Tuofeng TF-135 Microcomputer-Controlled Universal Tensile Testing Machine

Overview

The Tuofeng TF-135 Microcomputer-Controlled Universal Tensile Testing Machine is an electromechanical static materials testing system engineered for precision mechanical property characterization under uniaxial loading conditions. It operates on the principle of servo-controlled force application via a high-precision ball screw drive coupled with a calibrated load cell and optical encoder-based displacement feedback. Designed in strict compliance with ISO 7500-1 (Class 0.5), ASTM E4, ASTM E8/E8M, and GB/T 16491–2008 standards, the system delivers traceable, repeatable, and auditable test data suitable for quality control, R&D validation, and regulatory submissions. Its modular architecture supports bidirectional force application—enabling tensile, compression, flexure, shear, peel, tear, and puncture testing—without mechanical reconfiguration. The machine is intended for use in accredited laboratories, manufacturing QA/QC departments, and academic research facilities requiring full compliance with GLP, GMP, and ISO/IEC 17025 documentation protocols.

Key Features

• High-stiffness dual-column frame with reinforced crosshead and base plate, optimized for minimal deflection during 200 kN load application
• Imported AC servo motor paired with worm-gear reducer and preloaded recirculating ball screw for smooth, low-backlash motion control
• Force measurement system featuring temperature-compensated S-type or column-type load cells with ±0.5% FS accuracy and internal 500,000-count A/D resolution
• Displacement measurement via high-resolution optical rotary encoder (0.001 mm resolution), independent of screw pitch or gear ratio
• Dual-speed crosshead movement: rapid positioning (up to 500 mm/min) and fine-adjustment mode (0.001 mm/min minimum speed) with programmable acceleration/deceleration profiles
• Integrated safety architecture including electronic limit switches, emergency stop circuitry, overload protection (110% FS cutoff), and software-enforced operational boundaries
• Motorized crosshead lift with jog control and automatic return-to-start function post-test

Sample Compatibility & Compliance

The TF-135 accommodates specimens ranging from thin polymer films (via pneumatic side-action grips) to structural steel coupons (using wedge-action or hydraulic vise grips). Optional extensometer interfaces support both clip-on axial extensometers (for strain measurement per ASTM E83 Class B-1) and non-contact video extensometry systems. The system meets mechanical and metrological requirements of national and international standards including GB/T 228.1–2021, ISO 6892–1:2019, ASTM D638, ASTM D790, ASTM D1876 (T-peel), ASTM D624 (tear), and ISO 179 (Izod impact when equipped with pendulum accessory). Calibration certificates are issued per ISO/IEC 17025–accredited procedures, with as-found/as-left records and uncertainty budgets available upon request.

Software & Data Management

The Windows-based testing software provides full audit trail functionality compliant with FDA 21 CFR Part 11 (electronic signatures, user access levels, change history, and immutable raw data storage). It supports multiple control modes—including constant rate of extension (CRE), constant rate of force (CRF), load hold, displacement hold, and closed-loop strain control—and enables real-time plotting of up to four synchronized curves (e.g., stress–strain, load–time, displacement–time, and % elongation). Units are freely convertible between SI, imperial, and custom engineering units. All test parameters, environmental metadata (operator ID, lab temperature/humidity if sensor-integrated), and raw channel data (load, displacement, extensometer output) are stored in encrypted binary format with ASCII export capability. Reports conform to ISO 5893 templates and include statistical summaries (mean, SD, CV%), pass/fail flags against specification limits, and digital signature fields for release authorization.

Applications

This system serves as a primary mechanical testing platform across industries requiring standardized material certification. In aerospace, it validates titanium alloy sheet tensile properties per AMS 2369 and composite interlaminar shear strength per ASTM D2344. In automotive supply chains, it verifies rubber bushing compression set (ISO 813), brake pad shear strength (SAE J661), and battery pack structural component crush resistance. For medical device manufacturers, it supports ISO 14243–1 femoral stem fatigue pre-screening and ASTM F2129 pitting corrosion–mechanical coupling studies. In construction materials labs, it executes concrete cylinder compression (ASTM C39), rebar yield testing (ASTM A615), and geotextile tensile strength (ASTM D4595). Universities utilize its open API for custom algorithm integration in constitutive modeling and digital twin development.

FAQ

What standards does the TF-135 comply with for calibration and verification?
It conforms to ISO 7500-1 (static calibration), ISO 376 (load cell verification), and JJG 475–2008 (Chinese metrological verification regulation) — with optional UKAS or DAkkS-accredited calibration services available.
Can the system be integrated into a LIMS or MES environment?
Yes — via TCP/IP-based SCPI command set or OPC UA interface; raw data export supports CSV, XML, and ASTM E1432-compliant formats.
Is third-party validation support provided for 21 CFR Part 11 compliance?
Tuofeng supplies IQ/OQ documentation templates, risk assessments, and on-site validation assistance through certified partners.
What is the warranty coverage and service response time?
Standard 24-month parts-and-labor warranty; extended service contracts include remote diagnostics, annual performance verification, and priority dispatch for on-site engineers within 72 business hours.
Are custom grip designs or environmental chambers supported?
Yes — Tuofeng’s engineering team collaborates on application-specific fixtures (e.g., torsion adapters, elevated-temperature grips up to 300°C) and chamber integration (humidity, vacuum, or thermal cycling).