Modo de falla y efecto

FMEA

FAILURE MODE AND EFFECTS ANALYSIS

CONTENT TABLE

General information 1
Brief introduction 1
History 1
Manual format 1
Implementation 1

Design DFMEA 3

Introduction 4
Client definition 4
Team Effort 4

Development of a design DFMEA 5
1) DFMEA number 5
2) Name and number of System,Sub-system or
Component 6
3) Responsibility of the Design 6
4) Prepared by 6
5) Final destiny 6
6) Key date 6
7) DFMEA date 6
8) Team 6
9) Article/ function 6
10) Potential mode of failure 6
11) Potential effects of failure 7
12) Severity 7
Suggested criteria of evaluation 8
13)Classification 8
14) Potential cause/ Failure mechanism 8
15) Occurrence 9
Suggested criteria of evaluation 10
16) Design controls 10
17) Detection 10
Suggested criteria of evaluation 11
18) Risk priority number (RPN) 11
19) Recommended actions 11
20) Responsibilities for the recommended action 12
21) Taken action 12
22) ResultingRPN 12
Following 12

PFMEA of process 13

Introduction 14
Client definition 14
Team Effort 14

Development of a PFMEA of process 15
1) PFMEA number 15
2) Article 15
3) Process responsibility 15
4) Prepared by 15
5) Final destiny 15
6) Key date 15
7) PFMEA date 15
8)Team 15
9) Process/ Requirements function 16
10) Failure Potential Mode 16
11) Failure Potential effects 16
12) Severity 17
Suggested criteria of evaluation 18
13) Classification 18
14) Failure potential mechanisms/causes 19
15) Occurrence 19
Suggested criteria of evaluation 20
16) Actual controls of the process 20
17)Detection 20
Suggested criteria of evaluation 21
18) Risk priority number (RPN) 21
19) Recommended actions 22
20) Responsibilities for the recommended action 23
21) Taken action 23
22) Resulting RPN 23
Following 23

APPENDIX

A Example of a blocks diagram of a Design DFMEA 24
B Example of a DFMEA of complete design 25
C Example of aflow chart of Risk Process/Evaluation
DFMEA 26
D Example of a PFMEA of complete process 27
E Glossary 28
F Form for Design DFMEA 30
G Form for Process PFMEA 31

GENERAL INFORMATION

Brief introduction
This manual introduces to the Failure mode and effects analysis (FMEA) and it provides a general guide in the application of this technique. FMEA can bedescribed as a group of systematic activities with the intention of:

1. Recognize and evaluate the potential failure of a product/process and its effects.
2. Identify actions that could eliminate or reduce the probability that it happens a potential failure
3. Documenting the process

This is complementary to the design process where it defines what it should do a design in order tosatisfy to the customer.

History
The usage of FMEA analysis, it’s nothing new. The engineers have been using it for some time; however, the first formal application of the FMEA discipline was an innovation of the aerospace industry during the 60’s.

Manual format
For an easy use, this manual of reference contains the instructions in order to repair the FMEA such as the design as for theprocess. Having these two sections in the same manual, it makes easier the comparison of these techniques used for the development of the different types of FMEA and in order to demonstrate more clearly its correct application and inter-relation.

Implementation
Due to the commitment that many companies have in order to improve their products, the necessity to use the FMEA as a technique or...