Paper Title:
Contact Damage in Curved Porcelain/Metal Bilayers
  Abstract

This paper aims to assess the effect of shape irregularity on contact damage in a brittle coating on a stiff metal substrate. Hertzian contact damage in a dental porcelain layer over a Ni-Cr alloy substrate in both curved and flat geometries was studied using finite element analysis and experimental investigation. Three failure modes were examined with varying porcelain layer thickness: cone cracking at the top surface of the porcelain, interface cracking at the layer/substrate interface and plastic deformation below the contact area in the substrate. It is shown that curvature has very little effect on the initiation of surface cone cracks in this system, but substantial effect on the initiation of interface radial cracks. In particular, curvature reduces the critical load for the onset of interface cracks

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
375-380
DOI
10.4028/www.scientific.net/KEM.261-263.375
Citation
T. Qasim, M. Bush, X. Z. Hu, "Contact Damage in Curved Porcelain/Metal Bilayers", Key Engineering Materials, Vols. 261-263, pp. 375-380, 2004
Online since
April 2004
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Sung Sic Hwang, Sang Whan Park, Seong Jai Cho, Dong Bok Lee
Abstract:The contact fracture behaviors of fine-grained Ti3SiC2 and coarse-grained high purity Ti3SiC2 are examined by the Hertzian indentation and...
217
Authors: Yo Seung Song, Il Seok Park, Ju-Woong Jang, Deuk Yong Lee, Se Jong Lee
Abstract:Hertzian cyclic fatigue properties of the glass-infiltrated alumina and spinel were evaluated using a WC sphere of radius of 3.18 mm in...
225
Authors: Luca Ceseracciu, Francis Chalvet, Emilio Jiménez-Piqué, Marc Anglada, Goffredo de Portu
Abstract:In this work, the study of the contact fatigue of an alumina-based laminated composite with compressive residual stress in the surface is...
222
Authors: Hong Zeng, Hong Jie Wang, Dan Bo Lin, Yu Bai, Guan Jun Qiao, Ji Qiang Gao
Abstract:Highly porous Si3N4 ceramics in service are usually subjected to continuous impact of solid particles which may give rise to localized...
339
Authors: H.B. Zhou, Yi Wang Bao, Yan Qiu, Lan Chen, Xiu Fang Wang, Kun Ming Li
Abstract:Initiation and propagation of Hertz crack in glass was investigated by combining sphere indentation test and optical microscope under a...
451