Fatigue test of metallic materials

Fatigue testing can predict the fatigue strength of materials or components under alternating loads. Generally, this type of test cycle is long and the equipment required is relatively complex. However, since general mechanical tests such as static tension, hardness and fatigue tests are unable to provide the performance of materials under repeated alternating loads, fatigue testing is necessary for important components.
Some common test methods for fatigue testing of metal materials usually include single-point fatigue testing method, lifting method, high-frequency vibration testing method, ultrasonic fatigue testing method, infrared thermal imaging technology fatigue testing method, etc.
Zhongke Testing Reliability Experiment Center has the capabilities of environmental testing and reliability performance testing of various metal materials, and provides professional fatigue testing services for metal materials.

Welds, structural parts, transmission components, oil pipelines, pressure vessels, valves, flanges, carbon steel, stainless steel materials, elevators, hoisting equipment, rail vehicles, wind power energy and other metal materials and products and parts subjected to dynamic loads and alternating stress conditions.

1. High-frequency vibration fatigue test method: The high-frequency vibration test uses test equipment to generate alternating inertial forces with characteristics of a cyclic load frequency of about 1000Hz to act on the fatigue specimen, which can meet the fatigue performance research of service metal materials under high-frequency, low-amplitude, and high-cycle environmental conditions.
2. Single-point fatigue test method: This method can approximately measure the fatigue curve and roughly estimate the fatigue limit when the number of specimens is limited. It is suitable for metal material components serving under rotational bending load conditions in air, room temperature, and high temperature corrosion.
3. Lift method fatigue test method: Lift method fatigue test is a relatively common method to obtain the fatigue limit of metal materials or structures. On the basis of conventional fatigue test methods to determine fatigue strength or when the fatigue strength of materials or structures with a specified life cannot be measured directly through tests, lift method fatigue tests are generally used to indirectly measure fatigue strength.
4. Infrared thermal imaging technology fatigue test method: In order to shorten the test time and reduce the test cost, the energy method has become one of the important methods for fatigue test research.
5. Ultrasonic fatigue test method: Ultrasonic fatigue test is an accelerated resonance fatigue test method that can be carried out under different load characteristics, different environments and temperatures.

GB/T 15248-2008 Axial constant amplitude low cycle fatigue test method for metallic materials
GB/T 3075-2021 Metallic materials - Fatigue testing - Axial force control method
GB/T 33812-2017 Metallic materials - Fatigue testing - Strain controlled thermomechanical fatigue test method
GB/T 37306.1-2019 Metallic materials - Fatigue testing - Variable amplitude fatigue testing - Part 1: General principles, test methods and reporting requirements
GB/T 38822-2020 Metallic materials Creep-fatigue test method
GB/T 40410-2021 Metallic materials Multi-axial fatigue testing Axial-torsional strain control method
GB/T 6398-2017 Metallic materials - Fatigue testing - Fatigue crack growth method
ISO 12108 Metallic materials - Fatigue testing - Fatigue crack growth method
ISO 12107 Metallic materials Fatigue testing Statistical schemes and data analysis methods
ISO 1352 Steel Torsional stress fatigue test method
ISO 1143 Metals Rotational bending fatigue test method
0 ISO 12106 Metallic materials – Fatigue testing – Axial strain control method
1 ISO 1099 Metallic materials – Fatigue testing – Axial force control method
2 ASTM E2207-02 Strain-controlled axial torsional fatigue test method for thin-walled tubes
3 ASTM E1949-03 Room temperature fatigue life test method for bonded metal resistance strain gauges
4 ASTM E796-94 Metal foil ductility test method
5 ASTM E739-91 Linear or linearized stress-life (S-N) and strain-life (e-N)