{"id":6888,"date":"2018-05-09T08:16:00","date_gmt":"2018-05-09T00:16:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=6888"},"modified":"2023-02-14T09:58:58","modified_gmt":"2023-02-14T01:58:58","slug":"solder-crack-study-11","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2018\/05\/solder-crack-study-11\/","title":{"rendered":"\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216BGA\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(11)\uff1f\u61c9\u529b\u662f\u9020\u6210BGA\u710a\u932b\u7834\u88c2\u7684\u6700\u5927\u5147\u624b"},"content":{"rendered":"<p align=\"center\"><font size=\"4\">\uff08\u5c0d\u65bc\u5927\u9678\u90a3\u4e9b\u76dc\u6587\u7db2\u7ad9\uff0c\u8907\u88fd\u8cbc\u4e0a\u672c\u7ad9\u6587\u7ae0\u5f8c\uff0c\u5c45\u7136\u9084\u6539\u6210\u81ea\u5df1\u516c\u53f8\u7684\u540d\u5b57\uff0c\u611f\u5230\u7121\u6065\uff01\u6587\u7ae0\u5167\u5bb9\u90e8\u4efd\u9632\u6b62\u8907\u88fd\u4f5c\u6cd5\u53ef\u80fd\u9020\u6210\u60a8\u95b1\u8b80\u7684\u4e0d\u4fbf\uff0c\u8acb\u898b\u8ad2\uff01\uff09<\/font><\/p>\n<p align=\"center\"><img decoding=\"async\" src=\"\/wp-content\/uploads\/BGA_strain_gauge_location.png\" \/><\/p>\n<p align=\"justify\"><font size=\"4\">\u524d\u9762\u7684\u7bc7\u5e45\u5de5\u4f5c\u718a\u82b1\u4e86\u8a31\u591a\u6642\u9593\u4f86\u8ac7\u8ad6\u300c\u5982\u4f55\u52a0\u5f37PCA\u7684\u7d50\u5408\u529b\u300d\uff0c\u4ee5\u53ca\u300c\u5982\u4f55\u589e\u5f37\u96fb\u5b50\u7522\u54c1\u62b5\u6297\u61c9\u529b\u7684\u80fd\u529b\u300d\u7b49\uff0c\u73fe\u5728\u6211\u5011\u7d42\u65bc\u53ef\u4ee5\u958b\u59cb\u4f86\u8ac7\u8ac7\u9020\u6210BGA\u710a\u932b\u7834\u88c2\u7684\u6700\u5927\u5147\u624b\u300e<\/font><b><font color=\"#0000ff\" size=\"5\">\u61c9\u529b(stress)<\/font><\/b><font size=\"4\">\u300f\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u6240\u8b02\u77e5\u5df1\u77e5\u5f7c\u65b9\u80fd\u767e\u6230\u767e\u52dd\uff0c\u60f3\u8981\u5fb9\u5e95\u89e3\u6c7aBGA\u710a\u932b\u7834\u88c2\u7684\u554f\u984c\uff0c\u5c31\u5fc5\u9808\u8981\u4e86\u89e3\u300c<\/font><font style=\"background-color: rgb(255, 255, 0);\" size=\"4\">\u61c9\u529b\u4f86\u81ea\u4f55\u8655?<\/font><font size=\"4\">\u300d\u624d\u80fd\u5c0d\u75c7\u4e0b\u85e5\u907f\u514d\u6216\u964d\u4f4e\u61c9\u529b\u7684\u5f71\u97ff\uff0c\u4e0d\u89e3\u6c7a\u61c9\u529b\u554f\u984c\uff0c\u5176\u4ed6\u7684\u52aa\u529b\u90fd\u53ea\u80fd\u4e8b\u500d\u529f\u534a\uff0c\u5c31\u50cf\u6574\u6cbb\u6cb3\u6c34\u6c3e\u6feb\uff0c\u758f\u901a\u6c38\u9060\u6bd4\u570d\u5835\u4f86\u5f97\u6709\u6548\u3002<\/font><\/p>\n<p><!