Over the years, rotary compressors have gained significant popularity and widespread usage because of their compact nature and good vibration characteristics. Although possessing many advantages over the reciprocating compressors, one of the performance limitations of the rotary machines is their inferior mechanical efficiency due to the existence of large frictional losses, which occurs as a r...

A new acoustical parameter, called Intensity of Acoustic Radiation (IAR), was recently defined, and resulted very well related with mechanical vibration of sound source, being able to quantify the sound efficiency of musical Instruments In this paper the IAR was experimentally measured on Persian string musical Instruments. IAR relates mechanical vibration of surface (e.g. soundboards) and soun...

Abstract In this contribution, the accuracy and efficiency of various modeling assumptions numerical settings in thermo-mechanical simulations powder bed fusion (PBF) processes are analyzed. Thermo-mechanical used to develop a better understanding process determine residual stresses distortions based on temperature history. these numerically very complex simulations, often made that reduce comp...