{"id":3815,"date":"2015-12-30T08:18:00","date_gmt":"2015-12-30T00:18:00","guid":{"rendered":"\/\/m.letratesoro.com\/?p=3815"},"modified":"2018-08-11T15:53:57","modified_gmt":"2018-08-11T07:53:57","slug":"bga-crack-solution","status":"publish","type":"post","link":"\/\/m.letratesoro.com\/2015\/12\/bga-crack-solution\/","title":{"rendered":"[\u6848\u4f8b]BGA\u932b\u7403\u958b\u88c2\u4e0d\u826f\uff0c\u5229\u7528\u61c9\u8b8a\u8a08\u78ba\u8a8d\u6a5f\u69cb\u8a2d\u8b8a\u5c0d\u7b56\u524d\u5f8c\u6539\u5584\u72c0\u6cc1"},"content":{"rendered":"

\"[\u6848\u4f8b]BGA\u932b\u7403\u88c2\u958b\u7684\u6539\u5584\u5c0d\u7b56\"<\/p>\n

\u4e00\u822c\u516c\u53f8\u7684\u65b0\u7522\u54c1\u958b\u767c\u5076\u800c\u6703\u9047\u5230\u88f8\u6a5f\u9ad8\u8655\u843d\u4e0b\u7684\u3010\u885d\u64ca\u6e2c\u8a66\uff08drop test\uff09<\/a>\u3011\u5f8c\u767c\u751f<\/font>BGA\u932b\u7403\u88c2\u958b<\/font>\u7684\u554f\u984c\uff0c\u5982\u679cRD\u6709\u6bd4\u8f03\u597d\u7684sense\uff0c\u5c31\u61c9\u8a72\u628a\u7522\u54c1\u62ff\u53bb\u505a\u4e00\u4e0b\u61c9\u529b\u61c9\u8b8a\u5206\u6790\uff0c\u800c<\/font>\u4e0d\u662f\u76f4\u63a5\u5c31\u628a\u6240\u6709\u7684BGA\u6389\u843d\u554f\u984c\u90fd\u8cf4\u7d66\u88fd\u9020\u5de5\u5ee0\u7684SMT\u88fd\u7a0b\u3002<\/font><\/p>\n

\u5c31\u5de5\u4f5c\u718a\u7684\u7d93\u9a57\u4f86\u770b\uff0cBGA\u932b\u7403\u88c2\u958b\u7684\u554f\u984c\u5176\u5be6\u5f88\u96e3\u50c5\u9760\u5de5\u5ee0\u7684\u88fd\u7a0b\u7ba1\u7406\u8207\u52a0\u5f37\u710a\u932b\u4f86\u5f97\u5230\u5168\u9762\u6539\u5584\uff0c\u5982\u679c\u7522\u54c1\u8a2d\u8a08\u6642RD\u53ef\u4ee5\u591a\u51fa\u4e00\u9ede\u529b\u6c23\uff0c\u88fd\u9020\u4e0a\u5c31\u6703\u7701\u4e0b\u5f88\u591a\u7684\u6210\u672c\u3002<\/font><\/p>\n

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<\/p>\n

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\u5229\u7528\u61c9\u8b8a\u8a08(Strain Gauge)\u9a57\u8b49\u6a5f\u69cb\u8a2d\u8a08\u8b8a\u66f4\u524d\u5f8c\u5c0dBGA\u932b\u7403\u958b\u88c2\u4f4d\u7f6e\u7684\u61c9\u8b8a\u91cf\u5206\u6790<\/strong><\/font><\/p>\n

\u4ee5\u4e0b\u5c31\u662f\u9019\u6b3e\u7522\u54c1\u7684\u5927\u6982\u8a2d\u8a08\u5916\u578b\u8207BGA\u6240\u5728\u4f4d\u7f6e\uff0c\u70ba\u4e86\u65b9\u4fbf\u5ba2\u6236\u4f7f\u7528\u6642\u4e0d\u81f3\u65bc\u767c\u751f\u87a2\u5e55\u53cd\u5149\uff0c\u6240\u4ee5\u7522\u54c1\u8a2d\u8a08\u4e86\u4e00\u500b\u985e\u4f3c\u6536\u9280\u6a5f\u7684\u50be\u659c\u87a2\u5e55\uff0c\u4e5f\u5c31\u662f\u9019\u500b\u50be\u659c\u89d2\u8b93BGA\u96f6\u4ef6\u5728\u7522\u54c1\u505a\u6b63\u80cc\u9762\u843d\u4e0b\u6e2c\u8a66\u6642\u627f\u53d7\u4e86\u5de8\u5927\u7684\u96fb\u8def\u677f\u8b8a\u5f62\u91cf\uff0c\u4ee5\u81f4\u9020\u6210BGA\u932b\u7403\u88c2\u958b\uff0c\u56e0\u70ba\u7522\u54c1\u7684\u5074\u908a(side)\u53ca\u89d2\u843d(corner)\u6454\u843d\u90fd\u6c92\u6709\u767c\u73fe\u554f\u984c\uff0c\u4ee5\u524d\u7684\u4f8b\u5b50\u5e7e\u4e4e\u90fd\u662f\u5728\u89d2\u843d\u6454\u51fa\u554f\u984c\u7684\u3002<\/font><\/p>\n

