X hits on this document

112 views

0 shares

0 downloads

0 comments

2 / 26

Manual for Life Cost Based FMEA

TABLE OF CONTENTS

1. INTRODUCTION…………………………………………………………………3

  • 2.

    Failure Mode and Effects Analysis (FMEA)……………………….…….............. 4

    • 2.1

      Function ………………………………………………………………………. 4

    • 2.2

      Potential Failure Mode..……………………………………………………… 5

    • 2.3

      Cause of Failure ……………………………………………………………….5

    • 2.4

      Root Cause of Failure ………………………………………………………. 5

    • 2.5

      Effect of Failure ………………………………………………………………. 5

    • 2.6

      Probability of Occurrence (O) ......................................................................... 6

    • 2.7

      Severity of Effect …………………………………………………………….. 7

    • 2.8

      Dectection Difficulty (D) ……………………………………………………

    • 2.9

      Risk Priority Number (RPN) ……………………………………………….

7 8

2.10 Actions ……………………………………………………………………… 8

3. CONCEPT OF LIFE COST BASED FMEA …………………………………

9

3.1 Cost ……………………………………………………………………… 3.2 Frequency and Probability ...………………………………………………

9 13

4 .AVAILABILITY/RELIABILITY PREDICTIONS ……………………………

14

4.1 .Empirical Data ………………………………………………………………. 16

4.2 4.3

Reliability Estimation from Distributions …………………………………

20

Mixture of Data ……………………………………………………………… 22

5. MONTE CARLO SIMULATION …………………………………………….... 22

    • 5.1

      Modeling Time …………………………………………………………...

    • 5.2

      Modeling MTBF using Weibull Distribution ………………………………

    • 5.3

      Modeling Parts Cost ……………………………………………………….

23 24 24

  • 6.

    HOW TO INTERPRET AND USE RESULTS …………………………….......

    • 6.1

      Higher Reliability …………………………………………………………..

    • 6.2

      Design for Serviceability ……………………………………………………

    • 6.3

      Design Diagnostic Capability..………………………………………………

    • 6.4

      Examples of Regular FMEA and Life Cost-Based FMEA. …………………

25 25 25 25 25

7 . R E F E R E N C E S

…………………………………………

  • ……………………

    26

FMEA MANUAL By S. Rhee and C.M. Spencer

2/26

January 2009

Document info
Document views112
Page views113
Page last viewedFri Jan 20 07:42:47 UTC 2017
Pages26
Paragraphs948
Words9183

Comments