论文部分内容阅读
据报道,美国芝加哥 Fibra-Soucvis 公司经过10年研究后已发展了一种超声传导束。目前已能通过一束钢或钛导线将声波进行传导,就象通过一束玻璃纤维把光进行传导一样,固定式金属管或金属棒是很少能适用于这一目的的,因为它损失的能量太多。若要采用其它种方法来扩大能量输入,就又会使金属细棒由于受到超声振动产生机械应力而断裂。现在采用几百根或几千根很细的耐压的金属线可传递高于一千倍的功率,其超声效率可达89%,而不会使金属线断裂。目前只是金属线束和超声源及接收器的连接尚有问题,只要有千分之一毫米的缝隙就会造成几乎是全部的能量损失。采用这种新型的声导束可使超声能量达到
It has been reported that Fibra-Soucvis, Chicago, USA, has developed an ultrasound-guided beam after 10 years of research. It has now been possible to conduct sound waves through a bundle of steel or titanium wires, just as light is conducted through a bundle of glass fibers. Fixed metal or metal rods are seldom used for this purpose because of the loss of Too much energy. If you want to use other methods to expand the energy input, it will in turn cause thin metal rods due to mechanical vibration caused by ultrasonic vibration and fracture. Now using hundreds or thousands of very fine pressure wire can transmit more than a thousand times the power, the ultrasonic efficiency up to 89%, without breaking the wire. Currently, there is still a problem with the connection of the metal wire harness to the ultrasonic source and the receiver. As long as a one-thousandth of a millimeter gap results in almost total energy loss. The use of this new type of acoustic beam allows ultrasound energy to be reached