Non-collinear wave mixing for non-linear ultrasonic detection of physical ageing in PVC

This work considers the characterization of linear PVC acoustic properties using a linear ultrasonic measurement technique and the non-collinear ultrasonic wave mixing technique for measurement of the physical ageing state in PVC. The immersion pulse-echo measurements were used to evaluate phase vel...

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Bibliographic Details
Published in:NDT & E international : independent nondestructive testing and evaluation 2012-07, Vol.49, p.34-39
Main Authors: Demčenko, A., Akkerman, R., Nagy, P.B., Loendersloot, R.
Format: Article
Language:English
Subjects:
Acoustical measurements and instrumentation
Acoustics
Aging
Applied sciences
Attenuation
Cross-disciplinary physics: materials science
rheology
Dispersions
Estimates
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Linear acoustics
Materials science
Materials testing
Non-linear ultrasonics
Nondestructive testing
Phase velocity
Physical ageing
Physics
Polymer industry, paints, wood
Polyvinyl chlorides
Properties and testing
PVC
Technology of polymers
Testing and control
Ultrasonic testing
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Summary:This work considers the characterization of linear PVC acoustic properties using a linear ultrasonic measurement technique and the non-collinear ultrasonic wave mixing technique for measurement of the physical ageing state in PVC. The immersion pulse-echo measurements were used to evaluate phase velocity dispersion and attenuation of longitudinal waves in PVC test specimens. The suggested non-collinear ultrasonic wave mixing technique measurement technique was verified on measurements of laboratory and field PVC test specimens. The measurement results confirm that the ultrasonic wave mixing technique is suitable to estimate the physical ageing state of PVC.
ISSN:0963-8695
1879-1174
DOI:10.1016/j.ndteint.2012.03.005