In this paper, a strain-intensity-factor-based method is proposed to calculate the fatigue crack growth under the fully reversed loading condition. A theoretical analysis is conducted in detail to demonstrate that the strain intensity factor is likely to be a better driving parameter correlated with the fatigue crack growth rate than the stress intensity factor (SIF), especially for some metall...

• Analytical models are presented for a SMA circular bar subjected to direct and reversed torsional loading. The distributions of shear stress Martensite variants calculated analytically at each stage. A closed form torque-twist relation is the entire process. approach validated against similar results available in literature. Application seismic response dissipative systems based on helical sp...

In this investigation, a kenaf/PLA composite specimen was subjected to the fatigue load, and results were analyzed numerically. Some of most significant tool aspects that looked into life expectancy, damage, alternative stress, biaxiality indication. The static structural utilized in order predict numerical analysis, calculations performed with GoodMan theory fatigue. loading completely reverse...

The structure of the gaussian auxiliary field approximation in the theory of phase ordering kinetics is analysed with the aim of placing the method within the context of a systematic theory. While we are unable to do this for systems with a scalar order parameter, where the approximation remains uncontrolled, a systematic development about the gaussian approximation can be outlined for systems ...

Slab – column connections that are subjected to combined gravity and horizontal loading during an earthquake prone premature failure due punching shear. Traditional solutions avoid increase the displacement capacity of this type connection include using stirrups double-headed studs as shear reinforcement. The use High-Performance Fiber Reinforced Concrete (HPFRC) in a small region slab around s...

Push-pull tests at fixed plastic strain amplitude or stress were run on a TWIP steel, and followed by TEM observations, to analyze its cyclic behavior in relation with the deformation mechanisms. The kinematic isotropic components of flow measured throughout whole hardening/softening stages, their evolution cumulated was compared those tension. rise internal found responsible for initial harden...

In situ tensile and reversed cyclic tests were run on a TWIP steel in SEM, with High-Resolution Digital Image Correlation (HR-DIC) measurements of the plastic strain field few selected grains prone to twinning, spatial resolution between 150 250 nm, or under an AFM, surface steps height at emerging deformation twins. Evidences detwinning upon load reversal, as well quantitative data twinning/de...