Crack detection diagnostics using ultrasonic insonification.

机译：使用超声波声波检测裂缝诊断。

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Sudden crack growth has the potential to cause catastrophic failure when a crack reaches a critical crack size. Early detection of crack formation minimizes this potential. This research focuses on the use of guided ultrasonic waves (GUWs) to detect crack formation. Experiments conducted on aluminum test specimens grew fatigue cracks through cyclic loading. Macro Fiber Composite (MFC) and piezoelectric disc transducers induced and received various GUWs ranging in frequency from 25 to 100 kHz. Features were extracted and correlated to crack length in the time domain, frequency domain and from autoregressive models of time series sensor data.

机译：当裂纹达到临界裂纹尺寸时，突然的裂纹扩展可能会导致灾难性的故障。尽早发现裂纹会最大程度地降低这种可能性。这项研究的重点是使用引导超声波（GUW）来检测裂纹的形成。在铝试样上进行的实验通过循环载荷使疲劳裂纹扩展。宏纤维复合材料（MFC）和压电盘式换能器感应并接收频率范围从25到100 kHz的各种GUW。提取特征并将其与时域，频域以及时间序列传感器数据的自回归模型中的裂纹长度相关联。

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作者
Jarmer, Gregory James Sylvester.;
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作者单位

University of California, San Diego.;

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授予单位 University of California, San Diego.;
学科 Engineering Mechanical.
学位 M.S.
年度 2009
页码 67 p.
总页数 67
原文格式 PDF
正文语种 eng
中图分类机械、仪表工业;
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入库时间 2022-08-17 11:38:26

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1. Comparative studies on phased array ultrasonic, alternating current potential drop and conventional ultrasonic techniques for detection, monitoring and sizing of circumferential fatigue crack growth in pipes [J] . L. Satyarnarayan, DM. Pukazhendhi, A. Kannan Journal of Structural Engineering . 2007,第2期

机译：相控阵超声，交流电势降和常规超声技术对管道周向疲劳裂纹扩展的检测，监测和定尺寸的比较研究
2. Fatigue crack detection by the use of ultrasonic echo height change with crack tip opening [J] . Hiromi Shirahata, Chitoshi Miki, Ryota Yamaguchi, Welding in the World: Journal of the International Institute of Welding: Journal of the International Institute of Welding . 2014,第5期

机译：通过使用超声回波高度变化和裂纹尖端开口来检测疲劳裂纹
3. Evaluation of the matrix crack number in carbon fiber reinforced plastics using linear and nonlinear acousto-ultrasonic detections [J] . Wang Rong, Wu Qi, Xiong Ke, Composite Structures . 2021,第Pta1期

机译：使用线性和非线性声学 - 超声检测评价碳纤维增强塑料中的基质裂缝数
4. Crack detection diagnostics using ultrasonic insonification and pattern recognition [C] . Gregory J.S. Jarmer, Michael D. Todd Conference on health monitoring of structural and biological systems . 2009

机译：使用超声声波识别和模式识别进行裂纹检测诊断
5. Stress diagnostics and crack detection in full-size silicon wafers using resonance ultrasonic vibrations. [D] . Byelyayev, Anton. 2005

机译：使用共振超声振动对全尺寸硅晶片进行应力诊断和裂纹检测。
6. Detection of Crack Initiation and Growth Using Fiber Bragg Grating Sensors Embedded into Metal Structures through Ultrasonic Additive Manufacturing [O] . Sean K. Chilelli, John J. Schomer, Marcelo J. Dapino 2019

机译：使用通过超声增材制造法嵌入金属结构中的光纤布拉格光栅传感器检测裂纹萌生和扩展
7. Label-Free Biodetection Using Capacitive Micromachined Ultrasonic Transducers (CMUTs) and Its Application for Cardiovascular Disease Diagnostics [O] . Sarayoot Eaimkhong 2012

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Crack detection diagnostics using ultrasonic insonification.

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