کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
294974 | 511508 | 2015 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Experiment and FEM study of one-way mixing of elastic waves with quadratic nonlinearity Experiment and FEM study of one-way mixing of elastic waves with quadratic nonlinearity](/preview/png/294974.png)
• The mixing waveforms change clearly as frequency deviation increases.
• The critical limit of frequency deviation for aluminum is obtained within ±7%±7%.
• Received amplitude of mixing wave increases with increasing mixing distance from experiments.
• A special angle of mixing wave from FEM decreases linearly with increasing mixing distance.
This paper investigates frequency deviation during imperfect resonant conditions through FEM simulations and experimental measurements using a one-way mixing technique. Waveforms of resonant waves are determined to change significantly from a diamond shape to certain toneburst trains as frequency deviation increases. The critical limit of frequency deviation for aluminum is obtained within ±7%. In the case of quasi-collinear mixing, scanning experimental results show that the received amplitude of the mixing wave increases with increasing mixing distance, and a special angle of the mixing wave in FEM simulations is found to explain this trend.
Journal: NDT & E International - Volume 72, June 2015, Pages 33–40