{"id":239,"date":"2010-08-10T14:41:06","date_gmt":"2010-08-10T06:41:06","guid":{"rendered":"\/\/m.letratesoro.com\/2010\/08\/flexural-strength\/"},"modified":"2023-12-31T22:08:22","modified_gmt":"2023-12-31T14:08:22","slug":"flexural-strength","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2010\/08\/flexural-strength\/","title":{"rendered":"Flexural Strength(\u5f4e\u66f2\u5f37\u5ea6)"},"content":{"rendered":"

Flexural Strength (\u5f4e\u66f2\u5f37\u5ea6)<\/font><\/h4>\n

\u300c\u5f4e\u66f2\u5f37\u5ea6\u300d\u53c8\u7a31\u6297\u5f4e\u6298\u5f37\u5ea6(Bending Strength)\uff0c\u7cfb\u6307\u7269\u4ef6\u88ab\u5f4e\u66f2\u65b7\u88c2\u524d\u6240\u80fd\u627f\u53d7\u7684\u6700\u5927\u61c9\u529b\uff0c\u4e3b\u8981\u76ee\u7684\u5728\u6e2c\u5b9a\u5851\u81a0\u7684\u8010\u5f4e\u6298\u80fd\u529b\u3002\u5176\u55ae\u4f4d\u53ef\u4ee5\u662f Kg\/cm2<\/sup> \u6216 MPa\u3002\u4e00\u822c\u71b1\u56fa\u6027<\/font><\/strong>\u5851\u81a0\u7684\u5f4e\u66f2\u5f37\u5ea6\u53ca\u5f4e\u66f2\u6a21\u6578\u90fd\u8f03\u71b1\u5851\u6027<\/font><\/strong>\u7684\u5851\u81a0\u70ba\u9ad8\u3002<\/font><\/p>\n

<\/p>\n

\u5f4e\u66f2\u5f37\u5ea6\u7684\u8a66\u9a57\u65b9\u6cd5<\/font><\/h4>\n

\u300c\u5f4e\u66f2\u5f37\u5ea6\u300d\u7684\u6e2c\u8a66\u65b9\u6cd5\u901a\u5e38\u63a1\u7528 ASTM D790 \u6216\u662f ISO 178 \u898f\u7bc4\u3002ASTM \u4e00\u822c\u63a1\u7528 3.2mm(\u539a) x 12.7mm(\u5bec) x 125mm(\u9577) (0.125" x 0.5" x 5.0") \u7684\u5851\u81a0\u9577\u689d\u6a23\u54c1\uff0c\u800c ISO \u5247\u63a1\u7528 4mm x 10mm x 80mm \u7684\u9577\u689d\u6a23\u54c1\uff0c\u6e2c\u8a66\u6642\u628a\u6a23\u54c1\u653e\u5728\u8ddd\u96e2\u4e00\u5b9a\u7684\u5169\u500b\u56fa\u5b9a\u652f\u9ede(fixed anvils)\u4e0a\uff0c\u7136\u5f8c\u7528 15 mm\/min \u7684\u901f\u5ea6\u7531\u4e0a\u5f80\u4e0b\u7528\u4e00\u9ede(\u4e09\u9ede\u6e2c\u8a66\u6cd5)\u52a0\u58d3\u65bc\u5169\u500b\u652f\u9ede\u7684\u6b63\u4e2d\u592e\uff0c\u76f4\u5230\u6a23\u54c1\u65b7\u88c2\u6216\u662f\u8d85\u904e\u4e00\u5b9a\u6975\u9650\u3002<\/font><\/p>\n

\u4e5f\u53ef\u4ee5\u63a1\u7528\u56fa\u5b9a\u8ddd\u96e2\u7684\u5169\u9ede\u65bd\u58d3\u65bc\u5169\u652f\u9ede\u7684\u5e73\u5747\u4e2d\u592e\uff0c\u7a31\u70ba\u56db\u9ede\u6e2c\u8a66\u6cd5\u3002\u4f46\u4e00\u822c\u90fd\u63a1\u7528\u4e09\u9ede\u6e2c\u8a66\u6cd5\u3002<\/font><\/p>\n