\"BGA-ball-crack-improvement\"<\/p>\n

\u65e2\u7136\u77e5\u9053\u53ef\u80fd\u7684\u554f\u984c\u51fa\u5728\u96fb\u8def\u677f\u8b8a\u5f62\u91cf\u904e\u5927<\/font>\uff0c\u65bc\u662f\u5728\u96fb\u8def\u677f\u4e0a\u9ecf\u8cbc\u3010\u61c9\u8b8a\u8a08(Strain Gauge)<\/a>\u3011\uff0c\u6240\u5148\u91cf\u6e2c\u672a\u6539\u5584\u524d\u7684\u61c9\u8b8a\u91cf\u6578\u64da\uff0c\u7136\u5f8c\u5728\u96fb\u8def\u677f\u7b49\u4e3b\u8981\u7d44\u4ef6\u4e0d\u8b8a\u5f97\u60c5\u6cc1\u4e0b\uff0c\u66f4\u63db\u6539\u5584\u5f8c\u7684\u6a5f\u69cb\u518d\u505a\u4e00\u6b21\u61c9\u8b8a\u91cf\u7684\u91cf\u6e2c\u3002<\/font><\/p>\n

\u6539\u5584\u65b9\u6cd5\u662f\u5728BGA\u96f6\u4ef6\u7684\u9644\u8fd1\u65b0\u589e\u5851\u81a0\u6a5f\u6e9d\u808b\u67f1(rib)\u4f86\u9802\u4f4f\u96fb\u8def\u677f\u4ee5\u964d\u4f4e\u96fb\u8def\u677f\u5728\u843d\u4e0b\u6642\u7684\u8b8a\u5f62\u91cf\uff0c\u53c3\u8003\u4e0a\u5716\u7684[New add rib]\u3002<\/font><\/p>\n

\"BGA_crack_stress_gauge\"\"BGA\u932b\u7403\u958b\u88c2\u6539\u5584\u65b9\u6848\"<\/p>\n

\u56e0\u70ba\u5728\u505a\u9019\u500b\u52d5\u4f5c\u6642\u7522\u54c1\u7684\u5927\u90e8\u5206\u8a2d\u8a08\u90fd\u5df2\u7d93\u5b8c\u6210\u4e86\uff0c\u6240\u4ee5\u6539\u5584\u7684\u65b9\u6cd5\u5c31\u662f\u76e1\u91cf\u627e\u5230\u4e00\u500b\u7a7a\u9593\u53ef\u4ee5\u7528\u4f86\u589e\u52a0\u652f\u6490\u67f1\uff0c\u8b93\u96fb\u8def\u677f\u5728\u843d\u4e0b\u8b8a\u5f62\u6642\u6709\u786c\u7269\u53ef\u4ee5\u652f\u6490\u4f4f\uff0c\u4ee5\u964d\u4f4e\u5176\u8b8a\u5f62\u91cf\u3002<\/font><\/p>\n

\"\u65e2\u7136\u77e5\u9053\u53ef\u80fd\u7684\u554f\u984c\u51fa\u5728\u96fb\u8def\u677f\u8b8a\u5f62\u91cf\u904e\u5927\uff0c\u65bc\u662f\u5728\u96fb\u8def\u677f\u4e0a\u9ecf\u8cbc\u61c9\u529b\u8a08(Stress<\/p>\n

\u61c9\u8b8a\u8a08\u91cf\u6e2c\u6a5f\u69cb\u6539\u5584\u524d\u5f8c\u7684\u61c9\u8b8a\u91cf<\/font><\/strong><\/p>\n

\u4e0b\u8868\u5217\u51fa\u6539\u5584\u524d\u8207\u6539\u5584\u5f8c(\u589e\u52a0rib)\u7684\u5fae\u61c9\u8b8a\u91cf(Micro-Strain\uff0cx106<\/sup>)\u5be6\u969b\u91cf\u6e2c\u503c\u3002\u5c31\u5982\u540c\u9810\u671f\u7684\uff0c\u5728\u6b63\u9762\uff08\u50be\u659c\u9762\uff09\u843d\u4e0b\u6642\u7684\u61c9\u8b8a\u91cf\u6539\u5584\u9054\u5230106\uff0c\u56e0\u70ba\u7522\u54c1\u6b63\u9762(Top)\u5916\u578b\u6709\u500b\u5f4e\u66f2\u50be\u659c\u89d2\uff0c\u6bd4\u8f03\u5bb9\u6613\u56e0\u70ba\u5916\u529b\u800c\u9020\u6210\u5f4e\u66f2\uff1b\u800c\u80cc\u9762\uff08Bottom\uff09\u70ba\u5e73\u9762\u843d\u4e0b\u7684\u61c9\u8b8a\u91cf\u6539\u5584\u5247\u6bd4\u8f03\u5c0f\uff0c\u53ea\u670942\u3002<\/font><\/p>\n

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<\/font><\/td>\n\u6539\u5584\u524d<\/font><\/td>\n\u6539\u5584\u5f8c<\/font><\/td>\n\u6539\u5584\u91cf<\/font><\/td>\n<\/tr>\n
\u6b63\u9762\u843d\u6454<\/font><\/td>\n-186<\/font><\/td>\n-80<\/font><\/td>\n106<\/font><\/td>\n<\/tr>\n
\u80cc\u9762\u843d\u6454<\/font><\/td>\n203<\/font><\/td>\n161<\/font><\/td>\n42<\/font><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/font><\/p>\n

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\n

\u5ef6\u4f38\u95b1\u8b80\uff1a
<\/font>BGA\u5207\u7247\u5f8c\u5982\u4f55\u5224\u65b7\u710a\u63a5\u54c1\u8cea<\/font><\/a>
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