{"id":19845,"date":"2022-04-14T08:31:46","date_gmt":"2022-04-14T08:31:46","guid":{"rendered":"http:\/\/dgbellvietnam.com\/temperature-cycling-test-main-points\/"},"modified":"2024-10-25T15:05:49","modified_gmt":"2024-10-25T08:05:49","slug":"temperature-cycling-test-main-points","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/temperature-cycling-test-main-points\/","title":{"rendered":"\u0110i\u1ec3m ch\u00ednh c\u1ee7a b\u00e0i th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t"},"content":{"rendered":"
\n

C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00e1c \u0111\u1ed9ng l\u1edbn \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 h\u1ea7u h\u1ebft c\u00e1c s\u1ea3n ph\u1ea9m b\u1ecb h\u1ecfng l\u00e0 do c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng1 Trong g\u1ea7n 20 y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng, \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 chi\u1ebfm kho\u1ea3ng 40% t\u1ed5ng t\u1ef7 l\u1ec7 c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng. Do \u0111\u00f3, vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00e1c th\u00f4ng s\u1ed1 th\u00edch h\u1ee3p theo \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a m\u1eabu v\u00e0 b\u1ea3n th\u00e2n bu\u1ed3ng th\u1eed nghi\u1ec7m l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3 th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9. Hi\u1ec7n nay, c\u00e1c ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 l\u00e0 MIL-STD-883G 1010.8, JESD22-A104-B, v.v., nh\u01b0ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u00e1c th\u00f4ng s\u1ed1 trong t\u1eebng ti\u00eau chu\u1ea9n, v\u00ec v\u1eady vi\u1ec7c ph\u00e2n t\u00edch c\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh c\u1ee7a th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 v\u00e0 l\u1ef1a ch\u1ecdn c\u00e1c ti\u00eau chu\u1ea9n th\u00edch h\u1ee3p c\u00f3 \u00fd ngh\u0129a r\u1ea5t l\u1edbn \u0111\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed v\u00e0 gi\u00e1m s\u00e1t ch\u1ea5t l\u01b0\u1ee3ng s\u1ea3n ph\u1ea9m.<\/span><\/span><\/p>\n

1. Ti\u00eau <\/span>chu\u1ea9n <\/span><\/span>th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9<\/span><\/span><\/a><\/strong><\/span><\/h1>\n

Th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 l\u00e0 \u0111\u1eb7t m\u1eabu v\u00e0o bu\u1ed3ng th\u1eed nghi\u1ec7m v\u1edbi nhi\u1ec7t \u0111\u1ed9 xen k\u1ebd, \u0111\u1ec3 m\u1eabu ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p li\u00ean t\u1ee5c thay \u0111\u1ed5i, v\u00e0 c\u00e1c h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t kh\u00e1c nhau c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u kh\u00e1c nhau \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m cho m\u1eabu b\u1ecb bi\u1ebfn d\u1ea1ng do t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t nhi\u1ec7t; Trong qu\u00e1 tr\u00ecnh k\u00e9o gi\u00e3n v\u00e0 \u0111\u00f9n li\u00ean t\u1ee5c, c\u00e1c v\u1ecb tr\u00ed l\u1ed7i li\u00ean t\u1ee5c \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng v\u1edbi t\u1ea3i c\u1ee7a chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t t\u0103ng v\u00e0 cu\u1ed1i c\u00f9ng ph\u00e1t tri\u1ec3n th\u00e0nh h\u1ecfng h\u00f3c. Do \u0111\u00f3, c\u00e1c khuy\u1ebft t\u1eadt ti\u1ec1m \u1ea9n c\u1ee7a s\u1ea3n ph\u1ea9m c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c khu\u1ebfch \u0111\u1ea1i hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ee7 th\u00f4ng qua th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 lo\u1ea1i b\u1ecf s\u1ea3n ph\u1ea9m d\u1ec5 b\u1ecb h\u1ecfng s\u1edbm v\u00e0 th\u1eed nghi\u1ec7m ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c t\u00ednh ch\u1ea5t \u0111i\u1ec7n v\u00e0 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n \u0111i\u1ec7n t\u1eed.<\/span><\/span><\/p>\n

