{"id":939,"date":"2026-03-06T06:04:23","date_gmt":"2026-03-06T06:04:23","guid":{"rendered":"https:\/\/www.teartester.com\/?p=939"},"modified":"2026-03-06T06:04:25","modified_gmt":"2026-03-06T06:04:25","slug":"tear-strength-testing","status":"publish","type":"post","link":"https:\/\/www.teartester.com\/vi\/tear-strength-testing\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n v\u1ec1 th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n r\u00e1ch: Ti\u00eau chu\u1ea9n ASTM D1004 v\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m r\u00e1ch Graves"},"content":{"rendered":"

Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o<\/strong> l\u00e0 m\u1ed9t quy tr\u00ecnh thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 b\u1ec1n v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 bao b\u00ec, d\u1ec7t may v\u00e0 nh\u1ef1a. Th\u1eed nghi\u1ec7m n\u00e0y \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch c\u1ee7a v\u1eadt li\u1ec7u, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00e0ng nh\u1ef1a ho\u1eb7c t\u1ea5m nh\u1ef1a, khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c. N\u00f3 cung c\u1ea5p d\u1eef li\u1ec7u qu\u00fd gi\u00e1 cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ed9i ng\u0169 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng nh\u1eb1m \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n

Trong b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u v\u1ec1 t\u1ea7m quan tr\u1ecdng c\u1ee7a Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o<\/strong>, t\u1eadp trung v\u00e0o X\u00e9t nghi\u1ec7m n\u01b0\u1edbc m\u1eaft Graves<\/strong> v\u00e0 ASTM D1004<\/a><\/strong>, m\u1ed9t ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn r\u1ed9ng r\u00e3i \u0111\u1ec3 \u0111o \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch c\u1ee7a v\u1eadt li\u1ec7u. Ch\u00fang ta c\u0169ng s\u1ebd th\u1ea3o lu\u1eadn v\u1ec1 c\u00e1ch m\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch<\/strong> \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c \u0111\u00e1nh gi\u00e1 hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh.<\/p>\n\n\n\n

\"Th\u1eed<\/figure>\n\n\n\n

ASTM D1004: Ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n x\u00e9<\/h2>\n\n\n\n

ASTM D1004<\/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 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n r\u00e1ch c\u1ee7a m\u00e0ng v\u00e0 t\u1ea5m nh\u1ef1a d\u1ebbo. Th\u1eed nghi\u1ec7m n\u00e0y \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p m\u00e0 v\u1eadt li\u1ec7u \u0111\u00f3ng g\u00f3i ph\u1ea3i ch\u1ecbu nhi\u1ec1u t\u00e1c \u0111\u1ed9ng c\u01a1 h\u1ecdc kh\u00e1c nhau trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111o l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 g\u00e2y ra v\u1ebft r\u00e1ch tr\u00ean v\u1eadt li\u1ec7u \u1edf t\u1ed1c \u0111\u1ed9 t\u1ea3i th\u1ea5p (kho\u1ea3ng 51 mm m\u1ed7i ph\u00fat).<\/p>\n\n\n\n

C\u00e1c n\u1ed9i dung ch\u00ednh c\u1ee7a ti\u00eau chu\u1ea9n ASTM D1004:<\/h2>\n\n\n\n
    \n
  • H\u00ecnh h\u1ecdc m\u1eabu:<\/strong> Th\u1eed nghi\u1ec7m n\u00e0y \u0111o l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra v\u1ebft r\u00e1ch tr\u00ean m\u1ed9t c\u1ea5u tr\u00fac h\u00ecnh h\u1ecdc c\u1ee5 th\u1ec3, t\u1eeb \u0111\u00f3 t\u1ea1o ra m\u1ed9t v\u00f9ng \u1ee9ng su\u1ea5t t\u1eadp trung.<\/li>\n\n\n\n
  • \u0110o l\u1ef1c:<\/strong> L\u1ef1c g\u00e2y ra v\u1ebft r\u00e1ch \u0111\u01b0\u1ee3c ghi l\u1ea1i trong niuton<\/strong> ho\u1eb7c l\u1ef1c pound<\/strong>, cung c\u1ea5p nh\u1eefng th\u00f4ng tin qu\u00fd gi\u00e1 v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch c\u1ee7a v\u1eadt li\u1ec7u.<\/li>\n\n\n\n
  • Ph\u00f9 h\u1ee3p v\u1edbi m\u00e0ng d\u1ebbo:<\/strong> Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m n\u00e0y \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i m\u00e0ng v\u00e0 t\u1ea5m nh\u1ef1a d\u1ebbo kh\u00f4ng b\u1ecb g\u00e3y gi\u00f2n trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m v\u00e0 kh\u00f4ng b\u1ecb k\u00e9o d\u00e0i qu\u00e1 200% trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m.<\/li>\n<\/ul>\n\n\n\n

