Rock structures are subjected to cyclic tension-compression loading due to a blasting, earthquake, traffic and injection-production in underground storage case. Therefore study the fatigue behavior of rock samples under this type of loading is required. In this study, the accumulated fatigue damage for a Green Onyx rock sample which consisted of only one mineral composition with two-step high-l...

The activity of phosphorylase kinase and myosin light chain kinase can be regulated by calcium-calmodulin or cyclic AMP. Since phosphorylation of the 20,000dalton phosphorylatable light chain (P-light chain) of myosin may be involved in the regulation of contractile activity in smooth muscle, we examined the relationship between P-light chain phosphorylation, phosphorylase a formation, and isom...

A micromechanical model is developed for the prediction of growth rate fatigue damage zones in unidirectional fibre composites subjected to cyclic tension-tension loading. The occurs by progressive breaks caused debond crack tip stress fields fibres that have broken earlier load cycles. tips are taken advance along due a slip-induced decrease frictional sliding shear acting debonded parts under...

Fully reversed stress-controlled tension–compression fatigue experiments (R = −1) were conducted to study the cyclic deformation and behavior of 7075-T651 aluminum alloys with without a surface mechanical rolling treatment (SMRT). The strain amplitude, ratcheting effect, asymmetric base metal (BM) SMRT specimens analyzed. showed more remarkable effects asymmetry under high stresses. Fatigue tes...