The complex tri-layered structure of the aortic valve (AV) results in anisotropic quasi-static mechanical behaviour. However, its influence on AV viscoelasticity remains poorly understood. Viscoelasticity may strongly influence AV dynamic mechanical behaviour, making it essential to characterise the time-dependent response for designing successful substitutes. This study attempts to characteris...

Underground caverns in rock salt deposits are the most secure disposal method and a type of gas-storing facility. Gas storage plays a vital role in ensuring that a strategic relationship is secured between an established energy infrastructure provider and a midstream energy company. The Fischells Brook area is a pillow-shaped body of salts located in the St. George's Bay area of southwest Newfo...

In the present paper, a new type of surface-bonded fiber Bragg grating (FBG) dynamometry bolt is designed. It assumed that adhesive layer linear viscoelastic material and its creep mechanical behavior expressed by standard solid model. The shear strain transfer model FBG sensor established. Additionally, instantaneous quasistatic functions are obtained. validated uniaxial tensile test long-term...

This study investigates the effect of prefabricated fissures on creep mechanical strength and acoustic emission (AE) characteristics sandstone. Under same test conditions, indoor uniaxial compression AE tests were performed intact artificially fissured sandstone specimens using a rock rheometer PCI-? tester controlled with an RLJW-2000 microcomputer. The variation strain, long-term strength, nu...

In order to investigate the creep damage and crack growth of TC11, we established finite element model based on ductility exhaustion constitutive model. This paper uses uniaxial test TC11 at 500℃ as a reference studies effect initial dimensions CT specimen surface specimen. The length has significant material. larger length, higher rate, tip equivalent stress triaxiality. greater influence for ...

The effect of grain size on the mechanical properties and creep rupture 253 microalloyed (MA) austenitic stainless steel (ASS) was investigated. cold rolling process with a 53% reduction in thickness applied to followed by annealing at 1100 °C over 0, 900, 1800, 3600 s obtain sizes 32.4, 34.88, 40.35, 43.77 µm, respectively. Uniaxial tensile micro-Vickers hardness tests were carried out study r...

Assessment of creep damage and residual creep life of a cast HP 40 Nb Mod. Reformer tube was performed, wherein the experimental Larson–Miller diagram and area fraction of creep voids were adopted. The state of damage of the tube in service was metallographically analyzed by using light and electron microscopy. Samples from the serviced reformer furnace tube were cut and prepared for void exami...

A series of tests were performed to investigate the creep characteristics of soil in interactive marine and terrestrial deposit of Pearl River Delta. The secondary consolidation test results show that the influence of consolidation pressure on coefficient of secondary consolidation is conditional, which is decided by the consolidation state. The ratio of coefficient of secondary consolidation a...

SUMMARY c The concept that creep response is the result of a transient approach to a minimum strain rate continuously modified by accumulating damage has been investigated using high precision creep data. It was considered that the accumulated creep strain might be some measure of internal damage and curves of log creep strain rate against creep strain are shown to exhibit linearity at higher s...