Hi\u1ec7n nay, c\u00e1c ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u nh\u1ea5t trong c\u00e1c th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 l\u00e0 MIL-STD-883G 1010.8 v\u00e0 JESD22-A104-B.<\/span><\/span><\/p>\n

MIL-STD-883G l\u00e0 phi\u00ean b\u1ea3n m\u1edbi nh\u1ea5t c\u1ee7a ti\u00eau chu\u1ea9n qu\u00e2n s\u1ef1 Hoa K\u1ef3 \u201cTi\u00eau chu\u1ea9n ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m thi\u1ebft b\u1ecb vi \u0111i\u1ec7n t\u1eed\u201d, MIL-STD-883 k\u1ec3 t\u1eeb khi ra \u0111\u1eddi v\u00e0o n\u0103m 1968 \u0111\u00e3 ph\u00e1t tri\u1ec3n \u0111\u1ebfn phi\u00ean b\u1ea3n G ng\u00e0y nay, sau g\u1ea7n 20 l\u1ea7n c\u1ea3i ti\u1ebfn, ban \u0111\u1ea7u ch\u1ee7 y\u1ebfu d\u00e0nh cho thi\u1ebft b\u1ecb qu\u00e2n s\u1ef1, n\u1ed9i dung c\u1ee7a n\u00f3 li\u00ean quan \u0111\u1ebfn th\u1eed nghi\u1ec7m v\u00e0 ki\u1ec3m so\u00e1t v\u1eadt li\u1ec7u thi\u1ebft b\u1ecb vi \u0111i\u1ec7n t\u1eed, ki\u1ec3m so\u00e1t ki\u1ec3m tra thi\u1ebft k\u1ebf, ki\u1ec3m tra v\u00e0 ki\u1ec3m so\u00e1t quy tr\u00ecnh, s\u00e0ng l\u1ecdc, nh\u1eadn d\u1ea1ng v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c, vi\u1ec7c c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady c\u1ee7a thi\u1ebft b\u1ecb vi \u0111i\u1ec7n t\u1eed c\u00f3 vai tr\u00f2 quan tr\u1ecdng, ng\u00e0y nay, MIL-STD-883 \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m m\u00f4 h\u00ecnh cho nhi\u1ec1u ti\u00eau chu\u1ea9n qu\u1ed1c gia trong vi\u1ec7c th\u1eed nghi\u1ec7m c\u00e1c thi\u1ebft b\u1ecb vi \u0111i\u1ec7n t\u1eed c\u00f3 \u0111\u1ed9 tin c\u1eady cao<\/span><\/span><\/p>\n

