Yuelian YL-1125 Universal Testing Machine for Flexural Testing of Plates and Sheets

Overview

The Yuelian YL-1125 Universal Testing Machine is an electromechanical static testing system engineered for high-reproducibility flexural characterization of rigid and semi-rigid sheet materials—including metallic plates, polymer composites, laminates, fiber-reinforced plastics, ceramic substrates, and structural foams. It operates on the principle of controlled displacement-driven bending, applying precisely regulated axial force via a servo-controlled crosshead to induce three-point or four-point bending configurations per standardized test geometries. Unlike dynamic or impact testers, this machine delivers quasi-static loading profiles essential for determining elastic modulus, flexural strength, yield behavior, and post-yield deformation response under ASTM, ISO, and GB-compliant boundary conditions. Its modular load frame architecture supports interchangeable fixtures and sensor modules, enabling seamless transition between flexural, tensile, compressive, shear, peel, and tear testing modes—making it a core platform for QC laboratories, R&D centers, and accredited material certification facilities.

Key Features

• High-stiffness dual-column load frame with precision-ground ball screw transmission and synchronous belt drive for minimal axial play and thermal drift
• Programmable speed control from 0.01 to 1000 mm/min, supporting both constant-rate-of-traverse (CRT) and constant-rate-of-loading (CRL) test profiles
• Dual-capacity load cell configuration option (e.g., 5 kN / 50 kN) for extended dynamic range without manual sensor swapping
• Integrated overload protection, emergency stop circuitry, automatic specimen fracture detection, and programmable upper/lower travel limits
• Real-time force-displacement curve acquisition at ≥1 kHz sampling rate, synchronized with video-capable optical extensometry (optional)
• Compliance with ISO 7500-1 Class 0.5 accuracy requirements for force measurement and EN 10002-1 mechanical verification protocols

Sample Compatibility & Compliance

The YL-1125 accommodates flat specimens up to 420 mm wide and 1200 mm in effective span length, suitable for standard and non-standard geometries defined in ISO 178 (plastics), ASTM D790 (rigid plastics), ASTM D6109 (wood-based panels), and GB/T 1449–2005 (fiber-reinforced composites). Three-point bending fixtures conform to support span-to-depth ratios of 16:1 or 32:1; four-point configurations meet ASTM D6109’s 12:1 inner/outer span ratio requirement. All mechanical components are traceably calibrated against national metrology standards (JJG 475–2018), and system validation includes repeatability assessment per ISO 16840-2 for flexural testing instrumentation. The machine satisfies GLP audit requirements through secure user access levels, electronic signature support, and full audit trail logging for all test parameters and results.

Software & Data Management

The embedded Windows-based test control software provides ISO/IEC 17025-aligned data integrity features: role-based authentication, CFR 21 Part 11-compliant electronic signatures, immutable test record archiving, and MS Access relational database integration. Users define test methods using template-driven workflows compliant with ASTM E4, ISO 5893, and GB/T 228.1–2021. Raw data export supports CSV, XML, and PDF formats; curve analysis tools compute flexural modulus (E_f), maximum stress (σ_fb), strain at break (ε_f), and tangent/ secant modulus values per selected strain intervals. Multi-sensor synchronization allows concurrent acquisition from extensometers, environmental chambers (optional), and digital image correlation systems.

Applications

• Flexural property validation of aerospace-grade aluminum alloy sheets (AMS 4027) and titanium cladding (ASTM B265)
• Quality conformance testing of thermoset laminates used in PCB substrates (IPC-4101) and wind turbine blade skins
• Mechanical screening of biodegradable packaging films (ISO 1183, ASTM D882) under humidified conditions
• Interlaminar shear strength evaluation of carbon-fiber prepregs via short-beam shear (ASTM D2344)
• Regulatory submission testing for medical device packaging per ISO 11607-1 and ASTM F88 peel/bend combinations
• Long-term creep compliance studies under sustained flexural loading (ISO 899-1), enabled by optional load-hold modules

FAQ

Does the YL-1125 support automated pass/fail judgment based on specification limits?
Yes—the software allows pre-definition of upper/lower tolerance bands for flexural strength, modulus, and deflection; results are color-coded and flagged in real time.
Can third-party extensometers be integrated?
Yes—via analog voltage input (±10 V) and digital TTL trigger interfaces; compatibility confirmed with ZwickRoell, MTS, and HBM extensometer models.
Is calibration documentation provided with shipment?
Each unit ships with a factory calibration certificate traceable to CNAS-accredited reference standards, including as-found/as-left force and displacement verification reports.
What safety certifications does the system hold?
CE marking per Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU; electrical safety tested to IEC 61000-6-2/6-4.
Is remote diagnostics supported?
Yes—secure TLS-encrypted remote desktop access is available for firmware updates, parameter troubleshooting, and preventive maintenance scheduling.