A theoretical model for nondestructive evaluation of damage of adhesive joints

Guoshuang Shui, Yuesheng Wang, Jianmin Qu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

In this paper, a new theoretical model is developed to characterize the damage of the adhesive joint. Elastic modulus of adhesive joints is an important parameter to represent damage characteristics. Based on the fact that the thickness of the adhesive layer is very small, it is reasonable to believe that damage will decrease the tension modulus of the adhesive joint while the compression modulus will keep unchanged. Modeling the adhesive joint as an interface with different modulus in tension and compression, and applying integral transform method, we solve the associated nonlinear boundary problem to obtain the nonlinear ultrasonic waves transmitting through the adhesive layer. With this nonlinear ultrasonic wave, variation of elastic modulus and damage variable of the adhesive layer are thereafter characterized nondestructively by a nonlinear coefficient.

Original languageEnglish
Pages (from-to)339-342
Number of pages4
JournalKey Engineering Materials
Volume324-325 I
DOIs
StatePublished - 2006

Keywords

  • Adhesive joints
  • Damage
  • Microcracks
  • Nondestructive evaluation
  • Nonlinear ultrasonic

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