1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2006 6 2 http:/www.kats.go.kr KS A 5608 2 2: KS A 5608 2: 2006 (2012 ) A 5608 2: 2006 : ( ) ( ) ( ) : (http:/www.standard.go.kr) : :2006 6 2 :2012 12 29 2012-837 : : ( 02-509-7294) (http:/www.kats.go.kr). 10 5 , . ICS 19.080 KS 2: A 5608 2: 2006(2012 ) Acce
2、lerated life test Part 2: Design of accelerated life test (accelerated test) . (life cycle) , . . . . , , . , B10 . 1. . 1: , 3: . 2. . . KS A 3004 KS A IEC 60812 (FMEA) 3. . 3.1 (iem) , , , , , , , . . 3.2 (performance) , , . 3.3 (failure) . . A 5608 2: 2006 2 3.4 (life) , , , (on-off) . 3.5 (accel
3、erated life test) , . 3.6 AF (acceleration factor) (Td) (Ta) , AF Td/Ta3.7 (stress) , 3.8 (accelerating stress) 3.9 , Td AFTa 3.10 (failure mechanism) , , , , 3.11 (overstress failure mechanism) (strength) 3.12 (wearout failure mechanism) , 3.13 (failure mode) (symptom) , , , , , , , . 3.14 (degrada
4、tion) (performance) 3.15 (specification limit) 3.16 (operating limit) , (LOL: Lower Operating Limit) (UOL: Upper Operating Limit) . 3.17 (operating margin) 3.18 (destruct limit) (LDL: Lower Destruct Limit) (UDL: Upper Destruct Limit) . 3.19 (destruct margin) 3.20 (mean time to failure) . 3.21 B100p
5、p . 3.22 (median life) 50 % 50 % . , B50 . A 5608 2: 2006 3 4. 1 . 4.1 4.2 4.3 4.4 4.5 1 4.1 . , . . FMEA RPN(Risk Priority Number) . . 4.2 . . . . 4.3 , . , , , (operating limit) . . . 4.4 ( ) . 2 3 . 2 3 2 . 4.4.1 2 (SH) (SL) . SH . SL . , SH , SL . SL 8. . 4.4.2 3 A 5608 2: 2006 4 (SH), (SL), (SM
6、) . Sh Sl 2 , SM SH SL (Sh Sl)/2 . 3 Meeker Hahn 8. . 2 2 3 4.4.3 2 , . 2 3 , 2 . . SH SL . . 3 . 3 2 . . , . . SHSLSHSMSL(SH, VH)(SH, VL)(SL, VH)(SL, VL) A 5608 2: 2006 5 . 4.5 , . B10 ( ) , 5 . 2 , 6 4 . , . Sl 8. . 5. 5.1 (failure mechanism) . 1 . 1. (failure mode) (symptom) . , . 2. . . 5.2 (ove
7、rstress failure) (wearout failure) . , ( ) . , (strength) . , , , , , , . , , . . A 5608 2: 2006 6 1 , ( ) , IC ( ) (pad) Al ( ) , IC ( ) PN , , ( EOS) IC Al (EOS) IC PN ( ) IC PN , IC Al IC Al (IC ) , (IC ) ( ) IC PN IC IC ( ) IC , , , . 4 . A 5608 2: 2006 7 4 . , . 5.3 . , , . , . . . , , . FMEA R
8、PN(Risk Priority Number) . 6. 6.1 , , , . . A , B . 6.2 , . 2 . , (fatigue) (creep) (wear) (whisker) (diffusion) Kirkendall (void) (corrosion) , CFF (degradation) A 5608 2: 2006 8 2 , (thermal crack) , , , . . FMEA , . 7 . , , (cell) . 3 , . 3 ( / / ) No. / 1 2 3 4 5 6 33 13 25 21 26 40 44 17 31 23
9、14 : (9), : (5), : (3) 7. . (shift) , . . , . , . . , . A 5608 2: 2006 9 D , , , . . 8. , (Sh) , (Sl) . , . 8.1 . 2 3 , . . - . . 100P B100P . 8.2 D, L, M, H (design), (low), (middle), (high) SL, SM, SH (low), (middle), (high) L (SL SD)/(SH SD): L L P . , P 0.1 B100P B10 . pD SD pH SH 8.3 2 (optimum
10、 plan) 2 SH SL (SH) 5 SL L . B100P ( SL) L . 5 a) pD, pH . SHSL1 L LA 5608 2: 2006 10 b) ( ) . c) C.1 ( ) C.2 ( ) P, pD, pH LL . d) L SL . e) L SL , 1 L SH . 50 B10 100 6 . - 120 , , - . 50 6 , 0.001 , 120 6 0.90 . a) P 0.10, pD 0.001, pH 0.90 b) : c) A.1 L 0.682 L 0.706 d) 1/( ) . SD 1/(50 273) 0.0
11、03 096, SH 1/(120 272) 0.002 545 . L (SL SD)/(SH SD) SL SD (SH SD)L , SL 0.003 096 (0.002 545 0.003 096)0.682 0.002 72 . 1/(TL 273) 0.002 72 TL95 . e) 95 100 70 % 70 , 120 30 . 8.4 3 2 - . Meeker Hahn 6 3 . L, M, H . M M (L H)/2 . L, M, H 4: 2: 1 . L B100P . 6 Meeker-Hahn 3 7 . a) pD, pH . b) ( ) . c) C.3 C.4 P, pD, pH (optimized) 4: 2: 1 L . d) pLP/3 E(r*L)5 (adjusted) 4: 2: 1 L M . pL (SL) , E(r*L) 1 000 H M LA 5608 2: 2006 11 . e) L M SL SM . SL, SM, SH 4: 2: 1 . 7 Meeker-Hahn 9. . , . , , . . . . a)