CN104166800A - Component FMEA analysis method and system based on failure mechanisms - Google Patents
Component FMEA analysis method and system based on failure mechanisms Download PDFInfo
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Abstract
The invention provides a component FMEA analysis method and system based on failure mechanisms. FMEA structure division is carried out on a component, the component is decomposed into functional units, each functional unit has one independent failure mechanism, the failure mechanism of each functional unit is analyzed, failure modes causing the failure mechanisms are analyzed, influences of the failure mechanisms and the failure modes on the component are analyzed, a failure physical model is built according to the failure mechanisms of the functional units, failure reasons resulting in the failure mechanisms are analyzed according to the failure physical model, and component failure influence analysis results and the failure reasons resulting in the failure mechanisms are integrated to obtain an FMEA analysis result, so that reliability of the component is improved. The start of FMEA analysis of the whole component is the failure mechanisms, on the basis of failure mechanism recognition, the failure physical model is analyzed, acceleration factors of the failure mechanisms are analyzed, reliability of the component is accurately and deep analyzed and the reliability condition of the component is accurately reflected.
Description
Technical field
The present invention relates to components and parts FAILURE ANALYSIS TECHNOLOGY field, particularly relate to components and parts FMEA analytical approach and system based on failure mechanism.
Background technology
FMEA (Failure Mode and Effect Analysis, failure modes and effects analysis) the existing history for many years of technology, in aerospace, electronic equipment and automobile industry, widely apply, for improving the safety and reliability of Related product, play larger facilitation, obtained good economic results in society.
FMMEA (Failure Mode, Mechanism and Effects Analysis, failure mode, mechanism and impact analysis) compares with traditional FMEA, has increased the anatomy of failure mechanism and definite failure physical model and parameter.Regard as the potential failure point such as components and parts all on electronic product, parts and interconnection, analyze failure mode, failure mechanism that these potential failure points may exist, then according to the environmental baseline of product life cycle and working stress, determine contingent inefficacy, and collect the parameters such as material in physical model, structure, technique.
Existing FMEA and FMMEA method are mainly for complete machine and large system, for components and parts not exclusively applicable, if adopt existing FMEA and/or FMMEA method to carry out fail-safe analysis to components and parts, will inevitably there is larger error, cannot accurately reflect component reliability situation.
Summary of the invention
Based on this, be necessary that for existing FMEA and FMMEA method be mainly for complete machine and large system, cannot make FMEA accurately for components and parts analyzes, the problem that cannot accurately reflect component reliability situation, provides a kind of and can make components and parts FMEA analytical approach and the system based on failure mechanism that FMEA accurately analyzed, accurately reflected component reliability situation to components and parts.
A components and parts FMEA analytical approach based on failure mechanism, comprises step:
Components and parts are carried out to the division of FMEA structure, described components and parts are decomposed into one or more functional unit, wherein, described functional unit has independently failure mechanism;
Analyze the failure mechanism of functional unit described in each, and analyze the failure mode that described failure mechanism causes;
Analyze failure mechanism and the impact of described failure mode on described components and parts of described functional unit, obtain components and parts failure effect analysis result;
According to the failure mechanism of described functional unit, build the failure physical model of described functional unit, according to the failure physical model of described functional unit, analyze the failure cause that causes described failure mechanism;
Integrate described components and parts failure effect analysis result and the failure cause that causes described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism.
A components and parts FMEA analytic system based on failure mechanism, comprising:
FMEA structure is divided module, for components and parts being carried out to the division of FMEA structure, described components and parts is decomposed into one or more functional unit, and wherein, described functional unit has independently failure mechanism;
Analysis of Failure Mechanism module, for analyzing the failure mechanism of functional unit described in each, and analyzes the failure mode that described failure mechanism causes;
Failure effect analysis module, for analyzing failure mechanism and the impact of described failure mode on described components and parts of described functional unit, obtains components and parts failure effect analysis result;
Failure cause analysis module, for according to the failure mechanism of described functional unit, builds the failure physical model of described functional unit, according to the failure physical model of described functional unit, analyzes the failure cause that causes described failure mechanism;
Integrate module, for integrating described components and parts failure effect analysis result and the failure cause that causes described failure mechanism, obtains the FMEA analysis result of components and parts failure mechanism.