\u8acb\u6ce8\u610f\uff1a\u5716\u7247\u53ea\u662f\u793a\u610f\u5716\uff0c\u6839\u64da\u898f\u5b9a\uff0c\u5176\u8207\u5851\u81a0\u6a23\u54c1\u63a5\u89f8\u7684\u4f4d\u7f6e\u9700\u8981\u88fd\u4f5c\u5713\u89d2(radius)\u4ee5\u907f\u514d\u61c9\u529b\u96c6\u4e2d\u3002<\/font><\/p>\n

Flexural strength (stress) is a measure of how much force a test bar can support before breaking and is calculated using a three point bending formula.<\/font><\/p>\n

 \"\u5f4e\u66f2\u5f37\u5ea6(Flexural<\/p>\n

Flexural Stress(\u5f4e\u66f2\u61c9\u529b)<\/font><\/h4>\n

\u8a66\u9a57\u6642\u901a\u5e38\u8981\u6c42\u8a08\u7b97\u8a66\u9a57\u6a23\u54c1\u5728\u61c9\u8b8a 5\uff05\u672a\u6298\u65b7\u7684\u5f4e\u66f2\u61c9\u8b8a\u60c5\u6cc1\u4e0b\u6240\u80fd\u627f\u53d7\u7684\u5f4e\u66f2\u61c9\u529b\u3002<\/font><\/p>\n

Flexural stress at 5% strain is a measure of the force required to bend the test bar a certain amount and is used when the test bar bends too far without breaking.<\/font><\/p>\n

Flexural Modulus(\u5f4e\u66f2\u6a21\u6578)<\/font><\/h4>\n

\u5f4e\u66f2\u6a21\u6578(Flexural Modulus) = \u61c9\u529b(Stress) \/ \u61c9\u8b8a(Strain)<\/font><\/p>\n

\u5728\u5f48\u6027\u9650\u5ea6\u5167\uff0c\u7269\u9ad4\u53d7\u5230\u61c9\u529b\u7684\u58d3\u8feb\uff0c\u6240\u7522\u751f\u5f4e\u66f2\u8b8a\u5f62\u7684\u7684\u6bd4\u4f8b\uff0c\u7a31\u70ba\u5f4e\u66f2\u6a21\u6578\u3002<\/font><\/p>\n

\u5851\u81a0\u6a23\u54c1\u5728\u8a66\u9a57\u7684\u521d\u671f\uff0c\u5176\u61c9\u529b(Stress)\u8207\u61c9\u8b8a(Strain)\u7d04\u7576\u6210\u7dda\u6027\u6b63\u6bd4\uff0c\u5f4e\u66f2\u6a21\u6578\u5c31\u53d6\u9019\u5c0d\u7dda\u6027\u6b63\u6bd4\u4f86\u7576\u4f5c\u53c3\u8003\u3002<\/font><\/p>\n

Flexural modulus is a measure of stiffness or rigidity and is calculated by dividing the change in stress by the change in strain at the beginning of the test.<\/font> <\/font><\/p>\n

\"Flexural <\/p>\n

\u4e00\u822c\u5851\u81a0\u7684\u5f4e\u66f2\u5f37\u5ea6(Flexural Strength)\u8207\u5f4e\u66f2\u6a21\u6578(Flexural Modulus)<\/font><\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5851\u81a0\u6750\u6599<\/font><\/td>\n\n

