Application of Digital Photogrammetry for Measuring Deformation and Cracks during Load Tests in Civil Engineering Material Testing

Methods of digital photogrammetry depict a suitable tool for the automatic measurement of twoand three-dimensional displacements fields, deformations and surface defects such as cracks of test objects and structures during short and long time load tests. The paper gives an overview on recent research and development activities in the field of civil engineering material testing, conducted by the Institute of Photogrammetry and Remote Sensing and the Institute for Structures and Materials at Dresden University of Technology. It also describes the adaptation of photogrammetric techniques to special requirements from the civil engineering point of view. Results obtained in mass experiments are discussed, and suitable techniques for a compact visualization of complex results are presented.