Analysis of Vibration Frequencies of Piezoelectric Ceramic Rings as Ultrasonic Transducers in Welding of Facial Mask Production

The explosive demands for facial masks as vital personal protection equipment （PPE） in the wake of Covid-19 have challenged many industries and enterprises in technology and capacity， and the piezoelectric ceramic （PZT） transducers for the production of facial masks in the welding process are in heavy demand. In the earlier days of the epidemic， the supply of ceramic transducers cannot meet its increasing demands， and efforts in materials， development， and production are mobilized to provide the transducers to mask producers for quick production. The simplest solution is presented with the employment of Rayleigh-Ritz method for the vibration analysis， then different materials can be selected to achieve the required frequency and energy standards. The fully tailored method and results can be utilized by the engineers for quick development of the PZT transducers to perform precise function in welding.