Computerized Universal Testing Machine

1.Model:WDW-100

2.Product name:computerized electrical universal testing machine

3. Applications of testing machine
This machine is applicable to metal, cementing compound, tubes, sectional bars, aerospace, petrochemical, waterproof rolls, wire and cable, textile, fiber, rubber, ceramics, food, mechanical packaging, geo-textile, film, wood, paper and other industries and quality supervision department, and it also can be used in college for teaching demonstration.

4. Features of testing machine
1) Adopting aluminum alloy cover, with attractive streamline structure

2) Mainly used to test mechanical properties for metal, non-metal and composite materials

3) Adopting precision auto control and data acquisition system to realize fully digital adjustment to data acquisition and control process. During test, it can test max. Bearing tensile force, compression force, tensile strength, deformation, elongation, yield point and other technical specifications

4) After test, the above parameters can be calculated automatically through main controller according to the test parameters, which are set before test and meantime display the corresponding test results. All test parameters can be saved and inquired after test, also can be printed out.

5) With remote control box to realize speed adjustment of crossbeam, flexibly and freely switched

6) With functions of automatic return to original position, intelligently, efficiently, quickly

7) With limit position function of any working position and over voltage, over current protection functions, reliable and safe

8) With many control modes of constant speed control to force, stress, deformation, strain and low cycle and user self-programming control

9) Switch among many test curves: stress-strain curve, load-deformation curve, load-displacement curve, load-time curve, deformation-time curve, displacement-time curve. Partial enlargement, overlap and comparison.

5.Spec. of testing machine

We have been in this line for many years, our products is very competitive and resonable .


Wooden cases, 100kg, 620x460x1530

200 tones in different models. Portable models are very convenient and useful for site use where carrying frequently the specimens for testing in a standard laboratory is inconvenient and uneconomical. With special attachments, the machines can also be used for bricks, hallow or solid concrete blocks, using appropriate capacity machine. In general compression testing machine consists of a load frame with suitable platens and a pumping unit with pressure gauge, either hand operated or electrically-cum-hand operated. Load frame and pumping unit are connected by pressure pipes.

Wooden packing

1.Description
Chase friction testing machine is used to evaluate the frictional characteristics of material in braking system in accordance with the SAE J661,GB 5763-2018 and GB/T 17469-2012.
Chase machine is suitable for small bench test of M1, M2, N1, O1 and O2 vehicles brake linings.
This machine is widely used for product formulation R&D, Quality control and Certification etc.
2.Principle
A constant pressure is applied to the sample,which will be pressed against the inner surface of the friction drum which rotates at a certain speed, so a friction force will be generated along the tangent direction of the contact surface. The friction

coefficient of the tested sample can be determined by measuring the pressure and friction force.
During the test, the Chase friction tester controls the temperature change at any time according to the requirements. The drum outer ring is used to assist the heating tube heating and the back suction cooling, so that the temperature change at the sample is stable and the temperature measurement accuracy is higher.
3.Features
(1)Loading by Pneumatic servo with high precision control.
(2)Temperature of friction drum is adjustable to adapt to different test requirements and different climatic condition.
(3)Rubbing speed can be set freely between 0 and 1000 RPM.
(4)The maximum load is up to 2000N.
(5)This machine is controlled by PC. Speed, loads, temperature and test time can be preset by software. Test results are saved in computer.
4.Standards
SAE J661, SAE J866, GB 5763-2018, GB/T 17469-2012,
5.Specifications
Speed 0 to 1000 RPM
Load 0 to 2000 N
Temperature 0-600 (1112)
Heating power 6KW
Friction drum Ф277mm
Power AC 380V
Weight Approximate 2100kg

1. Size of concrete specimens for compression strength test
Concrete cubic specimen: 150X150X150mm, 100X100X100mm, 200X200X200mm
Cylindrical concrete specimen: diameter 150X300mm, diameter 100X200mm, diameter 200X400mm
2. Brief introduction of concrete compressive strength test procedure
1) Placing the concrete specimen---place the test specimen on the lower bearing block. Carefully align the axis of the specimen with the center of thrust of the spherically seated block.
2) Apply the load continuously and without shock until the specimen fails and record the maximum load carried by the concrete specimen during the test. Note the type of failure and the appearance of the concrete.
3.Relative test method
GB/T 50081 standard for test method of mechanical properties on ordinary concrete
ASTM C39 standard test method for compressive strength of cylindrical concrete
ASTM E74 practice of calibration of force-measuring instruments for verifying the force indication of testing machine
4. Specifications for concrete compressive strength testing machine
Max. capacity: 3000KN( lower or higher capacity can make to order)
Grade of testing machine: grade 1
Distance between upper and lower compression platen: 320mm
Stroke of piston:50mm
Size of upper and lower compression platen:375X375mm
Weight :about 900kg

1. Introduction and test principle of compression strength measuring
The compression testing machine is to measure compression strength of corrugated boxes in the situation of pressure and protect functions of packages for the objects filled in the packages.

Test principle:
(1) Corrugated boxes compression strength test, loading to the corrugated boxes using a compression testing machine at a certain constant rate untill corrugated boxes are broken or till certain load or displacement are reached.
(2) Corrugated boxes stacking test, loading a certain force to the corrugated box using a compression testing machine untill corrugated box is broken or sustain a certain time period.
When measuring deformation of corrugated box during compression test, an original load should be set as a datum point. The datum point can refer to the following chart:
Average compression force(N)Original force(N)
101-200 10
201-1000 25
1001-2000 100
2001-10000 250
10001-20000 1000
200001-100000 2500
2. Functions of compression testing machine
This machine is applicable to metal, cementing compound, tubes, sectional bars, aerospace, petrochemical, waterproof rolls, wire and cable, textile, fiber, rubber, ceramics, food, mechanical packaging, geo-textile, film, wood, paper and other industries and quality supervision department, and it also can be used in college for teaching demonstration.
3. Specification of compression testing machine
1 Max. Load 20KN
2 Resolution of test force 1/300000
3 Resolution of displacement 0.001mm
4 Precision of crossbeam displacement 0.5%
5 Precision of deformation 0.5%
6 Measuring range of test force 1%-100%FS
7 Relative error of test force 1%
8 Relative error at zero point 0.5%
9 Speed of crossbeam 0.01-500mm/min
10 Precision of crossbeam speed 1%
11 Speed range of load 0.005%-5%FS/s
12 Precision of load speed When speed is less than 0.05FS/s, precision is within 1% of set value, when speed is more than 0.05FS/S, precision is within 0.5% of set value

13 Speed of deformation 0.005%-5%FS/s
14 Precision of deformation speed When speed is less than 0.05FS/s, precision is within 1% of set value, when speed is more than 0.05FS/S, precision is within 0.5% of set value

15 Stroke of crossbeam 900mm
16 Effective tensile height 650mm
17 Effective test span 400mm
18 Effective compression height 800mm
19 Diameter of compression platen 100mm
20 Voltage and power 220V,50Hz, 700W
21 Dimension of main machine 650X450X1650mm
22 Weight of main machine about 300kg

2. This testing machine mainly use computer and software to control the whole system, which can make the accuracy more precise. The hydraulic cylinder is imported from germany, which is high flow, good circularity and high availability. This machine can be used to test the heavy duty springs of haulage motor. This machine can adopt the electro-hydraulic servo testing system to operate.
3. The all parts of equipment can be maintained and repaired. The main functions of this machine is as follows, it can use fixed deformation or fixed load. Measurement system can be automatic zero, automatic calibration. Computer real-

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