JESD22 l\u00e0 ph\u1ea7n th\u1eed nghi\u1ec7m \u1ee9ng su\u1ea5t m\u00f4i tr\u01b0\u1eddng c\u1ee7a ti\u00eau chu\u1ea9n JEDEC, JEDEC l\u00e0 ti\u00eau chu\u1ea9n c\u01a1 quan h\u00e0ng \u0111\u1ea7u cho ng\u00e0nh vi \u0111i\u1ec7n t\u1eed, \u0111\u00e2y l\u00e0 ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n cho ng\u00e0nh vi \u0111i\u1ec7n t\u1eed to\u00e0n c\u1ea7u. Theo quan \u0111i\u1ec3m n\u00e0y, MIL STD-883 ph\u1ea3i nghi\u00eam ng\u1eb7t h\u01a1n JEDEC. Trong qu\u00e1 tr\u00ecnh x\u00e2y d\u1ef1ng, JEDEC lu\u00f4n l\u1ea5y nguy\u00ean t\u1eafc c\u00f4ng b\u1eb1ng, hi\u1ec7u qu\u1ea3 v\u00e0 kinh t\u1ebf l\u00e0m nguy\u00ean t\u1eafc, n\u1ed7 l\u1ef1c \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c c\u1ee7a s\u1ea3n ph\u1ea9m, r\u00fat \u200b\u200bng\u1eafn th\u1eddi gian \u0111\u01b0a s\u1ea3n ph\u1ea9m ra th\u1ecb tr\u01b0\u1eddng v\u00e0 gi\u1ea3m chi ph\u00ed ph\u00e1t tri\u1ec3n. C\u00e1c ch\u1ee9c n\u0103ng ch\u00ednh c\u1ee7a ti\u00eau chu\u1ea9n bao g\u1ed3m c\u00e1c thu\u1eadt ng\u1eef, \u0111\u1ecbnh ngh\u0129a, M\u00f4 t\u1ea3 v\u00e0 v\u1eadn h\u00e0nh c\u00e1c \u0111\u1eb7c t\u00ednh s\u1ea3n ph\u1ea9m, bao b\u00ec, ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m, ch\u1ee9c n\u0103ng h\u1ed7 tr\u1ee3 s\u1ea3n xu\u1ea5t, ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a s\u1ea3n ph\u1ea9m, v.v.<\/span><\/span><\/p>\n

2. C\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh<\/span><\/span><\/strong><\/span><\/h1>\n

\u0110\u1ed1i v\u1edbi s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed, t\u00e1c \u0111\u1ed9ng c\u1ee7a \u1ee9ng su\u1ea5t m\u00f4i tr\u01b0\u1eddng do nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i theo chu k\u1ef3 l\u00ean m\u1eabu s\u1ebd kh\u00e1c nhau t\u00f9y theo hi\u1ec7u \u1ee9ng th\u1eed nghi\u1ec7m, d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t l\u1edbn v\u1ec1 t\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc c\u1ee7a m\u1eabu (nh\u01b0 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t, h\u1ec7 s\u1ed1 d\u1eabn nhi\u1ec7t, m\u00f4 \u0111un Young)…<\/span><\/span><\/p>\n

Trong th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9, c\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u qu\u1ea3 th\u1eed nghi\u1ec7m l\u00e0: ph\u1ea1m vi thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9, t\u1ed1c \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m, th\u1eddi gian ti\u1ebfp x\u00fac c\u1ee7a m\u1eabu th\u1eed nghi\u1ec7m \u1edf nhi\u1ec7t \u0111\u1ed9 cao ho\u1eb7c th\u1ea5p, th\u1eddi gian chuy\u1ec3n \u0111\u1ed5i v\u00e0 s\u1ed1 chu k\u1ef3 th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c \u0111\u01b0a ra trong MIL-STD-883G 1010.8 v\u00e0 JESD22-A104-B, nh\u01b0ng c\u00f3 m\u1ed9t s\u1ed1 kh\u00e1c bi\u1ec7t nh\u1ea5t \u0111\u1ecbnh<\/span><\/span><\/p>\n

(1) Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9<\/span><\/span><\/span><\/h2>\n

Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec1 c\u1eadp \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean T v\u00e0 nhi\u1ec7t \u0111\u1ed9 gi\u1edbi h\u1ea1n d\u01b0\u1edbi T. V\u1ec1 nguy\u00ean t\u1eafc, gi\u00e1 tr\u1ecb c\u00e0ng l\u1edbn th\u00ec c\u00e0ng t\u1ed1t, v\u00ec nhi\u1ec7t \u0111\u1ed9 c\u00e0ng cao th\u00ec s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa \u1ee9ng su\u1ea5t nhi\u1ec7t v\u00e0 m\u1ecfi nhi\u1ec7t \u0111\u01b0\u1ee3c th\u00eam v\u00e0o m\u1eabu v\u1eadt c\u00f9ng m\u1ed9t l\u00fac c\u00e0ng l\u1edbn v\u00e0 hi\u1ec7u qu\u1ea3 lo\u1ea1i b\u1ecf h\u1ecfng h\u00f3c s\u1edbm c\u0169ng cao h\u01a1n, nh\u01b0ng \u0111\u1ed1i v\u1edbi m\u1ed9t s\u1ed1 v\u1eadt li\u1ec7u, khi nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea1t \u0111\u1ebfn m\u1ed9t gi\u00e1 tr\u1ecb nh\u1ea5t \u0111\u1ecbnh, n\u00f3 c\u00f3 th\u1ec3 g\u00e2y ra c\u01a1 ch\u1ebf h\u1ecfng h\u00f3c th\u01b0\u1eddng kh\u00f4ng th\u1ea5y trong qu\u00e1 tr\u00ecnh thi\u1ebft k\u1ebf v\u00e0 do h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t kh\u00e1c nhau, khi th\u1eed nghi\u1ec7m trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau, r\u1ea5t d\u1ec5 khi\u1ebfn s\u1ea3n ph\u1ea9m h\u1ecfng h\u00f3c s\u1edbm.<\/span><\/span><\/p>\n