The present invention is based on components and parts FMEA analytical approach and the system of failure mechanism, components and parts are carried out to the division of FMEA structure, components and parts are decomposed into a plurality of functional units, functional unit has independently failure mechanism, analyze the failure mechanism of each functional unit, and analysis causes the failure mode of failure mechanism, the failure mechanism of analytic function unit and the impact of described failure mode on components and parts, obtain components and parts failure effect analysis result, according to the failure mechanism of described functional unit, build the failure physical model of described functional unit, according to the failure physical model of described functional unit, analysis causes the failure cause of described failure mechanism, integrate components and parts failure effect analysis result and the failure cause that causes described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism, improve component reliability.The starting point that whole components and parts FMEA analyzes is failure mechanism, rather than failure mode, on the basis of identification failure mechanism, its failure physical model is analyzed, analyze the speedup factor of failure mechanism, profound level, components and parts are carried out to FMEA accurately and analyze, accurately reflect component reliability situation.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet that the present invention is based on first embodiment of components and parts FMEA analytical approach of failure mechanism;
Fig. 2 is the schematic flow sheet that the present invention is based on second embodiment of components and parts FMEA analytical approach of failure mechanism;
Fig. 3 is the structural representation that the present invention is based on first embodiment of components and parts FMEA analytic system of failure mechanism;
Fig. 4 is the structural representation that the present invention is based on second embodiment of components and parts FMEA analytic system of failure mechanism.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawings and embodiment, the present invention is further elaborated.Should be appreciated that concrete enforcement described herein, only in order to explain the present invention, does not limit the present invention.
As shown in Figure 1, a kind of components and parts FMEA analytical approach based on failure mechanism, comprises step:
S100: components and parts are carried out to the division of FMEA structure, described components and parts are decomposed into one or more functional unit, wherein, described functional unit has independently failure mechanism.
Failure mechanism, refer to the essence reason that causes electronic component failure, cause physics or the chemical process of electronic component failure, typically refer to the latent defect forming due in the weakness in the design combination of deteriorated material (easily change and) or manufacturing process, the inefficacy occurring and mechanism thereof under certain effect of stress.Suppose that current components and parts are integrated circuit, step S100 is exactly, according to the failure site that may exist on surface-mounted integrated circuit, surface-mounted integrated circuit is decomposed into chip (functional unit 1), substrate (functional unit 2) and outer pin (functional unit 3) etc.
S200: analyze the failure mechanism of functional unit described in each, and analyze the failure mode that described failure mechanism causes.
Failure mode is the surface phenomena of product failure or the form of expression of inefficacy.According to the failure mechanism of each functional unit, can corresponding find the failure mode of each functional unit.
S300: analyze failure mechanism and the impact of described failure mode on described components and parts of described functional unit, obtain components and parts failure effect analysis result.
From failure mechanism, analyze on the one hand failure mode that this failure mechanism causes and this failure mechanism, the impact of failure mode on components and parts.
S400: according to the failure mechanism of described functional unit, build the failure physical model of described functional unit, according to the failure physical model of described functional unit, analyze the failure cause that causes described failure mechanism.
Determine on the other hand the failure physical model of this failure mechanism, and by failure physical model analysis, cause the failure cause of this failure mechanism.
S500: integrate described components and parts failure effect analysis result and the failure cause that causes described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism.
Form with FMEA list will be integrated described components and parts failure effect analysis result and cause that the failure cause of described failure mechanism records and integrates, the FMEA that has completed a kind of failure mechanism of functional units of certain components and parts analyzes, and obtains the FMEA analysis result of components and parts failure mechanism.
The present invention is based on the components and parts FMEA analytical approach of failure mechanism, components and parts are carried out to the division of FMEA structure, components and parts are decomposed into a plurality of functional units, functional unit has independently failure mechanism, analyze the failure mechanism of each functional unit, and analysis causes the failure mode of failure mechanism, the failure mechanism of analytic function unit and the impact of described failure mode on components and parts, obtain components and parts failure effect analysis result, according to the failure mechanism of described functional unit, build the failure physical model of described functional unit, according to the failure physical model of described functional unit, analysis causes the failure cause of described failure mechanism, integrate components and parts failure effect analysis result and the failure cause that causes described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism, improve component reliability.The starting point that whole components and parts FMEA analyzes is failure mechanism, rather than failure mode, on the basis of identification failure mechanism, its failure physical model is analyzed, analyze the speedup factor of failure mechanism, profound level, components and parts are carried out to FMEA accurately and analyze, accurately reflect component reliability situation.
As shown in Figure 2, in an embodiment, described S100 specifically comprises step therein:
S120: traversal components and parts, identification components and parts failure site;
S140: according to described components and parts failure site, components and parts are carried out to the division of FMEA structure, described components and parts are decomposed into one or more functional unit.
The position that components and parts may occur to lose efficacy can exist a lot,, needs the whole components and parts of complete traversal here, identifies the failure site of components and parts, to carry out analyzing and processing accurately in subsequent step.
As shown in Figure 2, therein in an embodiment, before described S500, after described S400 also in steps:
S420: analyze the risk class of described failure mechanism to described components and parts, and according to the life cycle of described components and parts, each failure stage to described components and parts carries out risk class assessment, obtain risk class assessment result, wherein, each failure stage of described components and parts comprises infant mortality stage, random failure stage and wearout failure stage.
