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

Volume

2

fYear

2010

fDate

11-12 May 2010

Firstpage

768

Lastpage

772

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICICTA.2010.454

Filename

5523205