Computerized Stress Relaxation Tester

Product Description

Stress Relaxation Tester, Computerized Tensile Stress Relaxation Testing MachineFeatures ofStress Relaxation Tester, Computerized Tensile Stress Relaxation Testing MachineReal-time drawing of curves of remaining load with time, or temperature with time.Algorithm to predict specimens stress relaxation performance after 1000 hours (or any specified value in hours), with the option of single or double logarithm. Capable of predicting with standard specimen data or real-time collected data (Suggested). Integrated with an extensive specimen library to improve the precision and reliability of testing results.Splitting the sampling stage into four sub-stages and applies different sampling cycles in consideration of the logarithm characteristic of time, improving the reliability of data greatly.Support for 100-hour tests. Test time can be assigned at will. E.g. 24-hour test.Automatically retrieves test data and inspects the stress relaxation performance of the specimen. (e.g. stress relaxation rate, relaxed stress, relaxation rate, etc.)Closed loop control of channels such as load, displacement, deformation, etc. Smooth switching in between. Technical Specifications Model DISR002 Capacity 500kN Load measurement range 10 - 500kN Load measurement accuracy 0.5% Load resolution 1/500000 of Max capacity, no stepping, no change in full scale Load transducer creep 0.03%F.S. Temperature effect on load transducer sensitivity 0.03%F.S./10 Deformation measurement range 0-10 mm Deformation measurement accuracy 0.5% Grip displacement measurement accuracy 0.5% Grip speed adjustment range 0.01-60mm/min Grip speed accuracy 0.5% Loading speed adjustment Range 0.01%- 2.5%F.S./s Loading speed controlling accuracy 0.5% Temperature measurement resolution 0.1 Temperature measurement accuracy 0.3 (-20x 80),0.5(-40-20/80x110) Valid tensile travel 100 mm Test space Max distance between left/right grip: 2450 mm Specimen dimensions Diameter for steel strand: 12.7 mm, 15.4 mm, length 3.2 m Diameter for PC steel rod: 4mmx 16mm, length 3.2 m Frame dimensions (2500 x 540 x 1055)mm Power supply 1.5kW/AC380V/50Hz