Potassium-argon analysis by stqwise dissolution provides a way to measure in detail the distribution of argon isotopes and potassium in rock salt. The method can be used for salt that contains only trace amounts of potassium, because the potassium and argon in detrital silicates within the salt are not released during the dissolution. Water may be used as the solvent when relatively large a...

Time-dependent creep stress redistribution analysis of thick-walled FGM spheres subjected to an internal pressure and a uniform temperature field is investigated. The material creep and mechanical properties through the radial graded direction are assumed to obey the simple power-law variation throughout the thickness. Total strains are assumed to be the sum of elastic, thermal and creep strain...

Underground energy storage is an important function of all supply systems, and especially concerning the seemingly eternal imbalance between production demand. Salt rock underground storage, for one, widely applied in both traditional renewable fields; this particular technique can be used to store natural gas, hydrogen, compressed air. However, resource diversification structural complexity ma...