Coatings Shear Fatigue Tester
Category：Medical Device Tester
Introduction
The Coatings Shear Fatigue Tester is a specialized laboratory instrument designed to evaluate the durability and adhesion performance of surface coatings under repeated shear stress. It simulates real-world mechanical loading conditions to measure a coating’s resistance to cracking, delamination, and fatigue over time. This tester is widely used in industries such as automotive, aerospace, electronics, and protective coatings to ensure long-term performance, optimize material formulations, and support quality control in production.
Standard
(1)YY/T 0988.13-2017 (China): Specifies shear fatigue testing protocols for coatings on metallic substrates, including load ratios, frequency, and failure criteria.
(2)ASTM F1160-17 (International): Defines methodologies for evaluating the mechanical performance of implant-coating interfaces under cyclic loading.
Technical Parameters
| Parameter | Specification |
|---|---|
| Max. Shear Force | ±10.000 N (0.01 N resolution) |
| Frequency Range | 0.1–30 Hz (0.01 Hz increments) |
| Load Ratio (R) | 0.1–10 (adjustable) |
| Displacement Range | ±2 mm (0.001 mm resolution) |
| Water Bath Temperature | 37±0.5°C (PT1000 sensor) |
| Data Sampling Rate | 10 kHz (synchronized across 8 channels) |
| Power Requirements | 220V/110V ±10%, 50/60Hz, 1.500W |
| Dimensions (W×D×H) | 500 × 450 × 700 mm |
| Weight | 70 kg (net) / 80 kg (with water bath) |
| Noise Level | <55 dB (A-weighted) |
Features
(1)Electromagnetic Servo Actuator: 10 kN shear load capacity with programmable R=0.1–10 ratios.
(2)Dual Sensor System: 0.01 N resolution shear force transducer + 0.001 mm LVDT displacement sensor.
(3)Dynamic Load Control: 0.1–30 Hz frequency range with sine/square/random waveforms.
(4)Thermal-Mechanical Bath: 37±0.5°C recirculating water system with anti-evaporation design.
(5)High-Resolution Imaging: Built-in 5MP camera system for coating delamination analysis.
(6)Safety Suite: Emergency stop, overload clutches, and water leak detection system.
Maintenance Information
(1)Regularly clean the fixture and load application surfaces to prevent residue buildup.
(2)Lubricate moving parts and guide rails according to the manufacturer’s instructions.
(3)Inspect sensors, load cells, and electrical connections periodically for accuracy and safety.
(4)Calibrate the tester at recommended intervals to ensure precise measurement results.
FAQ
1.What is the purpose of the Coatings Shear Fatigue Tester?
It evaluates the durability and resistance of coatings under repeated shear stress to determine fatigue life and adhesion performance.
2.What types of coatings can be tested?
Paints, polymer coatings, protective films, and other surface treatments applied on metals, plastics, or composites.
3.How are the test results interpreted?
The tester records cycles to failure, crack initiation, or delamination, providing quantitative data on coating fatigue resistance.
4.Can the test parameters be adjusted?
Yes, users can set shear amplitude, frequency, and number of cycles to simulate different service conditions.
5.How often should the tester be calibrated?
Regular calibration is recommended, typically every 6–12 months, to ensure measurement accuracy and repeatability.
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