Elmendorf Tearing Strength Tester
Application
The tester is widely used to assess tear strength and durability in:
Textiles: fabrics, nonwovens, and composite textiles
Plastics: films, sheets, and polymer materials
Rubber: industrial hoses, tire treads, and elastomers
Forensic Analysis: investigation of material failures and defect analysis
Standards
ASTM D1424 (Textile Tear Resistance, Elmendorf Method)
ISO 34 (Plastics and Rubber Tear Methods, Tongue Method)
EN ISO 6383-2 (Rubber Tear Strength)
GB/T 3917.1 (Chinese Textile Standard)
Features
(1) Dual Test Modes:
Elmendorf Test for high-speed single-edge tear
Tongue Test for central slit propagation
(2) Digital Force Gauge: 0.1 N resolution with auto-zero calibration
(3) Manual Operation: Crank pendulum lift with ratchet safety lock; no electricity required
(4) Adjustable Clamping: Anti-slip jaws for secure specimen fixation
(5) Modular Weights: Customize pendulum energy to match material strength
(6) High Accuracy: ±1% full scale, ensuring repeatable results
Parameters
| Parameter | Specifications |
|---|---|
| Pendulum Range | 160–640 g (9 selectable weights) |
| Clamping Force | 50±5 N (adjustable via screw mechanism) |
| Tear Speed | 1.2±0.2 m/s (controlled by pendulum drop height) |
| Measurement Accuracy | ±1% FS (ISO 376 standard) |
| Sample Size | 63×127 mm (Elmendorf), 50×200 mm (Tongue) |
| Dimensions (L×W×H) | 800×400×1200 mm |
| Capacity | 50–5000 mN (adjustable via pendulum weights) |
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