{"id":9871,"date":"2026-02-24T15:11:46","date_gmt":"2026-02-24T07:11:46","guid":{"rendered":"https:\/\/www.packqc.com\/standard\/astm-d689-2\/"},"modified":"2026-04-16T09:53:21","modified_gmt":"2026-04-16T01:53:21","slug":"astm-d689","status":"publish","type":"standard","link":"https:\/\/www.packqc.com\/vi\/standard\/astm-d689\/","title":{"rendered":"Ti\u00eau chu\u1ea9n ASTMD689"},"content":{"rendered":"

Hi\u1ec3u v\u1ec1 ASTM D689<\/h2>\n\n\n\n

Ti\u00eau chu\u1ea9n ASTM D689 quy \u0111\u1ecbnh m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u00eau chu\u1ea9n \u0111\u1ec3 \u0111o l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e9 gi\u1ea5y theo h\u01b0\u1edbng vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng c\u1ee7a t\u1edd gi\u1ea5y sau khi \u0111\u00e3 t\u1ea1o ra v\u1ebft x\u00e9 ban \u0111\u1ea7u. Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00e0y s\u1eed d\u1ee5ng c\u01a1 ch\u1ebf \u0111\u1ed3ng h\u1ed3 l\u1eafc Elmendorf, chuy\u1ec3n \u0111\u1ed5i s\u1ef1 m\u1ea5t m\u00e1t n\u0103ng l\u01b0\u1ee3ng ti\u1ec1m n\u0103ng th\u00e0nh l\u1ef1c x\u00e9 c\u00f3 th\u1ec3 \u0111o \u0111\u01b0\u1ee3c.<\/p>\n\n\n\n

Kh\u00e1c v\u1edbi c\u00e1c th\u1eed nghi\u1ec7m k\u00e9o ho\u1eb7c v\u1ee1, ti\u00eau chu\u1ea9n ASTM D689 t\u1eadp trung v\u00e0o kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch b\u00ean trong. T\u00ednh ch\u1ea5t n\u00e0y ph\u1ea3n \u00e1nh c\u00e1ch gi\u1ea5y ph\u1ea3n \u1ee9ng khi ch\u1ecbu l\u1ef1c \u0111\u1ed9t ng\u1ed9t trong qu\u00e1 tr\u00ecnh gia c\u00f4ng, g\u1ea5p, c\u1eaft ho\u1eb7c x\u1eed l\u00fd. V\u00ec l\u00fd do n\u00e0y, ASTM D689 th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n kh\u00e1c \u0111\u1ec3 cung c\u1ea5p m\u1ed9t h\u1ed3 s\u01a1 hi\u1ec7u su\u1ea5t to\u00e0n di\u1ec7n h\u01a1n.<\/p>\n\n\n\n

Ti\u00eau chu\u1ea9n n\u00e0y \u00e1p d\u1ee5ng cho nhi\u1ec1u lo\u1ea1i gi\u1ea5y v\u00e0 b\u00eca gi\u1ea5y, tuy nhi\u00ean n\u00f3 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i gi\u1ea5y c\u00f3 h\u01b0\u1edbng cao khi c\u1ea7n \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng r\u00e1ch theo h\u01b0\u1edbng ngang.<\/p>\n\n\n\n

ASTM D689: Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n r\u00e1ch c\u1ee7a gi\u1ea5y b\u1eb1ng m\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n r\u00e1ch Elmendorf<\/h2>\n\n\n\n

C\u00e1c Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n r\u00e1ch c\u1ee7a gi\u1ea5y<\/strong> \u0110\u01b0\u1ee3c m\u00f4 t\u1ea3 trong ASTM D689 s\u1eed d\u1ee5ng m\u1ed9t M\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf<\/strong> \u0110\u1ec3 x\u00e9 m\u1ed9t ho\u1eb7c nhi\u1ec1u l\u1edbp gi\u1ea5y qua m\u1ed9t kho\u1ea3ng c\u00e1ch c\u1ed1 \u0111\u1ecbnh. Thi\u1ebft b\u1ecb \u0111o l\u01b0\u1eddng c\u00f4ng vi\u1ec7c do qu\u1ea3 l\u1eafc th\u1ef1c hi\u1ec7n trong qu\u00e1 tr\u00ecnh x\u00e9 v\u00e0 hi\u1ec3n th\u1ecb l\u1ef1c x\u00e9 trung b\u00ecnh.<\/p>\n\n\n\n

