Measuring vibration characteristics at large amplitude region of materials for high power ultrasonic vibration system

Ultrasonics ◽  
2000 ◽  
Vol 38 (1-8) ◽  
pp. 122-126 ◽  
Author(s):  
Kentaro Nakamura ◽  
Kiyotsugu Kakihara ◽  
Masahiko Kawakami ◽  
Sadayuki Ueha
Keyword(s):  
Ultrasonic Vibration ◽  
High Power ◽  
Large Amplitude ◽  
Vibration Characteristics ◽  
Vibration System ◽  
Power Ultrasonic

Effects of high power ultrasonic vibration on the cold compaction of titanium

2017 ◽  
Vol 36 ◽  
pp. 155-161 ◽  
Author(s):  
Vahid Fartashvand ◽  
Amir Abdullah ◽  
Seyed Ali Sadough Vanini
Keyword(s):  
Ultrasonic Vibration ◽  
High Power ◽  
Cold Compaction ◽  
Power Ultrasonic

Enhanced sludge dewatering based on the application of high-power ultrasonic vibration

Ultrasonics ◽  
2018 ◽  
Vol 84 ◽  
pp. 438-445 ◽  
Author(s):  
Mojtaba Mobaraki ◽  
R. Scott Semken ◽  
Aki Mikkola ◽  
Juha Pyrhönen
Keyword(s):  
Ultrasonic Vibration ◽  
High Power ◽  
Sludge Dewatering ◽  
Power Ultrasonic

Experimental Research on the Vibration Characteristics of Flexural Vibration Disk

2010 ◽  
Vol 97-101 ◽  
pp. 2558-2561
Author(s):  
Lin Zhu ◽  
Ji Yun Li
Keyword(s):  
Resonant Frequency ◽  
Ultrasonic Vibration ◽  
Reference Value ◽  
Flexural Vibration ◽  
Structure Design ◽  
Vibration Characteristics ◽  
Deep Hole ◽  
Vibration System ◽  
Maximal Amplitude ◽  
Threaded Connection

The vibration characteristics of flexural vibration disk in ultrasonic vibration system are studied through experiments. The results show that the resonant frequency of flexural vibration disk reduces with the reducing of its thickness and the resonant frequency increases with the reducing of its diameter. When designing the ultrasonic vibration system, because the transformer horn and the flexural vibration disk are designedly integrated, the defects caused by the way of threaded connection can be avoided. It is found that flexural vibration is dominating in the disk with some reflected ultrasonic through experiments, at the same time, there exist amplifying characteristics in the vibration of the disk and the maximal amplitude can reach 18 μm. The corresponding results provide certain reference value for the structure design of ultrasonic vibration system and the application in ultrasonic vibration deep-hole honing.

Automatic Frequency-Tracking Control for Ultrasound Welding System

2011 ◽  
Vol 204-210 ◽  
pp. 2041-2044
Author(s):  
Kao Feng Yarn ◽  
King Kung Wu ◽  
Kai Hsing Ma ◽  
Wen Chung Chang
Keyword(s):  
High Power ◽  
Tracking Control ◽  
Control Method ◽  
Ultrasonic Welding ◽  
Automatic Frequency ◽  
Frequency Tracking ◽  
Power Ultrasonic ◽  
Fpga Chip ◽  
Working Frequency ◽  
Welding System

A new frequency-tracking control method to catch the optimal working frequency for the high power ultrasonic welding system is proposed. In a high power ultrasonic resonant system, the induced high temperature will change the working frequency. Therefore, the proposed control method to track the optimal working frequency becomes very attractive and important. This control method is practically implemented by a FPGA chip which basically includes two logic circuits. One logic circuit is to find the optimal working frequency automatically and the other one is to adjust the working frequency by detecting the working current simultaneously. Experimental results exhibit the new method can effectively control and track frequency for high power ultrasonic welding system.

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