Specialized testing equipment that applies repeated loads to materials and components to evaluate fatigue failure characteristics. Includes rotating bending fatigue testing machines, axial load fatigue testing machines, torsional fatigue testing machines, and high-frequency fatigue testing machines, measuring fatigue life and fatigue limits of metal materials, resin materials, welded joints, and mechanical components. Essential for design and quality control of automotive parts, aircraft components, and mechanical parts, capable of S-N curve generation and fatigue crack propagation testing. Unlike static tensile and compression testing machines, characterized by long-term durability evaluation through dynamic repeated loading, enabling high-precision testing compliant with fatigue testing standards such as JIS Z 2273 and ASTM D7791.