    Ti\u00eau chu\u1ea9n ASTM D1004 cung c\u1ea5p m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p \u0111\u00e1ng tin c\u1eady v\u00e0 \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a \u0111\u1ec3 so s\u00e1nh \u0111\u1ed9 b\u1ec1n x\u00e9 c\u1ee7a c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u c\u00f3 th\u00e0nh ph\u1ea7n t\u01b0\u01a1ng t\u1ef1. Tuy nhi\u00ean, c\u1ea7n l\u01b0u \u00fd r\u1eb1ng kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch<\/strong> kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 d\u00e0y c\u1ee7a m\u1eabu th\u1eed; c\u00e1c t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u kh\u00e1c, nh\u01b0 \u0111\u1ed9 \u0111\u00e0n h\u1ed3i v\u00e0 \u0111\u1ed9 b\u1ec1n k\u00e9o, c\u0169ng \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng.<\/p>\n\n\n\n

    Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n n\u01b0\u1edbc m\u1eaft Graves: M\u1ed9t ph\u01b0\u01a1ng ph\u00e1p quan tr\u1ecdng \u0111\u1ec3 \u0111o \u0111\u1ed9 b\u1ec1n n\u01b0\u1edbc m\u1eaft<\/h2>\n\n\n\n

    C\u00e1i X\u00e9t nghi\u1ec7m n\u01b0\u1edbc m\u1eaft Graves<\/strong> l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 b\u1ec1n r\u00e1ch, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi m\u00e0ng v\u00e0 t\u1ea5m nh\u1ef1a. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 m\u1ed1i li\u00ean h\u1ec7 ch\u1eb7t ch\u1ebd v\u1edbi ti\u00eau chu\u1ea9n ASTM D1004 nh\u01b0ng kh\u00e1c bi\u1ec7t v\u1ec1 quy tr\u00ecnh th\u1eed nghi\u1ec7m v\u00e0 h\u00ecnh d\u1ea1ng m\u1eabu th\u1eed. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y X\u00e9t nghi\u1ec7m n\u01b0\u1edbc m\u1eaft Graves<\/strong> \u0111o l\u01b0\u1eddng l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra v\u00e0 lan r\u1ed9ng v\u1ebft r\u00e1ch tr\u00ean v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 cung c\u1ea5p th\u00f4ng tin chi ti\u1ebft v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch c\u1ee7a v\u1eadt li\u1ec7u \u0111\u00f3.<\/p>\n\n\n\n

    Th\u1eed nghi\u1ec7m n\u00e0y c\u00f3 gi\u00e1 tr\u1ecb r\u1ea5t cao \u0111\u1ed1i v\u1edbi c\u00e1c ng\u00e0nh s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u \u0111\u00f3ng g\u00f3i, n\u01a1i kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch l\u00e0 y\u1ebfu t\u1ed1 thi\u1ebft y\u1ebfu \u0111\u1ec3 b\u1ea3o v\u1ec7 s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u1ea3m b\u1ea3o t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac. X\u00e9t nghi\u1ec7m n\u01b0\u1edbc m\u1eaft Graves<\/strong> \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i cho c\u00e1c v\u1eadt li\u1ec7u nh\u01b0:<\/p>\n\n\n\n

