华西口腔医学杂志

• 专栏论著 • 上一篇    下一篇

云纹干涉法应用于金瓷界面抗断裂能力研究的初步探讨

朱梓园1,张保卫1,张修银1,王冬梅2,方如华2,徐侃1   

  1. 1.上海第二医科大学附属第九人民医院口腔修复科,上海200011;2.同济大学I程力学与技术系,上海200243
  • 收稿日期:2004-10-25 修回日期:2004-10-25 出版日期:2004-10-20 发布日期:2004-10-20
  • 通讯作者: 张保卫,Tel:021-63138341-5207
  • 作者简介:朱梓园(1975一),女,上海人,主治医师,硕士
  • 基金资助:
    国家自然科学基金资助项目((39870777)

Using Moh6 Interferometre in the Study of Porcelain-Fused-Metal Interfacial Fracture Mechanics

ZHU Zi yuan1, ZHANG Bao-wei1,ZHANG Xuo-yin1,WANG Dongrnei2,FANG Rio- hna2,XU Kan1   

  1. 1.Dept .of Prosthodontics。The Ninth People's Hospital, Shanghai Second Medical Unitersity, Shanghai 200011,China;2. Dept.of Engineering MechaniGS and TeCh- nuItte,Tongji Univers妙Shanghai 200243, China
  • Received:2004-10-25 Revised:2004-10-25 Online:2004-10-20 Published:2004-10-20

摘要:

目的探讨云纹干涉法在金瓷界面抗断裂能力研究中的应用。方法在5组金瓷厚度不同的试件表面制作光栅,加载后采集u场及。场云纹干涉条纹,推算各组金瓷界面断裂韧性Jc值并观测裂纹扩展方向。结果加载条件下,裂纹周围显示应力集中区,条纹随载荷增加逐渐变密。由云纹干涉图位移场算得各组试件金瓷界面断裂韧性各不相同,其裂纹扩展方向也有差异。结论云纹干涉法适用于金瓷界面断裂韧性的研究,也可用于观测并预测裂纹的扩展方向及趋势。

关键词: 云纹干涉法, 界面断裂力学, 烤瓷熔附金属, 界面

Abstract:

Objective To evaluate the usage of moir>s interferometre in porcelain-fused-metal interfacial fracture mechanics. Methods Raster was produced on the surface of samples with different thickness of porcelain and metal in 5 groups. The stripes of“field and,field under different load were collected. Then the rupture tenacity Jc~calculated and the extensions of flaws were observed. Results Stress concentration appeared around the flaws under load conditions. The stripe became denser under ~load. The rupture tenacity Jc and the direction of flaw extension of each group were different. Conclusion Moir6 inter- ferometre can be used in the study of porcelain-fused-metal interfacial fracture mechanics and to prognosticate the direction of flaw extension.