METHOD FOR MEASURING THE VARIATION OF THE DIAMETER AND THICKNESS OF THIN TUBES BY RESONANT CIRCUMFERENTIAL WAVE AND THICKNESS RESONANCE

摘要

The invention 0 people circumferential wave relates to the thickness of how minimal change and measuring the thickness of the diameter of a thin tube with the resonance and the apparatus, and its object is not the ultrasonic processing time of the water weight measured blood without attaching the delay material to the front of the sensor Minimal change of determining the thickness by measuring the resonant frequency of the thickness 0 people occurs, and the tube diameter is to provide a method and apparatus for measuring by the resonance frequency source to rotate around the tube.; Relates to a method of using the ultrasonic resonance by measuring the minimal change in the average diameter is measured by measuring the relative change of the average thickness of the tube diameter of the tube to generate the movement of the thickness resonance and apparatus.; The configuration of the present invention is a variation of diameter and measuring the thickness of thin-walled device, and transmitting and receiving transducers are connected meni Manipulator and a transducer drive system in which a remote controller to adjust this portion; It turned between the transmitting transducer and a receiving transducer or receiving transducer is connected to the combined pulse generator or taken care of for generating an ultrasonic pulse to the transmitting transducer and receiving a Resonant Ultrasound from the receiving transducer and; A waveform digitizer for digitizing the collected signals; From this, the frequency analysis, or receiving the ultrasonic wave, and a rectangular pulse consists of a computer for measuring the resonance spectrum by a frequency sweep.