Khi th\u1eed nghi\u1ec7m nhi\u1ec1u t\u1edd gi\u1ea5y c\u00f9ng l\u00fac, k\u1ebft qu\u1ea3 \u0111\u1ea1i di\u1ec7n cho gi\u00e1 tr\u1ecb trung b\u00ecnh. Gi\u00e1 tr\u1ecb n\u00e0y cho ph\u00e9p c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m t\u00ednh to\u00e1n \u0111\u1ed9 b\u1ec1n r\u00e1ch x\u1ea5p x\u1ec9 c\u1ee7a m\u1ed9t t\u1edd gi\u1ea5y \u0111\u01a1n l\u1ebb. \u0110\u1ed1i v\u1edbi c\u00e1c lo\u1ea1i gi\u1ea5y m\u1ecfng m\u00e0 vi\u1ec7c th\u1eed nghi\u1ec7m t\u1eebng t\u1edd ri\u00eang l\u1ebb l\u00e0 kh\u1ea3 thi, \u0111\u1ed9 b\u1ec1n r\u00e1ch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111o tr\u1ef1c ti\u1ebfp.<\/p>\n\n\n\n

C\u00e1c \u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a gi\u1ea5y<\/strong> \u0110\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua ti\u00eau chu\u1ea9n ASTM D689, th\u00f4ng s\u1ed1 n\u00e0y \u0111\u00f3ng vai tr\u00f2 l\u00e0 ch\u1ec9 s\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 b\u00e1m d\u00ednh c\u1ee7a s\u1ee3i, chi\u1ec1u d\u00e0i s\u1ee3i, \u0111i\u1ec1u ki\u1ec7n tinh ch\u1ebf v\u00e0 t\u00ednh to\u00e0n v\u1eb9n t\u1ed5ng th\u1ec3 c\u1ee7a t\u1ea5m.<\/p>\n\n\n\n

Nguy\u00ean l\u00fd th\u1eed nghi\u1ec7m d\u1ef1a tr\u00ean ph\u01b0\u01a1ng ph\u00e1p Elmendorf<\/h2>\n\n\n\n

Ph\u01b0\u01a1ng ph\u00e1p Elmendorf ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean m\u1ed9t nguy\u00ean l\u00fd c\u01a1 h\u1ecdc \u0111\u01a1n gi\u1ea3n nh\u01b0ng \u0111\u00e1ng tin c\u1eady. M\u1ed9t qu\u1ea3 l\u1eafc c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 h\u00ecnh d\u1ea1ng \u0111\u00e3 bi\u1ebft \u0111\u01b0\u1ee3c th\u1ea3 t\u1eeb m\u1ed9t \u0111\u1ed9 cao c\u1ed1 \u0111\u1ecbnh. Khi qu\u1ea3 l\u1eafc dao \u0111\u1ed9ng, n\u00f3 l\u00e0m r\u00e1ch m\u1eabu th\u1eed \u0111\u01b0\u1ee3c k\u1eb9p ch\u1eb7t trong m\u00e1y th\u1eed. N\u0103ng l\u01b0\u1ee3ng ti\u00eau th\u1ee5 trong qu\u00e1 tr\u00ecnh r\u00e1ch l\u00e0m gi\u1ea3m \u0111\u1ed9 cao cu\u1ed1i c\u00f9ng c\u1ee7a qu\u1ea3 l\u1eafc.<\/p>\n\n\n\n

