Qhov sib txawv tseem ceeb ntawm FMEA thiab DFMEA yog FMEA yog siv rau cov khoom, cov txheej txheem thiab cov kev pabcuam hauv cov koomhaum thaum DFMEA tsuas yog siv rau kev tsim cov khoom.
Muaj ob hom FMEA (Failure Mode Effects Analysis): DFMEA thiab PFMEA. DFMEA sawv cev rau Kev Tshawb Fawb Kev Ua Haujlwm Tsis Ua Haujlwm Thaum PFMEA sawv cev rau Kev Ua Haujlwm Tsis Ua Haujlwm Kev Tshawb Fawb. Ntxiv mus, FMEA yog ib txoj hauv kev uas peb tuaj yeem soj ntsuam hauv kev tsim khoom thiab engineering; lawv txo cov peev txheej tsis ua haujlwm ntawm lawv lub tshuab nrog rau kev khiav hauj lwm thiab tsim cov nqi.
FMEA yog dab tsi?
FMEA sawv rau Failure Mode Effects Analysis. FMEA yog ib txoj hauv kev zoo tshaj plaws los txheeb xyuas txhua qhov ua tsis tiav hauv kev tsim qauv, kev ua haujlwm tsis tiav hauv kev ua haujlwm lossis cov txheej txheem sib dhos, lossis cov khoom lossis kev pabcuam. Cov txheej txheem ntawm FMEA categorizes tag nrho cov kev ua tsis tiav raws li qhov ua tau thiab qhov ua tsis tiav. "Failure mode" yog hais txog tej yam tsis xws luag los yog ua yuam kev hauv kev tsim, txheej txheem, lossis cov khoom, uas cuam tshuam rau tus neeg siv khoom. Lub caij no, kev txheeb xyuas qhov cuam tshuam yog hais txog kev kawm txog qhov tshwm sim ntawm qhov ua tsis tiav.
Tsis tas li ntawd, FMEA sau cov ntaub ntawv kev paub thiab kev ua haujlwm uas muaj feem cuam tshuam txog kev pheej hmoo ntawm kev ua tsis tiav thiab siv lawv rau kev txhim kho txuas ntxiv. FMEA feem ntau pib ntawm qhov ntxov tshaj plaws theoretical theem ntawm kev tsim thiab txuas ntxiv mus thoob plaws lub neej ntawm cov khoom lossis kev pabcuam.
Tsis tas li ntawd, FMEA yog ib txoj hauv kev zoo uas txheeb xyuas qhov ua rau muaj peev xwm ua ntej kom cov lapses loj tuaj yeem raug kho raws li kom tsis txhob muaj kev cuam tshuam loj. Daim ntawv thov no tau siv dav hauv kev tsim khoom lag luam.
FMEA yog siv rau hauv cov xwm txheej hauv qab no:
1. Ua ntej tshaj tawm cov txheej txheem tshiab, khoom, lossis kev pabcuam.
2. Thaum siv cov txheej txheem uas twb muaj lawm, khoom, lossis kev pabcuam hauv txoj kev tshiab
3. Ua ntej tsim cov phiaj xwm tswj hwm rau tus txheej txheem tshiab lossis hloov pauv
4. Raws li kev txhim kho txuas ntxiv rau cov txheej txheem uas twb muaj lawm
5. Thaum rov hais dua cov lus tsis txaus siab lossis tsis ua haujlwm raug tshaj tawm hauv cov khoom lag luam, txheej txheem lossis kev pabcuam
6. Kev tshuaj xyuas raws sijhawm thoob plaws hauv lub neej ntawm cov txheej txheem, khoom, lossis kev pabcuam
DFMEA yog dab tsi?
