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


Citation

Haydari, Mehdi and Abd. Moksin, Mohd Maarof and Mat Yunus, Wan 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; ESSN: 1477-2671

Abstract / Synopsis

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.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: 10.1080/10589750701879825
Publisher: Taylor & Francis
Keywords: Square pulse model; Photoflash technique; Thermal diffusivity; Dirac-δ
Depositing User: Najwani Amir Sariffudin
Date Deposited: 21 May 2010 15:29
Last Modified: 22 Sep 2016 16:48
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1080/10589750701879825
URI: http://psasir.upm.edu.my/id/eprint/6870
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