Using moiré interferometre in the study of porcelain-fused-metal interfacial fracture mechanics.

Author: Zi-yuan ZHU ¹ ; Bao-wei ZHANG ; Xiu-yin ZHANG ; Dong-mei WANG ; Ru-hua FANG ; Kan XU
Author Information

1. Dept. of Prosthodontics, The Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China.
Publication Type:Journal Article
MeSH: Dental Stress Analysis; methods; Metal Ceramic Alloys; Surface Properties
From: West China Journal of Stomatology 2004;22(5):411-414
CountryChina
Language:Chinese
Abstract:
OBJECTIVETo evaluate the usage of moiré interferometre in porcelain-fused-metal interfacial fracture mechanics.
METHODSRaster was produced on the surface of samples with different thickness of porcelain and metal in 5 groups. The stripes of u field and v field under different load were collected. Then the rupture tenacity Jc was calculated and the extensions of flaws were observed.
RESULTSStress concentration appeared around the flaws under load conditions. The stripe became denser under more load. The rupture tenacity Jc and the direction of flaw extension of each group were different.
CONCLUSIONMoiré interferometre can be used in the study of porcelain-fused-metal interfacial fracture mechanics and to prognosticate the direction of flaw extension.