PW Universal Testing Machine PW-US70

Overview

The PW Universal Testing Machine PW-US70 is an electromechanical static materials testing system engineered for precision mechanical property characterization across research laboratories, quality control departments, and manufacturing R&D environments. Utilizing a high-fidelity AC servo motor coupled with preloaded precision ground ball screws, the PW-US70 delivers stable, low-noise crosshead motion with minimal backlash and thermal drift. Its modular load frame architecture supports dual-capacity load cell configurations—enabling seamless switching between low-force (e.g., 10 N, 50 N) and high-force (e.g., 2 kN, 5 kN) measurement ranges without recalibration or hardware disassembly. The system operates on closed-loop displacement, load, or strain control, satisfying fundamental requirements for tensile, compression, flexure (3-point and 4-point), shear, tear, peel, puncture, cyclic fatigue, and creep testing per international standard protocols.

Key Features

• Modular dual-capacity load cell interface supporting rapid field exchange between 10 N and 5 kN sensors—no recalibration required
• Precision-ground ball screw transmission with aluminum alloy protective shroud (sandblasted + anodized bright silver finish) and ABS polymer enclosure (electrostatically sprayed for abrasion resistance)
• Integrated micro-adjustment switches for fine-tuning upper/lower crosshead position; quick-release coupling for tool-less fixture interchange
• Comprehensive hardware safety suite: overload cutoff, emergency stop button, software-defined travel limits, automatic fracture detection, and auto-return-to-initial-position functionality
• High-resolution data acquisition at 50 samples per second with 24-bit ADC and real-time force/displacement synchronization
• Multi-curve display capability: simultaneous visualization of Force–Displacement, Force–Time, Displacement–Time, and Stress–Strain plots with dynamic zoom, pan, crosshair cursor, and point extraction tools

Sample Compatibility & Compliance

The PW-US70 accommodates specimens ranging from thin polymer films (≥0.05 mm thick) to metallic rods (≤Ø140 mm diameter) and rigid composites up to 1300 mm in effective travel length. Standard test fixtures include wedge-action tensile grips, compression platens, bend supports, peel jigs, and puncture anvils—with optional extensometers (contact and non-contact) and environmental chambers available for temperature-controlled testing. The system’s mechanical design and control firmware align with metrological traceability requirements under ISO/IEC 17025, and its operational workflow supports GLP/GMP documentation practices—including user access control, audit trail logging, and electronic signature compliance per FDA 21 CFR Part 11 when integrated with validated software modules.

Software & Data Management

The PW-US70 is operated via PWTestSuite™ v4.x—a Windows-based, multi-language testing platform compliant with IEC 61508 functional safety principles. It enables fully customizable test methods with nested step sequences, including velocity-controlled, displacement-limited, load-ramped, stress-rate-regulated, and strain-targeted profiles. Up to seven independent analysis intervals can be defined per test, with manual annotation at up to 40 points and automated sampling at 120 predefined positions. Statistical reporting includes peak load, yield strength, modulus of elasticity, elongation at break, energy absorption (area under curve), coefficient of variation, CPK process capability index, and comparative overlay of historical datasets. All raw data are stored in ASCII CSV and XML formats for third-party integration with LIMS or ERP systems.

Applications

The PW-US70 serves as a primary verification instrument for mechanical performance validation across diverse sectors: polymer film peel adhesion in packaging QA; tensile strength and elongation of medical tubing per ISO 10993-12; compressive yield behavior of foams and elastomers in automotive seating; three-point flexural modulus of printed circuit board laminates (IPC-TM-650); puncture resistance of footwear soles (ISO 20344); cyclic compression endurance of polyurethane cushioning; and static load holding of corrugated shipping containers (ASTM D642). Its versatility extends to academic materials science labs conducting fundamental structure–property correlation studies on nanocomposites, biodegradable polymers, and fiber-reinforced thermosets.

FAQ

What standards does the PW-US70 support for calibration and testing?
The system complies with ISO 7500-1 (static calibration of force-proving instruments) and ISO 6892-1 (tensile testing of metallic materials), and is configurable for ASTM E4, ASTM D882, ISO 11843, and GB/T 228.1 test routines.
Can the PW-US70 perform closed-loop strain control without an extensometer?
No—strain-controlled testing requires either a contact-type axial extensometer or a non-contact digital image correlation (DIC) system; displacement-based control is standard without add-ons.
Is the software compliant with FDA 21 CFR Part 11 for regulated industries?
Yes—when deployed with PWTestSuite™ Validation Package (V4.3+), it provides role-based user authentication, electronic signatures, immutable audit trails, and data integrity safeguards meeting Part 11 requirements.
What is the maximum specimen height accommodated by the largest PW-US70 configuration?
The PW-US70-1300 variant offers 1300 mm effective vertical travel and accommodates specimens up to 1300 mm tall with Ø140 mm maximum cross-sectional width.
Does the system support automatic report generation in PDF or Excel format?
Yes—test reports can be exported in PDF (with embedded graphs and metadata), Excel (.xlsx), or structured XML for enterprise data ingestion.