Recent developments in brittle and quasi-brittle failure assessment of graphite by means of SED approach
Brittle fracture of isostatic graphite is studied experimentally and theoretically using plates containing key-hole notches subjected to different degrees of loading mixity.The main purpose of this paper is twofold.First,to provide a new set of experimental results on fracture of notched graphite samples,with different values of loading mixity and notch radii,which may be helpful for researchers because enlarges the very scarce available data; and second,to provide a fracture criterion for polycrystalline graphite under the above mentioned conditions.The averaged value of the strain energy density over a well-defined volume is used to predict the static strength of the considered specimens.Good agreement is found between the experimental data for the critical loads to failure and the theoretical predictions based on the constancy of the mean strain energy density over the material volume.Some preliminary tests from compression tests on the same material are summarized in the paper as well.
Brittle failure Notches Strain Energy Density (SED)
Filippo Berto Paolo Lazzarin M.R. Ayatollahi
Department of Management and Engineering,University of Padua,Stradella San Nicola 3,36100,Vicenza,It Fatigue and Fracture Research Laboratory,Center of Excellence in Experimental Solid Mechanics and Dy
国际会议
北京
英文
1-8
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）