Ngo\u00e0i ra, qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m gia nhi\u1ec7t v\u00e0 l\u00e0m m\u00e1t d\u1ec5 t\u1ea1o ra hi\u1ec7n t\u01b0\u1ee3ng ng\u01b0ng t\u1ee5 ho\u1eb7c \u0111\u00f3ng b\u0103ng trong c\u00e1c th\u00e0nh ph\u1ea7n ho\u1eb7c thi\u1ebft b\u1ecb, \u0111i\u1ec1u n\u00e0y s\u1ebd g\u00e2y th\u00eam \u1ee9ng su\u1ea5t cho m\u1eabu, do \u0111\u00f3, vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ph\u1ee5 thu\u1ed9c v\u00e0o t\u00ecnh h\u00ecnh c\u1ee5 th\u1ec3 c\u1ee7a s\u1ea3n ph\u1ea9m, nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 cao ho\u1eb7c qu\u00e1 th\u1ea5p, kh\u00f4ng \u0111\u01b0\u1ee3c g\u00e2y h\u1ea1i cho s\u1ea3n ph\u1ea9m b\u00ecnh th\u01b0\u1eddng theo ti\u1ec1n \u0111\u1ec1 l\u1ef1a ch\u1ecdn ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a, th\u01b0\u1eddng l\u00e0 t\u1eeb 55 \u00b0 C ~ +125 \u00b0 C.<\/span><\/span><\/p>\n

Do c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c nhau c\u1ee7a \u1ee9ng d\u1ee5ng ban \u0111\u1ea7u c\u1ee7a ti\u00eau chu\u1ea9n, ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng gi\u1ed1ng nhau MIL-STD-883G ban \u0111\u1ea7u ch\u1ee7 y\u1ebfu d\u00e0nh cho thi\u1ebft b\u1ecb qu\u00e2n s\u1ef1, v\u00ec v\u1eady c\u00e1c quy \u0111\u1ecbnh v\u1ec1 nhi\u1ec7t \u0111\u1ed9 nghi\u00eam ng\u1eb7t h\u01a1n v\u00e0 JESD22-A104-B l\u00e0 s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed to\u00e0n c\u1ea7u, t\u01b0\u01a1ng \u0111\u1ed1i m\u00e0 n\u00f3i, n\u00f3 tho\u1ea3i m\u00e1i h\u01a1n MIL-STD-883G, MIL-STD-883G3 Ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 cao g\u1ea7n g\u1ea5p \u0111\u00f4i JESD22-A104-B. Trong vi\u1ec7c l\u1ef1a ch\u1ecdn nhi\u1ec7t \u0111\u1ed9, n\u00ean xem x\u00e9t m\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng v\u00e0 vi\u1ec7c s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng, MIL-STD883G 1010.8 trong vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed d\u00e2n d\u1ee5ng khi nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf m\u1ee9c 55 \u00b0 C ~ +125 \u00b0 C. Vi\u1ec7c l\u1ef1a ch\u1ecdn nhi\u1ec7t \u0111\u1ed9 c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn s\u1ed1 chu k\u1ef3 th\u1eed nghi\u1ec7m v\u00e0 l\u1ef1a ch\u1ecdn m\u00f4 h\u00ecnh.<\/span><\/span><\/p>\n

