Intervertebral Fusion Cages Shear Fatigue Tester

Standard

YY/T 0959-2014 (China): Specifies shear fatigue testing protocols for intervertebral fusion devices, including load ratios, frequency, and failure criteria.

ASTM F2077-17 (International): Defines methodologies for evaluating the fatigue strength of intervertebral body fusion devices under shear loading.

ISO 12189-1: Additional compliance for mechanical testing of spinal implant components.

Product Advantages

Multi-Angle Shear Control: Dual-axis actuator system provides 0°–45° adjustable shear plane orientation.

Dynamic Load Precision: Electromagnetic servo motor maintains R=0.1 load ratio with ±0.05% accuracy.

5 Million Cycle Endurance: Proven capability to complete YY/T 0959’s 5×10⁶-cycle fatigue test without calibration drift.

Real-Time Deformation Monitoring: 3D digital image correlation (DIC) tracks micro-strains during testing.

Biorelevant Environment: Temperature-controlled (37±1°C) lubrication bath with 20±2 g/L protein concentration.

Modular Test Chambers: Quick-swap pods for simulated physiological (-20°C to +50°C) and corrosive environments.

Product Features

Electromagnetic Servo Motor: 10 kN axial/shear force capacity with programmable load ratios (R=0.1–10).

Adjustable Shear Plane: Motorized 0°–45° tilt mechanism with laser alignment system.

Dynamic Load Control: 0.1–10 Hz frequency range with programmable waveforms (sine, square, random, custom).

Thermal-Mechanical Chamber: ±0.3°C temperature stability with integrated humidity control (10–95% RH).

High-Resolution Imaging: Built-in 5MP camera system for crack propagation analysis.

Safety System: Emergency stop, overload clutches, and laser-based specimen breakage detection.

Technical Parameters

Parameter	Specification
Max. Shear Force	±10.000 N (100 N resolution)
Shear Plane Adjustment	0°–45° (0.1° resolution)
Frequency Range	0.1–10 Hz (0.01 Hz increments)
Load Ratio (R)	0.1–10 (adjustable)
Temperature Control	-20°C to +50°C (PT1000 sensors)
Humidity Control	10–95% RH (non-condensing)
Data Acquisition	100 kHz sampling rate (16-bit resolution)
Power Requirements	220V/110V ±10%, 50/60Hz, 2.500W
Dimensions (W×D×H)	1.800 × 1.200 × 2.100 mm
Weight	1.050 kg (including environmental chamber)
Noise Level	<65 dB (A-weighted)

Accessories

Spinal Implant Fixture Kit:

Self-centering collet system (8–20 mm implant diameter compatibility)

Adjustable shear blades with diamond-like carbon (DLC) coating

Thermal-Mechanical Chamber:

20L capacity with rapid cooling/heating (15°C/min)

316L stainless steel interior with HEPA filtration

ShearMaster Pro Software:

Automated S-N curve generation and fatigue limit calculation

21 CFR Part 11-compliant audit trail with blockchain timestamping

Remote monitoring via iOS/Android app

Operator Kit:

Calibrated torque wrench set (1–50 Nm)

Specimen alignment gauges (ASTM F2077 compliant)

Calibration Bundle:

NIST-traceable force calibration weights

Angular encoder verification tool

Safety Kit:

Laser safety curtains

Acoustic enclosure with 30 dB noise reduction

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