Thang \u0111o c\u1ee7a thi\u1ebft b\u1ecb chuy\u1ec3n \u0111\u1ed5i t\u1ed5n th\u1ea5t n\u0103ng l\u01b0\u1ee3ng th\u00e0nh l\u1ef1c x\u00e9. V\u00ec kho\u1ea3ng c\u00e1ch x\u00e9 gi\u1eef nguy\u00ean, ti\u00eau chu\u1ea9n ASTM D689 \u0111\u1ea3m b\u1ea3o r\u1eb1ng k\u1ebft qu\u1ea3 v\u1eabn c\u00f3 th\u1ec3 so s\u00e1nh \u0111\u01b0\u1ee3c gi\u1eefa c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m khi quy tr\u00ecnh v\u00e0 thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c duy tr\u00ec nh\u1ea5t qu\u00e1n.<\/p>\n\n\n\n

Nguy\u00ean t\u1eafc n\u00e0y khi\u1ebfn ph\u01b0\u01a1ng ph\u00e1p Elmendorf tr\u1edf n\u00ean nhanh ch\u00f3ng, c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i v\u00e0 ph\u00f9 h\u1ee3p cho c\u00e1c th\u1eed nghi\u1ec7m ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ecbnh k\u1ef3 t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y gi\u1ea5y v\u00e0 ph\u00f2ng th\u00ed nghi\u1ec7m.<\/p>\n\n\n\n

T\u1ed5ng quan v\u1ec1 quy tr\u00ecnh th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n ASTM D689<\/h2>\n\n\n\n

\u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i, c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m n\u00ean tu\u00e2n th\u1ee7 m\u1ed9t quy tr\u00ecnh c\u00f3 c\u1ea5u tr\u00fac ph\u00f9 h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n ASTM D689:<\/p>\n\n\n\n

Chu\u1ea9n b\u1ecb m\u1eabu<\/strong>
Chu\u1ea9n b\u1ecb m\u1eabu gi\u1ea5y theo k\u00edch th\u01b0\u1edbc v\u00e0 h\u01b0\u1edbng y\u00eau c\u1ea7u. C\u00e1c th\u1eed nghi\u1ec7m th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n c\u1ea3 theo h\u01b0\u1edbng m\u00e1y v\u00e0 h\u01b0\u1edbng ngang.<\/p>\n\n\n\n

L\u1ef1a ch\u1ecdn l\u1edbp<\/strong>
Ch\u1ecdn s\u1ed1 l\u1edbp ph\u00f9 h\u1ee3p sao cho k\u1ebft qu\u1ea3 \u0111o n\u1eb1m trong ph\u1ea1m vi hi\u1ec7u chu\u1ea9n c\u1ee7a m\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf.<\/p>\n\n\n\n

C\u00e0i \u0111\u1eb7t thi\u1ebft b\u1ecb<\/strong>
Ki\u1ec3m tra \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a calibrate, \u0111\u1ea3m b\u1ea3o qu\u1ea3 l\u1eafc di chuy\u1ec3n t\u1ef1 do v\u00e0 x\u00e1c nh\u1eadn r\u1eb1ng kh\u00f4ng c\u00f3 ma s\u00e1t ho\u1eb7c v\u1eadt c\u1ea3n n\u00e0o \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn chuy\u1ec3n \u0111\u1ed9ng.<\/p>\n\n\n\n

Kh\u1edfi \u0111\u1ea7u qu\u00e1 tr\u00ecnh r\u00e1ch v\u00e0 ki\u1ec3m tra<\/strong>
G\u1eafp m\u1eabu v\u1eadt ch\u1eafc ch\u1eafn v\u00e0 th\u1ea3 qu\u1ea3 l\u1eafc \u0111\u1ec3 x\u00e9 gi\u1ea5y qua kho\u1ea3ng c\u00e1ch \u0111\u00e3 quy \u0111\u1ecbnh.<\/p>\n\n\n\n

