Tuofeng TFW-176 Microcomputer-Controlled Electronic Universal Testing Machine
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Electromechanical Universal Testing Machine |
| Model | TFW-176 |
| Compliance | GB/T 16491-2008, JJG 475-2008, ASTM E4, ISO 7500-1, DIN 51221, JIS B 7721 |
| Accuracy Class | 0.5 |
| Force Range | 0.2–100% of Full Scale |
| Force Measurement Accuracy | ±0.005% of reading |
| Resolution | 1 part in ±500,000 full-scale load (single-range, no switching) |
| Drive System | Imported servo motor with precision worm-gear reducer |
| Lead Screw | High-accuracy preloaded ball screw |
| Effective Test Width | 400 mm (customizable up to 600 mm) |
| Max Stroke | 800 mm (extendable) |
| Speed Range | 0.001–500 mm/min (infinitely variable, programmable) |
| Displacement Measurement | Optical encoder, accuracy ±0.005% of reading |
| Strain Measurement | Optional extensometer (clip-on or video-based) or large-deformation transducer, accuracy ±0.005% of reading |
| Safety Protection | Dual electronic limit switches, emergency stop button, overload protection (>110% FS), automatic return on completion |
| Crosshead Control | Dual-speed (fast/slow) motorized vertical adjustment with jog function |
| Return Mode | Programmable auto-return at maximum speed post-test |
| Fixture Customization | Application-specific grips (tensile, compression, bend, peel, shear, tear) available per ASTM/ISO specimen geometry |
| Dimensions (W×D×H) | 780 × 560 × 1700 mm |
| Power Supply | 220 V AC, 750 W |
| Net Weight | ~280 kg |
Overview
The Tuofeng TFW-176 Microcomputer-Controlled Electronic Universal Testing Machine is a high-precision electromechanical system engineered for static mechanical property characterization of metallic, polymeric, ceramic, composite, and elastomeric materials. Based on the fundamental principles of uniaxial force–displacement transduction and controlled displacement-rate actuation, it delivers traceable, repeatable measurements in accordance with international metrological standards. Its modular architecture integrates a rigid dual-column frame, high-resolution force transduction (±0.005% FS), sub-micron displacement resolution (1/500,000 FS), and closed-loop servo control—enabling compliance with ISO 7500-1 Class 0.5 verification requirements and supporting GLP/GMP-aligned test execution in regulated environments.
Key Features
- Class 0.5 force measurement accuracy per ISO 7500-1 and GB/T 16491-2008, validated across 0.2–100% of full-scale capacity (5 kN standard configuration)
- Single-range, no-switching load cell resolution of 1 part in ±500,000—ensuring consistent sensitivity from low-force peel tests to high-load tensile rupture
- Precision preloaded ball screw drive coupled with imported servo motor and worm-gear reduction for smooth, backlash-free motion control
- Programmable test speed range from 0.001 to 500 mm/min, enabling quasi-static creep, strain-rate-dependent plasticity, and dynamic preload protocols
- Dual-mode position sensing: optical encoder for crosshead displacement (±0.005% reading) and optional calibrated extensometers for true strain measurement (ASTM E83, ISO 9513)
- Integrated safety architecture: hardware-based emergency stop, dual electronic end-limit switches, real-time overload cutoff (>110% FS), and automatic return-to-start functionality
- Motorized crosshead with fast/slow jog control and programmable return velocity—reducing operator intervention and cycle time variability
Sample Compatibility & Compliance
The TFW-176 accommodates standardized and non-standard specimens per ASTM D638 (plastics), ASTM E8/E9 (metals), ISO 6892-1 (tensile), ISO 178 (flexure), ISO 14890 (optical fibers), ASTM D1876 (peel), ASTM D624 (tear), and EN 14354 (wood-based panels). Fixture sets—including wedge-action tensile grips, compression platens, 3-/4-point bend fixtures, pneumatic peel clamps, and shear adapters—are designed to meet dimensional tolerances specified in ISO 2041 and ASTM E1012. The system complies with national verification regulation JJG 475-2008 and satisfies audit requirements for ISO/IEC 17025 accredited laboratories. All force calibration certificates are NIST-traceable, and software event logs support 21 CFR Part 11-compliant audit trails when configured with electronic signature modules.
Software & Data Management
Operating under Windows OS, the proprietary Tuofeng TestSuite v5.x provides ISO/IEC 17025-aligned test method definition, real-time multi-curve visualization (force–time, stress–strain, displacement–time, force–extension), and automated parameter derivation—including tensile strength, yield point (0.2% offset), Young’s modulus, elongation at break, compressive yield, flexural modulus, peel adhesion, and tear resistance. Units are freely convertible between SI, imperial, and legacy systems (e.g., MPa ↔ psi, mm ↔ in). Raw data exports to CSV, XML, and PDF formats; batch reporting supports statistical summary (mean, min, max, SD) across up to 999 specimens. The software architecture permits user-defined calculation templates, curve overlay comparison, and secure role-based access control—making it suitable for shared-lab deployments requiring SOP enforcement and version-controlled method libraries.
Applications
Validated use cases span R&D, QC, and regulatory submission workflows: tensile testing of aerospace aluminum alloys (AMS 4027), compression analysis of biomedical polymer scaffolds (ASTM F2150), flexural evaluation of fiber-reinforced concrete (ASTM C78), peel strength quantification of medical device adhesive laminates (ISO 10993-17), tear propagation resistance in synthetic rubber (ASTM D624), and creep compliance mapping of thermoplastic composites (ISO 899-1). The system serves as a primary test platform in Tier-1 automotive supply chains (IATF 16949), pharmaceutical packaging validation (USP ), and construction material certification (EN 10002-1). Its modularity supports integration into automated test cells via Ethernet/IP or Modbus TCP interfaces.
FAQ
What international standards does the TFW-176 support out-of-the-box?
The system includes preconfigured test methods for ASTM E4, ISO 7500-1, GB/T 16491-2008, JJG 475-2008, DIN 51221, and JIS B 7721—with customizable templates for other standards upon request.
Is the software compliant with FDA 21 CFR Part 11 requirements?
Yes—when deployed with optional electronic signature and audit trail modules, the software meets ALCOA+ data integrity principles and supports full Part 11 compliance including role-based access, immutable logs, and electronic record retention.
Can the machine be upgraded to higher load capacities?
The TFW-176 base platform is rated for 5 kN; however, Tuofeng offers mechanically compatible variants (TFW-10S to TFW-200S) with identical software, control architecture, and compliance documentation—enabling seamless capacity scaling without revalidation overhead.
What strain measurement options are available beyond the standard encoder?
Clip-on axial extensometers (ASTM E83 Class I/II), video extensometry (non-contact, ISO 9513 Class 1), and large-deformation transducers (for rubber/elastomer elongation >1000%) are factory-integrated and auto-recognized by the software.
Does the system include calibration documentation and traceability?
Each unit ships with a NIST-traceable force calibration certificate, displacement verification report, and ISO/IEC 17025-accredited calibration schedule—valid for 12 months under normal operating conditions.