Analyze the density of infection grade (risk class) of failure mechanism on product failure impact, and according to the product life cycle, be divided into infant mortality stage, random failure stage and wearout failure stage and assess respectively.Accurately components and parts are analyzed comprehensively.
Therein in an embodiment, the described components and parts failure effect of described integration analysis result and described in cause the failure cause of described failure mechanism, the FMEA analysis result that obtains components and parts failure mechanism is specially:
Integrate described components and parts failure effect analysis result, described in cause failure cause and the described risk class assessment result of described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism.
In the present embodiment, except integrating components and parts failure effect analysis result and causing the failure cause of described failure mechanism, be also integrated with risk class assessment result, can be more comprehensive, obtain the FMEA analysis result of component failure mechanism.
In an embodiment, described according to the failure mechanism of described functional unit therein, build the failure physical model of described functional unit, according to the failure physical model of described functional unit, analyze after the failure cause cause described failure mechanism also in steps:
For described failure cause, make innovative approach.
For failure cause, make innovative approach, can when analyzing components and parts failure mechanism, can propose effective innovative approach for the basic reason losing efficacy, improve the reliability of components and parts.
As shown in Figure 3, a kind of components and parts FMEA analytic system based on failure mechanism, comprising:
FMEA structure is divided module 100, for components and parts being carried out to the division of FMEA structure, described components and parts is decomposed into one or more functional unit, and wherein, described functional unit has independently failure mechanism;
Analysis of Failure Mechanism module 200, for analyzing the failure mechanism of functional unit described in each, and analyzes the failure mode that described failure mechanism causes;
Failure effect analysis module 300, for analyzing failure mechanism and the impact of described failure mode on described components and parts of described functional unit, obtains components and parts failure effect analysis result;
Failure cause analysis module 400, for according to the failure mechanism of described functional unit, builds the failure physical model of described functional unit, according to the failure physical model of described functional unit, analyzes the failure cause that causes described failure mechanism;
Integrate module 500, for integrating described components and parts failure effect analysis result and the failure cause that causes described failure mechanism, obtains the FMEA analysis result of components and parts failure mechanism.
The present invention is based on the components and parts FMEA analytic system of failure mechanism, FMEA structure is divided 100 pairs of components and parts of module and is carried out the division of FMEA structure, components and parts are decomposed into a plurality of functional units, functional unit has independently failure mechanism, Analysis of Failure Mechanism module 200 is analyzed the failure mechanism of each functional unit, and analysis causes the failure mode of failure mechanism, the failure mechanism of failure effect analysis module 300 analytic function unit and the impact of described failure mode on components and parts, obtain components and parts failure effect analysis result, failure cause analysis module 400 is according to the failure mechanism of described functional unit, build the failure physical model of described functional unit, according to the failure physical model of described functional unit, analysis causes the failure cause of described failure mechanism, integrate module 500 is integrated components and parts failure effect analysis result and is caused the failure cause of described failure mechanism, the FMEA that obtains components and parts failure mechanism analyzes, improve component reliability.The starting point that whole components and parts FMEA analyzes is failure mechanism, rather than failure mode, on the basis of identification failure mechanism, its failure physical model is analyzed, analyze the speedup factor of failure mechanism, profound level, components and parts are carried out to FMEA accurately and analyze, accurately reflect component reliability situation.
As shown in Figure 4, in an embodiment, described FMEA structure is divided module 100 and is specifically comprised therein:
Recognition unit 120, for traveling through components and parts, identification components and parts failure site;
Resolving cell 140, for according to described components and parts failure site, carries out the division of FMEA structure to components and parts, and described components and parts are decomposed into one or more functional unit.
As shown in Figure 4, in an embodiment, the described components and parts FMEA analytic system based on failure mechanism, also comprises therein:
Risk class evaluation module 600, for analyzing the risk class of described failure mechanism to described components and parts, and according to the life cycle of described components and parts, each failure stage to described components and parts carries out risk class assessment, obtain risk class assessment result, wherein, each failure stage of described components and parts comprises infant mortality stage, random failure stage and wearout failure stage.
Therein in an embodiment, described integrate module specifically for, integrate described components and parts failure effect analysis result, described in cause failure cause and the described risk class assessment result of described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism.
In an embodiment, the described components and parts FMEA analytic system based on failure mechanism, also comprises therein:
Improve module, for making innovative approach for described failure cause.
