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Acceleration checking test method of failure rate of electric connector

A technology for electrical connectors and verification tests, which is applied in the field of timed censored accelerated verification tests, and can solve problems such as impracticability, cost, and long test time

Inactive Publication Date: 2007-08-15
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0040] As can be seen from the above example, it often takes a long time to test and verify the reliability of products under normal stress levels, which is impossible to implement in engineering practice

Method used

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  • Acceleration checking test method of failure rate of electric connector
  • Acceleration checking test method of failure rate of electric connector
  • Acceleration checking test method of failure rate of electric connector

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Embodiment Construction

[0069] In the accelerated test to quickly assess the failure rate level of the electrical connector under accelerated conditions, it is necessary to determine the acceleration coefficient a of the electrical connector in advance Ti～T0 . Because the present invention is based on the timing censoring verification test scheme, the censoring time τ of the test is divided by the acceleration coefficient a Ti～T0 To obtain the time-censored accelerated verification test scheme of failure rate. Therefore, when determining the test plan, the accelerated test temperature level T of the electrical connector must first be selected i , and the accelerated test temperature level T i Once selected, it must not be changed during accelerated verification testing.

[0070] Secondly, after selecting the producer risk a and the consumer risk β, determine the sample size n and the maximum allowable number of failures c, and then according to the formula

[0071] ...

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Abstract

This invention discloses one electrical connector invalid speed validation method, which comprises the following steps: firstly converting the store temperature in TO into test temperature level Ti invalid rate oflambada'(t); then comparing the Ti with T0 to get identification ratio to repress store temperature T0 invalid scheme as speed test one in level of Ti; then guiding test temperature level of Ti speed test scheme with store temperature level specimen terminate time relation asTau'=Tau / alphaTi-T0 and then taking test temperature of Ti to get terminate time relation speed parameteralphaTi-T0 to determine the terminate time of the level Ti.

Description

technical field [0001] The invention relates to a time-censored accelerated verification test method for quickly evaluating the failure rate grade of an electrical connector. Background technique [0002] The electrical connector is an important supporting component of the aerospace system. It is widely used in various models of aerospace. It is required to reliably communicate circuits and transmit information under various harsh environments and harsh conditions. Failure will cause the system to malfunction. Due to batch, cycle and other reasons, it is often impossible to provide information about the storage period and reliability level of electrical connectors, and there is no test method for verifying the storage life and reliability of electrical connectors during the storage period. . In order to evaluate the reliability level of the electrical connector, a time-censored verification test method with failure rate as the verification index is adopted. [0003] The f...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 陈文华钱萍崔杰卢献彪周升俊
Owner ZHEJIANG UNIV
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