کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
295182 | 511530 | 2013 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fatigue crack monitoring in engine-grade titanium alloy by dynamic subtraction of surface acoustic wavemodulation
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Fatigue crack monitoring in engine-grade titanium alloy by dynamic subtraction of surface acoustic wavemodulation Fatigue crack monitoring in engine-grade titanium alloy by dynamic subtraction of surface acoustic wavemodulation](/preview/png/295182.png)
چکیده انگلیسی
The initiation and evolution of fatigue cracks in forged titanium alloy samples are monitored ultrasonically during fatigue testing. An in-situ surface wave acoustic method is applied during fatigue with an overlaid small low-frequency periodic loading, resulting in a nonlinear modulation of reflected ultrasonic pulses. The acoustic wave time traces in the sample are collected for a range of applied fatigue and modulation load levels and for a range of spatial propagation positions within each fatigue cycle. These samples are characterised by strong microstructure-induced ultrasonic scattering. To improve the signal-to-noise ratio a post-processing subtraction technique is introduced with the aim of enhancing initiated crack detectability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NDT & E International - Volume 55, April 2013, Pages 47–56
Journal: NDT & E International - Volume 55, April 2013, Pages 47–56
نویسندگان
G.D. Connolly, J. Li, S.I. Rokhlin,