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Your search keyword '"D. Sastikumar"' showing total 3 results
Start Over Author "D. Sastikumar" Publisher iop publishing
3 results on '"D. Sastikumar"'

1. Analysis of long-pulse thermography methods for defect depth prediction in transmission mode

Author

D. Sastikumar, P. M. Mithun, and V. Kalyanavalli

Subjects
Materials science, Infrared, business.industry, Applied Mathematics, media_common.quotation_subject, Composite number, Mode (statistics), Derivative, 01 natural sciences, 010309 optics, Optics, Transmission (telecommunications), Basalt fiber, 0103 physical sciences, Thermography, Contrast (vision), business, Instrumentation, Engineering (miscellaneous), media_common
Abstract

Defect depths are estimated in the basalt fiber reinforced composite using long pulse infrared thermography in the transmission mode. Defects of different sizes and depths are induced in the basalt fiber composite using flat bottom holes and their thermograms are analyzed. Contrast derivative and parker's method are used to predict the defect depths. The proportionality factor between peak contrast time and defect depth is determined analytically for contrast derivative method. It is observed that the contrast derivative method predicts the defect depths and is independent of the defect sizes, whereas the Parker's method predicts higher depth. The experimental results are in good agreement with numerical results.

Published
2019
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2. Carbon nanoparticles synthesized by laser ablation of coconut shell charcoal in liquids for glucose sensing applications

Author

E.P. Shuaib, Gaurav Kumar Yogesh, P. Muhammed Shafi, A. Chandra Bose, and D. Sastikumar

Subjects
Laser ablation, Materials science, Polymers and Plastics, Carbon Nanoparticles, Metals and Alloys, Shell (structure), Glucose sensing, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Biomaterials, Chemical engineering, visual_art, visual_art.visual_art_medium, Charcoal
Published
2019
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3. Analysis of long-pulse thermography methods for defect depth prediction in transmission mode.

Author

V Kalyanavalli, P M Mithun, and D Sastikumar

Subjects
THERMOGRAPHY, FIBROUS composites, BASALT
Abstract

Defect depths are estimated in basalt fiber reinforced composite using long-pulse infrared thermography in the transmission mode. Defects of different sizes and depths are induced in the basalt fiber composite using flat-bottomed holes and their thermograms are analyzed. The contrast derivative and Parker’s method are used to predict the defect depths. The proportionality factor between peak contrast time and defect depth is determined analytically for the contrast derivative method. It is observed that the contrast derivative method predicts the defect depths and is independent of the defect sizes, whereas Parker’s method predicts deeper depth. The experimental results are in good agreement with the numerical results. [ABSTRACT FROM AUTHOR]

Published
2020
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