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A data processing method for static welding force of electrical contact materials based on Weibull distribution

A technology of electrical contact materials and Weibull distribution, applied in the direction of applying stable tension/pressure to test the strength of materials, etc., can solve the problems of data singleness, shorten the test time, etc., achieve high fitting accuracy, shorten the test time, The effect of saving test cost

Active Publication Date: 2017-01-25
ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, and to provide a static welding force data processing method for electric contact materials based on Weibull distribution, which can be processed simultaneously according to the effective data and failure data obtained by the test , which overcomes the defect of singleness of normal distribution processing data, greatly shortens the experimental time and saves the experimental cost under the premise of ensuring that the experiment can obtain enough effective data

Method used

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  • A data processing method for static welding force of electrical contact materials based on Weibull distribution
  • A data processing method for static welding force of electrical contact materials based on Weibull distribution
  • A data processing method for static welding force of electrical contact materials based on Weibull distribution

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment one: figure 2 For AgNi electrical contact material Weibull complete data statistics method, get figure 2 Proceed as follows:

[0028] Step 1: The number of static welding force experiments for AgNi electrical contact materials is n=30, and the obtained data are shown in the following table:

[0029] Number of experiments Static welding force (g) 1 584 2 1111 3 865 4 521 5 518 6 1005 7 846 8 253 9 435 10 1077 11 374 12 478 13 790 14 809 15 1133 16 540 17 191 18 453 19 170 20 1122 21 676 22 1129 23 436 24 278 25 482 26 451 27 431 28 365 29 787 30 577

[0030] Step 2: There is no failure data in the experimental data, m=100%;

[0031] Step 3: There is no failure data in the experimental data, adopt the Weibull complete data statistical method, and the independent variable X takes the value of 1 / ...

Embodiment 2

[0035] Embodiment two: image 3 For AgCdO electrical contact material Weibull complete data statistical method, get image 3 Proceed as follows:

[0036] Step 1: The number of static welding force experiments of AgCdO electrical contact material n=40, the obtained data are shown in the following table:

[0037] Number of experiments Static welding force (g) 1 149 2 333 3 288 4 569 5 457 6 81 7 992 8 72 9 842 10 385 11 36 12 80 13 395 14 0 15 763 16 0 17 348 18 369 19 280 20 201 21 589 22 59 23 0 24 0 25 612 26 160 27 672 28 390 29 632 30 417 31 620 32 621 33 762 34 370 35 299 36 357 37 191 38 646 39 0 40 122

[0038] Step 2: There are failure data in the experimental data, m=87.5%;

[0039]Step 3: There are failure data in the experimental data, using the Weibull...

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Abstract

The invention discloses a method for processing static welding force data of electric contact materials based on Weibull distribution. The electric contact static welding force test device can apply pressure to the dynamic and static contacts and then load a specified current after closing, and then pass a certain The pulling force separates the dynamic and static contacts to measure the value of the static welding force of the electrical contact material. The present invention includes five steps: Step 1: Static fusion welding force data collection of electric contact materials; Step 2: Determine the data characteristics; Step 3: Determine the data statistics method, that is, the Weibull complete statistical method is used for no failure data, and the Weibull complete statistical method is used for failure data. Weibull incomplete statistical method; step 4: data fitting processing; step 5: determine the confidence to get the best value, and get the best value of the static welding force data of the electric contact material according to the fitting result. The present invention is based on Weibull probability statistics, and under the premise of ensuring that the experiment can obtain effective data, it greatly shortens the test time and saves the test cost. Provide technical support for the development of electrical appliances industry.

Description

technical field [0001] The invention belongs to the field of material performance testing, and specifically refers to a method for processing static welding force data of electric contact materials based on Weibull distribution. Background technique [0002] The electrical contact material is an important factor affecting the reliability of the switch electrical contact system. In the selection and development of electrical contact materials, the influence of the thermal, electrical, and mechanical properties of the material itself on the contact resistance, hot-melt welding, erosion, and electrical life during the working process must be considered comprehensively, and according to various switches According to the different requirements of electrical appliances for electrical contact materials, materials should be selected or developed reasonably. The electrical contact material used as a switch, due to the inrush current generated when the power is turned on, and the sho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08
Inventor 王珩李素华刘立强翁桅柏小平林万焕
Owner ZHEJIANG FUDA ALLOY MATERIALS TECH CO LTD
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