CRACK WIDTH MEASUREMENT FOR NON-PLANAR SURFACES BY TRIANGLE MESH ANALYSIS IN CIVIL ENGINEERING MATERIAL TESTING
- 1Institute of Photogrammetry and Remote Sensing, Technische Universität Dresden, Germany
- 2Institute of Construction Materials, Technische Universität Dresden, Germany
Keywords: Material Testing, Deformation Measurement, Crack Width Measurement, Triangle Mesh, Non-planar Surface
Abstract. This publication concentrates on the photogrammetric crack width measurement of crack patterns of concrete probes under impact loading in high-speed stereo image sequences. The presented algorithm works for non-planar specimens with deformations that only appear tangential to the surface and the method is based on triangle mesh analysis. Experiments were conducted with cylindrical specimens with an impact load affecting parallel to the main axis of the cylinder.