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pro vyhledávání: '"Polina S. Anufrenkova"'
Publikováno v:
International Journal of Coal Science & Technology. 8:562-574
Cyclic freezing–thawing can lead to fracture development in coal, affecting its mechanical and consumer properties. To study crack formations in coal, an ultrasonic sounding method using shear polarized waves was proposed. Samples of three coal typ