Electro-hydraulic Servo Steel Bar Fatigue Testing Machine

lMain Functions: Suitable for axial fatigue testing of steel bars with high flexibility!

lAxial fatigue testing of steel bars

nSetting frequency: 0.001Hz-30Hz(50Hz) can be set arbitrarily

nMaximum number of tests can be set to 10⁸ times

nOne conventional fatigue test (2 million times) takes about 22.222 hours at 25Hz

lAxial tension-compression fatigue testing of metal and non-metal materials (S-N curve)

lRelated fatigue testing according to the technical specification for mechanical connection of steel bars (with additional fixtures)

lAxial cyclic loading test of materials and parts

lUltimate failure test of material specimens, parts or assemblies

Main console

lOperate the rise and fall of the main beam, and the clamping and loosening of the upper and lower fixtures.

lIntroduce hydraulic oil circuit from the main oil source.

lBuilt-in logic control valve group, built-in pressure regulating device.

lBeam lifting pressure adjustable 1-20Mpa.

lFixture pressure adjustable 1-45Mpa.

Auxiliary components

lSignal and power cables

nSignal cables: Displacement sensor, load sensor and servo valve cables, using multi-core cables, length 6 meters;

nPower cables: From oil source to laboratory power box, using three-phase five-wire system, length 3 meters.

lHydraulic pipelines from oil source to main unit 5 meters.

lTest fixtures:

nHydraulic fixtures:

uCircular specimen jaw clamping range φ6-φ12, φ12-φ18, φ18-φ24; Rectangular specimen jaw clamping range T0-8, T8-15, T15-22.

nDimensions of ribbed steel bar specimens:

uGrade HRB400\HRB500\HRB600;

uDiameter range φ6-φ22;

uLength range: Clamping assembly about 120 + parallel length (140mm-310mm);

uBoth ends of the specimen are ground flat and chamfered;

lRandom tools

nHexagon wrenches 1.5-10, 12, 19;

nFlat and cross screwdrivers φ5×150;

nHook spanner 68-72;

lFlushing kit.

GB/T28900-2022 "Test methods for steel bars for reinforced concrete"

一、Main technical indicators