Development of Strength Confirmation Testing Method of Ceramics by Reliability Engineering

可靠性工程陶瓷强度确认测试方法的开发

• 批准号: 04555028
• 负责人: ICHIKAWA Masahiro
• 金额: $ 5.82万
• 依托单位: The University of Electro-Communications
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555028/
• 关键词: Ceramics; Ceramics Bearing; Silicon Nitride; Strength Confirmation Test; Reliability Engineering; セラミック軸受; 窒化珪素

The aim of this research is to develop the method of strength confirmation testing of ceramics by the reliability engineering. The principal results of the research are summarized as follows.1.The mean reliability was applied to the determination of design-allowable stress S_a for the case where the material strength follows a two-parameter Weibull distribution. It was found that for the case when the shape parameter alpha is known and only the scale parameter beta is unknown, the design-allowable stress S_a was obtained analytically and for the case when both alpha and beta are unknown, S_a was obtained numerically.2.The mean reliability was applied to the estimation of the size of reliability for the case when a design-allowable stress is determined by reliability R and confidence level C.It was found that for the case when the strength follows a normal distribution and Weibull distribution, the mean reliability was obtained analytically or numerically and for the case when the distr … More ibution of strength is unknown, the lower limit of the mean reliability was obtained by the product reliability R by confidence level C regardless of the distribution of strength.3.The ring crack initiation load was studied for a ceramic ball from a statistical point of view experimentally. The ring crack initiation load P_R was much larger than the static load rating given by the ISO method for steel bearings. The former is about ten times of the latter.4.Which of the inter-ball variability and the intra-ball variability is responsible for the scatter of the ring crack initiation load P_R of ceramic bearing balls was studied experimentally. It was found that scatter of P_R evaluated by measuring P_R at per single position per ball is mainly due to intra-ball variability or spatial variation of P_R within one ball.5.The mechanism of crushing fracture of ceramic bearing balls was studied experimentally. It wa found that a radial crack led to final fracture.6.The rolling fatigue of ceramic bearing balls was studied experimentally. It was found that the rolling fatigue life followed approximately a two-parameter Weibull distribution. Less

本研究的目的是发展可靠性工程的陶瓷材料强度确认试验方法。主要研究结果如下：1.将平均可靠度应用于材料强度服从两参数威布尔分布时的设计许用应力S_a的确定。结果表明，当形状参数α已知，只有尺度参数β未知时，设计许用应力S_a可以用解析法求得;当α和β都未知时，2.将平均可靠度应用于可靠度大小的估计，当设计参数为许用应力由可靠度R和置信水平C确定。发现当强度服从正态分布和威布尔分布时，平均可靠度可用解析法或数值法求出，而当应力分布服从正态分布和威布尔分布时，平均可靠度可用数值法求出。 ...更多信息 在强度分布未知的情况下，不考虑强度分布，由产品可靠度R和置信水平C得到平均可靠度的下限。3.从统计学的角度对陶瓷球的环形裂纹萌生载荷进行了实验研究。环形裂纹萌生载荷PR远大于ISO方法给出的钢支座静载荷额定值。4.对陶瓷轴承球环裂纹萌生载荷P_R的分散性是球内变异性还是球间变异性造成的进行了实验研究。研究发现，通过测量每个球上单个位置的P_R来评价P_R的分散性，主要是由于球内P_R的变异性或一个球内P_R的空间变异性。5.对陶瓷轴承球的破碎断裂机理进行了实验研究。研究了陶瓷轴承球的滚动疲劳性能。结果表明，滚动疲劳寿命近似服从双参数威布尔分布。少

项目成果

Masahiro Ichikawa: "Intra-Ball and Inter-Ball Variability of Ring Crack Initiation Load of Silicon Nitride Bearing Balls" JSME International Joural, Series A. 38(掲載決定). 231-235 (1995)

Masahiro Ichikawa：“氮化硅轴承球环裂纹初始载荷的球内和球间变化”JSME 国际期刊，A.38 系列（已决定出版）。

市川昌弘: "信頼性設計における信頼度と信頼水準の統合の試み" 日本機械学会第3回設計工学・システム部門講演会講演論文集. NO.930-27. 150-154 (1993)

Masahiro Ichikawa：“尝试将可靠性和置信度集成到可靠性设计中”日本机械工程师学会第三届设计工程和系统分会会议记录 NO.930-154 (1993)。

裴 星仁: "信頼性設計における信頼度と信頼水準の統合の試み(強度が2母数ワイブル分布に従う場合)" 日本機械学会論文集(A編). 59. 478-482 (1993)

Hoshihito Bai：“尝试在可靠性设计中整合可靠性和置信度（当强度遵循两参数威布尔分布时）”日本机械工程师学会汇刊（ed.A）59. 478-482（1993）。

Masahiro Ichikawa, Tohru Takamatsu, Takashi Matsuo, Nagatoshi Okabe, Yutaka Abe: "Rolling Fatigue Properties of Silicon Nitride Bearing Balls" Journal of The Society of Materials Science, Japan. Vol.42, No.483. 1406-1411 (1993)

Masahiro Ichikawa、Tohru Takamatsu、Takashi Matsuo、Nagatoshi Okabe、Yutaka Abe：“氮化硅轴承球的滚动疲劳特性”日本材料科学学会杂志。

市川昌弘: "窒化硅素軸受球の転がり疲労特性" 材料(日本材料学会誌). 42. 1406-1411 (1993)

Masahiro Ichikawa：“氮化硅轴承滚珠的滚动疲劳特性”材料（日本材料学会杂志）42. 1406-1411（1993）。