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Quantitative evaluation of micro-cracks using nonlinear ultrasonic modulation method
- Source :
- NDT & E International. 79:63-72
- Publication Year :
- 2016
- Publisher :
- Elsevier BV, 2016.
-
Abstract
- Nonlinear acoustic coefficients have a close relationship with structural cracks. A nonlinear ultrasonic modulation method for micro-crack quantitative evaluation is developed. The influence of phase threshold on the crack evaluation is discussed. Ultrasonic modulation using a unilateral incentive model is applied to the quantitative evaluation of micro-cracks for different specimens. The experimental results indicate that the method can be beneficially applied for micro-cracks detection. A proper phase threshold can improve the reliability of the method based on nonlinear ultrasonic modulation. The presented modulation factor can be used to quantitatively evaluate the structural cracks, and it is suitable for small-crack quantitative evaluation.
- Subjects :
- Engineering
business.industry
Mechanical Engineering
Acoustics
Micro cracks
Phase (waves)
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Modulation factor
Nonlinear system
Modulation
Nondestructive testing
mental disorders
0103 physical sciences
General Materials Science
Ultrasonic sensor
0210 nano-technology
business
010301 acoustics
Reliability (statistics)
Subjects
Details
- ISSN :
- 09638695
- Volume :
- 79
- Database :
- OpenAIRE
- Journal :
- NDT & E International
- Accession number :
- edsair.doi...........0f590afa9f589ecb310c90bb1c7c05e3