کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
295880 | 511584 | 2008 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Factors affecting the ultrasonic intermodulation crack detection technique using bispectral analysis
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
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چکیده انگلیسی
This paper concerns the development of ultrasonic intermodulation as a method of robustly detecting cracks in engineering components. The bispectrum signal processing technique is used to analyse the nonlinear response of a sample to continuous excitation at two frequencies. The increased nonlinearity due to defects such as fatigue cracks is detected. The technique is shown to be insensitive to the support conditions and excitation positions. The importance of the shape of the excited modes is demonstrated and suggests that global inspection can be achieved only by exciting multiple modes. This multimode approach is then applied to the detection of cracking of a steel steering actuator bracket.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NDT & E International - Volume 41, Issue 3, April 2008, Pages 223–234
Journal: NDT & E International - Volume 41, Issue 3, April 2008, Pages 223–234
نویسندگان
Charles R.P. Courtney, Bruce W. Drinkwater, Simon A. Neild, Paul D. Wilcox,