Calculation formula for test results of wire extension rate tester

Calculation formula for test results of wire extension rate tester

Dongguan Haida Instrument 400-071-1808/0769-89280808

Electronic universal material testing machine test results, Jiangsu Tianyuan Test Equipment Co., Ltd. to provide you.

Tensile machine, tensile testing machine calculation formula:

1 Dumbbell test piece cross-sectional area = thickness (cm) × parallel part width (cm) 1KG ≠ 9.8N

2 Tensile strength TB (Kg / cm2) = Maximum tensile force (Kg) F / Test piece cross-sectional area (c m2 ) A

Tensile strength Mpa(N / mm2) = Maximum tensile force (N)F / Test piece cross-sectional area (m m2 ) A

3 Elongation EB (%) = () Distance between punctuation when breaking L1- original reticle distance L0) / distance between original punctuation L0 × 100%

4 Adhesion strength TF (Kg / c m2 ) = maximum force of peeling (Kg) F / test piece width (cm) b

Adhesion strength TF (N / m m2 ) = maximum force of peeling (N)F / test piece width (mm)b

5 tear strength TS (Kg / cm2) = maximum tensile force (Kg) F / specimen thickness (cm) t

Tear strength TS (N / mm2) = maximum tensile force (N) F / specimen thickness (mm) t

6 Tensile stress Mn (Kg / cm2) = Load at specific elongation (N) F / Test piece cross-sectional area (m m2 ) A

Tensile stress Mn (N / mm2) = load at specific elongation (N) F / test piece cross-sectional area (m m2 ) A

( Here, n of Mn represents a specific elongation (%) . For example, M300 represents a tensile stress at an elongation of 300% ) .

7 Elongation (%) = elongation / original length ( pitch spacing ) * 100%

8 Number of test results: There are four test strips, but when it is insufficient, three or even two may be used. In this case, the number of test strips shall be specified.

9 Rally machine calculation formula: Tensile strength and elongation: Tensile strength and elongation, according to the order of magnitude of the measured value. They are S1 , S2 , S3, and S4 , and are calculated as follows: a. Four test pieces: TB or EB=0.5S1+0.8S2+0.1(S3+S4)b. Test piece 3 pieces: TB or EB= 0.7S1+0.2S2+0.1S3c. Two test pieces: TB or EB=0.9S1+0.1S29.3 Stress resistance: The tensile stress is expressed by the average of the measured values. Record: On the test result form, the following items must be recorded:

A. Tensile Strength (Kg / cm2) , Elongation (%) , Tensile Stress (Kg / cm2) .

B. Test Machine Capacity ( Capacity ) . C. Shape of test piece and test piece number. D. Test temperature. E. Other necessary matters.