Mona Berlian Sari, Rahadi Wirawan, Abdul Waris, Hong Joo Kim, Mitra Djamal
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 with60 Co and137Cs 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 to60Co as the gamma-ray source,137Cs is a better choice for application in NDT systems using Compton scattering. ©2019 Published by ITB Journal Publisher,.
Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung, 40132, Indonesia; Faculty of Mathematics and Natural Sciences, Universitas Mataram, Jalan Majapahit No. 62, Mataram, 83115, Indonesia; Department of Physics, Kyungpook National University, 80 Daehak-ro buk-gu, Daegu, 41566, South Korea; Faculty of Science, Institut Teknologi Sumatera, Jalan Terusan Jenderal Ryacudu, Way Hui, Jati Agung, Selatan, 35365, Lampung, Indonesia
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