Deformation characterization method of typical double-walled turbine blade structure during casting process

Nano-Sized Al2O3–Gr Reinforced Al7075 Hybrid Composite: Impact of Cooling Agents on Mechanical, Wear, and Fracture Behavior

“…The sort of hard particles is, in general, the key element boosting material strength. , The correlation between the hard particles and the dislocation boosts the strength of the resulting composites. Dong et al asserted that the increase in ultimate tensile strength was caused by the addition of hard Alumina particles to the Al7075 matrix, which boosts the strength of AA7075. Tensile strength values increased as the amount of Al 2 O 3 increased because of the low porosity and homogeneous dispersion of Al 2 O 3 particles.…”

“…Results demonstrate that the heat treatment significantly influences the intermetallic bonding between the reinforcement and matrix material. Compared to their as-cast state, Al composites significantly improve their mechanical characteristics after heat treatment At temperatures between 250 and 350 °C with strain rates between 0.001 and 0.1 s –1 , a tensile test of an Al alloy reinforced by silicon carbide and alumina particulates produced by powder metallurgy were carried out.…”

Investigating energy absorption of thin-walled steel structures with combined mechanisms including inversion, folding and expansion

“…To justify the increase in the force required for inversion due to the increase in the thickness of the shell, it is possible to use the previous research that was carried out in this field. According to the equation provided by Niknejad and Tavasolimanesh, 15 the necessary force in the inversion process of aluminum frustum was extracted according to equation (1). In this equation, d 0 is the diameter of the cylindrical shell, which is filled in accordance with reference, 15 and α represents the semi-angle of the capped-end frustum.…”

“…The force-displacement curve and consequently the energy-displacement curve of the samples introduced in this research can be divided into three different parts. The first part is related to the inversion process of the lower frustum, the force values of this process can be extracted according to equation (1). The second part is related to the simultaneous folding of the upper frustum and the cylinder shell.…”

“…Thin-walled structures are used in many industries and different studies have been done on them. 1,2 Thin-walled energy absorbers are one of the types of structures that are used in the body of motor vehicles to reduce the weight and energy consumption 3,4 and also reduce the damage caused by traffic accidents as effectively as possible. 5 These structures can be made using sheets, produced by rolling, 6 shells and other types of raw materials.…”