Yuelian YL-S71C Electronic Tensile & Shear Testing Machine for Adhesives and Tapes

Overview

The Yuelian YL-S71C is a microprocessor-controlled electronic tensile and shear testing machine engineered for precision mechanical characterization of pressure-sensitive adhesives (PSAs), tapes, films, laminates, and bonded assemblies. It operates on the principle of controlled uniaxial force application via servo-motor-driven ball-screw actuation, enabling accurate measurement of shear strength, peel adhesion, tensile strength, elongation at break, and modulus under standardized loading conditions. Designed to meet the functional requirements of ISO 29881, ASTM D3654 (shear strength of PSA tapes), ASTM D903 (peel resistance), ASTM D1876 (T-peel), and ASTM D6252 (loop tack), the system supports both ambient and environmental chamber-integrated testing configurations. Its modular architecture allows seamless integration with temperature- and humidity-controlled enclosures for elevated- or sub-ambient shear performance evaluation—critical for automotive, medical device, and electronics assembly qualification.

Key Features

• High-fidelity load measurement using dual-range, temperature-compensated load cells with ±0.1% full-scale accuracy and 1/500,000 internal resolution
• Precision crosshead motion control via AC servo motor and preloaded ground ball screw, delivering smooth, repeatable displacement at speeds from 0.01 to 500 mm/min
• Robust aluminum extrusion frame with anodized silver finish and ABS polymer housing—designed for long-term stability and ESD-safe laboratory operation
• Quick-release tooling interface supporting rapid interchange of shear fixtures (e.g., lap-shear, block-shear), peel grips (90°, 180°), tensile jaws, and custom fixtures per ASTM D1002 or ISO 4587
• Comprehensive hardware safety: overload cutoff, emergency stop button, travel limit switches, and automatic rupture detection with programmable deceleration
• Integrated micro-adjustment knobs for fine-tuning upper/lower grip alignment prior to test initiation—essential for minimizing bending moments in shear specimens

Sample Compatibility & Compliance

The YL-S71C accommodates specimens ranging from thin polymeric films (≥25 µm) to rigid composite laminates (≤10 mm thick). Standard configurations support ASTM D3654 Type I (single-lap shear) and Type II (block shear) geometries, as well as ISO 4587 lap-joint shear specimens up to 100 × 25 mm. With optional extensometers and environmental chambers, it complies with GLP and GMP documentation standards—including audit-trail-enabled test logging, user access control, and electronic signature support aligned with FDA 21 CFR Part 11 requirements. All calibration procedures follow ISO/IEC 17025 traceability protocols through NIST-traceable reference standards.

Software & Data Management

The embedded Windows-based test software provides full method scripting capability—including multi-step cyclic loading, hold-time dwell, strain-rate ramping, and conditional branching logic. Real-time plotting supports simultaneous display of force-displacement, force-time, stress-strain, and displacement-time curves with customizable axes scaling and overlay functionality. Up to seven user-defined analysis intervals can be configured per test, with manual point selection (40 points) and automated peak/trough detection (120 points). Statistical reporting includes mean, standard deviation, CPK, median, and trimmed mean (high/low exclusion), exportable to CSV, PDF, or XML formats. Historical test data are stored in encrypted SQLite databases with time-stamped metadata, supporting batch comparison and trend analysis across production lots or material revisions.

Applications

• Quantitative assessment of PSA tape shear holding time and creep resistance per ASTM D4498
• Adhesive bond strength validation for medical transdermal patches, wound dressings, and surgical drapes
• Quality control of double-sided tapes used in EV battery module bonding and thermal interface material lamination
• Development and specification of structural acrylics, epoxies, and cyanoacrylates in aerospace fastening systems
• Characterization of elastomeric sealants and gasket materials under dynamic compression-shear coupling
• Testing of textile laminates, nonwovens, and geotextiles for interlayer delamination resistance

FAQ

Does the YL-S71C support ASTM D3654-compliant shear fixture geometry?
Yes—the system ships with a standardized single-lap shear fixture conforming to ASTM D3654 dimensions and alignment tolerances, including adjustable specimen clamping and vertical load-path alignment verification tools.

Can test methods be exported and shared across multiple instruments?
Yes—test method files (.ymt) are portable and fully compatible across the YL-S70/S71/S72/S73 series, enabling method harmonization in multi-site manufacturing environments.

Is the software compliant with FDA 21 CFR Part 11 for regulated industries?
The software includes role-based user authentication, electronic signatures, and immutable audit trails for all test parameter changes, result modifications, and report generation—fully meeting Part 11 technical and procedural requirements.

What is the maximum specimen thickness supported in shear mode?
With standard shear fixtures, the maximum specimen stack height is 12 mm; custom fixtures accommodate up to 25 mm with recalibrated load cell range selection.

How is calibration maintained over extended use?
The system supports periodic verification using certified dead-weight standards and auto-zero compensation routines; calibration certificates include uncertainty budgets traceable to national metrology institutes.