Yuelian YL-S70 Servo-Controlled Peel & Tensile Testing Machine (Compliant with GB/T 2792)

Overview

The Yuelian YL-S70 is a high-precision, servo-controlled universal testing machine engineered for static mechanical property evaluation of materials and components in accordance with Chinese national standard GB/T 2792 (Peel Strength of Adhesive Tapes) and broader international tensile testing protocols including ASTM D903, ISO 8510-2, and EN 1979. It operates on the principle of controlled displacement or force actuation via a closed-loop AC servo motor system coupled with a preloaded precision ball screw transmission. This architecture ensures exceptional repeatability (<0.1% FS force accuracy), minimal hysteresis, and stable low-speed performance down to 0.001 mm/min—critical for peel, adhesion, and soft-material characterization where creep and relaxation behavior must be resolved. The machine supports both tension and compression modes, with bidirectional load cell capability enabling seamless transition between pulling and pushing tests without hardware reconfiguration.

Key Features

• Full PC-based control architecture with real-time dual-channel data acquisition at 2000 Hz, supporting synchronized capture of force, displacement, time, and derived strain signals.
• Modular quick-change fixture interface allowing tool-free swapping of grips, peel jigs, bending fixtures, puncture probes, and custom tooling—optimized for rapid method transitions across standards such as ASTM D3330 (peel adhesion), ISO 11339 (adhesive strength), and GB/T 2792-2014.
• Seven programmable test intervals, up to 40 manual data points, and 120 auto-sampling points per test—enabling granular analysis of yield onset, plastic deformation, fracture propagation, and post-failure relaxation.
• Multi-curve overlay functionality: Simultaneous display and comparative analysis of force–displacement, force–time, displacement–time, and stress–strain plots; all with zoom, pan, crosshair cursor, and point extraction tools.
• Advanced control modes: Constant rate of extension (CRE), constant load, constant displacement, constant stress, constant strain, and their respective ramped or stepped derivatives—including nested multi-step sequences with conditional triggers (e.g., auto-return after peak load, fracture detection via slope threshold, zero-point reset).
• Comprehensive safety architecture: Dual-stage overload protection (hardware + software), emergency stop with mechanical brake engagement, stroke limit switches, and automatic shutdown upon specimen rupture or system fault.

Sample Compatibility & Compliance

The YL-S70 accommodates a wide range of specimen geometries and material classes—including pressure-sensitive adhesives, polymer films, laminated composites, packaging substrates, biomedical tapes, rubber sheets, foams, textiles, and thin metallic foils. Its Ø140 mm test chamber and 450 mm effective stroke support standardized peel configurations (180°, 90°, T-peel) as well as tensile bars, dog-bone specimens, and flexural beams per ASTM D638, ISO 527, and ISO 178. All firmware and software modules are designed to generate audit-ready test reports compliant with GLP and GMP documentation requirements. While not inherently 21 CFR Part 11 certified, the system supports integration with validated third-party electronic lab notebook (ELN) platforms that provide user authentication, audit trail logging, and electronic signature capabilities required for regulated environments.

Software & Data Management

Bundled YL-TestSuite v4.x delivers an intuitive Windows-native interface with embedded statistical engine supporting CPK, standard deviation, mean, median, max/min, trimmed mean, and coefficient of variation calculations. Raw data exports to CSV, Excel (.xlsx), and XML formats preserve metadata (operator ID, timestamp, calibration ID, environmental notes). Historical test records are indexed by project, material lot, test method, and operator—facilitating traceability and trend analysis across production batches. The software includes customizable report templates aligned with internal QA forms and external certification bodies (e.g., SGS, BV, CNAS). Optional network licensing enables centralized license management and concurrent multi-user access within a LAN environment.

Applications

• Quantitative peel strength assessment of medical adhesive tapes, transdermal patches, and wound dressings per ISO 2555 and YY/T 0148.
• Mechanical validation of flexible printed circuit (FPC) bonding integrity under thermal cycling conditions.
• Quality control of lithium-ion battery electrode coating adhesion using controlled-angle peel and shear protocols.
• Characterization of elastomeric sealant cohesion and substrate adhesion in automotive trim assembly.
• Validation of food packaging laminate delamination resistance under humidity-controlled storage simulation.
• Research-grade tensile modulus, elongation at break, and yield point determination for biodegradable polymers (PLA, PHA) per ISO 527-2.

FAQ

Does the YL-S70 comply with ISO/IEC 17025 calibration requirements?
Yes—the load cell and displacement encoder are calibrated using NIST-traceable reference standards, and calibration certificates include uncertainty budgets per ISO/IEC 17025 Annex A.3.
Can the system perform cyclic fatigue testing?
It supports basic static-dynamic hybrid sequences (e.g., preload → hold → ramp → unload), but dedicated high-cycle fatigue testing requires optional add-on modules with enhanced thermal management and higher-frequency actuation capability.
Is third-party validation support available for pharmaceutical applications?
Yuelian provides IQ/OQ documentation templates and participates in joint protocol development with qualified vendors; final PQ must be executed on-site by the end user’s qualified personnel per FDA guidance.
What is the recommended maintenance interval?
Preventive maintenance—including ball screw lubrication, encoder alignment verification, and load cell zero-drift check—is advised every 6 months or after 500 operational hours, whichever occurs first.
Are ASTM- or ISO-aligned test methods preloaded in the software?
Yes—over 30 standardized methods are embedded, including ASTM D903 (peel), D638 (tensile), D790 (flexural), and ISO 8510-2 (peel), with editable parameters to match lab-specific deviations.