Top hammer drilling is a common method to drill holes in rock formations mining and civil engineering applications. Failure of machine components has significant impact on the cost period operation. Internal percussive hammers experience extreme loading conditions during their service life. The focus present case study characterize failure mechanisms two cylindrical pistons subjected loading. i...

The accurate prediction of reference points on the axial stress–axial strain relationship fiber-reinforced polymer (FRP)-confined concrete is vital to pre-design structures made with this system. This study uses an artificial neural network (ANN) for predicting hoop rupture (εh,rup) and transition zone, namely (εc1) stress (f’c1), stress–strain curves FRP-confined concrete. These are key parame...

Surface-mounted high-speed permanent magnet motors are known for their small size, high power factor, and reliable control operation. However, these may have low mechanical strength weak tensile in rotor magnet, which necessitates the adoption of an external sleeve protection. Currently, carbon fiber composite sleeves garnering increasing attention durable protective capabilities. Despite appar...