      \n
    • M\u00e0ng nh\u1ef1a<\/li>\n\n\n\n
    • Gi\u1ea5y v\u00e0 b\u00eca c\u1ee9ng<\/li>\n\n\n\n
    • V\u1ea3i v\u00f3c<\/li>\n<\/ul>\n\n\n\n

      Trong X\u00e9t nghi\u1ec7m n\u01b0\u1edbc m\u1eaft Graves<\/strong>, m\u1ed9t v\u1ebft kh\u00eda \u0111\u01b0\u1ee3c t\u1ea1o ra tr\u00ean m\u1eabu th\u1eed, v\u00e0 m\u00e1y th\u1eed nghi\u1ec7m \u0111o l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 v\u1ebft r\u00e1ch lan r\u1ed9ng. D\u1eef li\u1ec7u v\u1ec1 kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n c\u1ee7a v\u1eadt li\u1ec7u trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

      Vai tr\u00f2 c\u1ee7a m\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch trong ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/h2>\n\n\n\n

      M\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch<\/strong> l\u00e0 nh\u1eefng c\u00f4ng c\u1ee5 quan tr\u1ecdng trong c\u00e1c ph\u00f2ng th\u00ed nghi\u1ec7m ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ec3 th\u1eed nghi\u1ec7m v\u00e0 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 b\u1ec1n r\u00e1ch c\u1ee7a v\u1eadt li\u1ec7u. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u00e1c d\u1ee5ng m\u1ed9t l\u1ef1c c\u00f3 ki\u1ec3m so\u00e1t l\u00ean m\u1eabu v\u1eadt li\u1ec7u, cho ph\u00e9p \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c l\u1ef1c c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra ho\u1eb7c l\u00e0m lan r\u1ed9ng v\u1ebft r\u00e1ch.<\/p>\n\n\n\n

      C\u00e1c t\u00ednh n\u0103ng ch\u00ednh c\u1ee7a m\u1ed9t m\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch<\/strong> bao g\u1ed3m:<\/p>\n\n\n\n

        \n
      • \u0110o l\u1ef1c ch\u00ednh x\u00e1c:<\/strong> M\u00e1y th\u1eed \u0111o l\u1ef1c t\u1ed1i \u0111a c\u1ea7n thi\u1ebft \u0111\u1ec3 l\u00e0m r\u00e1ch m\u1eabu th\u1eed, v\u00e0 k\u1ebft qu\u1ea3 \u0111\u01b0\u1ee3c ghi l\u1ea1i b\u1eb1ng \u0111\u01a1n v\u1ecb newton ho\u1eb7c pound-l\u1ef1c.<\/li>\n\n\n\n
      • T\u00ednh nh\u1ea5t qu\u00e1n trong qu\u00e1 tr\u00ecnh ki\u1ec3m th\u1eed:<\/strong> C\u00e1c thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m n\u00e0y \u0111\u1ea3m b\u1ea3o k\u1ebft qu\u1ea3 \u1ed5n \u0111\u1ecbnh, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 so s\u00e1nh c\u00e1c l\u00f4 v\u1eadt li\u1ec7u kh\u00e1c nhau ho\u1eb7c \u0111\u00e1nh gi\u00e1 t\u00ednh ch\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u theo th\u1eddi gian.<\/li>\n\n\n\n
      • Ph\u00e2n t\u00edch d\u1eef li\u1ec7u:<\/strong> N\u00e2ng cao m\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch<\/strong> cung c\u1ea5p ph\u00e2n t\u00edch d\u1eef li\u1ec7u chi ti\u1ebft, bao g\u1ed3m l\u1ef1c r\u00e1ch t\u1ed1i \u0111a, \u0111\u1ed9 gi\u00e3n khi r\u00e1ch v\u00e0 \u0111\u1ed9 b\u1ec1n r\u00e1ch tr\u00ean \u0111\u01a1n v\u1ecb \u0111\u1ed9 d\u00e0y, gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t t\u1ed1i \u01b0u h\u00f3a t\u00ednh ch\u1ea5t v\u1eadt li\u1ec7u v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/li>\n<\/ul>\n\n\n\n