(2) T\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9<\/span><\/span><\/span><\/h2>\n

T\u1ed1c \u0111\u1ed9 gia nhi\u1ec7t v\u00e0 t\u1ed1c \u0111\u1ed9 l\u00e0m m\u00e1t c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m li\u00ean quan \u0111\u1ebfn ch\u1ebf \u0111\u1ed9 l\u00e0m m\u00e1t trong h\u1ed9p, n\u1ebfu \u00e1p d\u1ee5ng tr\u1ef1c ti\u1ebfp ph\u01b0\u01a1ng ph\u00e1p l\u00e0m m\u00e1t l\u01b0u th\u00f4ng kh\u00f4ng kh\u00ed th\u00ec t\u1ed1c \u0111\u1ed9 gia nhi\u1ec7t b\u1ecb gi\u1edbi h\u1ea1n \u1edf m\u1ee9c 5 ~ 10 \u00b0C \/ ph\u00fat; n\u1ebfu d\u00f9ng nit\u01a1 l\u1ecfng \u0111\u1ec3 l\u00e0m m\u00e1t th\u00ec gi\u00e1 tr\u1ecb l\u00e0 chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 trong nh\u00e0 25 ~ 40 \u00b0C \/ ph\u00fat.<\/span><\/span><\/p>\n

Bu\u1ed3ng th\u1eed nghi\u1ec7m th\u01b0\u1eddng \u0111\u01b0\u1ee3c chia th\u00e0nh tu\u1ea7n ho\u00e0n kh\u00f4ng kh\u00ed v\u00e0 l\u00e0m m\u00e1t b\u1eb1ng nit\u01a1 l\u1ecfng. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p l\u00e0m m\u00e1t kh\u00e1c nhau c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m l\u00e0m cho c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c nhau khi ch\u1ec9 \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9.<\/span><\/span><\/p>\n

Nh\u00ecn chung, vi\u1ec7c t\u0103ng t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u00f3 l\u1ee3i cho vi\u1ec7c k\u00edch th\u00edch kh\u1ea3 n\u0103ng ph\u01a1i nhi\u1ec5m khuy\u1ebft t\u1eadt, t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u00e0ng cao, c\u01b0\u1eddng \u0111\u1ed9 th\u1eed nghi\u1ec7m c\u00e0ng m\u1ea1nh, c\u00e0ng d\u1ec5 k\u00edch th\u00edch khuy\u1ebft t\u1eadt c\u1ee7a m\u1eabu; Tuy nhi\u00ean, khi t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea1t \u0111\u1ebfn m\u1ed9t gi\u00e1 tr\u1ecb nh\u1ea5t \u0111\u1ecbnh, c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 v\u1ec1 c\u01a1 b\u1ea3n \u0111\u1ea1t \u0111\u1ebfn tr\u1ea1ng th\u00e1i b\u00e3o h\u00f2a, m\u1eabu th\u1eed kh\u00f4ng nh\u1ea1y c\u1ea3m l\u1eafm v\u1edbi s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 v\u00e0 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u1ee7a m\u1eabu ch\u1eadm h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

3. K\u1ebft lu\u1eadn<\/span><\/span><\/strong><\/span><\/h1>\n

D\u1ef1a tr\u00ean nh\u1eefng ph\u00e2n t\u00edch tr\u00ean, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng, nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t trong vi\u1ec7c x\u00e2y d\u1ef1ng c\u00e1c tham s\u1ed1 c\u1ee7a ti\u00eau chu\u1ea9n ch\u1ee7 y\u1ebfu th\u1ec3 hi\u1ec7n \u1edf c\u00e1c kh\u00eda c\u1ea1nh sau:<\/span><\/span><\/p>\n

