HAIDA HD-P811 Shoe Shank Stiffness Tester
| Brand | HAIDA INTERNATIONAL |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Country of Origin | China |
| Model | HAIDA HD-P811 Shoe Shank Stiffness Tester |
| Pricing | Upon Request |
Overview
The HAIDA HD-P811 Shoe Shank Stiffness Tester is a precision mechanical testing instrument engineered for quantitative evaluation of bending rigidity in shoe shanks—critical structural components embedded in the midsole or heel counter of footwear. It operates on the principle of controlled angular deflection under static load, applying a calibrated moment to the shank specimen while measuring the resulting angular displacement via high-resolution rotary encoder and load cell feedback. Designed in strict alignment with ISO 20344:2021 (Personal protective footwear — Test methods), GB/T 20991–2007 (Footwear — Test methods for footwear components), and ASTM F2413–23 (Standard Specification for Performance Requirements for Protective Footwear), the HD-P811 delivers repeatable, traceable stiffness data essential for QC/QA laboratories, footwear R&D departments, and third-party certification bodies.
Key Features
- Motorized dual-axis actuation system enabling programmable angular displacement rates from 0.5°/min to 10°/min, with closed-loop position control for consistent loading profiles.
- Integrated high-accuracy load cell (±0.5% FS) and optical rotary encoder (resolution: 0.01°), ensuring reliable torque and angular measurement across the full test range.
- Dedicated fixture set compliant with ISO 20344 Annex D: includes adjustable clamping jaws, standardized support radius mandrels (R = 25 mm, R = 40 mm), and shank alignment guides to minimize eccentric loading error.
- Robust cast-iron frame with vibration-dampening base, rated for long-term operation under industrial laboratory conditions (IEC 60068-2 environmental compliance).
- Onboard microprocessor controller with intuitive LCD interface; supports manual mode, preset test sequences, and real-time curve display (torque vs. angle).
Sample Compatibility & Compliance
The HD-P811 accommodates flat and contoured shanks made from steel, fiberglass, carbon fiber, thermoplastic composites, and laminated polymer materials, with width ≤ 60 mm and length ≥ 80 mm. Specimen mounting follows standardized orientation per ISO 20344 Clause 6.12.1—shank mounted horizontally with fixed-end support at one end and applied moment at the free end. The system meets mechanical safety requirements per EN 61000-6-2 (EMC immunity) and EN 61000-6-4 (EMC emission), and its calibration traceability aligns with ISO/IEC 17025:2017 through accredited metrology partners. All test reports generated include metadata required for GLP-compliant documentation: operator ID, calibration certificate number, environmental temperature/humidity logs, and raw torque-angle data export.
Software & Data Management
Optional PC-based HAIDA TestSuite™ software (v4.2+) enables advanced test automation, multi-curve overlay analysis, statistical process control (SPC) charting, and PDF/Excel report generation with digital signature support. Software complies with FDA 21 CFR Part 11 requirements—including electronic audit trails, user role-based access control (admin/operator/viewer), and immutable data archiving. Raw ASCII data files (.csv) retain full timestamped resolution (100 Hz sampling) and are compatible with MATLAB, Python (pandas), and Minitab for secondary analysis. Firmware updates are delivered via secure HTTPS channel with SHA-256 integrity verification.
Applications
- Verification of shank stiffness specifications during footwear component supplier qualification (e.g., ISO 20344 Class S1–S5, EN ISO 20345:2022).
- Comparative evaluation of material substitutions (e.g., steel-to-composite transition) for weight reduction without compromising torsional stability.
- Supporting regulatory submissions to EU Notified Bodies (e.g., SATRA, UL) and Chinese CNAS-accredited labs for PPE certification.
- Root-cause analysis of field failures related to excessive sole flexure, heel collapse, or metatarsal fatigue in occupational safety footwear.
- Research into biomechanical coupling between shank rigidity and gait efficiency in ergonomic footwear design.
FAQ
What standards does the HD-P811 directly support?
ISO 20344:2021 Annex D, GB/T 20991–2007, ASTM F2413–23 Section 7.3, and EN ISO 20345:2022 Clause 6.12.
Is calibration certification included with delivery?
Yes—a NIST-traceable calibration certificate (valid for 12 months) is supplied with each unit, covering torque (0–50 N·m) and angular displacement (0–30°) ranges.
Can the HD-P811 be integrated into an existing LIMS environment?
Yes, via optional RS-232/USB-to-Modbus RTU gateway module; HAIDA provides documented API specifications and sample Python scripts for LIMS integration.
What maintenance intervals are recommended?
Load cell zero-point verification every 30 days; full mechanical inspection and encoder recalibration annually by HAIDA-certified service engineers.
Does the system support automated pass/fail judgment against defined stiffness thresholds?
Yes—threshold limits (e.g., “≥2.8 N·m/deg for S3-rated shanks”) can be programmed into test sequences, with visual/audible alerts and automatic flagging in exported reports.
