Diaphragm Coupling Tension-Bending-Torsion Fatigue Testing Machine

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I. Equipment Introduction

The coupling diaphragm fatigue testing machine is used to test the fatigue performance of coupling diaphragms under the combined action of tension, bending, and torsion dynamic loads. It evaluates the working life of coupling diaphragms. This testing machine can simulate the complex load conditions that couplings experience in actual working environments, thereby assessing their fatigue life and reliability.

II. Functional Features

1. Loading Capability: Capable of performing composite fatigue tests with any combination of tension, bending, and torsion, simulating the complex stress states of diaphragms in actual working conditions to the greatest extent.

2. Precision Control: Utilizes servo control technology and high-precision sensors, with control accuracy for load, torque, and displacement reaching 0.1% FS, ensuring the reliability of test data.

3. Data Processing: Dedicated software automatically collects and analyzes data, generating various curves and reports, improving test efficiency and the accuracy of data processing.

III. Technical Parameters

Horizontal tensile force load ≥300kN,

Vertical bending force load ≥±10kN, accuracy 0.5%,

Rotational swing torque force ≥±1000N.m, accuracy 0.1°,

Swing angle ±45°,

Relative error of torque indication: ≤±1.0%

Vertical bending displacement: ±50mm,

Recording time: ≥24h,

Loading waveforms: Supports sine wave, square wave, triangular wave, and custom waveforms

Frequency: 4Hz,

Power supply: AC 220V±10%

IV. Test Procedure

4.1 Sample Preparation

Select coupling diaphragm samples, measure their dimensions, and clean the surfaces.

4.2 Sample Installation

Connect the diaphragm to the front flange and rear flange using bolts. Use a torque wrench when tightening the bolts to ensure reliable connection.

4.3 Parameter Setting

Open the control software, enter the test parameter setting interface, and select the test type (e.g., tension-torsion composite fatigue, bending-torsion composite fatigue, etc.). Input force values and set parameters.

4.4 Test Operation

Click the "Start" button in the software. The equipment begins operation according to the set parameters, applying the corresponding loads. When the cycle count reaches the preset value or the diaphragm fractures (load suddenly drops below 50% of the set value), the equipment automatically stops and records data such as the cycle count at shutdown and the final load.

4.5 Data Processing and Analysis

After the test, the software automatically saves test data (including time, load, torque, displacement, strain, etc.), generates fatigue life curves (S-N curves), load-displacement cycle curves, and outputs test reports.