失效分析

This thesis addresses some key issues in a flip chip on board assembly. They include computer simulation, assembly process, reliability test, and failure analysis, et al.

本论文研究了一种有机印制板上倒装芯片封装中的计算机模拟设计、工艺、可靠性测试、失效分析等方面的问题。

In thermal cycling, electrical resistance of solder joints in daisy chain configured assembly was measured. At the same time, a variety of failure analytical tools were employed to inspect the damages in the assembly including solder joint crack, underfill delamination and crack.

在加速试验过程中，测量电参数的同时，利用多种失效分析方法详细研究了封装中的缺陷和损伤，如焊点和下部填充料中的裂缝、以及下部填充料与芯片之间的分层。

This paper introduces the failure analysis of Cr12MoV steel cold-blanking die, forging and the improvement measure of heat treatment process.

介绍了Crl2MoV钢冷冲裁模的失效分析以及锻造、热处理工艺的改进措施。

This paper introduces the failure analysis of Cr12MoV steel cold-blanking die. Forging and improvement measure of heat treatment process.

杂谈摘要：介绍了Crl2MoV钢冷冲裁模的热处理工艺及失效分析以及锻造、热处理工艺的改进措施。

Combined with the macro-morphology appearance analysis and working conditions of failure casing, the paper reached a conclusion that it is due to the impact and friction which come from the drill tools made the fatigue cracks formation on the casing thread root, and eventually leading to casing rupture failure, the material defects in failure casing accelerated crack initiation and growth.

摘 要：某井在钻井作业过程中，发生了上层Φ244.5 mm技术套管断裂失效事故，为了分析事故原因，对失效套管材料的化学成分、金相组织和力学性能进行了检测分析，结合套管失效形貌的宏观分析和套管使用过程中的现场工况分析，得出了套管螺纹发生断裂失效的原因是钻具对套管的撞击、摩擦，使套管螺纹根部产生疲劳裂纹，最终导致套管断裂失效，失效套管的材料缺陷加速了裂纹的萌生和扩展。

Utilization and Failure Analysis of Cast Hot-forged Dies.

精铸热锻模具的应用及失效分析。

Master's degree above preferred, major in material technology, mechanical properties test for material failure analysis, NDT, physical and chemical testing, machining, precision and ultra-precision machining, non conventional machining, hot-work, precision forging, surface engineering and related area.

硕士研究生以上学历优先，各类材料技术、材料力学性能表征与失效分析、无损检测与理化测试、机械加工、精密和超精密加工、特种加工、热加工及精密成形、连接、表面工程等相关专业。

Die Bonders, Wire Bonders, Packaging Tools, Assembly Robotics, Assembly Test, Wafer Probers, Device Handlers, Other Automatic Test Equipment, Reliability Test, Failure Analysis Test Instruments, Clean Room, Gas Handling Equipment, Chemical Handling Equipment, Facilities Equipment, Vacuum Pumps, tape and reel, etc.

模具粘合机，焊线机，包装工具，装配机器人，装配测试，晶圆probers ，装置的处理，其它产品自动测试设备，可靠性试验，失效分析测试仪器，无尘室，气体处理设备，化学处理设备，设施，设备，真空泵，磁带和卷轴等。

In consideration of thread fracture of 3515-type plunger pump head widely used in oilfield,the failure analysis is given.

针对在油田广泛应用的3515型柱塞泵液力端一体泵头体存在的螺纹断裂问题，进行失效分析，提出3种改进结构，有广泛的应用前景和市场效益。

For this reason, test assessment of fatigue property of wire rope winding sheaves, influence of groove material of sheave on fatigue life of wire rope, fatigue failure analysis of wire rope and microstructure of wire rope have been studied by a new type electro hydraulic servo automatic wire rope–sheave synthetic tester, scanning electron microscopy, micro-hardness measurement, imagine processing and so on.

为此，本文采用新型电液伺服式全自动钢丝绳－滑轮综合疲劳试验装置，综合应用扫描电子显微镜、显微硬度测试和图象处理等技术，对绕滑轮工作钢丝绳的疲劳行为特征和损伤机理进行了系统深入的研究，主要包括疲劳性能试验评价、滑轮材质对钢丝绳疲劳寿命影响、钢丝绳疲劳失效分析和钢丝绳显微组织等的研究。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。