        C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t s\u1eed d\u1ee5ng th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch \u0111\u1ec3 x\u00e1c minh r\u1eb1ng s\u1ea3n ph\u1ea9m c\u1ee7a h\u1ecd \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n ng\u00e0nh, ch\u1eb3ng h\u1ea1n nh\u01b0 ASTM D1004<\/strong>, \u0111\u1ed3ng th\u1eddi \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c v\u1eadt li\u1ec7u s\u1ebd ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang nh\u01b0 mong \u0111\u1ee3i trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

        \u0110\u1ed9 b\u1ec1n x\u00e9 theo ti\u00eau chu\u1ea9n ASTM v\u00e0 t\u1ea7m quan tr\u1ecdng c\u1ee7a n\u00f3 trong th\u1eed nghi\u1ec7m v\u1eadt li\u1ec7u<\/h2>\n\n\n\n

        \u0110\u1ed9 b\u1ec1n k\u00e9o theo ti\u00eau chu\u1ea9n ASTM<\/strong> nh\u01b0 ASTM D1004<\/strong> l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 \u0111\u1ed9 b\u1ec1n r\u00e1ch theo y\u00eau c\u1ea7u. C\u00e1c ti\u00eau chu\u1ea9n n\u00e0y gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t x\u00e1c \u0111\u1ecbnh nh\u1eefng \u0111i\u1ec3m y\u1ebfu c\u1ee7a v\u1eadt li\u1ec7u v\u00e0 cung c\u1ea5p m\u1ed9t th\u01b0\u1edbc \u0111o kh\u00e1ch quan \u0111\u1ec3 so s\u00e1nh c\u00e1c lo\u1ea1i m\u00e0ng ho\u1eb7c v\u1eadt li\u1ec7u kh\u00e1c nhau. \u0110\u1ed9 b\u1ec1n r\u00e1ch \u0111\u1eb7c bi\u1ec7t quan tr\u1ecdng trong c\u00e1c ng\u00e0nh nh\u01b0 \u0111\u00f3ng g\u00f3i, \u00f4 t\u00f4 v\u00e0 d\u1ec7t may, n\u01a1i t\u00ednh to\u00e0n v\u1eb9n v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/p>\n\n\n\n

        V\u00ed d\u1ee5, m\u00e0ng bao b\u00ec d\u00f9ng trong th\u1ef1c ph\u1ea9m v\u00e0 d\u01b0\u1ee3c ph\u1ea9m ph\u1ea3i c\u00f3 \u0111\u1ed9 b\u1ec1n r\u00e1ch \u0111\u1ee7 cao \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh x\u1eed l\u00fd, v\u1eadn chuy\u1ec3n v\u00e0 b\u1ea3o qu\u1ea3n. B\u1eb1ng c\u00e1ch \u00e1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n ASTM, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng v\u1eadt li\u1ec7u bao b\u00ec c\u1ee7a h\u1ecd s\u1ebd kh\u00f4ng d\u1ec5 b\u1ecb r\u00e1ch, t\u1eeb \u0111\u00f3 b\u1ea3o v\u1ec7 s\u1ea3n ph\u1ea9m b\u00ean trong kh\u1ecfi b\u1ecb nhi\u1ec5m b\u1ea9n ho\u1eb7c h\u01b0 h\u1ecfng.<\/p>\n\n\n\n

        K\u1ebft lu\u1eadn: T\u1ea1i sao vi\u1ec7c ki\u1ec3m tra \u0111\u1ed9 b\u1ec1n k\u00e9o l\u1ea1i quan tr\u1ecdng<\/h2>\n\n\n\n

        Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n k\u00e9o<\/strong> l\u00e0 m\u1ed9t quy tr\u00ecnh quan tr\u1ecdng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a v\u1eadt li\u1ec7u trong nhi\u1ec1u ng\u00e0nh c\u00f4ng nghi\u1ec7p kh\u00e1c nhau. S\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p nh\u01b0 ASTM D1004<\/strong> v\u00e0 X\u00e9t nghi\u1ec7m n\u01b0\u1edbc m\u1eaft Graves<\/strong>, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 thu \u0111\u01b0\u1ee3c nh\u1eefng th\u00f4ng tin qu\u00fd gi\u00e1 v\u1ec1 \u0111\u1ed9 b\u1ec1n r\u00e1ch c\u1ee7a v\u1eadt li\u1ec7u, t\u1eeb \u0111\u00f3 gi\u00fap h\u1ecd c\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n\n\n\n

