基于非线性超声的疲劳裂纹检测中二次谐波的激发效率

基金项目:

国家自然科学基金资助项目(50475053)

详细信息

The Deduction of Second Harmonic Generation Efficiency in Fatigue Crack Testing Using Nonlinear Ultrasonic

摘要: 提出在疲劳裂纹的非线性超声检测中, 将二次谐波激发效率作为定量表征疲劳裂纹缺陷的特征参数, 并对其理论公式进行了详尽的推导, 证明了将二次谐波激发效率作为特征参数对疲劳裂纹缺陷进行定量化是有效的。
- 二次谐波 /
- 激发效率 /
- 非线性超声 /
- 疲劳裂纹
Abstract: To find effective parameter for quantifying fatigue crack defects, second harmonic motivating efficiency was used in this paper as the feature parameter of quantitatively identifying fatigue micro-crack defect of metal component, and the deduction of theory formula was obtained. Moreover, its correction was proved.
- Second harmonic /
- Generation efficiency /
- Nonlinear ultrasonic wave /
- Fatigue crack

[1]	Jin-Yeon Kim, Arturo Baltazar, Jong Wan Hu. Hysteretic linear and nonlinear acoustic responses from pressed interfaces[J]. International Journal of Solids and Structure, 2006: 1-17.
[2]	Richardson J M. Harmonic generation at an unbonded interface I. planar interface between semi-infinite elastic media[J]. Int J Eng Sci, 1979(17): 73-85.
[3]	Donskoy D, Sutin A, Ekimov A. Nonlinear acoustic interaction on contact interfaces and its use for nondeStructive testing[J]. NDT&E Int, 2001(34): 231-238.
[4]	Gusev V, Castagnede B, Moussatov A. Hysteresis in response of nonlinear bistable interface to continuously varying acoustic loading[J]. Ultrasonic, 2003(41): 643-654.