--more--><\/p>\n<p align=\"justify\"><font size=\"4\">\u61c9\u529b\u53c8\u53ef\u4ee5\u5206\u70ba\u5167\u61c9\u529b\u53ca\u5916\u61c9\u529b\u5169\u7a2e\uff0c\u5167\u61c9\u529b\u5c6c\u65bc\u6f5b\u8b8a(creep)\u7684\u9577\u671f\u4fe1\u8cf4\u5ea6\u554f\u984c\uff0c\u672c\u6587\u57fa\u672c\u4e0a\u4e0d\u8ac7\u8ad6\u5167\u61c9\u529b\uff0c\u800c\u50c5\u91dd\u5c0d\u300c\u5916\u61c9\u529b\u300d\u4f86\u63a2\u8a0e\u3002\u5c0d\u65bc\u710a\u932b\u4f86\u8aaa\uff0c\u61c9\u529b\u5176\u5be6\u7121\u6240\u4e0d\u5728\uff0c\u800c<font style=\"background-color: rgb(255, 255, 0);\">\u61c9\u529b\u5c0d\u710a\u932b\u7834\u88c2\u7684\u6700\u5927\u5f71\u97ff\u5c31\u662f\u9020\u6210\u300c\u677f\u5f4e\u300d<\/font>\uff0c\u65e9\u671f\u7684\u6642\u5019\u96fb\u8def\u677f\u7684\u539a\u5ea6\u5927\u6982\u90fd\u8a2d\u8a08\u57281.6mm\u4ee5\u4e0a\uff0c\u800c\u4e14\u96fb\u5b50\u96f6\u4ef6\u4e5f\u9084\u7b97\u5927\u9846\u53ca\u5f37\u58ef\uff0c\u5c0d\u65bc\u7d44\u88dd\u6240\u9020\u6210\u7684\u5f4e\u66f2\u61c9\u529b\u4e5f\u90fd\u9084\u5728\u53ef\u4ee5\u627f\u53d7\u7684\u7bc4\u570d\u5167\uff0c\u4f46\u96a8\u8457\u624b\u6a5f\u7684\u98a8\u884c\uff0c\u96fb\u8def\u677f\u7684\u539a\u5ea6\u4e5f\u8d8a\u4f86\u8d8a\u8584\uff0c\u800c\u592a\u7c3f\u7684\u96fb\u8def\u677f\u53ea\u8981\u7a0d\u5fae\u7528\u9ede\u529b\u5c31\u6703\u88ab\u5f4e\u66f2\uff0c\u518d\u52a0\u4e0aBGA\u7684\u932b\u7403\u76f4\u5f91\u4e5f\u662f\u8d8a\u505a\u8d8a\u5c0f\uff0c\u5c0d\u65bc\u61c9\u529b\u7684\u627f\u53d7\u80fd\u529b\u4e5f\u5c31\u8d8a\u4f86\u8d8a\u5dee\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u9084\u597d\u73fe\u5728\u7684\u79d1\u6280\u4e5f\u8ddf\u8457\u767c\u9054\uff0c\u73fe\u5728\u60f3\u8981\u4e86\u89e3\u61c9\u529b\u5982\u4f55\u4f5c\u7528\u5728\u96fb\u8def\u677f\u4ee5\u81f4\u9020\u6210\u677f\u5f4e\uff0c\u53ef\u4ee5\u4e8b\u5148\u5229\u7528\u96fb\u8166CAD\u4f86\u6a21\u64ec\uff0c\u4e0d\u904e\u6a21\u64ec\u9700\u8981\u8f38\u5165\u8a31\u591a\u7684\u5047\u8a2d\u689d\u4ef6\uff0c\u6240\u4ee5\u7d50\u679c\u4e5f\u901a\u5e38\u8207\u4e8b\u5be6\u6709\u4e9b\u5dee\u8ddd\uff0c\u4e0d\u904e\u9084\u662f\u53ef\u4ee5\u53c3\u8003\u3002\u7b49\u5230\u677f\u5b50\u5be6\u969b\u505a\u51fa\u4f86\u4e4b\u5f8c\uff0c\u5176\u5be6\u9084\u53ef\u4ee5\u5229\u7528\u61c9\u8b8a\u61c9\u529b\u8a08(strain-stress gage)\u4f86\u91cf\u6e2c\u5404\u7a2e\u7d44\u88dd\u72c0\u6cc1\u4e0b\u96fb\u8def\u677f\u627f\u53d7\u7684\u5be6\u969b\u61c9\u529b\u3002<\/font><\/p>\n<p align=\"justify\"><font size=\"4\">\u6240\u4ee5\uff0c\u5982\u679c\u4f60\u5011\u516c\u53f8\u7684\u7522\u54c1\u65bc\u751f\u7522\u904e\u7a0b\u4e2d\u7d93\u5e38\u78b0\u5230BGA\u710a\u932b\u958b\u88c2\u6216\u662fMLCC\u96fb\u5bb9\u7834\u88c2\u7684\u554f\u984c\uff0c\u5de5\u4f5c\u718a\u5f37\u70c8\u5efa\u8b70\u4f60\u4e00\u5b9a\u8981\u4f7f\u7528\u61c9\u8b8a\u8a08(strain-stress