¸Ã±ê×¼µÄ¹Ì¶¨±àºÅΪF484£»±àÂëºóµÄÊý×Ö±íÃ÷ÁË×î³õ²ÉÓõÄÄê·Ý£¬ÔÚÐÞ¶©°æ±¾ÖÐÔò±íʾ×îа汾µÄÄê·Ý¡£À¨ºÅÖеÄÊý×ÖÔò±íʾ»ñµÃ×îÐÂÅú×¼µÄÄê·Ý¡£ÉϱêµÄÏ£À°×ÖĸÔò±íʾ×îºóÒ»´ÎÐÞ¶©»òÅú×¼ºó±àÅŵı仯Çé¿ö·Ò빫˾¡£
This standard is issued under the fixed designation F484; the number immediately following the designation indicated the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (€) indicates an editorial change since the last revision or re approval.
½«ÆäÓàÑùÆ·Ê©¼ÓÖ¸¶¨µÄ¸ººÉ£¬È¡±ß³¤Îª1/2ÖÁ5/8Ó¢´ç£¨12.7ÖÁ15.9ºÁÃ×£©µÄÕý·½ÐÎÍÑÖ¬ÃÞ»ò·¨À¼ÈÞƬ£¬Ö±½ÓÖÃÓÚ¹êÁѲâÊÔÑùÆ·µÄÕÅÁ¦Ã棨ÉÏ·½£©ÉÏ¡£½«ÍÑÖ¬ÃÞ»ò·¨À¼ÈÞƬÖÃÓÚÑùÆ·µÄÖмäÇÒʹÆäÁ½¶ËÁôÓгä×ãµÄ¿Õ¼äÒÔ·ÀÖ¹ÔÚÆä±ßÔµµ¼ÖÂÁÑÎƵÄÐγÉÓ¢Óï·Òë¡£
With the rest specimen again under the designated load, place an absorbent cotton or flannel swatch, 1/2 to 5/8 in. (12.7 to 15.9 mm) square, on the tension surface (top) of the craze test specimen directly over the fulcrum. Position the cotton or flannel swatch in the middle of the specimen so there is a clear space along each edge to avoid initiating crazing at the edge. |
|
|
|
×¢£º1¡¢ÉÏÊö·ÒëÐÐÒµÊÊÓÃÓÚ±ÊÒëºÍ¿ÚÒë·þÎñ£¬¶ø±ÊÒëÀà±ðÔòרָ¹«Ë¾¿É´¦ÀíµÄ±ÊÒëÎÄ
¡¡¡¡¡¡ ¼þ¡£
2¡¢ÈçÐèÁ˽âÏêϸÐÅÏ¢£¬Çëµã»÷ÏàÓ¦µÄÐÐÒµ»òÀ´µçÀ´º¯Ó빫˾ȡµÃÁªÏµ¡£
3¡¢Ïà¹Ø·Ò뱨¼ÛÇëµ¥»÷¶¥²¿µÄ·Òë¼Û¸ñÌåϵ²é¿´¡£ |