https://doi.org/10.1051/epjap/2016150409
Regular Article
Local detection of defects in materials by thermal analysis – flash method*
1
Mohammed V University of Rabat, EST-LASTIMI, Sale, B.P. 227, Sale-Medina, Morocco
2
Mohammed V University of Rabat, Faculty of Sciences, UFR in ATI, B.P. 1014, Rabat, Morocco
3
Mohammed V University of Rabat, EST-LEME, Sale, B.P. 227, Sale-Medina, Morocco
a e-mail: akabouri@hotmail.com
Received:
4
August
2015
Revised:
12
January
2016
Accepted:
4
April
2016
Published online:
27
May
2016
This is mainly an experimental contribution about defect detection based on the flash method generally used to characterize the thermal diffusivity of the material. The temperature rise on the rear face of the sample generated by the flash provides important information. We have conceived and realized a contact thermal sensor consisting of forty-nine type K thermocouples distributed over the rear face of the sample to be tested. The thermocouples responses, as measured by several thermograms, are given in several measuring points distributed over the entire bottom surface of the sample. Analysis of the experimental results shows that the temperature rise provide important information to establish a thermal system for defect detection in homogeneous materials containing heterogeneities.
© EDP Sciences, 2016
