Thomas G. Mathia, Etienne Leprat, Serge Carras, Philippe Carval
3D topography measurements and characterizations of soft, living, flexible and deformable surfaces
One of the great difficulties to day in quality control and metrological highly fidelity characterisations is the case of soft and easy deformable surfaces like living bodies with history of morphology recorded (originally vegetal, animal, humane, etc) and “memory” materials like papers, human skin, varnishes, leathers, textiles, and others. one of the authors are involved since 1970’s with 3d roughness metrology, sensors, scanning components and driving systems, tactile, capacitive pneumatically assisted and optical measurement techniques. Dealing with surface texture characterisations and efforts of theirs standardisations some fundamental results will be presented and analytically evaluated. Dimensional measurements in manufacturing, metrology software and the comparing evaluation, as well as uncertainty, tolerance, testing, calibration and testing methods and total quality management constitutes essential problem. Critical analysis of different methods in domain of 3d texture characterisations is not reported commenting advantages and week points in context of quality control due to limited space in this paper. Some case studies in terms of education will be presented.