V.V.  Mishin, I.A.  Shishov, A.  Mincena, 
    Investigation of the Thin Beryllium Windows Fracture Probability under the
External Cyclic Load,
    Journal of Engineering and Applied Sciences,
    Volume 12,Issue 23,
    2017,
    Pages 7242-7249,
    ISSN 1816-949x,
    jeasci.2017.7242.7249,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2017.7242.7249)
    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.
    Keywords: Thin beryllium foils;beryllium fracture;beryllium deformation;beryllium windows for X-ray detectors;possibility;determination