The collation process of test data of electronic universal testing machine

No matter what industry test, sorting out test data is a necessary and important process. Our company's technical staff are based onUniversal testing machineThe industry process summarizes the following simple methods for sorting out the test machine test process:

Calculation formula of tensile testing machine:

1. The cross-sectional area of ​​the dumbbell-shaped test piece = thickness (cm) × parallel part width (cm) 1KG≠9.8N

2. Tension strength TB (Kg/cm2) = tension force (Kg)F/test piece cross-sectional area (cO)A

Tensile strength Mpa (N/mm2) = tension force (N)F/test piece cross-sectional area (mO)A

3. Elongation EB ( % ) = () Pinpoint distance L1 - original pinpoint distance L0)/originpoint distance L0×100%

4. Adhesion strength TF (Kg/cO) = peeling force (Kg)F/test piece width (cm)b

Adhesion strength TF (N/mO ) = peeling force (N)F/test piece width (mm)b

5. Tear strength TS (Kg/cm2) = tension force (Kg)F/sample thickness (cm)t

Tear strength TS (N/mm2) = tension force (N)F/sample thickness (mm)t

6. Tensile stress Mn(Kg/cm2) = load (N)F/sectional area of ​​test piece (mO)A at a specific elongation

Tensile stress Mn(N/mm2) = load (N)F/sectional area of ​​test piece (mO)A at a specific elongation

(The n-system of Mn here represents a specific elongation (%), for example, the M300-system represents tensile stress when elongation is 300%.)

7. Elongation (%) = elongation amount/original length (clip spacing) * 100%

8. Number of test results: 4 test pieces are specified, but if there are insufficient test pieces, 3 or even 2 can be used. In this case, the number of test pieces must be indicated.

9.Tension testerCalculation formula: Tensile strength and elongation: Tensile strength and elongation are arranged in order of the measured value. They are S1, S2, S3 and S4, and are calculated according to the following calculations: a. When there are 4 test pieces: TB or EB=0.5S1+0.8S2+0.1(S3+S4) b. 3 test pieces: TB or EB=0.7S1+0.2S2+0.1S3 c. 2 test pieces: TB or EB=0.9S1+0.1S2 9.3 Stress Resistance: Tensile stress is represented by the average value of the measured value. Record: On the test result table, the following items must be recorded:

A. Tensile strength (Kg/cm2), elongation (%), tensile stress (Kg/cm2).

B. Capacity (capacity) of the test machine. C. The shape and number of the test piece. D. Test temperature. E. Other necessary matters