云纹干涉法应用于金瓷界面抗断裂能力研究的初步探讨  

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

作　　者：朱梓园[1] 张保卫[1] 张修银[1] 王冬梅[2] 方如华[2] 徐侃[1] 

机构地区：[1]上海第二医科大学附属第九人民医院口腔修复科,上海20001 [2]同济大学工程力学与技术系,上海200243

出　　处：《华西口腔医学杂志》2004年第5期411-414,共4页West China Journal of Stomatology

基　　金：国家自然科学基金资助项目(39870777)

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v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。Objective To evaluate the usage of moire inteiferometre 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 u field and v field under different load were collected. Then the rupture tenacity Jc was calculated and the extensions of flaws were observed. Results Stress 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. Conclusion Moire inter-ferometre can be used in the study of porcelain-fused-metal interfacial fracture mechanics and to prognosticate the direction of flaw extension.

关 键 词：云纹干涉法 界面断裂力学 烤瓷熔附金属 界面 

分 类 号：R783.1[医药卫生—口腔医学]