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Kim, Hong Joo
Department of Physics, Kyungpook National University, 80 Daehak-ro buk-gu, Daegu 41566,
Engineering

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Simulation of Void Detection System using Gamma-Ray Compton Scattering Technique Wirawan, Rahadi; Waris, Abdul; Kim, Hong Joo; Djamal, Mitra; Sari, Mona Berlian
Journal of Engineering and Technological Sciences Vol 51, No 3 (2019)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (23.168 KB) | DOI: 10.5614/j.eng.technol.sci.2019.51.3.5

Abstract

A simple void detection system for concrete was successfully developed using high-penetration gamma rays with Compton scattering. This research attempted to identify a void in the subsurface of a concrete volume that could not be accessed from any of the sides. Monte Carlo simulation using GEANT4 toolkit was performed to investigate the gamma-ray backscattering events. An NaI(Tl) detector was used with 60Co and 137Cs as gamma-ray sources. The void?s location was successfully detected during material target scanning. Density discrepancies conduce variance of the backscattering peak produced due to the presence of a void. Compared to 60Co as the gamma-ray source, 137Cs is a better choice for application in NDT systems using Compton scattering.
Co-Authors Abdul Waris Mitra Djamal Sari, Mona Berlian Wirawan, Rahadi