Tuofeng TFW-128 Microcomputer-Controlled Electromechanical Universal Testing Machine

Overview

The Tuofeng TFW-128 Microcomputer-Controlled Electromechanical Universal Testing Machine is a high-precision, dual-column electromechanical system engineered for static mechanical property characterization of metallic, polymeric, composite, and ceramic materials. It operates on the principle of closed-loop servo-controlled displacement actuation via a precision ball-screw drive coupled with a high-stiffness load frame and calibrated load cell. Designed to meet ISO 7500-1:2018 and ASTM E4-23 standards for force measurement systems, the TFW-128 delivers traceable, repeatable, and reproducible results across tensile, compression, flexure, shear, peel, tear, and puncture test modes. Its modular architecture supports interchangeable fixtures and transducers, enabling compliance with international test protocols including ISO 6892-1, ASTM D638, ASTM D790, ASTM D143, ISO 179, ISO 1133, and GB/T 228.1—2021.

Key Features

• Robust dual-column steel frame with rigid crosshead guidance and preloaded linear bearings for minimal deflection under maximum load (200 kN)
• Imported AC servo motor paired with precision worm-gear reducer and ground ball-screw transmission for smooth, low-noise, zero-backlash motion control
• High-resolution force measurement system with ±0.5% accuracy over 0.2–100% FS range and 1:500,000 internal resolution, eliminating range-switching artifacts
• Displacement feedback via high-fidelity optical encoder with 0.001 mm resolution and ±0.005% linearity error
• Dual-speed crosshead movement (fast jog + fine positioning) with programmable return-to-start function and automatic post-test homing
• Integrated safety suite: hardware-based dual-limit switches, emergency stop circuitry, real-time overload detection (>110% FS), and software-enforced operational boundaries
• Modular fixture interface accommodating standardized wedge-action grips, compression platens, bend fixtures, peel jigs, and custom tooling per ASTM E8/E9/E292 requirements

Sample Compatibility & Compliance

The TFW-128 accommodates specimens ranging from thin films (<0.1 mm) to structural beams (up to 600 mm wide × 1000 mm height). With optional extensometry—either clip-on axial extensometers (ISO 9513 Class 1) or digital image correlation (DIC) systems—the machine satisfies strain-sensitive standards such as ASTM E83 (verification of extensometer accuracy) and ISO 527-2 (tensile testing of plastics). It is certified to comply with JJG 475–2008 (Chinese verification regulation for electromechanical testing machines) and conforms to GB/T 16491–2008 (general specifications for electronic universal testing machines). All force, displacement, and time data are timestamped and logged with audit-trail capability, supporting GLP/GMP environments where 21 CFR Part 11-compliant electronic records may be implemented via optional software modules.

Software & Data Management

The Windows-based TFW-TestSuite v5.x provides full IEC 61508-aligned control logic and supports multiple test modes: load-controlled, displacement-controlled, strain-controlled, and hold (load/position/time). Real-time plotting includes synchronized force–time, stress–strain, force–displacement, and displacement–time curves, with on-the-fly switching between views. Units are freely convertible (N/kN/lbf, mm/in, MPa/psi), and language support includes English, Simplified Chinese, Traditional Chinese, and German. Raw data export is available in CSV, XML, and Excel-compatible formats; test reports include metadata (operator ID, calibration date, environmental conditions), statistical summaries (mean, min, max, CV%), and overlay-capable curve comparison. Data integrity is preserved through auto-save on power loss, manual archive tagging, and configurable retention policies. Firmware and application updates are delivered remotely under Tuofeng’s lifetime technical support agreement.

Applications

This system serves as a primary mechanical characterization platform in R&D laboratories and QC departments across aerospace (e.g., titanium alloy tensile properties per AMS 2300), automotive (steel sheet formability per ISO 10275), medical device manufacturing (polymer suture strength per ISO 10993-12), construction materials (concrete compressive strength per ASTM C39), and advanced composites (interlaminar shear per ASTM D2344). It is routinely deployed for validation of material certifications, incoming inspection of raw stock, process parameter optimization (e.g., heat treatment effects on yield strength), and failure mode analysis in forensic engineering investigations.

FAQ

What international standards does the TFW-128 support out-of-the-box?

It natively implements test sequences and reporting templates for ASTM D638, ISO 6892-1, GB/T 228.1, ASTM D790, and ISO 178, with customizable method libraries for proprietary or industry-specific protocols.
Can the system be integrated into an existing LIMS or MES environment?

Yes—via TCP/IP API and OPC UA interfaces, enabling bidirectional data exchange with laboratory information management systems and enterprise manufacturing execution systems.
Is third-party calibration certification included with purchase?

A factory-issued NIST-traceable calibration certificate covering force, displacement, and speed axes is provided; ISO/IEC 17025 accredited field calibration services are available upon request.
What is the typical lead time for custom fixture design and delivery?

Standard fixtures ship within 5 business days; bespoke tooling—including hydraulic wedge grips or high-temperature furnace integration—is typically delivered in 3–6 weeks following final mechanical drawings approval.
Does the software support multi-user role-based access control?

Yes—administrator, operator, and reviewer profiles can be configured with granular permissions for method editing, test execution, result approval, and audit log viewing, aligning with FDA 21 CFR Part 11 requirements.