Flexural Strength
(MPa)<\/font><\/p>\n<\/td>\n

\n

Flexural Modulus
(GPa)<\/font><\/p>\n<\/td>\n<\/tr>\n

ABS<\/font><\/td>\n\n

75<\/font><\/p>\n<\/td>\n

\n

2.5<\/font><\/p>\n<\/td>\n<\/tr>\n

ABS + 30% GF<\/font><\/td>\n\n

120<\/font><\/p>\n<\/td>\n

\n

7<\/font><\/p>\n<\/td>\n<\/tr>\n

Acetal Copolymer<\/font><\/td>\n\n

85<\/font><\/p>\n<\/td>\n

\n

2.5<\/font><\/p>\n<\/td>\n<\/tr>\n

Acetal Copolymer + 30% GF<\/font><\/td>\n\n

150<\/font><\/p>\n<\/td>\n

\n

7.5<\/font><\/p>\n<\/td>\n<\/tr>\n

Acrylic (\u58d3\u514b\u529b)<\/font><\/td>\n\n

100<\/font><\/p>\n<\/td>\n

\n

3<\/font><\/p>\n<\/td>\n<\/tr>\n

Polyamide-lmide<\/font><\/td>\n\n

175<\/font><\/p>\n<\/td>\n

\n

5<\/font><\/p>\n<\/td>\n<\/tr>\n

Nylon 6 (\u5c3c\u9f8d6)<\/font><\/td>\n\n

85<\/font><\/p>\n<\/td>\n

\n

2.3<\/font><\/p>\n<\/td>\n<\/tr>\n

Polycarbonate (PC)<\/font><\/td>\n\n

90<\/font><\/p>\n<\/td>\n

\n

2.3<\/font><\/p>\n<\/td>\n<\/tr>\n

Polyethylene, MDPE<\/font><\/td>\n\n

40<\/font><\/p>\n<\/td>\n

\n

0.7<\/font><\/p>\n<\/td>\n<\/tr>\n

Polyethylene Terephthalate (PET)<\/font><\/td>\n\n

80<\/font><\/p>\n<\/td>\n

\n

1<\/font><\/p>\n<\/td>\n<\/tr>\n

Polyimide<\/font><\/td>\n\n

140<\/font><\/p>\n<\/td>\n

\n

3<\/font><\/p>\n<\/td>\n<\/tr>\n

Polyimide + GF<\/font><\/td>\n\n

270<\/font><\/p>\n<\/td>\n

\n

12<\/font><\/p>\n<\/td>\n<\/tr>\n

Polypropylene<\/font><\/td>\n\n

40<\/font><\/p>\n<\/td>\n

\n

1.5<\/font><\/p>\n<\/td>\n<\/tr>\n

Polystyrene<\/font><\/td>\n\n

70<\/font><\/p>\n<\/td>\n

\n

2.5<\/font><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\n

\u56de\u5230\u300b<\/font>\u5851\u81a0\u5c04\u51fa<\/font><\/a> \u9996\u9801 <\/font><\/p>\n

\u5ef6\u4f38\u95b1\u8b80\uff1a<\/font>
\u5851\u81a0\u6210\u54c1\u8106\u88c2\u7684\u53ef\u80fd\u539f\u56e0<\/font><\/a>
\u96a8\u8ac7\u5851\u81a0\u8106\u88c2\u7684\u5371\u6a5f\u8655\u7406\u53ca\u61c9\u8b8a\u7a0b\u5e8f<\/font><\/a>
\u4e03\u500b\u65b9\u6cd5\u6559\u4f60\u5982\u4f55\u5224\u5ea6\u5851\u81a0\u5ee0\u662f\u5426\u6dfb\u52a0\u4e86\u4e8c\u6b21\u6599 (Re-grind resin)<\/font><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Flexural Strength (\u5f4e\u66f2\u5f37\u5ea6) …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,192],"tags":[],"aioseo_notices":[],"views":65521,"_links":{"self":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/239"}],"collection":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/comments?post=239"}],"version-history":[{"count":1,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/239\/revisions"}],"predecessor-version":[{"id":8725,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/239\/revisions\/8725"}],"wp:attachment":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/media?parent=239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/categories?post=239"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/tags?post=239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}