Abstract: Abstract. Traditional tensile tests are not suitable for evaluating the mechanical properties of in-service pipelines, while indentation testing provides a more convenient alternative due to its minimal damage and effectiveness ...

Abstract: Abstract. Under the complex downhole conditions of torque and pressure, the friction-welded joint of a drill pipe becomes the critical region for fracture failure due to inherent stress concentration and welding residual ...

Abstract: This paper introduces a generic function for automated modeling and feedforward control of planetary gears (PGs). Given the information on configuration, namely, the internal connection relationship between each PG, location ...

Abstract: Motor speed synchronization is important in gear shifting of emerging clutchless automated manual transmissions (AMT) for electric vehicles and other kinds of parallel shaft-based powertrains for hybrid electric vehicles. ...