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首页> 外文期刊>Journal of the Chinese Society of Mechanical Engineers, Series C: Transactions of the Chinese Society of Mechanical Engineers >A Study of Reliability Analysis of Fatigue Life for Dental Implants
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A Study of Reliability Analysis of Fatigue Life for Dental Implants

机译：种植牙疲劳寿命的可靠性分析研究

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摘要

Dental implants (DIs) were extensively utilized on edentulous patients for recovering the chewing functions. The fatigue life of DIs was definitely specified to ensure the expected lifespan as well as the quality. This paper proposed the methods of reliability life estimation for DIs. The life estimation models are developed including constant amplitude and random loadings. The geometry models of the DIs were constructed for performing stress analysis by finite element methods. The tested steps and the specifications of DIs were reported for fulfilling dynamic testing and collecting the experimental data. The life estimation models are formulated in cooperation with linear regression methods. Four types of probabilistic distributions are used to calculate the probabilistic lives of DIs based on the characteristic parameters of the life distributions. The evaluated errors are compared to formulate the trend lines of the characteristic parameters changing. The studied results show that the direct linear estimation is an efficient approach to predict the fatigue lives as well as the lognormal function is more suitable for the probabilistic lives, especially at the low cyclic loadings.
机译：牙种植体（DIs）被广泛用于无牙患者，以恢复其咀嚼功能。明确规定了DI的疲劳寿命，以确保预期寿命和质量。本文提出了直接投资的可靠性寿命估算方法。开发了寿命估算模型，包括恒定振幅和随机载荷。构建了DI的几何模型，以通过有限元方法进行应力分析。报告了DI的测试步骤和规格，以完成动态测试并收集实验数据。寿命估计模型是与线性回归方法共同制定的。基于寿命分布的特征参数，使用四种类型的概率分布来计算DI的概率寿命。比较评估的误差以制定特征参数变化的趋势线。研究结果表明，直接线性估计是一种预测疲劳寿命的有效方法，对数正态函数更适合于概率寿命，尤其是在低循环载荷下。

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