Ghi ch\u00e9p k\u1ebft qu\u1ea3<\/strong>
Ghi l\u1ea1i c\u00e1c gi\u00e1 tr\u1ecb \u0111o l\u01b0\u1eddng ri\u00eang l\u1ebb v\u00e0 t\u00ednh to\u00e1n gi\u00e1 tr\u1ecb trung b\u00ecnh, gi\u00e1 tr\u1ecb t\u1ed1i \u0111a v\u00e0 gi\u00e1 tr\u1ecb t\u1ed1i thi\u1ec3u cho m\u1ed7i h\u01b0\u1edbng th\u1eed nghi\u1ec7m.<\/p>\n\n\n\n

Ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn s\u1ed1 l\u1edbp v\u00e0 s\u1ef1 s\u1eafp x\u1ebfp c\u1ee7a m\u1eabu th\u1eed \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c gi\u1ea3m thi\u1ec3u s\u1ef1 bi\u1ebfn \u0111\u1ed9ng.<\/p>\n\n\n\n

\u1ee8ng d\u1ee5ng c\u1ee7a ti\u00eau chu\u1ea9n ASTM D689 trong ng\u00e0nh c\u00f4ng nghi\u1ec7p gi\u1ea5y<\/h2>\n\n\n\n

Ti\u00eau chu\u1ea9n ASTM D689 v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i nh\u01b0 m\u1ed9t ch\u1ec9 s\u1ed1 d\u1ef1 \u0111o\u00e1n hi\u1ec7u su\u1ea5t s\u1eed d\u1ee5ng cu\u1ed1i c\u00f9ng cho nhi\u1ec1u lo\u1ea1i gi\u1ea5y kh\u00e1c nhau. Gi\u1ea5y \u0111\u00f3ng g\u00f3i c\u1ea7n c\u00f3 \u0111\u1ed9 b\u1ec1n r\u00e1ch \u0111\u1ee7 \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng trong qu\u00e1 tr\u00ecnh \u0111\u00f3ng g\u00f3i v\u00e0 v\u1eadn chuy\u1ec3n. Gi\u1ea5y in h\u01b0\u1edfng l\u1ee3i t\u1eeb \u0111\u1ed9 b\u1ec1n r\u00e1ch c\u00e2n \u0111\u1ed1i \u0111\u1ec3 tr\u00e1nh h\u01b0 h\u1ecfng m\u00e9p trong qu\u00e1 tr\u00ecnh x\u1eed l\u00fd t\u1ed1c \u0111\u1ed9 cao.<\/p>\n\n\n\n

B\u1eb1ng c\u00e1ch theo d\u00f5i \u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a gi\u1ea5y<\/strong>C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh nguy\u00ean li\u1ec7u th\u00f4, m\u1ee9c \u0111\u1ed9 tinh ch\u1ebf v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 quy tr\u00ecnh \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ch\u1ea5t l\u01b0\u1ee3ng \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n

K\u1ebft qu\u1ea3 \u0111\u00e1ng tin c\u1eady ph\u1ee5 thu\u1ed9c v\u00e0o thi\u1ebft b\u1ecb \u1ed5n \u0111\u1ecbnh v\u00e0 ch\u00ednh x\u00e1c. M\u1ed9t thi\u1ebft b\u1ecb hi\u1ec7n \u0111\u1ea1i M\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf<\/strong>, ch\u1eb3ng h\u1ea1n nh\u01b0 M\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n r\u00e1ch Cell Instruments SLD-01<\/a><\/b>, cung c\u1ea5p \u0111o l\u01b0\u1eddng n\u0103ng l\u01b0\u1ee3ng ch\u00ednh x\u00e1c, chuy\u1ec3n \u0111\u1ed9ng m\u01b0\u1ee3t m\u00e0 c\u1ee7a qu\u1ea3 l\u1eafc v\u00e0 hi\u1ec3n th\u1ecb s\u1ed1 ho\u1eb7c analog r\u00f5 r\u00e0ng. C\u00e1c t\u00ednh n\u0103ng n\u00e0y gi\u00fap c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u00e1p \u1ee9ng y\u00eau c\u1ea7u c\u1ee7a ti\u00eau chu\u1ea9n ASTM D689 \u0111\u1ed3ng th\u1eddi n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 \u0111\u1ed9 l\u1eb7p l\u1ea1i.<\/p>\n\n\n\n

