SINOTEST ZYDL Series Rubber Bearing Compression-Shear (Single-Shear) Testing System
| Brand | SINOTEST |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | ZYDL Series |
| Pricing | Available Upon Request |
Overview
The SINOTEST ZYDL Series Rubber Bearing Compression-Shear (Single-Shear) Testing System is a high-stiffness, dual-actuator electro-hydraulic servo-controlled test platform engineered for the structural and mechanical characterization of elastomeric bearing devices under combined axial compression and horizontal shear loading. Designed in strict accordance with ISO/IEC 17025-aligned testing practices and calibrated to meet traceable force and displacement metrology standards, the system implements a rigid four-column load frame architecture with independent vertical and lateral actuation channels. Its core measurement principle relies on synchronized closed-loop control of axial compressive force (via a high-capacity hydraulic cylinder) and lateral shear force (via a precision single-shear actuator), enabling simultaneous acquisition of load–deformation hysteresis loops, secant stiffness, energy dissipation capacity, and nonlinear viscoelastic response under static, quasi-static, and low-frequency cyclic protocols. The system is explicitly configured for standardized evaluation of seismic isolation bearings, bridge expansion joints, and base-isolation systems used in civil infrastructure.
Key Features
- Modular dual-axis servo-hydraulic actuation: Independent 500 kN–3000 kN axial compression capacity and 200 kN–1000 kN single-shear capacity, scalable by frame configuration
- High-rigidity four-post steel frame with preloaded tie rods, minimizing parasitic bending moments during eccentric loading
- Integrated high-resolution load cells (Class 0.5 per ISO 376) and LVDT-based displacement transducers (±0.01 mm resolution) mounted directly at bearing interfaces
- Real-time synchronized data acquisition at ≥1 kHz sampling rate, supporting dynamic parameter extraction including equivalent damping ratio and secant horizontal stiffness
- Thermally stabilized environmental enclosure option (−20 °C to +60 °C) for aging, temperature-dependent, and low-temperature performance validation per GB 20688.1–4 and TB/T 1893
- Compliance-ready control firmware with audit trail logging, user-level access control, and electronic signature support aligned with GLP/GMP documentation requirements
Sample Compatibility & Compliance
The ZYDL system accommodates standard and custom-sized elastomeric bearings ranging from Ø200 mm to Ø1200 mm in plan dimensions and up to 400 mm in total height. It supports full-section testing of pot-type rubber bearings, spherical steel bearings, building seismic isolation bearings, laminated rubber bearings, and lead-rubber bearings (LRBs). All test procedures conform to national and industry standards including GB 20688.1–2007 (Seismic Isolation Rubber Bearings – Test Methods), GB 20688.2–2006 (Bridge Seismic Isolation Bearings), GB 20688.3–2006 (Building Seismic Isolation Bearings), GB 20688.4–2007 (General Rubber Bearings), and TB/T 1893–2006 (Railway Bridge Laminated Rubber Bearings). Optional calibration certificates are traceable to CNAS-accredited reference standards.
Software & Data Management
The proprietary SINOTEST TestMaster™ software provides ISO 17025-compliant test sequencing, real-time visualization of multi-channel force–displacement curves, and automated report generation per standard templates. It supports ASTM E2309-compliant data export formats (CSV, XML, PDF/A-2u), built-in calculation modules for compressive elastic modulus (Ec), shear elastic modulus (G), coefficient of friction (μ), bond strength, and post-aging residual deformation. Audit trails record all operator actions, parameter modifications, and calibration events with time stamps and digital signatures—fully compliant with FDA 21 CFR Part 11 requirements for regulated environments.
Applications
- Determination of compressive and shear elastic moduli under monotonic and cyclic loading per GB 20688 series
- Shear bond integrity testing between rubber layers and steel shims under sustained and fatigue conditions
- Aging performance assessment via accelerated thermal oxidation exposure followed by mechanical re-evaluation
- Low-cycle fatigue life evaluation of isolators subjected to earthquake-spectrum-simulated displacement histories
- Friction coefficient measurement under variable normal stress and sliding velocity conditions
- Validation of numerical models (e.g., finite element simulations) using experimentally derived hysteresis and stiffness degradation data
FAQ
What standards does the ZYDL system support out-of-the-box?
The system includes preconfigured test methods for all GB 20688 parts (1–4) and TB/T 1893–2006, with optional add-ons for EN 1337-3, AASHTO LRFD, and ISO 22762.
Can the system perform dynamic tests at frequencies above 0.1 Hz?
Yes—the single-shear actuator supports sinusoidal, triangular, and arbitrary waveform testing up to 5 Hz with amplitude control within ±1.5% of setpoint.
Is third-party certification available for the system’s force calibration?
All load cells are supplied with NIST-traceable calibration certificates; on-site verification and CNAS accreditation services can be arranged upon request.
Does the software support multi-user role-based permissions?
Yes—administrator, technician, and reviewer roles are enforced with configurable access rights to test setup, execution, and reporting modules.
What is the typical lead time for factory acceptance testing (FAT)?
Standard FAT duration is 5 working days following mechanical installation and hydraulic commissioning; remote participation via secure video link is supported.