        \u00c1p d\u1ee5ng c\u00f4ng ngh\u1ec7 ti\u00ean ti\u1ebfn m\u00e1y th\u1eed \u0111\u1ed9 b\u1ec1n ch\u1ed1ng r\u00e1ch<\/strong> Vi\u1ec7c t\u00edch h\u1ee3p c\u00e1c thi\u1ebft b\u1ecb n\u00e0y v\u00e0o quy tr\u00ecnh ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 \u1ed5n \u0111\u1ecbnh v\u00e0 \u0111\u00e1ng tin c\u1eady. C\u00e1c thi\u1ebft b\u1ecb n\u00e0y cung c\u1ea5p c\u00e1c s\u1ed1 li\u1ec7u \u0111o l\u01b0\u1eddng ch\u00ednh x\u00e1c v\u1ec1 \u0111\u1ed9 b\u1ec1n r\u00e1ch, gi\u00fap c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t t\u1ea1o ra nh\u1eefng s\u1ea3n ph\u1ea9m ch\u1ea5t l\u01b0\u1ee3ng cao, \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ng\u00e0nh c\u00f4ng nghi\u1ec7p t\u01b0\u01a1ng \u1ee9ng.<\/p>\n\n\n\n

        B\u1eb1ng c\u00e1ch t\u1eadn d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p v\u00e0 c\u00f4ng c\u1ee5 th\u1eed nghi\u1ec7m n\u00e0y, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t c\u00f3 th\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m, t\u0103ng m\u1ee9c \u0111\u1ed9 h\u00e0i l\u00f2ng c\u1ee7a kh\u00e1ch h\u00e0ng v\u00e0 gi\u1ea3m thi\u1ec3u r\u1ee7i ro h\u1ecfng h\u00f3c s\u1ea3n ph\u1ea9m do ch\u1ea5t l\u01b0\u1ee3ng v\u1eadt li\u1ec7u k\u00e9m. \u0110\u1ea7u t\u01b0 v\u00e0o c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n x\u00e9 \u0111\u00e1ng tin c\u1eady l\u00e0 m\u1ed9t b\u01b0\u1edbc quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 xu\u1ea5t s\u1eafc trong s\u1ea3n ph\u1ea9m v\u00e0 \u0111\u1ea3m b\u1ea3o tu\u1ed5i th\u1ecd c\u1ee7a v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u1ee9ng d\u1ee5ng quan tr\u1ecdng.<\/p>","protected":false},"excerpt":{"rendered":"

        Th\u1eed nghi\u1ec7m \u0111\u1ed9 b\u1ec1n r\u00e1ch l\u00e0 m\u1ed9t quy tr\u00ecnh thi\u1ebft y\u1ebfu \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 b\u1ec1n v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a v\u1eadt li\u1ec7u, \u0111\u1eb7c bi\u1ec7t trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 bao b\u00ec, d\u1ec7t may v\u00e0 nh\u1ef1a. Th\u1eed nghi\u1ec7m n\u00e0y \u0111o l\u01b0\u1eddng kh\u1ea3 n\u0103ng ch\u1ed1ng r\u00e1ch c\u1ee7a v\u1eadt li\u1ec7u, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00e0ng nh\u1ef1a ho\u1eb7c t\u1ea5m nh\u1ef1a, khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c. K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m cung c\u1ea5p d\u1eef li\u1ec7u qu\u00fd gi\u00e1 cho c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t v\u00e0 \u0111\u1ed9i ng\u0169 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ec3 [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-939","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/posts\/939","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/comments?post=939"}],"version-history":[{"count":0,"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/posts\/939\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/media?parent=939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/categories?post=939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.teartester.com\/vi\/wp-json\/wp\/v2\/tags?post=939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}