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Component FMEA (failure mode and effect analysis) analysis level division method and system

A component and level technology, applied in the field of component failure analysis, can solve problems such as component FMEA analysis, and achieve accurate reliability analysis and accurate results

Inactive Publication Date: 2014-12-03
FIFTH ELECTRONICS RES INST OF MINIST OF IND & INFORMATION TECH
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Problems solved by technology

[0005] Based on this, it is necessary to address the problem that the existing FMEA hierarchical division method cannot accurately perform FMEA analysis on components, and provide a component FMEA analysis hierarchical division method and system for accurate FMEA analysis of components

Method used

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  • Component FMEA (failure mode and effect analysis) analysis level division method and system
  • Component FMEA (failure mode and effect analysis) analysis level division method and system

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below according to the drawings and embodiments. It should be understood that the specific implementations described here are only used to explain the present invention, not to limit the present invention.

[0025] Such as figure 1 As shown, a component FMEA analysis hierarchical division method, including steps:

[0026] S100: Decompose the component into one or more functional units according to the failure location of the component, wherein the functional unit has an independent failure mechanism.

[0027] The failure mechanism refers to the actual cause of the failure of electronic components, that is, the physical or chemical process that causes the failure of electronic components, usually due to design weaknesses (combination of materials that are easily changed and deteriorated) or formed in the manufacturing...

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Abstract

The invention provides a component FMEA (failure mode and effect analysis) analysis level division method and system. The component FMEA (failure mode and effect analysis ) analysis level division method comprises the following steps: according to the failure parts of a component, the component is divided into functional units with independent failure mechanisms; according to the component failure information and pre-arranged level division requirements, a lowest analysis level is combined through lowest functional unit combination; the failure effect of the lowest analysis level is determined; when failure effect of a previous analysis level is analyzed, the failure mode of the lowest analysis level serves as the failure effect, and further the failure effect analysis is conducted; the steps are repeated in the same way, so as to determine the failure effect to the entire component; according to the failure effect to the entire component, a reliability analysis is conducted on the component; in the whole process, the component is divided into analyzable functional units, so as to facilitate the FMEA analysis on the component from the failure mechanism of the functional units. The component FMEA analysis level division method and system is conducive to the command of weak links in the internal failure of the component, thereby obtaining true and accurate failure effect of the component and conducting accurate reliability analysis on the component.

Description

technical field [0001] The invention relates to the technical field of component failure analysis, in particular to a component FMEA analysis level division method and system. Background technique [0002] Before the system applies FMEA (Failure Mode and Effect Analysis, Failure Mode and Effect Analysis), the system should be decomposed into more basic elements according to the level. Then, the analysis begins with the lowest-level elements. The effect of a failure mode at a lower level may become the cause of a failure mode of a higher level product. Analysis proceeds in a bottom-up manner until the ultimate impact of the system is identified. The agreement and division of levels is the key link in carrying out FMEA. [0003] According to the needs of the analysis, the product level is divided according to the relative complexity of the product or the functional relationship. These levels are divided from more complex systems to relatively simple parts. At present, FMEA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/00
Inventor 陈媛来萍黄云何小琦
Owner FIFTH ELECTRONICS RES INST OF MINIST OF IND & INFORMATION TECH
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