Authors : V.V. Mishin, I.A. Shishov and A. Mincena
Abstract: The stress-strain state and deformation of thin beryllium round-shaped windows are calculated under cyclic loading by external pressure using the finite element method. The possibility of fracture probability estimating by comparing the accumulated plastic strain in a foil with a certain plastic strain limiting (critical) value was shown for beryllium windows. A technique of plastic strain limiting (critical) intensity experimental determination by testing foil samples for bending up to fracture was proposed. Experimental testing of 0.008 mm thick beryllium windows showed a good match of predicted fracture of beryllium foil with experimental data.
V.V. Mishin, I.A. Shishov and A. Mincena, 2017. Investigation of the Thin Beryllium Windows Fracture Probability under the External Cyclic Load. Journal of Engineering and Applied Sciences, 12: 7242-7249.