تحقیق درمورد آنالیز حالات بالقوه شکست وخرابی

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فرمت فایل:Word (قابل ویرایش و آماده پرینت)

تعداد صفحه113

فهرست مطالب

مقدمه..................................................................................................6

1-1سیری در نگرش به کیفیت.......................................................................................................................7

.1-2مدیریت کیفیت جامع..............................................................................................................................8

1-3نگرش تولید بی نقص................................................................................................................................9

1-4استاندارد های نظام کیفیت....................................................................................................................10.

13………………………………………………………………………FMEA2-معرفی

...........................................................................................................................13FMEAمعنی و مفهوم1-2

....................................................................................................................................14FMEAتاریخچه2-2

........................................................................................................................................14FMEA2-3هدف

......................................................................................................................................15 FMEA2-4ویژگی

5-2کاربرد FMEA......................................................................................................................................16

2-6تاثیر FMEA بر نرخ خرابی محصول...................................................................................................16

7-2مراحل تهیه FMEA ...........................................................................................................................17

8-2فواید اجرای FMEA ................... ......................................................................................................18

).................................19System-FMEA کاربرد آنالیز حالات بالقوه خرابی در طراحی سیستم( 3

تعریف سیستم.......................................................................................................................................20 1-3

2-3تعریف System-FMEA...................................................................................................................20

3-3خروجی System-FMEA...................................................................................................................21

3-4فواید اجرای System-FMEA..........................................................................................................21

3-5نام اجزای سیستم یا زیر سیستم ها/تشریح عملکرد .......................................................................22

3-6حالات بالقوه خرابی ..............................................................................................................................22

3-7آثار بالقوه خرابی ..................................................................................................................................22

3-8شدت.....................................................................................................................................................22

3-9علل بالقوه خرابی .................................................................................................................................23

3-10وقوع ....................................................................................................................................................24

3-11کنترلهای جاری (متدها و روشهای نشحیص) ....................................................................................26

3-12رتبه تشخیص......................................................................................................................................26

3-13محاسبه RPN.....................................................................................................................................26

3-14اقدامات پیشنهادی............................................................................................................................ 27

3-15تجدید نظر در RPN .........................................................................................................................28

29………….(Design-FMEA) کاربرد آنالیز حالات بالقوه خرابی در طراحی قطعه / محصول4

4-1مبنا و هدف از تهیه FMEA ..............................................................................................................30

4-2تعریف حالات بالقوه خرابی .................................................................................................................31

4-3تعریف DFMEA................................................................................................................................31

4-4کاربردهای DFMEA ........................................................................................................................32

4-5فواید استفاده از DFMEA...............................................................................................................32.

4-6مشتری در DFMEA.........................................................................................................................32

4-7نقطه شروع کار...................................................................................................................................33

4-8آثار بالقوه حالات خرابی ....................................................................................................................34

4-9شدت (Severity) .............................................................................................................................35

4-10کلاسه بندی........................................................................................................................................35

4-11علل بالقوه خرابی .............................................................................................................................37

4-12وقوع .................................................................................................................................................38

4-13کنترلهای جاری در طراحی..............................................................................................................39

4-14تشخیص.............................................................................................................................................41

4-15نمره ریسک پذیری خرابی (RPN) ................................................................................................42

4-16اقدامات پیشنهادی...........................................................................................................................43

17-4نتایج اقدامات انجام شده..................................................................................................................44

خلاصه.........................................................................................................................................................45

46  ............................. (Process-FMAE)کاربرد آنالیز حالات بالقوه خرابی در فرآیندهای تولید5

1-5چرا از Process FMEA استفاده می کنیم؟.....................................................................................47

2-5حالت خرابی در فرآیند.......................................................................................................................47

3-5تعریف Process FMEA..................................................................................................................47

4-5کاربردهای PFMEA .........................................................................................................................47

کاربرد PFMEA در صنعت خودرو..........................................................................................................48

5-5فواید بالقوه اجرای PFMEA ...........................................................................................................48

6-5تیم PFMEA ....................................................................................................................................49

7-5نقطه شروع کار....................................................................................................................................49

8-5مراحل طراحی PFMEA ..................................................................................................................49

5-9آثار بالقوه خرابی .................................................................................................................................50

5-10شدت ...................................................................................................................................................51

5-11کلاسه بندی.........................................................................................................................................55

5-12علل بالقوه خرابی................................................................................................................................55

5-13رتبه وقوع............................................................................................................................................56

5-14کنترلهای جاری فرآیند  .....................................................................................................................57          

5-15رتبه تشخیص (Detection) ...........................................................................................................58

5-16محاسبه نمره ریسک پذیری خرابی (RPN) ...................................................................................59

5-17اقدامات پیشنهادی/اصلاحی (Recommended Actions) ..........................................................60

5-18مسئول و زمان اقدام پیشنهادی .......................................................................................................61

خلاصه: .......................................................................................................................................................62

63 ........... (Machinery-FMEA) کاربرد آنالیز حالات بالقوه خرابی در طراحی ماشین آلات و ابزارهای تولید

6-1تعریف MFMEA ...............................................................................................................................64

6-2فواید اجرای MFMEA ..................................................................................................................... 64

6-3تشریح مفاهیم ستون های یک فرم MFMEA.................................................................................65

6-3-1نام زیر سیستم و تشریح عملکرد...................................................................................................65

6-3-2حالات خرابی در ماشین..................................................................................................................66

6-4اثر خرابی در ماشین .............................................................................................................................66

6-5شدت ....................................................................................................................................................66

6-7وقوع حالت خرابی ..............................................................................................................................68

6-8کنترل  های طراحی/کنترل های ماشین ............................................................................................68

6-9تشخیص.................................................................................................................................................69

6-10نمره ریسک پذیری خرابی RPN.......................................................................................................69

6-11اقدامات اصلاحی پیشنهادی................................................................................................................69

.........................................72. (Service-FMEA) در ارائه خدمات کاربرد آنالیز حالات بالقوه خرابی

7-1تعریف Service-FMEA.....................................................................................................................73

7-2اهداف اجرای Service-FMEA..........................................................................................................74

..................................................................................74.Service-FMEA3تشخیص ستونهای یک فرم-7

7-4شرح عملکرد (وظیفه) خدمت..............................................................................................................74

7-5حالات خرابی بالقوه ..............................................................................................................................75

7-6آثار بالقوه خرابی ..................................................................................................................................75

7-7مشخصه های بحرانی............................................................................................................................76

8-7شدت ....................................................................................................................................................76

9-7علل بالقوه خرابی .................................................................................................................................78

10-7وقوع.....................................................................................................................................................78

7-11روشهای کنترل (تشخیص) .................................................................................................................79

7-12رتبه تشخیص .......................................................................................................................................81

7-13نمره ریسک پذیری (RPN) ..............................................................................................................82

-714اقدامات پیشنهادی.............................................................................................................................83

-715تاریخ تکمیل و مسئول اجرا...............................................................................................................83

-716ثبت نتایج اقدامات اجرا شده: ...........................................................................................................83

17-7تجدید نظر در RPN...........................................................................................................................84

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           &nbs