JUJEN JB-117B Electronic Universal Testing Machine

Overview

The JUJEN JB-117B Electronic Universal Testing Machine is a precision-engineered electromechanical system designed for static tensile, compression, bending, and peel testing of metallic wires, polymer cables, elastomeric insulation sheaths, helical thermal insulation springs, and composite cable assemblies. It operates on the principle of controlled force application via a servo-motor-driven crosshead, with load measurement performed by a high-stability S-type or cantilever-type load cell calibrated traceably to national standards (e.g., CNAS-accredited reference masses). Force resolution is optimized for sub-newton sensitivity in low-force regimes—critical for characterizing spring pre-load, jacket adhesion strength, and insulation elongation behavior—while maintaining full-scale accuracy within ±0.5% of reading across its rated capacity range. The machine complies with fundamental mechanical test architecture defined in ISO 7500-1 (static uniaxial testing machines — calibration and verification) and supports method development aligned with ASTM D638 (tensile properties of plastics), ASTM D412 (vulcanized rubber), and IEC 60811-501 (electrical insulating materials).

Key Features

• High-rigidity dual-column frame with precision-ground ball-screw transmission and AC servo motor control for smooth, low-vibration crosshead movement
• Load cell options ranging from 10 N to 5 kN (configurable per application), factory-calibrated with documented uncertainty budgets
• Displacement resolution ≤ 0.001 mm; speed range: 0.001–500 mm/min, programmable in closed-loop mode
• Standardized grips: pneumatic wedge-type for flat specimens, self-tightening roller clamps for round wires/cables, and custom spring-holding fixtures for helical insulation coils
• Integrated overload protection, emergency stop circuitry, and mechanical limit switches compliant with IEC 60204-1 safety standards
• Front-panel LCD interface with real-time load/displacement/strain display and manual jog controls

Sample Compatibility & Compliance

The JB-117B accommodates cylindrical, flat, and coiled geometries typical in cable manufacturing and thermal management components—including copper/aluminum conductors (Ø0.1–12 mm), PVC/LSZH/PET insulation layers, silicone rubber jackets, and stainless-steel or Inconel helical springs (ID 3–25 mm, free length up to 150 mm). Specimen mounting follows ISO 527-2 and GB/T 228.1 guidelines for standardized gauge lengths and alignment. Data acquisition meets GLP documentation requirements: all test parameters (speed, hold time, trigger thresholds) are stored with timestamped metadata. For regulated environments (e.g., pharmaceutical packaging validation per USP , automotive component qualification per VDA 2), optional audit trail modules support 21 CFR Part 11-compliant electronic signatures and change history logging.

Software & Data Management

The system ships with JUJEN TestSuite v3.x—a Windows-based application supporting multi-step test protocols (pre-load → ramp → dwell → return), real-time curve overlay, and automated calculation of modulus, yield point, elongation at break, and spring rate (k = ΔF/Δx). Raw data exports to CSV, Excel, and XML formats; stress-strain curves conform to ASTM E8/E8M reporting conventions. Calibration certificates include as-found/as-left records with drift analysis. Firmware updates are delivered via encrypted USB key with SHA-256 checksum verification to ensure integrity.

Applications

• Tensile strength and elongation testing of insulated power cables per IEC 60227 and GB/T 5023
• Compression resilience evaluation of helical thermal insulation springs used in HVAC ducting and battery pack thermal barriers
• Peel adhesion testing of laminated cable jackets (e.g., PET/Al/PE tri-layers) per ASTM D903
• Loop strength and flex endurance assessment of stranded conductor bundles under cyclic loading
• Quality conformance testing for ISO 9001:2015-certified cable manufacturers and third-party labs (e.g., CTI,华测检测)

FAQ

What is the maximum allowable specimen length for spring testing?
The effective test space between grips is 800 mm; for helical springs, free length must be ≤ 650 mm to ensure axial alignment and avoid buckling during compression.
Does the system support high-temperature environmental testing?
The base JB-117B is rated for ambient operation (10–35°C, 30–80% RH); integration with external environmental chambers (e.g., ESPEC or Angelantoni units) requires optional load-cell cooling jackets and signal isolation modules.
Can test methods be exported and shared across laboratories?
Yes—test templates (.jtm files) encapsulate all hardware settings, calculation formulas, and pass/fail criteria, enabling cross-site method harmonization without reconfiguration.
Is ISO/IEC 17025 accreditation support available?
JUJEN provides metrological traceability documentation, uncertainty budgets per GUM (JCGM 100), and on-site verification services through CNAS-recognized calibration partners.