Study on interfacial fracture behaviors of the porcelain-fused-to-metal restoration by moire interferometry method and finite element analysis

被引：0

作者：

Fang, RH ^{[1
]}

Wang, DM ^{[1
]}

Zhang, XY ^{[1
]}

机构：

[1] Tongji Univ, Key Lab Solid Mech MEC, Shanghai 200092, Peoples R China

来源：

THIRD INTERNATIONAL CONFERENCE ON EXPERIMENTAL MECHANICS | 2002年 / 4537卷

关键词：

PFM; crack-kinking angle; thickness ratio; bimaterial interface crack; FEA; complex intensity factor;

D O I：

10.1117/12.468830

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

In this paper, moire interferometry and finite element analysis (FEA) have been applied to study interface fracture behaviors of Porcelain-Fused-to-metal(PFM) restoration. The fracture criterion of an interface crack between the porcelain and metal is based on the maximum stress (sigma(thetamax)). The influence of the thickness ratio, load value and load form on the predicted kinking angles has been proposed and discussed. It is shown that the predicted kinking angle does not varied with load value. The magnitude of crack-kinking angle is more sensitive to load form than to thickness ratio. Measured data accord well with numerical value. These results provide data for the optimized design of clinical PFM restoration and for understanding fracture mechanism of the restoration.

引用

页码：233 / 236

页数：4