WDW-20D

Microcomputer controlled electronic universal testing machine

3、 Applicable standards:

GB/T 2611-2007 General Technical Requirements for Testing Machines

JB/T 7406.1-1994 "Terminology of Testing Machines - Material Testing Machines"

GB/T 16491-2008 "Electronic Universal Testing Machine"

GB/T 16825.1-2008 "Inspection of Static Uniaxial Testing Machines Part 1:

Inspection and Calibration of Force Measuring Systems for Tensile and/or Compressive Testing Machines

GB/T 22066-2008 "Evaluation of Computer Data Acquisition System for Static Uniaxial Testing Machine"

JJG 139-1999 "Tensile, compressive, and universal material testing machines"

JB/T 6146-2007 "Technical Conditions for Stretchers"

JB/T 6147-2007 "Technical Requirements for Packaging, Packaging Marking, Storage and Transportation of Testing Machines"

GB/T 328.8-2007 Test Methods for Building Waterproofing Membrane Part 8: Asphalt Waterproofing Membrane

Tensile Properties

GB/T 18173.1-2012 "Polymer Waterproof Materials Part 3: Water swelling Rubber"

4、 Product functions and features:

Product Features:

WDW-20D is a new generation microcomputer controlled electronic universal testing machine. Mainly used for testing mechanical performance indicators such as tension, compression, bending, shear, peeling, and tearing of various metal, non-metal, and composite materials. The system adopts microcomputer closed-loop control, which has a wide and accurate loading speed and force measurement range, and has high accuracy and sensitivity in measuring and controlling loads and displacements. This equipment is suitable for manufacturing industries such as metals, adhesives, pipes, profiles, aerospace, petrochemicals, waterproofing membranes, wires and cables, textiles, fibers, rubber, ceramics, food, pharmaceutical packaging, geotextiles, films, wood, paper, as well as product quality supervision departments at all levels. It is also suitable for teaching demonstrations in colleges and universities.

The design of the testing machine host has the characteristics of beautiful appearance, easy operation, stable and reliable performance, no pollution, low noise, and high efficiency. The design of the auxiliary equipment is matched with the host, with a wedge-shaped translational structure and manual rotation clamping, and the sample is not subjected to additional force. Convenient, reliable, and non slip clamping.

The testing machine adopts Taiwan Dongyuan Company's digital AC servo speed control system with high speed regulation accuracy and stable performance, and the motor as the driving system; Specially designed synchronous toothed belt reduction system and ball screw pair drive the movement of the testing machine's moving crossbeam; The control and data processing software based on database technology using Windows as the operating platform adopts virtual instrument technology instead of traditional digital tubes and oscilloscopes, realizing the screen display of test force, peak test force, beam displacement, sample deformation, and test curve. All test operations can be completed on the computer screen by mouse input, with a good human-machine interface and convenient operation; The dual channel fully digital programmable amplifier inserted into the PC realizes true physical zeroing, gain adjustment, and automatic shifting, zeroing, and calibration of test force measurement, without any analog adjustment links. The control circuit is highly integrated, completely eliminating mechanical adjustment devices such as potentiometers, with a simple structure and reliable performance. The comprehensive application of the above technologies ensures that the machine can achieve closed-loop control of parameters such as test force, sample deformation, and beam displacement, and can perform tests such as constant force, constant displacement, constant strain, constant velocity load cycle, and constant velocity deformation cycle. Users can use the PC expert system to independently set control modes such as constant stress, constant strain, and constant displacement, and smoothly switch between various control modes. The program control mode meets the requirements of the national standards GB/T 328.8-2007 "Test Methods for Building Waterproofing Rolls Part 8: Tensile Properties of Asphalt Waterproofing Rolls" and GB/T 18173.1-2012 "Polymer Waterproof Materials Part 3: Water swelling Rubber", and achieves data processing that complies with various standards such as GB, ISO, JIS, ASTM, DIN, etc., especially with good scalability. The processing results can be stored on disk in ASCII code form. This provides convenience for post-processing such as reanalysis of experimental data, database management, and network transmission.

Due to the automatic control of the testing process and the information processing of the test results, the testing machine enables operators to conveniently and autonomously set the test program control steps. During the tensile test, the tester can clearly observe the entire testing process of the material.

Configure an environmental testing chamber system to test the physical and mechanical properties of materials at different environmental temperatures.

6、 Product standard technical parameters:

（1） Host parameters:

Stretching stroke: 0-880mm;

Compression stroke: 0-880mm;

Maximum travel of crossbeam: 1200mm;

Test width: 370mm;

Maximum speed for adjusting the crossbeam: 500 mm/min;

（2） Measurement parameters:

Maximum test force: 20 KN

◆ Testing machine level: Level 0.5

Measurement accuracy of test force: better than ± 0.5% of the indicated value;

◆ Test power resolution: 1/1000000 of full range (there is only one resolution across the full range, without grading);  

Displacement resolution: 0.002mm;

Displacement measurement accuracy: ± 0.5%;

Deformation resolution: 0.001mm;

Relative error of deformation indication: within ± 0.5%;

（3） Control parameters:

Test force measurement range: 2% -100% FS

Deformation measurement range: 1-100% FS;

◆ Force controlled speed adjustment range: 0.005-5% FS/S;

Relative error of force control rate: within ± 1% of the set value;

◆ Deformation rate adjustment range: 0.02-5% FS/S;

Relative error of deformation control rate: When the rate is less than 0.05% FS, it is within ± 2% of the set value;

When the rate is ≥ 0.05% FS, it is within ± 0.5% of the set value;

Measurement range of beam speed: 0.005-500mm/min;

Relative error of crossbeam speed: within ± 1.0% of the set value when the speed is less than 0.01 mm/min;

When the speed is ≥ 0.01 mm/min, within ± 0.2% of the set value;

Constant force, constant deformation, and constant displacement control range: 0.5% to 100% FS;

Constant force, constant deformation, and constant displacement control accuracy: within ± 0.2% of the set value when the set value is ≥ 10% FS; When the set value is less than 10% FS, within ± 1% of the set value;

（4） Machine parameters:

◆ Host size: 720 × 460 × 1895mm;

Power supply: three-phase 380V; 0.75kW;

Equipment weight: approximately 600Kg;

◆ Operating environment: no vibration, no dust; Room temperature (10-35 ℃); Humidity<70%; There is no vibration around, no corrosive medium, and no strong magnetic field interference; The fluctuation of power supply voltage shall not exceed 10% of the rated voltage.