TY - JOUR
T1 - A theoretical model for nondestructive evaluation of damage of adhesive joints
AU - Shui, Guoshuang
AU - Wang, Yuesheng
AU - Qu, Jianmin
PY - 2006
Y1 - 2006
N2 - 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.
AB - 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.
KW - Adhesive joints
KW - Damage
KW - Microcracks
KW - Nondestructive evaluation
KW - Nonlinear ultrasonic
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U2 - 10.4028/0-87849-413-8.339
DO - 10.4028/0-87849-413-8.339
M3 - Article
AN - SCOPUS:33750901859
SN - 1013-9826
VL - 324-325 I
SP - 339
EP - 342
JO - Key Engineering Materials
JF - Key Engineering Materials
ER -