Development of Real Time Stress Measurement System by Infrared Thermal Video System

红外热视频系统实时应力测量系统的研制

• 批准号: 61850019
• 负责人: SHIRATORI Masaki
• 金额: $ 6.21万
• 依托单位: Yokohama National University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-61850019/
• 关键词: Infrared Thermal Video System; Stress Analysis; Stress Intensity Factor; J-integral; き裂の検知; 非破壊検査; 応力測定; 亀裂; 亀裂の検知; 高周波加熱法

The authors have developed new techniques for the stress analysis and the monitoring of a crack with the aid of an infrared thermal video system. The summary of results are as follows :(1) The method of a real time stress analysis has been developed(2) It is shown that the stress intensity factors at the crack tip can be measured by this method.(3) The method of estimating J-integral has been developed. It can be obtained by measuring the temperature distribution in the plastic zone at the crack tip.(4) The methods of monitoring crack-like-defects have been developed. Three different methods for heating the speciment have been examined. These are (1) self-heating method. (2) high frequency current method, and (3) laser heating method. They are compared each other and applications to the practical problems have been discussed.

作者在红外热像仪的帮助下，发展了裂纹应力分析和监测的新技术。结果表明：(1)提出了一种实时应力分析方法；(2)用该方法可以测量裂纹尖端的应力强度因子；(3)提出了估算J积分的方法。通过测量裂纹尖端塑性区的温度分布，可以得到裂纹尖端的温度分布。(4)建立了裂纹类缺陷的监测方法。研究了三种不同的加热样品的方法。它们是：(1)自热法。(2)高频电流法；(3)激光加热法。对它们进行了比较，并讨论了它们在实际问题中的应用。

项目成果

白鳥正樹,: 日本機械学会論文集.

Masaki Shiratori，：日本机械工程师学会会议录。

M. Shiratori,: "Measurement of J-Integral by Thermal Video System" Trans. of JSME, Ser.A.

M. Shiratori，：“通过热视频系统测量 J-Integral” Trans。

M. Shiratori,: "Measurement of Stress Intensity Factor, K, and J-Integral for Cracked Members by a Scanning Infrared Camera" Trans. of JSME, Ser. A. 53-492. 1699-1705 (1987)

M. Shiratori，：“通过扫描红外相机测量裂纹构件的应力强度因子、K 和 J 积分” Trans。

M. Shiratori,: "Monitoring of Cracks by Thermal Video System" Trans. of JSME, Ser. A.

M. Shiratori，：“通过热视频系统监测裂缝” Trans。

白鳥正樹,: 日本機械学会論文集. 53-492. 1699-1705 (1987)

Masaki Shiratori：日本机械工程师学会会议记录 53-492 1699-1705 (1987)。