Application of square optical heating pulse model in measuring thermal diffusivity of SiC/B4C composites by using photoflash technique

Haydari, Mehdi and Moksin, Mohd Maarof and Mat Yunus, W. Mahmood and Grozescu, Ionel Valeriu and Abdul Wahab, Zaidan and Zakaria, Azmi (2008) Application of square optical heating pulse model in measuring thermal diffusivity of SiC/B4C composites by using photoflash technique. Nondestructive Testing and Evaluation, 23 (3). pp. 163-173. ISSN 1058-9759 print/1477-2671 online

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Official URL: http://dx.doi.org/10.1080/10589750701879825

Abstract

This paper examines the application of a square pulse approximation to the camera flash temporal profile as a heating source in the photoflash technique. The technique was used in measuring SiC/B4C composites whereby thin-film polyvinylidene difluoride film was the detector. The analytical model derived for the square pulsed heating source was tested against the data obtained from SiC/B4C composites of different B4C composition. The suitability of the model is also compared with the model for Dirac-d function approximation to the camera flash. The square pulse model was found to fit reasonably well to the experimental data obtained from all the composites. The thermal diffusivity measured at room temperature was in the range of (10–35) £ 1026m2 s21.

Item Type:Article
Keyword:Square pulse model, Photoflash technique, Thermal diffusivity, Dirac-d
Faculty or Institute:Faculty of Science
Publisher:Taylor & Francis
DOI Number:10.1080/10589750701879825
Altmetrics:http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/10589750701879825
ID Code:6870
Deposited By: Najwani Amir Sariffudin
Deposited On:21 May 2010 07:29
Last Modified:28 Jul 2010 01:05

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