YANRUN WES-1000B Electro-Hydraulic Servo Universal Testing Machine

Overview

The YANRUN WES-1000B Electro-Hydraulic Servo Universal Testing Machine is a heavy-duty, floor-standing mechanical testing system engineered for high-precision static mechanical property evaluation of metallic, composite, and structural materials under tension, compression, bending, and cold-forming conditions. Based on the principle of closed-loop electro-hydraulic servo control, the machine delivers stable load application with real-time feedback via high-stability pressure transducers and position encoders. Its rigid four-column frame, reinforced base plate, and precision-ground guide columns ensure minimal deflection (<0.05 mm under full load), enabling reliable determination of yield strength (Rp0.2), ultimate tensile strength (Rm), modulus of elasticity (E), and fracture elongation (A%) per ISO 6892-1, ASTM E8/E21, and GB/T 228.1 standards. Designed for laboratory and industrial QC environments, the WES-1000B meets fundamental requirements for structural integrity verification in steel fabrication, bridge component validation, and pre-certification mechanical sampling.

Key Features

• Electro-hydraulic servo architecture with dual-motor drive: 1.5 kW oil pump motor for high-flow hydraulic supply and 0.75 kW crosshead positioning motor for precise displacement control.
• Full-scale force capacity of 1000 kN with uniform resolution of 0.1 kN across 4–100% of full scale—no range switching required during test execution.
• Hydraulic wedge-type clamping system with self-aligning jaw geometry ensures uniform stress distribution and minimizes specimen slippage during high-load tensile tests.
• Modular tooling interface supports rapid exchange of round (Φ13–40 mm), flat (0–20 mm thick × up to 125 mm wide), and bending fixtures—including standardized cold-bend attachment compliant with ISO 7438 and ASTM A370.
• Statically optimized frame construction (890 × 660 × 2200 mm, 3000 kg net weight) provides exceptional torsional rigidity and vibration damping for repeatable results under dynamic loading protocols.
• Dedicated digital control cabinet with integrated LED-based load/displacement indicator enables standalone operation without external PC dependency—ideal for production-floor deployment and GLP-compliant manual recording.

Sample Compatibility & Compliance

The WES-1000B accommodates standard and non-standard specimens conforming to ISO, ASTM, EN, and GB geometries. Round bar specimens from Φ13 mm to Φ40 mm are secured using hardened, replaceable V-groove jaws; flat coupons up to 20 mm thick and 125 mm wide are gripped via parallel-faced platens with adjustable hydraulic pressure. Compression testing utilizes interchangeable φ160 mm circular platens or optional 204 × 204 mm square platens to meet ASTM C39 (concrete cylinders) and ISO 7500-1 calibration requirements. Bending tests employ a three-point configuration with support spacing adjustable up to 450 mm—sufficient for beam specimens per ISO 178 and ASTM D790. All mechanical components comply with ISO 12100 (functional safety) and GB/T 16825.1 (verification of force-measuring systems), supporting traceable calibration against national metrology institutes.

Software & Data Management

While the WES-1000B operates independently via its embedded digital controller, it is compatible with optional PC-based data acquisition software (sold separately) that supports USB/RS232 connectivity. The software enables real-time curve plotting (load vs. displacement, stress vs. strain), automatic parameter extraction (yield point, modulus, breaking load), and export to CSV, PDF, or XML formats. Audit-trail functionality logs operator ID, test date/time, calibration status, and environmental notes—facilitating adherence to ISO/IEC 17025 documentation requirements. For regulated industries, optional 21 CFR Part 11-compliant modules provide electronic signatures, user access levels, and immutable data archiving.

Applications

• Mechanical qualification of structural steel grades (Q345, S355JR, ASTM A572) per EN 10025 and ASTM A6/A6M.
• Compression testing of concrete, mortar, and masonry units in civil engineering laboratories.
• Cold bending validation of rebar (φ6–φ40 mm) per ISO 15630-1 and GB/T 1499.2.
• Quality assurance of welded joints, anchor bolts, and fasteners used in wind turbine towers and offshore platforms.
• Educational use in university materials science labs for hands-on instruction in stress-strain behavior and failure mode analysis.

FAQ

What standards does the WES-1000B support for tensile testing?

It complies with ISO 6892-1, ASTM E8/E21, GB/T 228.1, and EN 10002-1 for metallic materials, including protocol-specific requirements for extensometer use, strain rate control, and rounding rules.
Is hydraulic fluid maintenance specified in the manual?

Yes—the system requires ISO VG 46 anti-wear hydraulic oil; scheduled replacement every 2,000 operating hours or biannually (whichever occurs first) is recommended to maintain servo valve responsiveness and seal longevity.
Can the machine be integrated into an existing LIMS or MES environment?

Via optional RS232/USB-to-Ethernet gateway hardware and API-enabled software, raw test data and metadata can be transmitted to enterprise systems supporting HL7, ASTM E1384, or custom JSON/XML schemas.
Does the WES-1000B include factory calibration documentation?

Each unit ships with a NIST-traceable calibration certificate covering force measurement (±1% accuracy at 4–100% F.S.) and displacement (±0.5% of reading), valid for 12 months from dispatch.
What safety features are built into the control system?

Hardware interlocks prevent crosshead movement during door-open states; emergency stop circuitry cuts all motor power within <100 ms; overload protection limits actuation beyond 105% F.S. to safeguard load cell integrity.