Tuofeng TFW-277 Microcomputer-Controlled Electronic Universal Testing Machine
| Brand | Tuofeng |
|---|---|
| Model | TFW-277 |
| Type | Electromechanical Universal Testing Machine |
| Max Test Load | 200 kN |
| Accuracy Class | 0.5 |
| Effective Force Range | 0.2–100% of Full Scale |
| Force Measurement Accuracy | ±0.005% of Reading |
| Load Resolution | 1 part in ±500,000 full-scale codes (no range switching) |
| Drive System | Imported Servo Motor with Worm Gear Reducer |
| Lead Screw | High-Precision Ball Screw |
| Effective Test Width | 600 mm (customizable) |
| Stroke | 800 mm (height-adjustable) |
| Speed Range | 0.001–500 mm/min (infinitely variable) |
| Displacement Measurement | Optical Encoder |
| Displacement Accuracy | ±0.005% of Reading |
| Strain Measurement | Optional Extensometer or Large-Deformation Gauge |
| Safety Protection | Electronic Limit Switches, Emergency Stop, Overload Protection (10% above capacity) |
| Software | Windows-Based, Multi-Language (EN/ZH-TR/ZH-S), ASTM/ISO/GB/JIS/DIN/BS Compliant |
| Standards Compliance | GB/T 16491–2008, JJG 475–2008, ISO 5893, ASTM E4, ASTM E8, ASTM D638, ASTM D790, ASTM D3039 |
Overview
The Tuofeng TFW-277 is a high-precision, microcomputer-controlled electromechanical universal testing machine engineered for static mechanical property characterization of metallic, polymeric, composite, and elastomeric materials. It operates on the principle of controlled displacement actuation via a servo-driven ball screw system, enabling precise force application and real-time measurement of load, displacement, and strain under standardized quasi-static conditions. Designed to meet international metrological and regulatory requirements—including ISO 5893, ASTM E4 (load verification), ASTM E8/E21 (tensile/compression testing of metals), ASTM D638/D790 (plastics), and GB/T 16491–2008—the TFW-277 delivers traceable, repeatable data suitable for quality control, R&D validation, and regulatory submissions. Its 0.5-class accuracy rating ensures compliance with GLP/GMP environments where instrument qualification, calibration traceability, and audit-ready documentation are mandatory.
Key Features
- High-resolution force sensing with ±0.005% reading accuracy and 1:500,000 internal resolution—maintained across the full 0.2–100% test range without auto-ranging or hardware switching.
- Imported servo motor coupled to a hardened worm gear reducer and preloaded ball screw assembly, ensuring smooth, backlash-free motion and long-term mechanical stability.
- Dual-speed programmable crosshead control (fast return + fine positioning), supporting both automated test sequences and manual intervention during setup or failure analysis.
- Integrated multi-level safety architecture: electronic end-limit switches, hardware emergency stop circuitry, and software-enforced overload cutoff at 110% of rated capacity.
- Modular extensometry support—compatible with clip-on axial extensometers (for modulus and yield determination) and non-contact video extensometers (for large-strain or brittle material testing).
- Robust structural frame fabricated from high-rigidity steel, with reinforced base and column design minimizing deflection during high-load compression or flexural tests.
Sample Compatibility & Compliance
The TFW-277 accommodates specimens ranging from thin polymer films (<0.1 mm thickness) to structural steel coupons (up to 60 mm wide × 25 mm thick), enabled by customizable jaw geometries (pneumatic, wedge-action, or hydraulic grips), bend fixtures (3-point/4-point), shear plates, peel fixtures, and puncture probes. All mechanical configurations conform to dimensional and alignment tolerances specified in ISO 5893 Annex A and ASTM E1012 for system rigidity verification. The system is validated per JJG 475–2008 (Chinese national verification regulation) and supports full traceability to NIST-traceable force standards. Calibration certificates include uncertainty budgets aligned with ISO/IEC 17025 requirements. Test reports embed metadata compliant with FDA 21 CFR Part 11 when configured with electronic signature and audit trail modules.
Software & Data Management
Tuofeng’s proprietary TESTMaster v5.2 software runs natively on Windows 10/11 (64-bit) and provides full configurability for multi-step test protocols—including preload conditioning, ramp-hold sequences, cyclic loading, and creep/stress relaxation. Real-time visualization includes synchronized dual-axis plots (e.g., stress–strain, load–displacement, time–elongation), with on-the-fly unit conversion (N/kN/lbf, mm/in, MPa/psi) and automatic parameter extraction (UTS, YS, E-modulus, % elongation, % reduction in area, secant modulus, tangent modulus). Raw data exports to CSV, Excel, or XML formats; graphical reports support PDF/XPS generation with embedded calibration ID, operator ID, environmental timestamp, and test standard reference. Audit trails record all user actions, parameter changes, and calibration events. The platform supports optional IQ/OQ/PQ templates and integrates with LIMS via OPC UA or HL7 interfaces.
Applications
- Mechanical validation of aerospace-grade aluminum alloys (per AMS 4027) and titanium fasteners (ASTM F568M) under tensile and shear loading.
- Quality assurance of insulated power cables (IEC 60811, GB/T 2951), including jacket tensile strength, conductor pull-out resistance, and insulation tear resistance.
- Characterization of thermoplastic composites (e.g., carbon-fiber-reinforced PEEK) for automotive lightweighting programs—measuring interlaminar shear strength (ASTM D2344) and flexural stiffness (ASTM D7264).
- Rubber compound development per ASTM D412 (tensile properties) and ASTM D395 (compression set), including hysteresis loop analysis.
- Medical device component testing (ISO 14243-1 for femoral stem fatigue simulation; ASTM F2118 for bone cement compression).
- Powder metallurgy sintered parts evaluation (green strength, sintered density correlation, transverse rupture strength per ASTM B939).
FAQ
What standards does the TFW-277 support out-of-the-box?
The system ships with preloaded test methods for ASTM D638, ASTM D790, ASTM E8, ISO 6892-1, GB/T 228.1, and JIS Z2241. Custom method creation is supported via drag-and-drop sequence editor.
Can the machine perform cyclic or fatigue testing?
While primarily designed for static quasi-static tests, the TFW-277 supports low-cycle fatigue (LCF) up to 5 Hz with optional high-speed control firmware and closed-loop strain control—subject to fixture resonance limitations and specimen heating constraints.
Is third-party calibration certification available?
Yes. Tuofeng partners with CNAS-accredited calibration laboratories in Shanghai and Singapore to provide ISO/IEC 17025-compliant certificates with full uncertainty analysis and NIST-traceable references.
How is software validation handled for regulated environments?
TESTMaster v5.2 includes a 21 CFR Part 11 compliance package: role-based access control, biometric or PKI-based electronic signatures, immutable audit logs, and configurable retention policies—all documented in the supplied Validation Support Package (VSP).
What is the warranty and service coverage?
Standard coverage includes 24 months parts-and-labor warranty, remote diagnostics, and lifetime software upgrades. On-site preventive maintenance contracts are available with SLA-governed response times (next-business-day for Tier-1 regions).
