1. Purpose

    WDW series microcomputer-controlled electronic universal testing machine (geotextile series * door structure) , mainly used for stretching, bursting, and puncturing various glass fiber geotextiles, plastic warp-knitted geotextiles, geosynthetics, and geogrids Testing of mechanical performance indicators. The precise automatic control and data acquisition system realizes the fully digital adjustment of the data acquisition and control process. In the test, the technical indicators such as the maximum load-bearing tensile force, pressure, tensile strength, compressive strength, elongation deformation and elongation of the material are tested. The above detection parameters are automatically calculated by the computer according to the test parameter conditions set at the beginning of the test after the test is over, and the corresponding test results are displayed at the same time. The test parameters can be queried and displayed after the test is over, or connected to a printer for printout.

2. Features

1. With a remote control box, it can realize the fast/slow lifting adjustment of the beam, and the operation is flexible and can be switched at will.

2. With the function of returning to the initial position after the test, it is intelligent, efficient and fast.

3. With limit protection function and overload and over current protection function at any working position, it is reliable and safe.

4. Self-built powerful test database, test data can be saved, inquired and recalled at any time

5. It can realize constant rate force control, constant rate stress control, constant rate deformation control, constant velocity strain control, constant rate stroke control, load constant velocity control, elongation constant velocity control, displacement constant velocity control, low cycle cycle control and users Various control methods such as self-programming control.

6. Can switch to display a variety of test curves : stress-strain curve, force-deformation curve, force-displacement curve, force-time curve, deformation-time curve, displacement-time curve, force-strain curve. The test curve is partially enlarged, and multiple curves are superimposed and compared.

7. The addition of accessories can also complete the testing and testing of other materials such as tension, compression, bending, and torsion

3. The design, manufacture, and inspection of the testing machine are based on the relevant provisions of the following standards

1. GB/T2611-2007 "General Technical Requirements for Testing Machines"

2. GB/T16491-2008 "Electronic Universal Material Testing Machine"

3. JJF1103-2003 "Evaluation of Computer Data Acquisition System for Universal Testing Machine"

4. GB/T13763-1992 Geotextile tearing strength test method by trapezoidal method

5. GB/T 19470-2004 Geosynthetics Plastic Geonet

6. JT/T520-2004 highway engineering geosynthetics, staple fiber needle punched non-woven geotextile

7. GB/T17690-1998 Plastic flat wire woven geotextile

8. GB/T 1040.1-2006 "Determination of tensile properties of plastics Part 1: General rules of test methods"

9. JTJ239-98 Technical Specification for Waterway Engineering Fabric Application

10. JC839.1-1998 glass fiber geogrid for pavement

11. JJG139-1999 "Verification Regulations for Tension, Pressure and Universal Testing Machines"

Third, the main technical indicators of the testing machine