结合非线性声学调制和科达波干涉测量法检测金属材料的局部冲击疲劳损伤

IF 2.6 3区 材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING
Yuqi Ma, Jianbo Wu, Yanjie He, Zhaoyuan Xu, Suixian Yang
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引用次数: 0

摘要

航空航天和核工业中的一些金属结构在反复承受冲击载荷的情况下,会积累微裂纹直至断裂,即冲击疲劳损伤,这将损害金属结构的整体强度和疲劳寿命。冲击疲劳损伤在金属材料上产生的微裂纹非常细小,目前只有一些微观表征方法可用于评估其损伤程度,如扫描电子显微镜(SEM)、电子反向散射衍射(EBSD)、能量 X 射线色散光谱(EDS)和 X 射线光电子能谱(XPS)。目前还缺乏更方便有效的无损检测方法。本文采用非线性声学调制和尾波干涉测量相结合的方法来检测 40Cr 钢试样的冲击疲劳损伤。模拟讨论了非线性尾弦波干涉测量法(NCWI)中由冲击疲劳损伤引起的局部弹性模量降低的可观测性。最后,在六个不同冲击时间的 40Cr 钢试样上进行了 NCWI 实验。结果表明,所提出的方法可以有效地检测和量化金属冲击疲劳损伤。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The Detection of Local Impact Fatigue Damage on Metal Materials by Combining Nonlinear Acoustic Modulation and Coda Wave Interferometry

The Detection of Local Impact Fatigue Damage on Metal Materials by Combining Nonlinear Acoustic Modulation and Coda Wave Interferometry

The Detection of Local Impact Fatigue Damage on Metal Materials by Combining Nonlinear Acoustic Modulation and Coda Wave Interferometry

Some metal structures in the aerospace and nuclear industries are subjected to repeated impact loads that accumulate microcracks until fracture, called impact fatigue damage, which will compromise the metal structure’s overall strength and fatigue life. The microcracks generated by impact fatigue damage on metal materials are so small that, at present, only some microscopic characterization methods have been used to evaluate its damage level, such as scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), energy X-ray dispersive spectroscopy (EDS), and X-ray Photoelectron Spectroscopy (XPS). There is a lack of more convenient and effective non-destructive testing methods. In this paper, the combination of nonlinear acoustic modulation and coda wave interferometry is used to detect impact fatigue damage on 40Cr steel specimens. The simulation discusses the observability of local elastic modulus reduction caused by impact fatigue damage in nonlinear coda wave interferometry (NCWI). Finally, NCWI experiments were carried out on six 40Cr steel specimens with different impact times. Results show that the proposed method can effectively detect and quantify the metal impact fatigue damage.

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来源期刊
Journal of Nondestructive Evaluation
Journal of Nondestructive Evaluation 工程技术-材料科学:表征与测试
CiteScore
4.90
自引率
7.10%
发文量
67
审稿时长
9 months
期刊介绍: Journal of Nondestructive Evaluation provides a forum for the broad range of scientific and engineering activities involved in developing a quantitative nondestructive evaluation (NDE) capability. This interdisciplinary journal publishes papers on the development of new equipment, analyses, and approaches to nondestructive measurements.
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