The microcomputer controlled electronic universal testing machine (specialized for geotextiles) is an efficient and accurate professional equipment designed for civil engineering material testing laboratories. Its value lies in its high degree of integration and specialization, integrating standard methods, specialized fixtures, and intelligent software, greatly simplifying the operation process, and ensuring that test results meet national regulatory requirements.
1、 Equipment Overview
This is a vertical electronic universal testing machine that uses a servo motor as the power source and is driven by a precision ball screw pair to achieve the movement and loading of the crossbeam.
2、 Main components and special characteristics of geotextile
1. Host framework:
Adopting a portal (double column) structure.
It has a wide testing space, making it easy to install wide specimens and conduct tensile tests with large strokes.
2. Loading system (servo motor+screw):
The power source is a servo motor, which has precise control and fast response.
Smooth operation, no oil pollution, very suitable for testing materials like geotextiles.
The speed control range is wide, allowing for both fast conventional stretching and slow creep testing.
3. Microcomputer control system and software:
This is the core manifestation of 'specificity'. The software is pre-set with relevant national standard methods for geotextile testing, and operators only need to call the corresponding program.
Specialized software functions:
Pre established standards: such as GB/T 15788, GB/T 14800, SL/T 235, JTGE 50 and other geosynthetic material testing standards.
Automatic calculation: Automatically calculate indicators such as tensile strength, fracture strength, elongation, tear strength, CBR bursting strength, joint/seam strength, etc.
Fixed elongation force value: automatically measures the tensile force at a specific elongation rate (such as 2%, 5%, 10%).
Wide strip stretching: The software supports the processing of test data for wide strip specimens (such as 200mm wide).
4. Special fixtures and accessories:
Stretching fixture:
Mechanical wedge fixture: the most commonly used, using the principle of inclined self-locking to clamp the specimen, suitable for most geotextiles.
Pneumatic flat fixture: By uniformly clamping the sample with air pressure, it can effectively prevent the sample from slipping and the jaws from breaking, especially suitable for high-strength geotextiles and geogrids.
Jaws: Usually equipped with coarse tooth surfaces or protective layers (such as sandpaper, rubber pads) to increase friction and prevent sample damage and slippage.
Other testing attachments:
CBR bursting test device: used to test the bursting strength of geotextiles.
Tear fixtures (trapezoidal, tongue shaped): used for Elmendorf tear and tongue shaped tear testing.
Puncture fixture: used to test puncture strength.
Strip stretching fixture: used for narrow strip stretching.
3、 Main testing items (based on national standards)
This device can be used to perform the following common tests on geotextiles:
1. Wide strip tensile test (such as GB/T 15788)
2. Strip tensile test
3. CBR top burst test
4. Tear strength test (trapezoidal method, tongue method)
5. Puncture test
6. Joint/seam strength test
7. Creep performance test (requires a long-term constant temperature environmental chamber)
4、 Core advantages
Strong professionalism: Both software and hardware are tailored for geotextile testing, with simple operation and reliable results.
High precision and wide range: The electronic universal testing machine has very high precision in the range of small and medium force values, and precise speed control, suitable for various testing needs of geotextiles.
Efficient data processing: The software automatically generates reports and directly provides calculation results that meet standard requirements, greatly improving detection efficiency.
Clean and environmentally friendly: There is no risk of hydraulic oil leakage, and the working environment is clean.
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