FEM Analysis and Experimental Study for Bond Strength of High-Strength Coating by Wedged Load Test Method

Zhou Wei; Xiao Xia Zhang

doi:10.4028/www.scientific.net/AMR.152-153.1058

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 152-153FEM Analysis and Experimental Study for Bond...

FEM Analysis and Experimental Study for Bond Strength of High-Strength Coating by Wedged Load Test Method

Abstract:

A wedged load test method is used to evaluate the adhesion strength of high-strength coatings, which have been processed with various sintering parameters. In this test, for stress concentration at cut tip, cracks are always induced and expanded rapidly cross the interface between coating and substrate. Macro-fracture and SEM image of coating interface of high-strength coating are characterized using optical microscope and scanning electron microscopy (SEM), respectively. In order to evaluate the bonding properties between coating and substrate effectively, corresponding finite element (FE) analysis has been conducted to evaluate the adhesion strength of high-strength coating. And stress distributions cross the interface of high-strength coating are obtained. The stress analysis can help to evaluate the bond strength of high-strength coating. Because of small specimen and contact relationship between wedged pressure head and wedged cuts, complex stress state is affected by many factors resulting from interface, and also by the thickness of coating.

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Periodical:

Advanced Materials Research (Volumes 152-153)

Pages:

1058-1061

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.152-153.1058

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Online since:

October 2010

Authors:

Zhou Wei, Xiao Xia Zhang

Keywords:

Bond Strength, Finite Element Model (FEM), High-Strength Coating, Wedged Load Test Method

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