The above embodiment has only expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. the components and parts FMEA analytical approach based on failure mechanism, is characterized in that, comprises step:
Components and parts are carried out to the division of FMEA structure, described components and parts are decomposed into one or more functional unit, wherein, described functional unit has independently failure mechanism;
Analyze the failure mechanism of functional unit described in each, and analyze the failure mode that described failure mechanism causes;
Analyze failure mechanism and the impact of described failure mode on described components and parts of described functional unit, obtain components and parts failure effect analysis result;
According to the failure mechanism of described functional unit, build the failure physical model of described functional unit, according to the failure physical model of described functional unit, analyze the failure cause that causes described failure mechanism;
Integrate described components and parts failure effect analysis result and the failure cause that causes described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism.
2. the components and parts FMEA analytical approach based on failure mechanism according to claim 1, is characterized in that, described components and parts is carried out to the division of FMEA structure, described components and parts is decomposed into one or more functional unit and specifically comprises step:
Traversal components and parts, identification components and parts failure site;
According to described components and parts failure site, components and parts are carried out to the division of FMEA structure, described components and parts are decomposed into one or more functional unit.
3. the components and parts FMEA analytical approach based on failure mechanism according to claim 1 and 2, it is characterized in that, the described components and parts failure effect of described integration analysis result and described in cause the failure cause of described failure mechanism, obtain before the FMEA analysis result of components and parts failure mechanism also in steps:
Analyze the risk class of described failure mechanism to described components and parts, and according to the life cycle of described components and parts, each failure stage to described components and parts carries out risk class assessment, obtain risk class assessment result, wherein, each failure stage of described components and parts comprises infant mortality stage, random failure stage and wearout failure stage.
4. the components and parts FMEA analytical approach based on failure mechanism according to claim 3, it is characterized in that, the described components and parts failure effect of described integration analysis result and described in cause the failure cause of described failure mechanism, the FMEA analysis result that obtains components and parts failure mechanism is specially:
Integrate described components and parts failure effect analysis result, described in cause failure cause and the described risk class assessment result of described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism.
5. the components and parts FMEA analytical approach based on failure mechanism according to claim 1 and 2, it is characterized in that, described according to the failure mechanism of described functional unit, build the failure physical model of described functional unit, according to the failure physical model of described functional unit, analyze after the failure cause cause described failure mechanism also in steps:
For described failure cause, make innovative approach.
6. the components and parts FMEA analytic system based on failure mechanism, is characterized in that, comprising:
FMEA structure is divided module, for components and parts being carried out to the division of FMEA structure, described components and parts is decomposed into one or more functional unit, and wherein, described functional unit has independently failure mechanism;
Analysis of Failure Mechanism module, for analyzing the failure mechanism of functional unit described in each, and analyzes the failure mode that described failure mechanism causes;
Failure effect analysis module, for analyzing failure mechanism and the impact of described failure mode on described components and parts of described functional unit, obtains components and parts failure effect analysis result;
Failure cause analysis module, for according to the failure mechanism of described functional unit, builds the failure physical model of described functional unit, according to the failure physical model of described functional unit, analyzes the failure cause that causes described failure mechanism;
Integrate module, for integrating described components and parts failure effect analysis result and the failure cause that causes described failure mechanism, obtains the FMEA analysis result of components and parts failure mechanism.
7. the components and parts FMEA analytic system based on failure mechanism according to claim 6, is characterized in that, described FMEA structure is divided module and specifically comprised:
Recognition unit, for traveling through components and parts, identification components and parts failure site;
Resolving cell, for according to described components and parts failure site, carries out the division of FMEA structure to components and parts, and described components and parts are decomposed into one or more functional unit.
8. according to the components and parts FMEA analytic system based on failure mechanism described in claim 6 or 7, it is characterized in that, also comprise:
Risk class evaluation module, for analyzing the risk class of described failure mechanism to described components and parts, and according to the life cycle of described components and parts, each failure stage to described components and parts carries out risk class assessment, obtain risk class assessment result, wherein, each failure stage of described components and parts comprises infant mortality stage, random failure stage and wearout failure stage.
9. the components and parts FMEA analytic system based on failure mechanism according to claim 8, it is characterized in that, described integrate module specifically for, integrate described components and parts failure effect analysis result, described in cause failure cause and the described risk class assessment result of described failure mechanism, obtain the FMEA analysis result of components and parts failure mechanism.
10. according to the components and parts FMEA analytic system based on failure mechanism described in claim 6 or 7, it is characterized in that, also comprise:
Improve module, for making innovative approach for described failure cause.
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| CN113009314A (en) * | 2021-02-07 | 2021-06-22 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Root cause analysis method and device for printed circuit board burning failure |
| CN113705961A (en) * | 2021-07-15 | 2021-11-26 | 东风汽车集团股份有限公司 | Risk level evaluation decomposition method and device based on vehicle powertrain function |
| CN118194583A (en) * | 2024-04-03 | 2024-06-14 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Component structure analysis method, device, computer equipment and storage medium |
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