A Way of Displacement Measurement of Ultrasonic��Amplitude��modulated Pole
CHEN Yong��chang��LI Shou��hua��TAN Jia��long
State Key Laboratory of Materials Modification by Laser��Ion and Electron Beams��School of Materials����DW�� Science and Engineering�� Dalian University of Technology, Dalian 116024�� Liaoning, China
Abstract��The displacment of ultrasonic amplitude��modulated pole is a criterion relevant to characterisation of the voice output from power ultrasound system. The known ways to measure amplitude are either with a low precision or difficult to manipulate. So, a method to measure amplitude with inductance sensor is provided. Meanwhile, for studying the influence engendered by load, two experiments, where the pole is put into the air and diesel oil, are designed to compare. The results show that this means of measurement of amplitude has a lot of advantages, such as simple apparatus, easy to manipulate, a correspondingly exact result.It is an applicable, advisable way to measure the amplitude of ultrasonic amplitude��modulated pole.��
������;���ػ�;̷��¡��. һ�ֹ��ʳ�����������λ�ƵIJ�������[J]. �й������ڿ���, 2007, 25(5): 42-0.
CHEN Yong��chang;LI Shou��hua;TAN Jia��long. A Way of Displacement Measurement of Ultrasonic��Amplitude��modulated Pole. Chinese Journal of Iron and Steel, 2007, 25(5): 42-0.
2007, Vol. 25 
