ambalaj, g\u0131da, t\u0131p, ila\u00e7, tekstil ve kalite kontrol kurulu\u015flar\u0131<\/strong>, Bunlar\u0131n hepsi kalite g\u00fcvencesi i\u00e7in tutarl\u0131 malzeme davran\u0131\u015f\u0131na dayan\u0131r.<\/p>\n\n\n\nASTM D1894 testi<\/strong> Kontroll\u00fc ko\u015fullar alt\u0131nda iki y\u00fczey aras\u0131ndaki s\u00fcrt\u00fcnme \u00f6zelliklerini belirlemek i\u00e7in a\u00e7\u0131k bir prosed\u00fcr\u00fcn ana hatlar\u0131n\u0131 \u00e7izer. Bu test a\u015fa\u011f\u0131dakiler i\u00e7in hayati \u00f6nem ta\u015f\u0131maktad\u0131r:<\/p>\n\n\n\n\n- Ambalaj malzemesi performans\u0131n\u0131n de\u011ferlendirilmesi<\/strong><\/li>\n\n\n\n
- \u00dcretim hatt\u0131n\u0131n sorunsuz \u00e7al\u0131\u015fmas\u0131n\u0131 sa\u011flamak<\/strong><\/li>\n\n\n\n
- Nakliye s\u0131ras\u0131nda \u00fcr\u00fcn hasar\u0131n\u0131n \u00f6nlenmesi<\/strong><\/li>\n\n\n\n
- Malzeme tutarl\u0131l\u0131\u011f\u0131 i\u00e7in m\u00fc\u015fteri gereksinimlerinin kar\u015f\u0131lanmas\u0131<\/strong><\/li>\n<\/ul>\n\n\n\n
Standarda g\u00f6re, bir COF testi<\/strong> Test malzemesiyle kaplanm\u0131\u015f veya bu malzemeden yap\u0131lm\u0131\u015f bir k\u0131za\u011f\u0131n d\u00fcz bir y\u00fczey boyunca belirli bir h\u0131z ve bas\u0131n\u00e7ta \u00e7ekilmesini i\u00e7erir. Kar\u015f\u0131la\u015f\u0131lan diren\u00e7, a\u015fa\u011f\u0131dakilerin belirlenmesine yard\u0131mc\u0131 olur statik (ba\u015flang\u0131\u00e7) ve kinetik (kayma) s\u00fcrt\u00fcnme katsay\u0131lar\u0131<\/strong>.<\/p>\n\n\n\nASTM S\u00fcrt\u00fcnme Katsay\u0131s\u0131 Parametreleri ve Ko\u015fullar\u0131<\/h2>\n\n\n\n
The ASTM s\u00fcrt\u00fcnme katsay\u0131s\u0131<\/strong> D1894'te belirtilen test a\u015fa\u011f\u0131daki ko\u015fullar alt\u0131nda ger\u00e7ekle\u015ftirilir:<\/p>\n\n\n\n\n- Test H\u0131z\u0131:<\/strong> 150 \u00b1 30 mm\/dak<\/li>\n\n\n\n
- K\u0131zak A\u011f\u0131rl\u0131\u011f\u0131:<\/strong> 200 \u00b1 5 g<\/li>\n\n\n\n
- S\u0131cakl\u0131k ve Nem:<\/strong> Tutarl\u0131l\u0131\u011f\u0131 sa\u011flamak i\u00e7in standartla\u015ft\u0131r\u0131lm\u0131\u015f \u00e7evresel ko\u015fullar<\/li>\n\n\n\n
- Numune Boyutlar\u0131:<\/strong> Genellikle 63,5 mm x 127 mm, d\u00fcz, d\u00fczg\u00fcn y\u00fczeyli<\/li>\n<\/ul>\n\n\n\n
\u0130kisi birden statik COF<\/strong> (hareketi ba\u015flatma kuvveti olarak \u00f6l\u00e7\u00fcl\u00fcr) ve kinetik COF<\/strong> (hareketi s\u00fcrd\u00fcrme kuvveti olarak \u00f6l\u00e7\u00fcl\u00fcr) hesaplan\u0131r. S\u00fcrt\u00fcnme kuvveti newton cinsinden \u00f6l\u00e7\u00fcl\u00fcr ve katsay\u0131 de\u011ferlerini belirlemek i\u00e7in k\u0131zak a\u011f\u0131rl\u0131\u011f\u0131na b\u00f6l\u00fcn\u00fcr.<\/p>\n\n\n\nASTM D1894'e G\u00f6re Ad\u0131m Ad\u0131m COF Test Y\u00f6ntemi<\/h2>\n\n\n\n
The COF test y\u00f6ntemi<\/strong> a\u015fa\u011f\u0131daki ad\u0131mlar\u0131 i\u00e7erir:<\/p>\n\n\n\n\n- Numuneleri ko\u015fulland\u0131r\u0131n<\/strong> en az 40 saat boyunca standart bir atmosferde tutulmal\u0131d\u0131r.<\/li>\n\n\n\n
- K\u0131za\u011f\u0131 yerle\u015ftirin<\/strong> (test y\u00fczeyi ile a\u015fa\u011f\u0131 bakacak \u015fekilde) taban malzemesi \u00fczerinde.<\/li>\n\n\n\n
- K\u0131za\u011f\u0131 ba\u011flay\u0131n<\/strong> bir ip veya kanca arac\u0131l\u0131\u011f\u0131yla kuvvet sens\u00f6r\u00fcne ba\u011flay\u0131n.<\/li>\n\n\n\n
- Hareketi ba\u015flat\u0131n<\/strong> sabit bir h\u0131zda ve kuvvet de\u011ferlerini kaydedin.<\/li>\n\n\n\n
- Statik COF'u belirleyin<\/strong> Hareket ba\u015flamadan \u00f6nce en y\u00fcksek kuvvetten.<\/li>\n\n\n\n
- Kinetik COF de\u011ferini belirleyin<\/strong> Sabit hareket s\u0131ras\u0131ndaki ortalama kuvvetten.<\/li>\n\n\n\n
- Sonu\u00e7lar\u0131 raporlay\u0131n<\/strong> malzeme t\u00fcr\u00fc, \u00e7evresel ko\u015fullar ve test parametreleri dahil.<\/li>\n<\/ol>\n\n\n\n
Sapmalar\u0131 \u00f6nlemek i\u00e7in do\u011fru kalibrasyon, d\u00fcz yerle\u015ftirme ve tutarl\u0131 h\u0131z \u00e7ok \u00f6nemlidir.<\/p>\n\n\n\n