengths showed strong dependence on the adhesive layer thickness, cure temperature and the scarf angle. A failure initiation criterion is proposed for bonded joints subjected to a combination of thermal and mechanical loading, based upon the critical value of a free-edge stress intensity factor. Free-edge failure occurs when the free-edge intensity factor attains a critical value irrespective of the cure temperature and layer thickness.

AB - The effects of cure temperature on the tensile strength of scarf joints between aluminium substrate and epoxy resins are examined. The measured tensile strengths showed strong dependence on the adhesive layer thickness, cure temperature and the scarf angle. A failure initiation criterion is proposed for bonded joints subjected to a combination of thermal and mechanical loading, based upon the critical value of a free-edge stress intensity factor. Free-edge failure occurs when the free-edge intensity factor attains a critical value irrespective of the cure temperature and layer thickness.

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An Experimental investigation of failure initiation in bonded joints

Abstract

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