05.04.2017 - 07.04.2017
SHIMADZU Europe invites you to join the conference CompTest 2017 and meet the reputed scientists and engineers working in testing, characterization, modelling and simulation of structural composites. Come and meet the members of our Innovation Center-Composite who will present our equipment for static and dynamic materials testing with Shimadzu HPV-X2 Ultra High Speed Camera, 10 Million frames per second and the possibilities this gives in combination with DIC analysis.
- Strength and fracture of thin ply laminate composites: experiments and analysis
John Botsis et al., EPFL
- New opportunities in high strain rate testing of composite materials
Fabrice Pierron, University of Southampton
- Development of carbon fiber composite materials and future directions
Makoto Endo, Toray Industries
"Advanced testing procedure for efficient fatigue assessment of polymer composites."
Prof. Dr.-ing. Frank Walther, Dipl.-Ing. Daniel Hülsbusch, TU Dortmund.
Fiber-reinforced polymers (FRP), due to their great lightweight potential, are increasingly used in transportation industry and therefore subjected to cyclic loading. In this study a testing procedure is presented for resource-efficient determination of the cyclic material properties and deformation behavior, respectively damage propagation. Therefore, multiple step tests have been instrumented with physically-based measurement techniques for carbon (CFRP) and glass fiber-reinforced polymers (GFRP). In this context, hysteresis measurements, i.e. dynamic Young’s modulus and loss energy, as well as temperature, electrical resistance and acoustic emission measurements were applied and correlated with in situ computed tomography (CT) in intermitting tests. Furthermore, strain rate dependency has been investigated by varying frequency to realize constant load rate for indirect strain rate adjustment while cyclic loading. For advanced stiffness measurements, tensile tests have been included in testing procedure to compensate strain rate influence. It was found that the developed testing procedure for FRP represents a competitive advantage in terms of resource-efficiency compared to constant amplitude tests. The testing procedure especially enabled a comprehensive description of the material degradation under cyclic loading and gains additional information regarding damage state and damage propagation by combining physically based measurement techniques and in situ CT.