C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u00e1p d\u1ee5ng kh\u00e1c nhau c\u1ee7a MIL-STD-883G ban \u0111\u1ea7u ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft b\u1ecb qu\u00e2n s\u1ef1 v\u00e0 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ch\u00fang nghi\u00eam ng\u1eb7t h\u01a1n, trong khi m\u1ed9t ti\u00eau chu\u1ea9n kh\u00e1c d\u00e0nh cho s\u1ea3n ph\u1ea9m d\u00e2n s\u1ef1 v\u00e0 nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m t\u01b0\u01a1ng \u0111\u1ed1i y\u1ebfu.<\/span><\/span><\/p>\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p l\u00e0m m\u00e1t kh\u00e1c nhau c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m d\u1eabn \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau v\u00e0 ph\u01b0\u01a1ng ph\u00e1p l\u00e0m m\u00e1t l\u01b0u th\u00f4ng kh\u00f4ng kh\u00ed l\u00e0m cho t\u1ed1c \u0111\u1ed9 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c.<\/span><\/span><\/p>\n

\u0110\u1ed1i v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m \u0111i\u1ec7n t\u1eed, th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 l\u00e0 m\u1ed9t trong nh\u1eefng th\u1eed nghi\u1ec7m hi\u1ec7u qu\u1ea3 nh\u1ea5t, kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u1ed9 tin c\u1eady c\u1ee7a c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n, \u0111\u1eb7c t\u00ednh c\u01a1 h\u1ecdc, v.v. c\u1ee7a s\u1ea3n ph\u1ea9m m\u00e0 c\u00f2n \u00e1p d\u1ee5ng m\u1ed9t \u1ee9ng su\u1ea5t nh\u1ea5t \u0111\u1ecbnh cho m\u1eabu trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, \u0111\u1ec3 c\u00e1c khuy\u1ebft t\u1eadt ti\u1ec1m \u1ea9n b\u00ean trong n\u00f3 \u0111\u01b0\u1ee3c ph\u01a1i b\u00e0y nhanh h\u01a1n. Khi ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9, c\u00e1c ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m th\u00edch h\u1ee3p n\u00ean \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn theo ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a c\u00e1c m\u1eabu th\u1eed nghi\u1ec7m, vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c m\u1eabu, \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh c\u1ee7a bu\u1ed3ng th\u1eed nghi\u1ec7m v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c, v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 n\u00ean \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh tr\u00ean c\u01a1 s\u1edf c\u00e1c ti\u00eau chu\u1ea9n, \u0111\u1ec3 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 \u1ee9ng su\u1ea5t m\u1ed9t c\u00e1ch th\u00edch h\u1ee3p v\u00e0 r\u00fat ng\u1eafn th\u1eddi gian th\u1eed nghi\u1ec7m, do \u0111\u00f3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 b\u1ec1n th\u1eed nghi\u1ec7m v\u00e0 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 tin c\u1eady cao c\u1ee7a s\u1ea3n ph\u1ea9m.<\/span><\/span><\/p>\n

\n
<\/div>\n
<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng c\u00f3 t\u00e1c \u0111\u1ed9ng l\u1edbn \u0111\u1ebfn \u0111\u1ed9 tin c\u1eady c\u1ee7a s\u1ea3n ph\u1ea9m v\u00e0 h\u1ea7u h\u1ebft c\u00e1c s\u1ea3n ph\u1ea9m b\u1ecb h\u1ecfng l\u00e0 do c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng1 Trong g\u1ea7n 20 y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng, \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 chi\u1ebfm kho\u1ea3ng 40% t\u1ed5ng t\u1ef7 l\u1ec7 c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng. Do<\/p>\n","protected":false},"author":1,"featured_media":19846,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19845","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-cong-nghe"],"acf":[],"_links":{"self":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19845","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/comments?post=19845"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19845\/revisions"}],"predecessor-version":[{"id":22086,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19845\/revisions\/22086"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19846"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19845"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19845"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19845"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}