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ANALYTICAL MODEL FOR PREDICTION OF RESIDUAL STRESS IN ZIRCONIA-PORCELAIN BI-LAYER

机译:氧化锆-陶瓷双层中残余应力的解析模型

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摘要

In the case of ceramics, bi-layer residual stresses may be sufficiently large to influence the failure of a part; so, they should not be neglected in design analysis. In the case of a dental crown it is possible to analytically model the expected residual stress between the core and veneer layer, and provide a range to validate experimental results. The aim of this analytical model is to simulate the layers of a crown with clinically relevant veneer thickness including the residual stress between the core and veneer layer. For a bi-layer of 0.5 mm thickness, yttria stabilized tetragonal zirconia veneered by 0.5 mm thick porcelain gives a predicted residual stress (σ_x) of -60 MPa, 100 MPa, -40 MPa, and 10 MPa for the bottom of the zirconia layer, the zirconia at the interface, the porcelain at the interface, and the top surface of the porcelain respectively.
机译:在陶瓷的情况下,双层残余应力可能足够大,以影响零件的失效。因此,在设计分析中不应忽略它们。对于牙冠,可以对芯层和饰面层之间的预期残余应力进行分析建模,并提供一个范围来验证实验结果。该分析模型的目的是模拟具有临床相关贴面厚度的牙冠层,其中包括芯和贴面层之间的残余应力。对于厚度为0.5 mm的双层,氧化钇稳定的四角形氧化锆表面贴有0.5 mm厚的瓷,可以得出氧化锆层底部的预计残余应力(σ_x)分别为-60 MPa,100 MPa,-40 MPa和10 MPa。 ,界面处的氧化锆,界面处的瓷器和瓷器的上表面。

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  • 来源
  • 会议地点 Daytona Beach FL(US);Daytona Beach FL(US)
  • 作者单位

    Mechanical and Aerospace Engineering, Oklahoma State University Tulsa, OK, USA;

    rnMechanical and Aerospace Engineering, Oklahoma State University Tulsa, OK, USA;

    rnMechanical and Aerospace Engineering, Oklahoma State University Tulsa, OK, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 生物材料学;
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