Testing and Analysis of the Inner Stress in Adhesive Coating Layer Using Strain Gauges and Finite Element Method

Xiao Ling Zheng; Min You; Yong Zheng; Hai Zhou Yu; Chun Mei Yang

doi:10.4028/www.scientific.net/MSF.490-491.667

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HomeMaterials Science ForumMaterials Science Forum Vols. 490-491Testing and Analysis of the Inner Stress in...

Testing and Analysis of the Inner Stress in Adhesive Coating Layer Using Strain Gauges and Finite Element Method

Abstract:

The residual stress in epoxy adhesive layer deposited on metal and other substrate at room temperature is studied. With embedded strain gauges in arranged depth of epoxy layer, the strain changes in the adhesive layer induced by the curing procedure and the changes of ambient temperature were measured to evaluate the changes of residual stress in place during a period after the curing procedure finished. The actual strain in epoxy adhesive layer from curing is used to estimate the residual stresses in it. While taking the strain obtained from the surface of the adhesive layer as free strain, the residual stress can be calculated and presented a strongly cyclic variation with a period of 24 h. The inner stress is also analyzed using the finite element method.

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Periodical:

Materials Science Forum (Volumes 490-491)

Pages:

667-671

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.490-491.667

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Online since:

July 2005

Authors:

Xiao Ling Zheng, Min You, Yong Zheng, Hai Zhou Yu, Chun Mei Yang

Keywords:

Coating Layer, Epoxy Resin (ER), Finite Element Analysis (FEA), Inner Stress, Metal Substrate, Temperature Variation

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