Radiographic Visualization in Experimental Soil Mechanicsby Philippe L. Bourdeau, Purdue Univ, West Layfayette, United States,
Abstract: A summary of the principles of such methods is presented, i.e. stereophotogrammetry, infrared thermography and radiography and their respective ranges of applicability are discussed. Then, the development of X-ray visualization techniques in soil mechanics over the last twenty years is reviewed and the application of such techniques to the mechanics of particulate media is described. It is shown that this approach can provide accurate information on the field of internal displacement within cohesionless soil models or specimens. Strain fields and spatial variations of the state of compaction can be derived using X-ray image processing methods. Typical equipment configurations and areas of application in geotechnical engineering and earth sciences are outlined.
Subject Headings: Imaging techniques | Radiography | X rays | Soil analysis | Thermal effects | Model accuracy | Cohesionless soils
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