C\u00f4ng ty TNHH Cell Instruments <\/b><\/a>H\u1ed7 tr\u1ee3 c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m tra gi\u1ea5y b\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb ki\u1ec3m tra \u0111\u1ed9 r\u00e1ch chuy\u00ean nghi\u1ec7p v\u00e0 chuy\u00ean m\u00f4n k\u1ef9 thu\u1eadt, \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf v\u00e0 \u0111\u1ed9 tin c\u1eady l\u00e2u d\u00e0i trong qu\u00e1 tr\u00ecnh ki\u1ec3m tra.<\/p>\n\n\n\n

Ph\u1ea7n k\u1ebft lu\u1eadn <\/h2>\n\n\n\n

Ti\u00eau chu\u1ea9n ASTMD689 <\/b>cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh v\u00e0 thi\u1ebft th\u1ef1c \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 b\u1ec1n x\u00e9 c\u1ee7a gi\u1ea5y theo ph\u01b0\u01a1ng ph\u00e1p Elmendorf. B\u1eb1ng c\u00e1ch n\u1eafm v\u1eefng nguy\u00ean l\u00fd th\u1eed nghi\u1ec7m, tu\u00e2n th\u1ee7 \u0111\u00fang quy tr\u00ecnh v\u00e0 l\u1ef1a ch\u1ecdn thi\u1ebft b\u1ecb ph\u00f9 h\u1ee3p, c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c d\u1eef li\u1ec7u \u0111\u00e1ng tin c\u1eady, h\u1ed7 tr\u1ee3 c\u00f4ng t\u00e1c ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 ph\u00e1t tri\u1ec3n s\u1ea3n ph\u1ea9m. \u0110\u1ed1i v\u1edbi c\u1ea3 nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 ng\u01b0\u1eddi s\u1eed d\u1ee5ng gi\u1ea5y, ti\u00eau chu\u1ea9n ASTM D689 v\u1eabn l\u00e0 ti\u00eau chu\u1ea9n thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

\u0110\u1ec3 c\u00f3 c\u00e1c gi\u1ea3i ph\u00e1p ki\u1ec3m tra \u0111\u00e1ng tin c\u1eady \u0111\u00e1p \u1ee9ng ti\u00eau chu\u1ea9n ASTM v\u00e0 ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf, D\u1ee5ng c\u1ee5 t\u1ebf b\u00e0o<\/strong> Cung c\u1ea5p c\u00e1c h\u1ec7 th\u1ed1ng chuy\u00ean nghi\u1ec7p v\u00e0 h\u1ed7 tr\u1ee3 k\u1ef9 thu\u1eadt chuy\u00ean s\u00e2u \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang theo nhu c\u1ea7u ki\u1ec3m th\u1eed c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n

ASTM D689 l\u00e0 g\u00ec v\u00e0 t\u1ea1i sao n\u00f3 l\u1ea1i quan tr\u1ecdng?
Ti\u00eau chu\u1ea9n ASTMD689<\/strong> l\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o l\u01b0\u1eddng \u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a gi\u1ea5y<\/strong> s\u1eed d\u1ee5ng m\u1ed9t M\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf<\/strong>N\u00f3 cung c\u1ea5p d\u1eef li\u1ec7u quan tr\u1ecdng cho ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 d\u1ef1 \u0111o\u00e1n hi\u1ec7u su\u1ea5t c\u1ee7a gi\u1ea5y trong c\u00e1c \u1ee9ng d\u1ee5ng cu\u1ed1i c\u00f9ng.<\/p>\n\n\n\n

