Tuofeng TFW-158 Servo-Controlled Universal Testing Machine for Composite Materials
| Brand | Tuofeng |
|---|---|
| Model | TFW-158 |
| Type | Electromechanical Universal Testing Machine |
| Max Test Load | 150 kN (customizable from 5–200 kN) |
| Accuracy Class | 0.5 |
| Effective Force Range | 0.2%–100% of full scale |
| Force Measurement Accuracy | ±0.005% of reading |
| Resolution | 1 part in ±500,000 full-scale codes (single-range, no auto-ranging) |
| Drive System | Imported servo motor with precision worm-gear reducer |
| Lead Screw | High-accuracy preloaded ball screw |
| Effective Test Width | 600 mm (expandable) |
| Stroke | 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 protection (>110% FS), dual-speed motorized crosshead return |
| Software | Multi-language (EN/CN/TC), compliant with ASTM E4, ISO 7500-1, GB/T 16491-2008, JJG 475-2008, supports GLP/GMP audit trails and 21 CFR Part 11 user access control modules |
Overview
The Tuofeng TFW-158 Servo-Controlled Universal Testing Machine is a high-precision electromechanical system engineered for static mechanical characterization of advanced composite materials, metals, polymers, elastomers, and fiber-reinforced structures. Operating on the principle of closed-loop servo-controlled force and displacement actuation, it delivers traceable, repeatable load application across tension, compression, bending, shear, peel, tear, and puncture configurations. Its modular architecture integrates a rigid two-column frame, high-stiffness preloaded ball screw transmission, and a calibrated force transducer meeting ISO 7500-1 Class 0.5 requirements—ensuring metrological integrity throughout the full dynamic range (0.2% to 100% of selected capacity). Designed explicitly for R&D laboratories and quality assurance departments in aerospace, automotive composites, civil infrastructure, and academic materials science, the TFW-158 supports standardized mechanical testing under GB/T, ASTM, ISO, DIN, JIS, and BS protocols—including ASTM D3039 (tensile properties of polymer matrix composites), ASTM D695 (compressive properties), and ISO 527-4 (reinforced plastics).
Key Features
- High-fidelity force measurement with ±0.005% reading accuracy and 1:500,000 internal resolution—enabling detection of sub-milligram force deviations during low-load interfacial failure analysis.
- True single-range force sensing without auto-ranging or range switching, eliminating hysteresis and zero drift during multi-stage cyclic loading.
- Infinitely variable crosshead speed control (0.001–500 mm/min), synchronized with real-time PID-adjusted torque output to maintain constant strain rate during ASTM D638 or ISO 527 ramp tests.
- Dual-mode displacement feedback: optical encoder for gross motion tracking and optional clip-on or non-contact extensometry for localized strain mapping (e.g., fiber/matrix debonding onset).
- Integrated safety architecture: hardware-based electronic limits, redundant emergency stop circuitry, and programmable overload cutoff at 110% of full-scale load.
- Motorized dual-speed crosshead: rapid positioning (up to 200 mm/min) for setup and slow, controlled approach (down to 0.001 mm/min) for precise contact initiation and micro-displacement testing.
Sample Compatibility & Compliance
The TFW-158 accommodates specimens ranging from thin unidirectional prepreg coupons (0.1 mm thick) to thick-section carbon-fiber laminates (up to 100 mm), via customizable jaw geometries—including pneumatic, wedge-action, and hydraulic self-tightening fixtures. Standard configurations support ASTM D3410 (open-hole compression), ASTM D3518 (in-plane shear), and ISO 14129 (interlaminar shear) test methods. All mechanical calibrations conform to national and international metrological standards: GB/T 16491-2008 (Chinese specification for UTM design), JJG 475-2008 (verification regulation), ISO 7500-1:2018 (static calibration), and ASTM E4-22 (force verification procedures). The system is fully compatible with GLP-compliant workflows, supporting user-defined roles, electronic signatures, and tamper-evident audit logs.
Software & Data Management
Tuofeng’s proprietary TESTMaster™ software operates natively on Windows 10/11 and provides full compliance-ready test automation. It supports ASTM-defined control modes—including constant-rate-of-traverse (CRT), constant-rate-of-load (CRL), constant-rate-of-extension (CRE), and load-hold or displacement-hold sequences. Real-time plotting includes synchronized stress–strain, load–displacement, and time-based parameter overlays. Data export conforms to ASTM E1434 and ISO 10360-5 formats (CSV, XML, PDF), with built-in report templates aligned to ISO/IEC 17025 documentation requirements. Audit trail functionality records all operator actions, parameter changes, and calibration events with timestamps and user IDs—fully satisfying FDA 21 CFR Part 11 electronic record and signature criteria when configured with role-based authentication and digital certificate integration.
Applications
- Mechanical validation of CFRP and GFRP laminates per Airbus AITM 1-0003 or Boeing BSS 7260.
- Interfacial shear strength assessment of thermoplastic matrix composites using microbond or fragmentation tests.
- Compression-after-impact (CAI) residual strength evaluation per ASTM D7137.
- Tensile fatigue life profiling under variable amplitude loading (ASTM D3479).
- Adhesive bond strength quantification in hybrid metal-composite joints (ASTM D1002, ISO 4587).
- Creep and stress-relaxation behavior analysis of bioresorbable polymer matrices (ISO 10993-14).
FAQ
What standards does the TFW-158 comply with for force calibration and verification?
It meets ISO 7500-1:2018 Class 0.5, ASTM E4-22, GB/T 16491-2008, and JJG 475-2008, with factory calibration traceable to NIM (National Institute of Metrology, China) or equivalent national metrology institutes.
Can the system perform ASTM D3039 tensile testing on carbon fiber laminates with full data traceability?
Yes—when equipped with an ASTM E83-compliant extensometer and configured with TESTMaster™’s GLP module, it generates fully auditable stress–strain curves, modulus calculation, and failure mode annotations per ASTM D3039 Annex A3.
Is remote software update and technical support available post-installation?
Yes—TESTMaster™ supports secure over-the-air updates; Tuofeng provides lifetime firmware maintenance and remote diagnostic assistance via encrypted VNC session upon customer authorization.
Does the machine support third-party transducers or custom fixture interfaces?
Yes—the controller features analog/digital I/O expansion ports and supports IEEE 488 (GPIB) and Ethernet/IP communication for integration with external environmental chambers, acoustic emission systems, or digital image correlation (DIC) hardware.
What is the warranty coverage and service response time for international customers?
Standard warranty is 24 months parts-and-labor; extended service contracts include on-site calibration, preventive maintenance, and priority response within 5 business days for Tier-1 regions (EU, NA, APAC) upon validated fault report.
