1. Overview and reference standards of HFT series high frequency fatigue testing machine

1 Overview

1) The electromagnetic resonance high-frequency fatigue testing machine works by using the principle of mechanical system resonance. It is widely used to test the fatigue fracture resistance of various metal materials, test KIC value, S-N curve, etc.; equipped with corresponding fixtures, it is widely used To test the fatigue life of various components (such as plates, gears, crankshafts, bolts, chains, connecting rods, compact tension, valves, etc.), it can complete symmetric fatigue tests, asymmetric fatigue tests, one-way pulsation fatigue tests, A wide range of fatigue tests such as block spectrum fatigue test, modulation control fatigue test, high and low temperature fatigue test, three-point bending, four-point bending, and torsion.

2) Electromagnetic resonance high frequency fatigue testing machine has the characteristics of simple structure, convenient operation, high efficiency, and low energy consumption among various types of fatigue testing machines. Therefore, it is widely used in national defense scientific research, universities and colleges. Industrial production and other sectors. At present, many universities, scientific research departments and industrial and mining enterprises use electromagnetic resonance high-frequency fatigue testing machines to conduct fracture toughness tests, test the crack growth rate of metal materials and the threshold value of materials. With the development of microelectronics and computer technology, as well as testing With the improvement of the means, its use function is constantly expanding.

2. Reference standards

1) Verification Regulation of JG556-2011 "Axial Force Fatigue Testing Machine"

2) GB/T2611, GB/T3075, HB5287, ASTM E647, ASTM E399 standards, etc.

3) The equipment indicators and functions fully meet the requirements of ASTM, ISO, GB and other standards or test methods, and fully meet the requirements of the domestic and foreign certification systems of various laboratories that have been developed in China.

2. Features of HFT series high frequency fatigue testing machine

1. The operation is simple, convenient, and reliable;

2. It can display test parameters in real time, such as average load, peak load, resonance frequency and cycle fatigue time. 

3. Extensive and powerful test functions: conventional fatigue test, program-controlled load test, seat frequency spectrum test, alternating load envelope test (waveform is set to sine wave, triangle wave, square wave). 

4. Multiple test parameter setting modes: average load value, alternating load peak value as the default mode, maximum load, stress ratio, maximum and minimum load as the default mode, and different load units are allowed . 

5. Rich data analysis and processing functions; 

6. Automatically store various test data, print test reports and test curves, complete "SN curve" data processing and curve drawing, and draw frequency-time curves and load-time curves.

7. Safety function: overload protection, over current protection, set the upper and lower limits of load protection. After the test is completed or in case of emergency, the machine can stop itself.

3. Specification parameter table of HFT series high frequency fatigue testing machine