C\u00e1c v\u1eadt li\u1ec7u n\u00e0o c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m tra b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ASTM D689?
B\u00e0i ki\u1ec3m tra n\u00e0y \u00e1p d\u1ee5ng cho h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i gi\u1ea5y, bao g\u1ed3m gi\u1ea5y v\u0103n ph\u00f2ng, gi\u1ea5y \u0111\u00f3ng g\u00f3i v\u00e0 gi\u1ea5y chuy\u00ean d\u1ee5ng. N\u00f3 \u0111o l\u01b0\u1eddng c\u1ea3 h\u01b0\u1edbng m\u00e1y v\u00e0 h\u01b0\u1edbng ngang. \u0110\u1ed9 b\u1ec1n r\u00e1ch c\u1ee7a gi\u1ea5y<\/strong> \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u.<\/p>\n\n\n\n

C\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf trong th\u1eed nghi\u1ec7m n\u00e0y l\u00e0 g\u00ec?
C\u00e1c M\u00e1y th\u1eed \u0111\u1ed9 r\u00e1ch Elmendorf<\/strong> S\u1eed d\u1ee5ng m\u1ed9t qu\u1ea3 l\u1eafc \u0111\u1ec3 x\u00e9 m\u1eabu gi\u1ea5y. N\u0103ng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c gi\u1ea5y h\u1ea5p th\u1ee5 khi b\u1ecb x\u00e9 \u0111\u01b0\u1ee3c ghi l\u1ea1i, sau \u0111\u00f3 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh m\u1ed9t \u0110\u1ed9 b\u1ec1n k\u00e9o c\u1ee7a gi\u1ea5y<\/strong> Gi\u00e1 tr\u1ecb cho m\u1ed9t l\u1edbp ho\u1eb7c nhi\u1ec1u l\u1edbp.<\/p>\n\n\n\n

C\u00e1c b\u01b0\u1edbc ch\u00ednh trong vi\u1ec7c th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n r\u00e1ch gi\u1ea5y theo ti\u00eau chu\u1ea9n ASTM D689 l\u00e0 g\u00ec?
Quy tr\u00ecnh bao g\u1ed3m chu\u1ea9n b\u1ecb m\u1eabu, k\u1eb9p gi\u1ea5y v\u00e0o trong M\u00e1y th\u1eed Elmendorf<\/strong>, kh\u1edfi \u0111\u1ed9ng qu\u00e1 tr\u00ecnh r\u00e1ch, ghi l\u1ea1i l\u1ef1c r\u00e1ch v\u00e0 t\u00ednh to\u00e1n gi\u00e1 tr\u1ecb trung b\u00ecnh. \u0110\u1ed9 b\u1ec1n k\u00e9o<\/strong>C\u00e1c th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n c\u1ea3 theo h\u01b0\u1edbng d\u1ecdc v\u00e0 ngang c\u1ee7a m\u00e1y \u0111\u1ec3 c\u00f3 k\u1ebft qu\u1ea3 to\u00e0n di\u1ec7n.<\/p>","protected":false},"excerpt":{"rendered":"

Understanding ASTM D689 ASTM D689 defines a standardized method to measure the force required to tear paper in a direction perpendicular to the sheet plane after a tear has been initiated. The test relies on an Elmendorf pendulum mechanism, which converts potential energy loss into a measurable tearing force. Unlike tensile or burst tests, ASTM […]<\/p>","protected":false},"featured_media":8703,"parent":0,"template":"","meta":{"_acf_changed":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"standard-category":[611],"class_list":["post-9871","standard","type-standard","status-publish","has-post-thumbnail","hentry","standard-category-astm"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/standard\/9871","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/standard"}],"about":[{"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/types\/standard"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/media\/8703"}],"wp:attachment":[{"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/media?parent=9871"}],"wp:term":[{"taxonomy":"standard-category","embeddable":true,"href":"https:\/\/www.packqc.com\/vi\/wp-json\/wp\/v2\/standard-category?post=9871"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}