Initial crack detection of Brazilian discs by thermal change for different types of rock specimens

Rock mechanics is an essential field of mining and civil engineering that has many application areas, such as opening drifts, tunneling activities, and slope stability. The understanding of rock behavior is of key importance for both underground and surface operations. Commonly utilized technology in rock mechanics laboratory testing has the capability to be enhanced by various systems such as imaging devices. The detection of the crack coalescence, especially in fracture mechanics, can be performed either manually or by using systems based on high-speed cameras, thermal imaging, or acoustic emission. This study focuses on the thermal imaging of different types of rock specimens under indirect tensile loading in a displacement-controlled testing environment. The heat dissipation during the initial crack formation is aimed to be captured by an uncooled LWIR (Longwave Infrared) thermal camera. The crack initiation points, crack propagation behavior, and fracture plane will be tracked with the thermal camera under varying displacement rates. As a result, it is expected that this study will provide a better understanding and detection of crack coalescence for different rock types by using thermal imaging techniques. Copyright © IMCET 2019 International Mining Congress and Exhibition of Turkey. All rights reserved.


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Citation Formats
A. Kırmacı and M. Erkayaoğlu, “Initial crack detection of Brazilian discs by thermal change for different types of rock specimens,” Antalya, Türkiye, 2019, p. 399, Accessed: 00, 2021. [Online]. Available: