Tuofeng TFW-200 Horizontal Electromechanical Tensile Testing Machine

Overview

The Tuofeng TFW-200 Horizontal Electromechanical Tensile Testing Machine is a high-capacity, precision-engineered system designed for static tensile evaluation of structural and safety-critical components under controlled loading conditions. Unlike hydraulic systems, this electromechanical platform employs a dual-acting servo motor-driven actuator with integrated ball-screw transmission, delivering superior force linearity, repeatable stroke control, and zero fluid maintenance requirements. Its horizontal configuration accommodates exceptionally long specimens—such as marine-grade wire ropes, mooring chains, aircraft cable assemblies, anchor shackles, lifting slings, and high-strength fasteners—without gravitational sag or alignment-induced bending moments. The machine operates in full compliance with international calibration and verification standards including ISO 7500-1 (Class 0.5), ASTM E4 (for verification of force-measuring instruments), and GB/T 228.1 (metallic materials tensile testing). All mechanical load paths are statically determinate and preloaded to eliminate backlash, ensuring traceable, metrologically sound data acquisition across the full 5000 kN range.

Key Features

• Robust welded steel frame with reinforced lateral bracing, engineered for 1.5× ultimate load safety factor and long-term dimensional stability under cyclic loading.
• Dual-acting servo motor actuator with precision-ground ball screw and recirculating roller nut assembly, enabling smooth, noise-free operation from 0.001 mm/min to 200 mm/min with programmable ramp profiles.
• High-stiffness bidirectional load cell (±0.5% accuracy per ISO 7500-1) mounted in-line with the test axis to eliminate off-axis moment errors.
• Optical encoder-based displacement measurement system with 0.0001 mm resolution and real-time position feedback for closed-loop strain control.
• Modular fixture interface supporting quick-change configurations—including clevis grips, wedge-action jaw sets, swivel hooks, and custom-threaded adapters—for specimens ranging from M6 bolts to Ø120 mm cables.
• Motorized crosshead with hydraulic-assisted positioning and mechanical pin-locking mechanism for rapid, repeatable adjustment of test length between 2 m and 25 m (excluding piston stroke).
• Integrated emergency stop circuitry, physical light curtains, and transparent polycarbonate safety enclosure meeting ISO 13857 requirements.

Sample Compatibility & Compliance

The TFW-200 accommodates specimens up to 25 meters in effective gauge length and supports standardized test methods for metallic and composite tension members. It is routinely deployed for qualification testing per ASTM A931 (steel strand), ISO 17893 (marine chain), EN 13411-2 (terminations), and MIL-STD-1312 (fastener proof loading). All hardware—including load train components, grip surfaces, and alignment fixtures—undergoes hardness verification (HRC 58–62) and surface finish inspection (Ra ≤ 0.8 µm) to prevent premature specimen slippage or stress concentration. Calibration certificates are issued per ISO/IEC 17025 by an accredited third-party laboratory, with as-found/as-left records retained for audit readiness.

Software & Data Management

Control and analysis are performed via Tuofeng’s proprietary TestMaster Pro v4.2 software, compliant with FDA 21 CFR Part 11 for electronic records and signatures. The platform supports three independent closed-loop control modes: force, displacement, and strain—with automatic switchover during multi-stage tests. Real-time visualization includes synchronized plots of force vs. displacement, stress vs. strain, and load-time history. Raw data export is available in ASCII (.csv), XML, and universal .tdms formats. Audit trails log all user actions, parameter changes, and calibration events with timestamped digital signatures. Software modules include automatic yield point detection (0.2% offset method), fracture energy calculation (area under curve), and batch report generation aligned with ISO 5893 reporting templates.

Applications

• Tensile verification of offshore mooring systems (wire rope, stud-link chain, synthetic fiber rope) per DNVGL-RP-F105.
• Proof and break testing of aerospace fasteners (bolts, pins, turnbuckles) in accordance with NASM1312-7 and SAE AMS2249.
• Quality assurance of personal protective equipment (PPE) including fall arrest lanyards, harness webbing, and carabiners per EN 362 and ANSI Z359.1.
• Structural validation of bridge suspension cables, elevator hoisting ropes, and mining conveyance chains.
• Research-grade characterization of high-strength alloys (e.g., duplex stainless steels, Inconel 718) and advanced composites under slow-strain-rate conditions.

FAQ

What is the maximum specimen length the TFW-200 can accommodate?

The effective test length is adjustable from 2 meters to 25 meters, excluding the 1000 mm actuator stroke; total system footprint remains fixed regardless of selected gauge length.
Does the system support strain-controlled testing?

Yes—via external extensometer input (LVDT or video-based) integrated into the closed-loop control architecture for precise strain rate regulation down to 10⁻⁶ s⁻¹.
Is the software validated for regulated environments?

TestMaster Pro v4.2 includes full 21 CFR Part 11 compliance packages, including role-based access control, electronic signature workflows, and immutable audit trail generation.
Can the machine perform cyclic fatigue testing?

While primarily configured for static tensile evaluation, optional add-on modules enable low-cycle fatigue testing (R = 0.1, 0.5) up to 10⁵ cycles at frequencies ≤ 5 Hz.
What documentation is provided with delivery?

Each unit ships with ISO/IEC 17025 calibration certificate, mechanical drawings, CE Declaration of Conformity, electrical safety report (IEC 61000-6-4), and full technical manual including maintenance schedules and torque specifications.