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Title: Novel photomechanics approach to high strain rate testing of materials
Abstract:
The rapid development of fast and ultrafast imaging techniques will lead to major breakthroughs in the identification of material behaviour at high strain rates in the near future. The objective of this talk is to give some ideas on how to take advantage of full-field measurements to overcome some major issues in the dynamic mechanical testing of materials, based on recent examples.
One of the driving forces is the fact that the acceleration forces can act as a distributed load cell over the volume (provided that the material density is known), and can therefore be used in the identification process without the need to measure external forces.
The presentation will focus on the theoretical aspects of the identification method known as the Virtual Fields Method (VFM, www.camfit.fr). Then, very recent examples will be presented on composites, metals and concrete.
Professor Fabrice PIERRON's Short Bio
Dr. Fabrice Pierron is Professor at Arts et Métiers ParisTech (previously ENSAM) in Chalons en Champagne, France and founder of the Mechanical Engineering and Manufacturing Research Group (LMPF, 20 people, www.lmpf.net). He graduated from ENSEM in Nancy, France, in 1989, and received his PhD from Lyon University, France, in 1994. After an Assistant Professor position at the Ecole des Mines de Saint-Etienne from 1994 to 1999, he moved to Arts et Métiers ParisTech on his current position. Dr Pierron is an expert in mechanical testing of composite materials but has been focusing his research on the use of novel identification strategies based on full-field measurements and heterogeneous tests for about ten years. In particular, he has been instrumental in the development of the Virtual Fields Method. Dr. Pierron has published more than 70 international journal papers, mainly in composites testing and the Virtual Fields Method. He is presently Editor-in-Chief of the international journal " Strain ".