Study on reappearance test of rail tread oblique crack

The oblique cracks due to unidirectional tension in brittle materials were analyzed coupling the Sidoroff damage model with fracture mechanics.

On the basis of formation and development characteristics of oblique rail cracks in Guangzhou-Shenzhen railway line,the rail asymmetrical grinding was used to prevent and decrease the appearance of oblique cracks.

By using Muskhelishvili complex function methods, the problem of bimaterial incline crack was induced to the solving of Cauchy singular integral equations, in which the unknown functions are the dislocation density functions.

By using the Muskhelishvili complex methods, the issue of interaction between bimaterial incline cracks was reduced to solve the Cauchy singular integral equations, in which the unknown functions are the dislocation density functions.

Simple talk about the inclined cracks of prestressed concrete web of steel beam;

Aiming at the common occurrence of inclined cracks of cast-in-place concrete slab,this paper chiefly analyzes the 45 diagonal through cracks with an example in engineering practice,and applies the number analysis to calculate 1/8 places of biggest and main tensile stresses in the case of the shrink stress and temperature stress.

Fractal theory-based research on diagonal crack of reinforced concrete simple beam with high-strength stirrup;

Based on genetic neural network and modal strain energy, a two-stage method for detecting diagonal cracks is proposed to identify the location, angle and depth of diagonal cracks in beams.

Used HRB400 steel as stirrup, concrete beam may be appear oversized diagonal crack that cannot satisfy the engineering requirement for applicability and durability.