SUNS UTM7305Z05 Dual-Mode Compression & Flexural Testing Machine

Overview

The SUNS UTM7305Z05 Dual-Mode Compression & Flexural Testing Machine is an integrated, dual-station mechanical testing system engineered for high-reproducibility static mechanical characterization of rigid construction materials. It operates on the principles of controlled displacement and closed-loop load regulation, conforming to standardized force application protocols defined in ISO 7500-1, ASTM E4, and GB/T 228.1. The machine features two physically independent test zones—compression and flexural—within a single robust frame, eliminating cross-test reconfiguration delays and minimizing operator-induced variability. Its modular load train incorporates precision-ground ball screws for vertical actuation, high-stiffness cast-iron structural members, and a dual-channel digital servo controller capable of synchronized or independent control of compression platen movement and flexural roller positioning. Designed specifically for quality control laboratories in cement, precast concrete, and geotechnical material production facilities, the UTM7305Z05 delivers traceable, audit-ready results compliant with ISO/IEC 17025 requirements when operated under documented procedures.

Key Features

• Dual-test-zone architecture: Simultaneous readiness for compression (300 kN capacity) and three-point bending (10 kN capacity) without mechanical retooling
• Single-range force transduction: Full-scale measurement from 1% to 100% FS with 1/300,000 internal resolution, eliminating range-switching artifacts and hysteresis errors
• ISO 7500-1 Class 1 certified load cell (optional Class 0.5 upgrade available), calibrated per ISO 376 and traceable to NIM (China National Institute of Metrology)
• Mechanically adjustable platens via precision recirculating ball screw system; 240 mm maximum open height and 100 mm total travel with position repeatability ±0.02 mm
• Flexural fixture geometry strictly adheres to ASTM C78, ISO 679, and GB/T 17671 specifications: fixed 100 mm support span, 94 mm loading head spacing, φ10 mm hardened steel rollers (60 mm length)
• Load rate control over 0.02–2% FS/s in both compression and flexural modes, programmable in discrete steps or continuous ramp profiles
• Integrated overload protection: hardware-limited torque cutoff, emergency stop circuitry compliant with IEC 60204-1, and software-based force ceiling enforcement

Sample Compatibility & Compliance

The UTM7305Z05 accommodates standard cylindrical (e.g., φ100 × 200 mm concrete specimens) and prismatic (e.g., 40 × 40 × 160 mm cement mortar beams) geometries without auxiliary adapters. Compression platens (φ110 mm) meet ASTM C39/C109 flatness and parallelism tolerances (≤0.02 mm deviation). Flexural rollers are surface-hardened to ≥60 HRC and mounted on low-backlash linear guides to ensure uniform moment distribution. The system supports full compliance with GB/T 50081 (Chinese Standard for Concrete Mechanical Properties), ISO 679 (Cement Strength Testing), ASTM C39 (Concrete Cylinders), ASTM C78 (Flexural Strength of Concrete), and EN 12390-3. All calibration certificates include uncertainty budgets per GUM (JCGM 100) and are valid for 12 months under standard environmental conditions (20 ± 2°C, RH ≤ 70%).

Software & Data Management

Control and data acquisition are managed via SUNS TestMaster v4.2 software, a Windows-based platform supporting multi-user role permissions (Operator, Technician, Administrator). The software implements 21 CFR Part 11-compliant electronic signatures, audit trails with immutable timestamps, and encrypted raw data storage in .tdf binary format (with ASCII export options). Real-time load–displacement curves are displayed with dual-axis scaling, automatic peak detection, and modulus calculation per ASTM E111 (static Young’s modulus from stress–strain linear region). Test reports are auto-generated in PDF/X-3 format, embedding calibration metadata, environmental logs, and pass/fail status against selected standards. Data export supports CSV, Excel (.xlsx), and XML for LIMS integration. Software validation documentation (IQ/OQ/PQ protocols) is provided upon request for GLP/GMP-regulated environments.

Applications

• Compressive strength determination of Portland cement mortars and concretes per ISO 679 and GB/T 17671
• Flexural (modulus of rupture) testing of concrete beams per ASTM C78 and EN 12390-5
• Static elastic modulus measurement via secant modulus calculation at 40% of ultimate load (ASTM C469)
• Rock compressive strength evaluation for quarry quality assurance (ISRM suggested methods)
• Prequalification testing of grouts, shotcrete, and fiber-reinforced cementitious composites
• Third-party certification testing for CE marking of construction products under CPR (Regulation (EU) No 305/2011)

FAQ

Does the UTM7305Z05 require separate calibration for compression and flexural modes?

No—the integrated load cell is calibrated across its full 300 kN range; flexural measurements derive force values from the same transducer, ensuring metrological continuity.
Can the system perform cyclic or fatigue tests?

No—this is a static-only machine designed for quasi-static monotonic loading per ISO 7500-1. For dynamic or fatigue applications, SUNS recommends the UTM9000 series with electro-hydraulic actuation.
Is remote diagnostics supported?

Yes—TestMaster includes secure remote access via TLS 1.2 encrypted VNC tunnel, enabling real-time technical support and firmware updates without local IT intervention.
What environmental conditions are required for ISO-compliant operation?

Ambient temperature 20 ± 2°C, relative humidity ≤70%, vibration isolation (floor acceleration <0.01 g RMS), and power supply stability ±1% voltage fluctuation.
Are custom fixtures available for non-standard specimen geometries?

Yes—SUNS offers engineering consultation and CNC-manufactured fixtures (e.g., split-disk, Brazilian tensile, or wedge-split configurations) with full dimensional inspection reports and calibration traceability.