Yuelian YL-1152 Universal Testing Machine for Tensile Strength Testing of Rebar

Overview

The Yuelian YL-1152 Universal Testing Machine is an electromechanical force-testing system engineered for high-reproducibility mechanical characterization of metallic and non-metallic materials under uniaxial loading conditions. Designed specifically to meet the stringent requirements of rebar tensile strength evaluation per ISO 6892-1, ASTM A615/A615M, and GB/T 228.1, this machine implements closed-loop servo control with real-time load and displacement feedback to ensure traceable, repeatable, and standards-compliant test execution. Its rigid four-column frame architecture—constructed from high-strength steel with preloaded linear guides—minimizes deflection during high-force testing (up to 200 kN), while the precision-ground ball screw drive delivers sub-micron positioning resolution and minimal backlash across the full 1000 mm stroke range.

Key Features

• Electromechanical actuation system featuring a 2.5 kW AC servo motor coupled to a ground ball screw and synchronous timing belt transmission—optimized for low noise, zero hydraulic fluid maintenance, and long-term stability.
• High-fidelity load measurement via dual-range or single-range load cells calibrated to ISO 7500-1 Class 0.5, with force resolution of 1 part in 500,000 and accuracy better than ±0.3% of indicated value.
• Integrated PC-based control interface supporting fully programmable test profiles—including ramp-to-load, ramp-to-strain, hold, cyclic, and multi-step sequences—with real-time graphical monitoring of stress–strain, load–displacement, and time-based curves.
• Automated safety protocols including overload cutoff, specimen fracture detection, upper/lower limit position enforcement, emergency stop circuitry compliant with IEC 60204-1, and automatic return-to-start after test completion.
• Modular fixture mounting system compatible with wedge-action, pneumatic, hydraulic, and custom-designed grips—including standardized rebar tensile fixtures conforming to ISO 6892-1 Annex C and ASTM E8/E8M geometry requirements.

Sample Compatibility & Compliance

The YL-1152 accommodates specimens ranging from fine polymer filaments (≥0.1 mm diameter) to structural reinforcing bars up to Ø40 mm, with adjustable crosshead spacing and 420 mm test width enabling evaluation of full-scale deformed rebar specimens—including ribbed HRB400E, HRB500E, and stainless grades per GB/T 1499.2 and ASTM A706. All hardware and firmware comply with metrological traceability requirements outlined in JJG 475-2008 (China), ISO/IEC 17025:2017 (for accredited labs), and EU Machinery Directive 2006/42/EC. The system supports audit-ready data integrity through configurable electronic signatures, user access levels, and tamper-evident test record archiving—fully aligned with GLP and GMP documentation expectations.

Software & Data Management

The proprietary Yuelian TestMaster™ software runs on Windows OS and provides native support for MS Access relational database storage, enabling structured querying of historical test records by material ID, operator, date, standard, or batch number. It exports raw and processed data in CSV, XML, and PDF formats—each report embeds metadata such as calibration certificate IDs, environmental conditions (optional sensor integration), and digital signatures per FDA 21 CFR Part 11 requirements. Advanced curve analysis tools include automatic yield point detection (0.2% offset method), Young’s modulus calculation via tangent or secant methods, uniform elongation derivation, and fracture energy integration. Multi-sensor synchronization allows concurrent acquisition from extensometers, video strain systems, or temperature probes.

Applications

This system serves as a primary mechanical testing platform across R&D laboratories, QC/QA departments, and third-party certification bodies. Core applications include: tensile property determination of hot-rolled deformed steel bars (yield strength, ultimate tensile strength, total elongation, bendability); compression testing of concrete cylinders and mortar prisms; flexural evaluation of structural composites and laminates; peel and shear adhesion assessment for coated metals and polymer-coated rebar; and cyclic fatigue pre-screening per ASTM E466. It is routinely deployed in infrastructure projects requiring compliance with ISO 15630-1, EN 10080, and national building codes governing seismic-grade reinforcement.

FAQ

Does the YL-1152 support automatic yield strength calculation per ISO 6892-1?
Yes—TestMaster™ implements both the 0.2% offset method and the upper/lower yield point detection algorithms defined in Clause 11.2 of ISO 6892-1:2019, with user-configurable strain rate control during yielding.
Can the system be integrated into a LIMS environment?
Yes—via ODBC-compliant MS Access backend or optional REST API module, enabling bidirectional data exchange with laboratory information management systems.
Is calibration documentation provided with shipment?
Each unit ships with a factory calibration certificate traceable to NIM (National Institute of Metrology, China) or equivalent national metrology institute, covering load cell, displacement encoder, and speed verification.
What extensometer options are supported?
The system interfaces with clip-on, video, and laser extensometers meeting ISO 9513 Class 1 or better, with automatic recognition and channel mapping within the software.
Are software updates included post-purchase?
Yuelian provides free minor version updates and security patches for three years from commissioning; major version upgrades are available under optional annual support contracts.