Life Cycle of Running Blades Calculated with 3D Measuring Data

05/2015In order to exactly calculate the life cycle of running blades, researchers of the University of Paderborn, Germany, examined the durability of these prostheses. During load testing, optical measuring systems were used.

Sports prostheses have to meet high requirements. Particularly in sports, rapid motions and thus higher loads are being developed. In order to make reliable statements on the life cycle of sports prostheses, the Chair of Automotive Lightweight Construction at the University of Paderborn, Germany, examined the durability of running blades during a research project. The project was conducted in cooperation with the German company Orthopädietechnik Winkler and other partners.

For cyclic load testing, both at the test stand and in patient tests, the non-contact measuring system PONTOS was applied. In contrast to conventional methods like strain gauges, the optical sensor captures three-dimensional displacements and strains on the running blade.

The results were used to calculate the life cycle of prostheses in order to increase the athlete’s safety. In addition, the measuring data was used for simulation verification as well as for a comparison with traditional measuring methods, such as strain gauges.

The complete application note is available in English as PDF.