Location of Initial Debonding and Stress Singularity at Interface End

Abstract:

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Interfacial stress distribution of bonded quarter-planes subjected to a concentrated force was re-investigated based on Bogy’s solution[1]. The characteristic length of the singular interface end, δ, was defined, and found varying in a very large size scale with the index of stress singularity from millimeter to nanometer or even smaller scale. The influences the characteristic length scale on the initial debonding of the interface end is a new question worth to pay attention. Photoelasticity experiment was employed to verify whether the initial debonding is always located at interface end with stress singularity. The test results show that the initial debonding does not start from singular interface end if the index of stress singularity is small enough.

Info:

Periodical:

Advanced Materials Research (Volumes 33-37)

Edited by:

Wei Yang, Mamtimin Geni, Tiejun Wang and Zhuo Zhuang

Pages:

315-320

DOI:

10.4028/www.scientific.net/AMR.33-37.315

Citation:

Y. Dai et al., "Location of Initial Debonding and Stress Singularity at Interface End", Advanced Materials Research, Vols. 33-37, pp. 315-320, 2008

Online since:

March 2008

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Price:

$35.00

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