The most used material in construction is concrete. This study aimed to investigate the impact of recycled aggregate on compressive and tensile strength To address issue accumulating tons aggregates, a new method was developed using chemical additive fractions convert these aggregates into valuable products. overconsumption materials significant problem that leads route overflow, pollution, roa...

Abstract The expansion induced by cold working is a common process that generates residual stresses. It used when fatigue damage accumulation and life reduction of aluminum alloy perforated plates an issue in the aeronautics industry. This attractive solution to extend lifetime these structures. aims at generating stresses increases thereby strength hollow parts including with holes commonly ma...

The standard BS EN 15227 requires accurate numerical modelling of railway vehicle energy absorbers that must be correlated against experimental data. Although thin-walled tubes can exhibit anisotropy, such models have traditionally included isotropic material properties. Thus, this work investigates whether anisotropic may increase the accuracy shrinking tube absorbers. Tensile testing extruded...

Abstract The composite over-wrapped pressure vessel (COPV), which were made by ultra-thin metal liner and high strength carbon fiber reinforced plastic (CFRP), has performance factor (PV/W). COPV widely used in electric propulsion system (EPS) of space system. ANSI/AIAA S-081-2000 is a general standard for aerospace field at home abroad, it specified the design elements, references, specificati...