Channel fatigue testing machine is a specialized testing equipment used to evaluate the fatigue performance of materials, components or structural parts under repeated bending and torsional loads. Its core feature is to use one or more "channels" to fix the two ends of the specimen, and apply alternating stress to the specimen through the reciprocating motion of the channels.
1、 Main technical parameters:
1. Maximum static test force: ± 50kN, accuracy ± 0.5%, accuracy range 2% -100FS;
2. Maximum dynamic test force: ± 50kN; dynamic fluctuation of 2%;
3. Actuator stroke: ± 75mm, indication accuracy ± 0.5% FS;
4. Number of loading channels: single channel;
5. Control mode: fully digital hydraulic servo coordinated control, coordinated loading;
6. Control mode: fully digital force and displacement closed-loop control, with smooth switching of control modes;
7. Input waveform: sine wave, triangle wave, square wave, trapezoid wave, oblique wave, etc;
8. Control frequency range: 0.1-25Hz;
9. Amplitude frequency characteristics: amplitude ± 7mm at 3Hz;
10. Servo pump station: a single 40L servo pump station with a total flow rate of 40L/min, a pressure of 21Mpa, a total motor power of 11KW (maximum 15KW per unit), and a filtration accuracy
of 3 µ;
11. Servo valve flow rate: ≥ 100L/min;
2、 Execution standard: Meet the requirements for pre embedded channel detection
TB/T 3329-2013 Pre embedded Channels in Contact Network Tunnels of Electrified Railways
TB/T 2074-2020 Test Method for Contact Network Components of Electrified Railway
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