gage)\u4f86\u91cf\u6e2c\u5404\u7a2e\u7d44\u88dd\u53ca\u6e2c\u8a66\u88fd\u7a0b\u4e2d\u6240\u5f15\u8d77\u7684\u61c9\u529b\u5927\u5c0f\uff0c\u7136\u5f8c\u91dd\u5c0d\u61c9\u529b\u8d85\u6a19\u7684\u88fd\u7a0b\u9032\u884c\u6539\u5584\u3002<\/font><\/p>\n<p><font size=\"4\">\u5efa\u8b70\u5ef6\u4f38\u95b1\u8b80\uff1a<\/font>     <br \/><a href=\"\/2014\/11\/pcb-warpage-cause-solution\/\"><font size=\"4\">\u677f\u5f4e\u677f\u7ff9\u767c\u751f\u7684\u539f\u56e0\u8207\u9632\u6b62\u7684\u65b9\u6cd5<\/font><\/a>     <br \/><a href=\"\/2017\/01\/strain-gauge\/\"><font size=\"4\">BGA\u932b\u88c2\uff0c\u4f7f\u7528\u61c9\u8b8a\u7247(Strain Gauge)\u91cf\u6e2c\u96fb\u8def\u677f\u5230\u5e95\u90a3\u500b\u74b0\u7bc0\u7522\u751f\u8f03\u5927\u8b8a\u5f62\u91cf<\/font><\/a><\/p>\n<hr \/>\n<p><strong><font size=\"4\">\u300c\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d\u300d\u7cfb\u5217\u6587\u7ae0\u5217\u8868\uff1a<\/font><\/strong> <\/p>\n<ul>\n<li><a href=\"\/?p=6831\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(1)\uff1f\u932b\u88c2\u53ea\u662f\u61c9\u529b\u5927\u65bc\u7d50\u5408\u529b\u4e4b\u5fc5\u7136\u7d50\u679c<\/font><\/a><\/li>\n<li><a href=\"\/?p=6834\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(2)\uff1fPCA\u7684\u7d50\u5408\u529b\u5305\u542b\u6709\u54ea\u4e9b\uff1f<\/font><\/a> <\/li>\n<li><font size=\"4\"><a href=\"\/?p=6837\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(3)\uff1fIMC\u662f\u826f\u597d\u710a\u932b\u7d50\u679c\u7684\u5fc5\u8981\u4e4b\u60e1<\/a><\/font><\/li>\n<li><a href=\"\/?p=6841\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(4)\uff1fPCB\u8868\u9762\u8655\u7406\u6539\u7528\u300c\u9285\u300d\u57fa\u5730<\/font><\/a><\/li>\n<li><a href=\"\/?p=6845\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(5)\uff1f\u589e\u52a0\u710a\u932b\u7684\u63a5\u89f8\u9762\u7a4d\u4ee5\u589e\u52a0\u710a\u932b\u5f37\u5ea6<\/font><\/a><\/li>\n<li><a href=\"\/?p=6858\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(6)\uff1f\u5de5\u4f5c\u718a\u500b\u4eba\u7d66BGA\u710a\u588a\u8a2d\u8a08\u7684\u5efa\u8b70<\/font><\/a><\/li>\n<li><a href=\"\/?p=6861\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(7)\uff1f\u9285\u7b94\u710a\u588a\u8207PCB\u677f\u6750\u9593\u7684\u7d50\u5408\u529b(bonding-force)<\/font><\/a><\/li>\n<li><a href=\"\/?p=6870\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(8)\uff1f\u589e\u52a0PCB\u7684\u525b\u6027(stiffness)\u4f86\u62b5\u6297\u61c9\u529b\u907f\u514d\u677f\u5f4e\u7684\u5f71\u97ff<\/font><\/a><\/li>\n<li><a