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Rock Fragmentation by High Frequency Fatigue.
Cain PJ; Peng SS; Podnieks ER
Proc Adv Rock Mech 3D Cong Internat Soc Rock Mech 1974 2:367-372
The fatigue failure characteristics under high-frequency (10 khz) cyclic loading were determined for Tennessee marble, charcoal granite, and Sioux quartzite. The fatigue strength for each rock type shows a correlation with the static strength. The analysis of the damping and internal heat generation indicated that nearly all of the power input was accounted for as a change in enthalpy. The thermal strain was calculated and found to range up to 30 pct of the dynamic strain amplitude. The specific energy required for failure was determined and possible applications are discussed.
Proc. Adv. Rock Mech., 3D Cong. Internat. Soc. Rock Mech., V. 2, Pt. A, 1974, PP. 367-372
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