Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/3304
Title: An Investigation of Digital Image Correlation for Earth Materials
Authors: Shukla, Nutan
Mishra, Manoj Kumar
Keywords: DIC
RG-DIC
Strain Measurement
Static Loading
Full-Field Displacement
Issue Date: Jun-2019
Citation: Annual Conference and Exposition on Experimental and Applied Mechanics: Expanding the Boundaries of Mechanics, Reno, Nevada, USA, 3-6 June 2019
Abstract: Strain measurement is vital in material and mechanical testing. The conventional contact based approaches as strain gauges, extensometers, acoustic emission, seismic waves etc. have limitations like sensitivity to contact areas, susceptible to external noise, vulnerable to breakage, influenced by surrounding environment etc. Recently, the development of non-contact based methods has eliminated these challenges. Digital Image Correlation is an optical, non-contact based technique which is being widely used in measuring full-field displacement. The technique is based on acquisition of digital images taken before and during loading and developing a correlation between them with subpixel accuracy. In this paper, the behavior of equivalent coal specimens at varying depth from 92m to 126m have been evaluated for static loading condition using non-contact based approach i.e. Reliability-guided Digital Image Correlation technique (RG-DIC). There exists a good agreement between the contact (strain gauge) and non-contact based approaches (DIC) for static loading condition. So, Digital Image Correlation (DIC) can also be a reliable strain measuring approach for investigating earth materials.
Description: Copyright of this document belongs to proceedings publisher.
URI: http://hdl.handle.net/2080/3304
Appears in Collections:Conference Papers

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