Servo Hydraulic Tension Torsion Fatigue Testing Equipment ± 1% Displacement Accuracy

Servo hydraulic fatigue testing machine
±25kN ~ ±2000kN 0.01~50Hz tension torsion fatigue testing HDT-D
Electro-hydraulic servo fatigue machineHereinafter referred to as testing machine is mainly used for testing the metal, nonmetal and composite materials at room temperature (high or low temperature, corrosive environment) under the dynamic characteristics of machine test can be carried out as follows:Tensile, compression, torsion,twisting composite fatigue testBy the electric controller, servo valve, load sensor, displacement sensor, stretch meter, torque sensor and Angle sensor and the computer to form a closed-loop servo control system, can accurately control the test process automatically, and automatic measurement test force, displacement, deformation, test parameters, such as torque and Angle.
Tester can realize can realize sine wave, triangle wave, square wave, half sine wave and cosine wave, triangle wave, and square wave, waveform, such as tensile, compression, bending and torsion, can be low and high cycle fatigue mechanics test, etc.Environmental test equipment can be configured to complete environmental simulation tests at different temperatures.
Machine operation is flexible and convenient, moving beam lifting, lock, specimen clamping are completed by the button operation, the use of advanced hydraulic servo drive technology loading, high precision dynamic load sensor and a high-resolution magnetostrictive displacement sensor measurement specimen strength and displacement.All digital measurement and control systems realize force (or torque), deformation, displacement (or Angle) PID control, and smooth transition between each control.The test software works in WINDOWS XP/WINDOWS 7 Chinese environment, powerful data processing function, test conditions and test results automatic memory disk, display and print.Test process include all computer control, the machine is scientific research, metallurgy, construction, national defense war industry, colleges and universities, machinery manufacturing, transportation and other industries ideal cost-effective test system.
Relevant standards
1) GB/T 2611-2007 "general technical requirements of testing machine"
2) GB/t16825.1-2008 test of static uniaxial testing machine part 1: test and calibration of tension and/or pressure testing machine testing force system
3) GB/T 16826-2008 "electric hydraulic servo universal testing machine"
4) JB/T 8612-1997 "electrohydraulic servo universal testing machine"
5) JB9397-2002 technical conditions of tensile fatigue test machine
6) JB9370-1999 "technical conditions of torsion testing machine"Machine frame
The host loading framework consists of two columns, moving beams and workbenches.Compact structure, high rigidity and fast dynamic response.
1) axial bearing capacity:
Maximum dynamic test force: plus or minus 200kN;
Maximum static test force: plus or minus 250kN;
2) torsional bearing capacity:
Maximum dynamic torque: plus or minus 1200N• m;
Maximum static torque: plus or minus 1500N• m;
3) moving beam: hydraulic lifting and hydraulic lock;
4) high rigidity design of the mainframe frame, the axial stiffness of the frame axis is greater than or equal to 1200kN/mm, twisting to 14000kNm/rad (the rigidity is the data of the mesa and the beam 1 meter);The center distance of the vertical column is not less than 600mm;The distance between the two fixtures is not less than 650mm, and the minimum spacing is not greater than 100mm.
5) test space: 600 x 750mm< width x height >;
6) torsional composite sensor (GTM)
Specification: 250kN/ 1500n. m;
Linear: + 0.1%;
Overload: 150%.
Note: install below the active beam.
2.2 hydraulic servo actuator
1) pressure torsion and complex actuator:
The spline actuator is composed of the linear servo actuator and the torsion servo actuator (pendulum actuator).The torsion actuator is installed in the lower end of the linear actuator, and the static torsion force is output with the motion of the linear actuator.
Test frequency: 0.01 ~ 30Hz;
The frequency and displacement (Angle) amplitude are determined by the displacement of the hydraulic servo pump station of the test machine at 150 L/min.The relationship table is as follows:
Frequency rate (Hz) to 0.10 0.20 0.50 1.00 2.00 0.50 10.00 21.50 30.00 1.00
Y to the amplitude (plus or minus mm) 50.00 50.00 50.00 29.91 14.96 6.00 3.00 1.40 1.00 0.60
M to the amplitude (plus or minus °) 50.00 50.00 50.00 50.00 12.50 5.00 2.50 1.10 0.80 0.50
To meet the following requirements under the control of pressure torsion and control:
A. Pull pressure (at the same time maximum) : 21.5Hz sine wave, plus or minus 10kN (plus or minus 0.5mm);Reverse: 21.5 Hz, plus or minus 500 n. m (plus or minus 1 °).
B. Tension: 5Hz sine wave, plus or minus 100kN (plus or minus 6mm);Reverse: 5 hz sine wave, plus or minus 1000 n. m (+ / - 5 °).

ModelHDT-254DHDT-504DHDT-105DHDT-255DHDT-505DHDT-106DHDT-206DMaximum forceDynamic
(kN)±25±50±100±250±500±1000±2000Static
(kN)255010025050010002000Maximum torqueDynamic
(kN)50010002000Static
(kN)50010002000AccuracyForceBetter than ±0.5% of reading (static), better than ±1.0% (dynamic)TorqueBetter than ±0.5% of reading (static), better than ±1.0% (dynamic)ExtensionBetter than ±0.5% of reading (static), better than ±1.0% (dynamic)Displacementbetter than ±1.0%Anglebetter than ±1.0%Dynamic testFrequency (Hz)0.01~50Test waveformSine wave, triangular wave, square wave, oblique wave, trapezoidal wave and custom functionAmplitudeDepending on servo pump flow rateMachineStructureTwo-columnFour-columnActuator travel
(mm)±75(±50)Torque (°)100±5T-slot platform(mm)550x5501200x10001500x1100Grip distance(mm)400600750x600Tensile space
(without grip)500750900
Tag: strain testing machine, dynamic fatigue testing machine