RESEARCH ON APPLICATION OF LINEAR NOTCH MECHANICS TO STRENGTH OF NOTCHED ADVANCED MATERIALS

线性缺口力学在缺口先进材料强度中的应用研究

• 批准号: 04302026
• 负责人: NISITANI Hironobu
• 金额: $ 13.12万
• 依托单位: KYUSYU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04302026/
• 关键词: Linear Notch Mechanics; Notch; Fatigue; Fine Ceramics; Composites; Residual Stress; 応力集中; 先進材料; 応力場

This project was divided to the following four parts, and the following result was obtained in the each part.(I)Extension of Linear Notch Mechanics to Large Scale Yielding ProblemThe application limit of Linear Notch Mechanics was discussed quantitively, and It was extented to Non-linear Notch Mechanics which is available even in case of large scale yielding.(II)Application of Linear Notch Mechanics to New MetalsLinear Notch Mechanics was applied to the evalution for the notch strength of new metals for example Ti-alloy, HIP, ceramics coating and so on. As results, it found that Linear Notch Mechanics is valid, and the results were used for data-base in an expert systems.(III)Application of Linear Notch Mechanics to New MaterialsLiniear Notch Mechanics was applied to the evalution for the notch strength of new materials, for example fiber-reinforced-plastics, fine ceramics and so on. As results, it found that Linear Notch Mechanics is valid, and the results were used for data-base in an expert systems.(IV)Relation between Lenear Notch Mechanics and residual stressA method for evaluation of residual stress was developed, and the relation between Linear Notch Mechanics and residual stress was discussed.

本课题分为以下四个部分，每个部分取得了以下成果。（I）线性切口力学在大范围屈服问题中的推广定量地讨论了线性切口力学的应用极限，并将其推广到即使在大范围屈服情况下也适用的非线性切口力学。（二）线性缺口力学在新金属中的应用本文应用线性缺口力学对钛合金、热等静压、陶瓷涂层等新金属的缺口强度进行了评价，结果表明线性缺口力学是有效的，并将其结果作为专家系统的数据库。（三）线性缺口力学在新材料中的应用本文将线性缺口力学应用于纤维增强塑料、精细陶瓷等新材料的缺口强度评价，结果表明线性缺口力学是有效的，并将其结果作为专家系统的数据库。（四）线性缺口力学与残余应力的关系建立了残余应力的评价方法，讨论了线性缺口力学与残余应力的关系。

项目成果

Hiizu Hyakutake: "Fatigue failure criterion for notched FRP Plates" JSME Inter.Journal Ser.A. Vol.36, No.2. 215-219 (1993)

Hiizu Hyakutake：“缺口 FRP 板的疲劳失效准则”JSME Inter.Journal Ser.A。

麻生,百武,山本: "FRP切欠平板の疲労損傷(繊維方法効果)" 第22回FRPシンポジウム(平成5年3月16日).

Aso、Hyakutake、Yamamoto：“FRP 缺口平板的疲劳损伤（纤维法效应）”第 22 届 FRP 研讨会（1993 年 3 月 16 日）。

Satoshi Tanaka: "Effect of heat treatment on initiation and propagation process of microcracks in Ti-alloy" Proc.Asian Pacific Conf.on Fracture and Strength'93. 287-292 (1993)

Satoshi Tanaka：“热处理对钛合金微裂纹萌生和扩展过程的影响”Proc.Asian Pacific Conf.on Fracture and Strength93。

Hironobu Nisitani: "Linear notch mechanics and its application to evaluation of fatigue strength of notched specimen" Proc.Strength of Ductile Cast Iron and Other Cast Metals. 11-17 (1993)

Hironobu Nisitani：“线性缺口力学及其在缺口试样疲劳强度评估中的应用”Proc.Strength of Ductile Cast Iron and Other Cast Metals。

Riichi Murakami: "Improvement of fatigue properties of steel by ion beam technology" Proc.Process.Properties and Applications of Metallic and Ceramic Materials. 1. 461-466 (1992)

Riichi Murakami：“通过离子束技术改善钢的疲劳性能”Proc.Process.Properties and Applications of Metallic and Ceramic Materials。