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Contact acoustic nonlinearity in a bonded solid-solid interface
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DOI：10.1016/j.ultras.2006.05.051.png)
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We have conducted research on the contact acoustic nonlinearity (CAN) produced by a bonded solid-solid interface in order to find a nondestructive and quantitative method to evaluate the bonding strength of the interface. A CAN model is used to depict a bonded state from the relationship between the CAN parameter and the bonding strength and the crack width in the interface. According to this model, a nondestructive evaluation of the bonding strength can be established. When the CAN parameter and the crack width are measured, the bonding strength can be calculated from the model. In this paper, the bonding strengths of some samples are evaluated based on the CAN method. The results well agree with the bonding strengths measured by hanging clogs (weights) to destroy their interfaces. (c) 2006 Elsevier B.V. All rights reserved.
Keyword:
bonding strength
contact acoustic nonlinearity
nondestructive test
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