href=\"\/?p=6876\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(9)\uff1f\u589e\u52a0\u96f6\u4ef6\u5c0d\u61c9\u529b\u7684\u62b5\u6297\u80fd\u529b<\/font><\/a><\/li>\n<li><a href=\"\/?p=6884\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(10)\uff1f\u900f\u904e\u6a5f\u69cb\u8a2d\u8a08\u964d\u4f4e\u61c9\u529b\u5c0d\u96fb\u8def\u677f\u8b8a\u5f62\u4e4b\u5f71\u97ff<\/font><\/a><\/li>\n<li><a href=\"\/?p=6895\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(12)\uff1f\u88fd\u9020\u5de5\u5ee0\u4e2d\u53ef\u80fd\u51fa\u73fe\u8f03\u5927\u61c9\u529b\u7684\u88fd\u7a0b<\/font><\/a><\/li>\n<li><a href=\"\/?p=6898\"><font size=\"4\">\u96fb\u5b50\u96f6\u4ef6\u6389\u843d\u6216\u932b\u88c2\u4e00\u5b9a\u662fSMT\u88fd\u7a0b\u554f\u984c\u8ff7\u601d(13)\uff1f\u61c9\u529b\u4f86\u6e90\u7684\u6700\u5927\u6311\u6230\uff1a\u4f7f\u7528\u74b0\u5883<\/font><\/a><\/li>\n<\/ul>\n<hr \/>\n<p><font size=\"4\">\u5ef6\u4f38\u95b1\u8b80\uff1a      <br \/><\/font><a href=\"\/2013\/04\/tumble-test\/\"><font size=\"4\">\u6efe\u7b52\u6e2c\u8a66(tumble test)\u7684\u65b9\u6cd5\u8207\u5931\u6548\u89e3\u6c7a\u5c0d\u7b56<\/font><\/a>     <br \/><a href=\"\/2011\/03\/bga-dropped\/\"><font size=\"4\">\u5982\u4f55\u5224\u65b7BGA\u6389\u4ef6\u662fSMT\u5de5\u5ee0\u88fd\u7a0b\u6216\u662f\u8a2d\u8a08\u554f\u984c?<\/font><\/a>     <br \/><a href=\"\/2015\/03\/component-drop-analyze\/\"><font size=\"4\">\u96fb\u8def\u677f\u96f6\u4ef6\u6389\u843d\uff0c\u8a72\u5982\u4f55\u8457\u624b\u5206\u6790\u3001\u5224\u65b7\u4e26\u91d0\u6e05\u554f\u984c\u9ede<\/font><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\uff08\u5c0d\u65bc\u5927\u9678\u90a3\u4e9b\u76dc\u6587\u7db2\u7ad9\uff0c\u8907\u88fd\u8cbc\u4e0a\u672c\u7ad9\u6587\u7ae0\u5f8c\uff0c\u5c45\u7136 &#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,20,22],"tags":[47,151,208,157],"aioseo_notices":[],"views":8728,"_links":{"self":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6888"}],"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=6888"}],"version-history":[{"count":1,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6888\/revisions"}],"predecessor-version":[{"id":10565,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/posts\/6888\/revisions\/10565"}],"wp:attachment":[{"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/media?parent=6888"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/categories?post=6888"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/m.letratesoro.com\/wp-json\/wp\/v2\/tags?post=6888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}