DFMEA sawv cev rau Kev Tsim Kho Tsis Ua Haujlwm Kev Tshawb Fawb. Cov txheej txheem no tuaj yeem txheeb xyuas qhov ua tsis tiav hauv cov khoom tsim khoom ntawm theem kev txhim kho. Qhov tseeb, DFMEA tau siv thawj zaug hauv kev tshawb fawb foob pob hluav taws los tiv thaiv kev ua tsis tiav. Niaj hnub no, ntau lub lag luam siv cov txheej txheem no los txheeb xyuas cov kev pheej hmoo, siv cov tshuaj tiv thaiv thiab tiv thaiv kev ua tsis tiav. Feem ntau, cov engineers siv qhov no los ua tus txheej txheem los tshawb nrhiav qhov ua tau ntawm kev tsim tsis ua haujlwm hauv qhov xwm txheej tiag tiag.
Ua ntej, DFMEA txheeb xyuas tag nrho cov qauv tsim, hom kev ua tsis tiav thiab lawv cov teebmeem rau cov neeg siv khoom nrog rau qhov sib piv hnyav. Tom ntej no, nws txheeb xyuas lawv cov hauv paus hauv paus thiab cov txheej txheem ntawm qhov ua tsis tiav. Cov qib siab yuav ua rau muaj kev ua kom zam los yog txo qis qhov ua rau tsim hom tsis ua haujlwm. Tom qab ua qhov kev pom zoo ua rau pom qhov ua tsis tiav, cov kauj ruam tom ntej yog muab piv rau cov nqi ua ntej thiab tom qab RPN. RPN stands rau Risk Priority Number, uas yog qhov sib npaug ntawm qhov hnyav, tshwm sim thiab kuaj pom.
Tsis tas li ntawd, cov cuab yeej tseem ceeb siv rau DFMEA yog DFMEA matrix. Cov matrix no nthuav tawm cov qauv rau kev sau thiab sau cov ntaub ntawv muaj feem xyuam nrog rau cov kev qhia tshwj xeeb, hnub teeb meem, hnub hloov kho, thiab cov tswv cuab hauv pab pawg. Feem ntau, DFMEA yog pab pawg ua haujlwm ntawm cov kws tshaj lij thiab feem ntau suav nrog pab pawg ua haujlwm sib luag. Tsis tas li ntawd, DFMEA tsis tso siab rau cov txheej txheem tswj kom kov yeej kev tsim tsis tau.
Kev sib raug zoo ntawm FMEA thiab DFMEA yog dab tsi?
FMEA yog cov txheej txheem dav dav ntawm Failure Mode Effects Analysis. DFMEA yog ib hom kev tsis ua hauj lwm hom kev tsom xam (FMEA) ua rau kev tsim cov khoom ntawm kev tsim kho theem. Ob leeg ntsuas qhov ua tsis tau tiav, qhov hnyav ntawm qhov txaus ntshai, kev tswj hwm uas twb muaj lawm, cov lus pom zoo thiab kev txhim kho tom qab tau pom zoo ua.
Ntxiv mus, lub hom phiaj kawg ntawm kev ua tsis tiav hom kev tsom xam yog txhawm rau txo lossis tsis txhob muaj kev cuam tshuam loj ntawm cov khoom, txheej txheem lossis cov kev pabcuam, uas yuav ua rau tus nqi tsim lossis kev ua haujlwm thaum kawg.
Qhov txawv ntawm FMEA thiab DFMEA yog dab tsi?
FMEA yog cov lus siv dav dav rau Kev Tshawb Fawb Kev Ua Haujlwm Tsis Ua Haujlwm thaum DFMEA yog hom FMEA. Tsis tas li ntawd, qhov sib txawv tseem ceeb ntawm FMEA thiab DFMEA yog lawv daim ntawv thov. FMEA methodology yog siv rau cov khoom, cov txheej txheem thiab cov kev pab cuam hauv cov koom haum thaum DFMEA tsuas yog siv rau kev tsim cov khoom.
Summary – FMEA vs DFMEA
Qhov sib txawv tseem ceeb ntawm FMEA thiab DFMEA yog FMEA sawv cev rau Kev Tshawb Fawb Kev Ua Haujlwm Tsis Ua Haujlwm thiab nws yog lub hauv paus ntawm cov txheej txheem thaum DFMEA sawv cev rau Kev Tsim Tsis Ua Haujlwm Hom Kev Tshawb Fawb thiab nws yog hom FMEA.
