声发射法监测HSLA钢弹塑性断裂行为

IF 0.5 4区材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Evaluation Pub Date : 2021-04-01 DOI:10.32548/2021.ME-04137

J. Kumar, C. Mukhopadhyay, V. Kumar

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引用次数: 1

摘要

本研究探索使用声发射测试（AE）来监测高强度低合金（HSLA）钢在两个不同方向上的弹塑性断裂韧性（JIC）。试验过程中产生的声发射信号在初始加载时的整体屈服过程中较高，之后在中间加载过程中降低，然后再次增加。产生的声发射信号用于与卸载顺应性试验确定的JIC值相关。AE估算的裂纹萌生点低于卸载顺应性试验确定的裂纹萌生。在AE确定的裂纹萌生点之外，产生的声发射信号迅速增加，这归因于裂纹的扩展。声发射信号的峰值振幅支持了裂纹萌生过程中的声发射结果。还探讨了利用声发射数据估算HSLA钢断裂韧性值的可能性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Monitoring of Elastoplastic Fracture Behavior of HSLA Steel Using Acoustic Emission Testing

The present study explores using acoustic emission testing (AE) to monitor the elastoplastic fracture toughness (JIC) of high-strength, low-alloy (HSLA) steel in two different orientations. Acoustic emission signals generated during the tests were found to be higher during bulk yielding upon initial loading, after which they decreased during intermediate loading before increasing again. The acoustic emission signals generated were used to correlate with the JIC values determined from unloading compliance tests. The point of crack initiation estimated by AE is lower than that determined by the unloading compliance tests. Beyond the point of crack initiation determined by AE, the acoustic emission signals generated increased rapidly, which is attributed to crack growth. The results of AE during crack initiation are supported by the peak amplitude of the acoustic emission signals. The possibility of using AE data to estimate fracture toughness values has also been explored for HSLA steel.

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来源期刊

Materials Evaluation 工程技术-材料科学：表征与测试

CiteScore

0.90

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Materials Evaluation publishes articles, news and features intended to increase the NDT practitioner’s knowledge of the science and technology involved in the field, bringing informative articles to the NDT public while highlighting the ongoing efforts of ASNT to fulfill its mission. M.E. is a peer-reviewed journal, relying on technicians and researchers to help grow and educate its members by providing relevant, cutting-edge and exclusive content containing technical details and discussions. The only periodical of its kind, M.E. is circulated to members and nonmember paid subscribers. The magazine is truly international in scope, with readers in over 90 nations. The journal’s history and archive reaches back to the earliest formative days of the Society.