Weld Spot Fatigue Testing Machine
Category：Torsion Testing Machine
Introduction
The Weld Spot Fatigue Testing Machine is specially designed for mechanical fatigue performance testing of welded joints. It can perform cyclic tensile and fatigue tests on sheet metal spot welds and welded joints.The machine adopts servo precision loading technology to simulate long-term alternating loads under actual working conditions such as vehicles and mechanical equipment. It collects load and cycle data in real time.Equipped with intelligent measurement and control software, it can automatically record the entire process from crack initiation to fracture, generate test curves and reports, and is suitable for quality inspection and research & development of automotive welded parts, hardware welding components, and industrial welded structures.
Applications
The Weld Spot Fatigue Testing Machine is mainly used for fatigue performance testing of welded joints, including sheet metal spot welds, welding seams, and welded structural components. It is widely applied in automotive manufacturing, metal fabrication, machinery manufacturing, welding research, quality inspection departments, and laboratories to evaluate the fatigue strength, durability, and reliability of welded parts under cyclic loading conditions.
Applicable Standards
ISO 14329 — Resistance Welding — Destructive Tests of Welds — Failure Types and Geometric Measurements
ISO 14270 — Resistance Spot Welding — Specimen Dimensions and Procedure for Mechanized Peel Testing
ISO 14272 — Resistance Spot Welding — Specimen Dimensions and Procedure for Cross Tension Testing
ISO 14273 — Resistance Spot Welding — Specimen Dimensions and Procedure for Shear Testing
GB/T 2651 — Tensile Test Method on Welded Joints
GB/T 228.1 — Metallic Materials — Tensile Testing at Room Temperature
GB/T 2611 — General Requirements for Testing Machines
Main Technical Specifications
| Item | Technical Parameters |
|---|---|
| Maximum Test Force | 10 N–500 kN (Customizable) |
| Test Force Resolution | 0.1 N (Constant Resolution Throughout the Range) |
| Accurate Force Measurement Range | 2%FS–100%FS |
| Force Accuracy | ±1%FS |
| Dynamic Force Indication Fluctuation | ≤0.5%FS |
| Test Space | 0–300 mm |
| Displacement Resolution | 0.01 mm |
| Test Waveforms | Sine Wave, Triangle Wave, and Other Customizable Waveforms |
| Amplitude Stroke | 0–100 mm (Adjustable) |
| Test Frequency | 0.1–50 Hz (Adjustable) |
Main Features
Specially designed for fatigue testing of welded joints and spot welds.
Supports cyclic tensile loading and fatigue life testing.
Servo-controlled loading system provides precise and stable force control.
Adjustable test frequency and amplitude to simulate actual working conditions.
Real-time acquisition of load and cycle number data.
Supports multiple test waveforms such as sine wave and triangle wave.
Intelligent control software automatically records test process and generates curves/reports.
High-precision sensors ensure reliable and accurate test results.
Suitable for welded component quality inspection and fatigue reliability evaluation.
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