The sources of heat generation in vibrothermography

Date
2011-12-01
Authors
Renshaw, Jeremy
Chen, John
Holland, Stephen
Thompson, R.
Journal Title
Journal ISSN
Volume Title
Publisher
Altmetrics
Research Projects
Organizational Units
Journal Issue
Series
Abstract

Vibrothermography, or sonic IR, is a nondestructive evaluation technique used to find surface and near surface defects—such as cracks and delaminations—through observations of vibration-induced heat generation. This method has significant interest as an industrial inspection method, however, a lack of understanding of the fundamental physics governing the heat generation process has limited its application despite extensive theoretical, numerical simulation, and experimental work. Significant theoretical and numerical simulation work has been performed, but has yet to be rigorously verified experimentally. This paper presents experimental verification of the sources of heat generation in vibrothermography; specifically friction, plasticity, and viscoelasticity. Specific experimental evidence is presented that verifies each of these heat-generating mechanisms.

Description

This is a post-print of an article from NDT&E International 44, no. 8 (December 2011): 736–739, doi:10.1016/j.ndteint.2011.07.012.

Keywords
Vibrothermography, Source, Heat Generation, Sonic IR, Friction, Plasticity
Citation
DOI
Collections