Автоматическая машина для испытаний на изгиб с открытой рамой - тип C

C-Type Flexural Testing Frame is a test system developed to determine the flexural strength of concrete, mortar, stone, paving blocks, and structural slab specimens with high precision. With its open-front C-Frame design , operator access to the specimen is simplified; heavy specimens can be positioned quickly and safely. The device manages the entire process fully automatically — from load application and fracture detection to result calculation and reporting. The open-body design saves space in the laboratory while providing long-term accuracy through high rigidity and low frame deformation. Throughout the test cycle, load application is controlled directly via a load-cell-based measurement chain, ensuring that true force values are used, independent of hydraulic pressure fluctuations.

C-Type Frame Structure & Mechanical Design

YKMTEST Automatic Flexural Testing Frame – C Type features a welded monoblock open-frame structure manufactured from high-strength steel plates. The C-type structure provides a wide loading area and greatly simplifies specimen placement. This layout is ideal for heavy or wide specimens such as concrete beams, paving stones, curb blocks, and ceramic slabs. The open frame allows front-side operator access, enabling the specimen to be placed in the test zone without the need for lifting accessories.

Automatic Hydraulic Loading Unit

The device operates through an automatic hydraulic power unit equipped with quiet-running pumps and electronic valves. The pump ensures stable hydraulic flow, while the controller maintains a constant loading rate; the microprocessor-controlled system adjusts loading rate in real time. This design complies with all international test standards requiring constant loading rate. The hydraulic system ensures safe operation with over-pressure protection, automatic zeroing, and oil-level indication. After the loading phase, the system automatically depressurizes and becomes ready for the next test cycle.

Operator Panel & Software

C-Type Automatic Flexural Testing Frame is controlled through the SenseProC touchscreen operator panel. Test parameters, load–time graph, and maximum load value are displayed in real time. The operator can select support span, loading rate, test type, and specimen dimensions directly from the screen. Fully integrated operation is provided with SenseProFlex PC software. When connected to a computer, tests can be started and monitored remotely, and results are automatically archived. The software includes test history, graphical analysis tools, and customizable report templates. Reports may be exported in PDF, Excel, or CSV formats. With a 10-point calibration function, separate accuracy curves can be created over  different loading ranges. Calibration is performed through the software, and calibration data are stored in the device memory.

Loading / Support System

Loading arms and support heads are manufactured from heat-treated, hardened steel. Support span is adjustable between 100–1000 mm. The loading system can be used with two-point or four-point flexural configurations. Articulated loading heads ensure axial distribution of applied forces. The rigid C-frame and single-piece base minimize frame deflection, ensuring axial-fidelity load transfer and producing accurate and repeatable results. The loading system employs hardened and ground cylindrical rollers; smooth contact surfaces prevent edge crushing. Lower rollers feature stepless span adjustment, and scale markings on the frame provide precise positioning. The upper head is designed to allow fast switching between center-point and third-point loading configurations. A spherically seated loading head compensates for minor alignment deviations, preserving the contact line. Connection ports for LVDT/encoder units are provided for mid-span deflection measurements; high-resolution feedback enables displacement-controlled test scenarios. Hydraulic power unit and servo control maintain constant loading rate per standards; maximum force is captured at failure and flexural strength is immediately calculated in MPa. Method templates, specimen dimensions, and target loading rates are selected via the touchscreen HMI; real-time load–time and load–deflection graphs are displayed. Data output is transferred via USB/Ethernet in LIMS-compatible format; user authorization and audit-trail features support quality assurance.

Safety & Maintenance

The safety system includes a transparent protective enclosure, door-lock interlock switch, emergency stop, and stroke/overload limits. Corrosion-resistant surface coating, smooth contact regions, and wide service access ensure fast cleaning and minimal maintenance. The machine accommodates common beam sizes and is configured to meet the loading-rate, contact-geometry, and alignment requirements of international procedures (e.g., EN 12390-5, ASTM C78/C293).