نتایج جستجو برای: ultrasonic parameters
تعداد نتایج: 604637 فیلتر نتایج به سال:
This chapter is dedicated to ultrasonic piezoelectric ceramic power transducers. These elements are now the most popular source of high power ultrasound and is used in many industrial applications. High power ultrasonic waves are generally used in such industrial processes as welding, acceleration of chemical reactions, scavenging in gas medium, echo sounding and underwater communication (sonar...
The welding of foils, textiles, and textile composites made thermoplastic polymer materials using machines with an ultrasonic rotary sonotrode is a high-tech technique. Many authors have dealt only few parameters in earlier papers, mainly mentioning the speed, i.e., time, power generator. In this paper, acoustic model defined. Based on model, group 44 different important for has been summarised...
BACKGROUND Ultrasonic backscatter parameters were analyzed in hypertensive patients and divided into groups according to both severity of left ventricular hypertrophy (LVH) (group A: no LVH [n=52]; B: mild to moderate LVH [n=55]; and C: severe LVH [n=10]) and left ventricular geometry (normal geometry [n=44]; concentric remodeling [n=8]; concentric hypertrophy [n=25]; and eccentric hypertrophy ...
Al wire bonding, also called ultrasonic wedge-wedge bonding, is a microwelding process used extensively in the microelectronics industry for interconnections to integrated circuits. The bonding wire used is a 25 m diameter AlSi1 wire. A friction power model is used to derive the ultrasonic friction power during Al wire bonding. Auxiliary measurements include the current delivered to the ultraso...
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