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Extraction of bulk wave characteristics from a pulsed ultrasonic polar scan
- Publication Year :
- 2014
- Publisher :
- Elsevier, 2014.
-
Abstract
- The pulsed ultrasonic polar scan (P-UPS) technique provides a map with characteristic contours reflecting the critical bulk wave angles, which directly relate to the in-plane elastic properties of the insonified material spot. Besides these contours, additional information is captured in a P-UPS experiment which has particular importance for the inspection of anisotropic materials. By extensive post-processing on a single P-UPS experiment, we successfully extracted the local directional (i) critical bulk wave angles, (ii) phase velocity profiles, (iii) slowness curves, (iv) walk-off angles and (v) energy velocity profiles, for the three different polarization states of bulk waves. The procedure is demonstrated and discussed for an isotropic aluminum sample as well as an autoclave manufactured orthotropic [o](8) carbon/epoxy laminate. In addition, a numerical and experimental investigation of the role of the immersion liquid as a lens for the P-UPS result is performed. This lensing effect permits to zoom in/out on the P-UPS fingerprint, hence broadening the class of materials which can be inspected by the P-UPS technique. (C) 2014 Elsevier B.V. All rights reserved.
- Subjects :
- Materials science
business.industry
Applied Mathematics
Isotropy
General Physics and Astronomy
Polarization (waves)
Orthotropic material
Computational Mathematics
pulsed ultrasonic polar scan
Optics
Lensing
Modeling and Simulation
Immersion liquid
Polar
Anisotropy
Ultrasonic sensor
bulk waves
Phase velocity
Slowness
business
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....459f6660f3810d8f7b3bc40469493ebb