In this paper, a new roofing system is introduced, which is constructued using the precast composite sandwich panels. This roofing sandwich panels system consists of three kinds of precast concrete sandwich panels including capital panels, beam or between columns panels, and slab or middle panels. The panels are composed of three layers; A high strength reinforced concrete top layer. A thick la...

sandwich panel with central core honeycomb aluminum as one of the main shielding structures because of their high strength-to-weight ratio and improved energy absorption capacity, has been attracted the attention of many researchers and practitioners in recent years. this paper initiates and presents a new type of central core honeycomb formed by hydroforming process. the study is augmented by ...

Transformation of waste into resources is an important part the circular economy. Nowadays, recovery materials in most effective way crucial for sustainable development. Composite offer great opportunities product development and high performance use, but their position a economy system remains challenging, especially terms material recovery. Currently, methods applied recycling composites are ...

Using real mechanical controls, this experiment studied strength and reversibility of direction-of-motion stereotypes and response times for different configurations of digital display and rotary control. The effect of instruction of change of number direction (I) and control plane (P) on movement compatibility was analyzed with precise quantitative measures of strength and reversibility index ...

As the world moves toward decarbonization, Japan is experiencing a rapid introduction of solar modules. However, country does not have an adequate social system for managing waste photovoltaic (PV) panels. A generation estimate would be needed to do this effectively. Usually, estimation performed by assuming that lifespan distribution primarily dependent on mechanical life target item. consider...

the increase of cell temperature with increased irradiance is probably the mostsignificant disadvantage of using photovoltaic modules equipped with booster reflectors. the aimof this study is to investigate the possibility of improving the performance of a photovoltaic waterpumping system by using a booster reflector and to keep the temperature of pv panels at a lowlevel by cooling pv panels wi...