Tuofeng TFW-279 Microcomputer-Controlled Electronic Universal Testing Machine
| Brand | Tuofeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Electromechanical Universal Testing Machine |
| Model | TFW-279 |
| Force Capacity Options | 5–200 kN |
| Accuracy Class | 0.5 |
| Effective Force Range | 0.2%–100% of full scale |
| Load Measurement Accuracy | ±0.005% of reading |
| Resolution | 1 part in ±500,000 codes (full-scale, no range switching) |
| Drive System | Imported servo motor with precision worm-gear reducer |
| Lead Screw | High-precision preloaded ball screw |
| Effective Test Width | 400–600 mm (customizable) |
| Maximum Travel | 800 mm (extendable) |
| Speed Range | 0.001–500 mm/min (infinitely variable) |
| Displacement Measurement | Optical encoder, accuracy ±0.005% of reading |
| Strain Measurement | Optional extensometer or large-deformation sensor, accuracy ±0.005% of reading |
| Safety Protection | Electronic limit switches, emergency stop, overload cutoff (>110% FS) |
| Software | Windows-based, multilingual (EN/ZH), compliant with ASTM E4, ISO 7500-1, GB/T 16491–2008, JJG 475–2008 |
Overview
The Tuofeng TFW-279 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 axial force application and displacement-controlled deformation, it operates under closed-loop feedback control to deliver repeatable, traceable, and standards-compliant test results. The machine integrates a rigid dual-column frame, high-resolution load cell, optical displacement encoder, and programmable servo drive—enabling precise execution of uniaxial tensile, compression, flexure, shear, tear, peel, and puncture tests per internationally recognized methodologies. Its modular architecture supports rapid tooling changes and optional strain measurement subsystems, making it suitable for both routine quality control and advanced materials R&D environments.
Key Features
- 0.5-class accuracy certified per GB/T 16491–2008 and ISO 7500-1:2018, ensuring metrological reliability across the full force range (0.2–100% FS)
- True high-resolution measurement: 1/±500,000 internal code resolution, maintained uniformly without range switching or recalibration
- Dual-speed automated crosshead movement with jog control and programmable return-to-start functionality post-test
- Integrated safety triad: electronic travel limits, hardware emergency stop circuitry, and real-time overload protection (>110% FS)
- Modular fixture interface compatible with standardized grips (pneumatic, wedge, vise), bending fixtures, peel jigs, and custom tooling per ASTM D638, D790, D1876, ISO 6892-1, and GB/T 228.1
- Thermally stable load cell and low-drift signal conditioning electronics for long-duration hold and creep testing
Sample Compatibility & Compliance
The TFW-279 accommodates specimens ranging from thin films (<0.1 mm) to structural metal coupons (up to 600 mm wide × 800 mm stroke), including ASTM-standard dog-bone, dumbbell, rectangular, and cylindrical geometries. It supports direct attachment of clip-on extensometers (e.g., 10–50 mm gauge length, ±0.5 µm resolution) and non-contact video extensometry for brittle or high-temperature applications. All test protocols align with regulatory and industrial compliance frameworks: ASTM E4 (load verification), ASTM E8/E21 (tensile/creep), ISO 527/604/178 (plastics), GB/T 228.1 (metal tensile), and JIS Z2241. The system meets GLP audit requirements via full test log archiving, operator ID tagging, and timestamped parameter locking—supporting FDA 21 CFR Part 11 readiness when paired with optional electronic signature modules.
Software & Data Management
The embedded Windows-based software provides deterministic test control and comprehensive data handling. Users define test sequences using multiple control modes—including constant rate of extension (CRE), constant load ramping, stress relaxation, and dwell-hold profiles—with up to 100-step programmability. Real-time plotting supports simultaneous display of up to four axes (e.g., stress–strain, load–time, displacement–time, or load–extension). Calculated outputs include ultimate tensile strength, yield point (0.2% offset), Young’s modulus, Poisson’s ratio, fracture toughness indices (R-curve), and adhesion energy (peel/tear). All raw data are stored in ASCII-compatible .csv and proprietary binary formats; reports comply with ISO/IEC 17025 documentation standards. Software permits curve superposition for comparative analysis, statistical summary (mean ± SD, min/max), batch export, and PDF/Excel report generation. Firmware and application updates are provided free of charge throughout the instrument’s service life.
Applications
This system serves as a core characterization platform across diverse sectors: aerospace (composite laminate interlaminar shear, titanium alloy fatigue pre-screening), automotive (rubber bushing compression set, polymer bumper impact simulation), medical device manufacturing (suture tensile strength, balloon catheter burst pressure), construction (rebar yield behavior, concrete compressive modulus), and academic research (nanocomposite reinforcement efficiency, hydrogel viscoelastic hysteresis). It is routinely deployed in ISO/IEC 17025-accredited laboratories for third-party certification, supplier qualification audits, and failure analysis investigations where traceability, repeatability, and inter-laboratory comparability are mandatory.
FAQ
What international standards does the TFW-279 support out-of-the-box?
It natively implements test methods defined in ASTM E4, E8, D638, D790, ISO 7500-1, 6892-1, 527, and GB/T 16491–2008, with configurable templates for load rate, sampling frequency, and pass/fail criteria.
Can the system perform creep or stress-relaxation tests?
Yes—via programmable dwell steps and closed-loop load maintenance mode, with duration limits up to 1000 hours and data logging intervals adjustable from 10 ms to 10 s.
Is the software validated for regulated environments (e.g., pharmaceutical QC)?
While the base software is not pre-validated, its architecture supports IQ/OQ documentation packages and can be configured for 21 CFR Part 11 compliance with role-based access control, audit trail logging, and electronic signature integration.
What is the warranty coverage and service response time?
Tuofeng provides a 24-month parts-and-labor warranty, backed by on-site calibration support and remote diagnostics. Standard technical response time is ≤4 business hours during working days in APAC and EMEA regions.
Are custom fixtures or environmental chambers available?
Yes—Tuofeng offers OEM-designed hydraulic wedge grips, torsion adapters, elevated-temperature furnaces (−70°C to +300°C), and humidity-controlled enclosures, all mechanically and electrically interfaced with the main controller.
