Helmet Surface Shear Force and Friction of Protrusions Tester
The Helmet Surface Shear Force and Friction of Protrusions Tester is a specialized testing system designed to evaluate the surface safety performance of helmets under impact and friction conditions. It simulates real-world collision scenarios and abrasion interactions to assess how helmet protrusions behave under shear forces and surface contact.
By integrating impact testing and friction testing into one platform, the system ensures that helmets meet international safety standards for structural integrity, surface smoothness, and user protection.
Standard
ECE R22.06 (UN/ECE regulation for motorcycle helmet safety and protrusion resistance)
GB 811-2022 (China’s national standard for helmet structural integrity and surface friction)
ISO 10256-5 (Headgear testing – Protrusion shear resistance and abrasion performance)
Technical Parameters
| Specification | Details |
|---|---|
| Impact Mass | 15.0 kg (500 mm free-fall) |
| Loading Mechanism | 400 N electromagnetic actuator |
| Friction Media | Sandpaper (P80–P400), shear blocks |
| Headform Sizes | EN 960 S/M/L (54 / 58 / 62 cm) |
| Force Resolution | ±0.5 N (shear), ±1 N (impact) |
| Power Supply | 220V / 50Hz, 800 W |
| Dimensions | 1500 × 800 × 2000 mm |
| Weight | 250 kg (net) / 300 kg (with accessories) |
Features
Shear Force Testing
Impact System:
15kg stainless steel mass: 500mm free-fall height (±1mm accuracy).
Electromagnetic release: Ensures consistent impact velocity (3.13 m/s).
Headform Assembly:
Biofidelic headform: EN 960-compliant with aluminum alloy skeleton.
Adjustable neck brace: Simulates natural head movement during testing.
Friction Testing
Abrasion Module:
Horizontal guide frame: Holds sandpaper/shear blocks for linear motion.
400N loading cell: Applies constant force (±0.5N accuracy).
Control System:
HMI Interface: 10.1" touchscreen with live force/displacement curves.
PID Force Control: Maintains 400N ±1% during friction cycles.
Safety Systems
Interlocked enclosure: Prevents access during testing (Category 3 safety rating).
Auto-eject mechanism: Retracts headform if misalignment detected.
Accessories
Headform Kit – EN 960 S/M/L sizes with aluminum alloy skeleton.
Friction Media Set – Sandpaper (P80–P400 grit) and shear blocks.
Calibration Tools – NIST-traceable force gauge and laser interferometer.
Software License – Lifetime access to ShearFriction Pro (cloud-connected with API for integration with QMS systems).
Installation & Training – On-site setup by certified engineers + 24hrs virtual training for operators.
Documentation – Multilingual user manual and ECE R22.06 compliance guide.
FAQ
(1) What does this tester evaluate?
It measures helmet surface shear resistance and friction performance, especially for protrusions that may affect safety during impact.
(2) Which helmets can be tested?
Motorcycle helmets, sports helmets, and protective headgear compliant with EN 960 headform sizes.
(3) How is test accuracy ensured?
Each system undergoes strict factory inspection and performance verification before delivery, ensuring accurate, stable, and repeatable measurement data.
(4) Can different friction materials be used?
Yes, the system supports interchangeable sandpaper (P80–P400) and shear blocks for various testing conditions.
(5) Is the system suitable for certification testing?
Yes, it fully supports ECE R22.06, GB 811-2022, and ISO 10256-5 standards, making it suitable for compliance and certification testing.
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