QJWE Series Electro-Hydraulic Servo Tensile Testing Machine

Overview

The QJWE Series Electro-Hydraulic Servo Tensile Testing Machine is a high-capacity, microprocessor-controlled mechanical testing system engineered for precision static mechanical characterization of structural materials under uniaxial loading conditions. It operates on an electro-hydraulic servo principle, integrating a lower-mounted hydraulic actuator with dual-column load frame architecture and proportional valve-based closed-loop control. This configuration enables stable, programmable force and displacement control across tension, compression, bending, and shear modes—compliant with fundamental test standards including ASTM E4, ASTM E8/E8M, ISO 6892-1, ISO 37, and GB/T 228.1. Designed for heavy-duty industrial and R&D laboratory environments, the system supports full-scale evaluation of metallic alloys, reinforced concrete, pre-stressed cementitious composites, thermoplastic and thermoset polymers, and composite laminates.

Key Features

• Electro-hydraulic servo actuation with digital proportional pressure control, enabling smooth, low-noise loading at rates from 0.001 to 100 mm/min (adjustable in real time)
• High-rigidity dual-column steel frame with adjustable test space; maximum vertical clearance up to 800 mm between platens
• Imported multi-range high-precision load cells calibrated to ±0.5% accuracy over 0.2–100% FS, traceable to national metrological standards
• Integrated displacement transducer with resolution better than ±0.5% of full-scale indication, synchronized with load acquisition
• Hydraulic wedge-type grips with interchangeable jaw sets for round specimens (φ6–70 mm) and flat specimens (up to 40 mm thickness)
• Modular accessory support for standardized bending fixtures (span adjustable from 400 to 1000 mm), shear dies (φ10–30 mm), and compression platens
• Industrial-grade 3-phase motor drive (1.5 kW or 3.25 kW options), optimized for thermal stability and long-term duty cycle operation

Sample Compatibility & Compliance

The QJWE platform accommodates a broad spectrum of specimen geometries and material classes per international mechanical testing conventions. Round tensile bars conforming to ASTM E8 and ISO 6892-1 are secured using self-aligning hydraulic clamps; flat coupons (0–40 mm thick) are tested per ASTM D638 or ISO 527-2. Compression tests on concrete cylinders (150 × 300 mm) or metal blocks follow ASTM C39 and ISO 7500-1 protocols. Bending configurations meet ASTM D790 and ISO 178 requirements, while shear testing adheres to ASTM D732 methodology. All hardware and software components comply with CE Machinery Directive 2006/42/EC, and the control system architecture supports audit-ready data integrity per GLP and GMP-aligned practices—including electronic signature capability and user-access-level management.

Software & Data Management

The system is operated via a dedicated Windows-based testing software suite supporting real-time multi-channel acquisition (load, displacement, strain via optional extensometer input). The interface provides customizable test templates, automatic parameter calculation (yield strength, ultimate tensile strength, modulus, elongation, reduction in area), and dynamic curve overlay. Raw data is stored in ASCII-compatible .csv format with embedded metadata (operator ID, timestamp, calibration certificate ID, environmental conditions). Export functions include PDF report generation with configurable headers, automated compliance marking (e.g., “Test conducted per ASTM E8-23”), and secure network transmission via encrypted TCP/IP protocol. Software revision history and change logs are retained for regulatory review, satisfying documentation requirements under FDA 21 CFR Part 11 when configured with audit trail and role-based authentication modules.

Applications

• Mechanical qualification of structural steel grades (Q345, S355, ASTM A572) in civil engineering and offshore fabrication
• Quality assurance of prestressed concrete tendons and grouted duct systems per EN 10138 and ISO 6934
• R&D validation of high-performance polymer composites used in aerospace primary structures
• Calibration and verification of production-line tensile testers in Tier-1 automotive component manufacturing
• Failure analysis of welded joints and heat-affected zones under monotonic and step-loading profiles
• Long-term creep and relaxation studies (with optional hold-control module) for elastomeric bridge bearings and seismic isolators

FAQ

What standards does the QJWE series comply with for tensile testing?
It supports ASTM E8/E8M, ISO 6892-1, GB/T 228.1, and EN ISO 6892-1 for metallic materials; ASTM D638 and ISO 527-2 for plastics.
Is extensometer integration supported?
Yes—both clip-on and non-contact video extensometers can be connected via analog or digital interface for strain measurement with resolution down to 0.1 µm.
Can test data be exported for third-party statistical analysis?
All raw data is exportable as time-stamped CSV files with SI-unit metadata, compatible with MATLAB, JMP, Minitab, and Python-based analytics pipelines.
What maintenance intervals are recommended for hydraulic system integrity?
Oil filtration and pressure valve calibration are advised every 1,000 operational hours or annually, whichever occurs first; full hydraulic fluid replacement every 3 years.
Does the system support remote diagnostics and firmware updates?
Yes—via secure SSH-enabled Ethernet connection, authorized service engineers can perform health checks, parameter tuning, and version-controlled firmware upgrades.