Paper Title:
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.

  Info
Periodical
Advanced Materials Research (Volumes 152-153)
Edited by
Zhengyi Jiang, Jingtao Han and Xianghua Liu
Pages
1058-1061
DOI
10.4028/www.scientific.net/AMR.152-153.1058
Citation
Z. Wei, X. X. Zhang, "FEM Analysis and Experimental Study for Bond Strength of High-Strength Coating by Wedged Load Test Method", Advanced Materials Research, Vols. 152-153, pp. 1058-1061, 2011
Online since
October 2010
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Price
$32.00
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