Title :
New Idea for Hydraulic Testing Machine with Stress and Strain Rates Controlled and its Realization
Author :
Jingqing, Du ; Shiqiao, Gao ; Shaohua, Niu
Author_Institution :
State Key Lab. of Explosion Sci. & Technol., Beijing Inst. of Technol., Beijing, China
Abstract :
Based on the relationship between pressure and flux of thin-walled hole, a new idea is proposed for hydraulic testing machine. Using transducer and computer technique, hydraulic system is formed by SCM(single chip micyoco), needle valve, frequency converter and electric machine, to complete stress and strain rates control. This idea has been realized in traditional hydraulic pressure testing machine and hydraulic universal testing machine, and some excellent results have been obtained. According to the theory and practice, the new idea can meet the need of constant stress and strain rates testing, and replace proportional valve and servo valve, thereby it can be widely applied for various hydraulic testing machines.
Keywords :
hydraulic systems; machine testing; stress-strain relations; transducers; valves; computer technique; electric machine; frequency converter; hydraulic pressure testing machine; hydraulic universal testing machine; needle valve; single chip micyoco; strain rate Control; strain rates testing; stress rate control; stress rates testing; thin-walled hole; transducer; Capacitive sensors; Frequency conversion; Hydraulic systems; Needles; Strain control; Stress control; Testing; Thin wall structures; Transducers; Valves; needle valves; strain rate; stress rate; testing machine;
Conference_Titel :
Intelligent Computation Technology and Automation (ICICTA), 2010 International Conference on
Conference_Location :
Changsha
Print_ISBN :
978-1-4244-7279-6
Electronic_ISBN :
978-1-4244-7280-2
DOI :
10.1109/ICICTA.2010.454
