دانلود کتاب تجزیه و تحلیل شکست – دستگاه های با تکنولوژی بالا

The world of failure analysis is large. We hope this work will encourage new comers, give a broader range of knowledge to the journey men/women, and give some familiar and funny examples to the old timers. In this book, we will attempt to cover only the corner of the FA world considering high tech devices and materials. So, we will leave out buildings, bridges, dams, and other large objects, as well as the mysterious area of software. The failure investigation investigating why a system fails (a phone, television, smart watch, or any other device made up of several components) is different than the FA of a single part (resistor, chip, tube), although these are in turn made up of smaller parts themselves. No matter the subject of an investigation, the goal of FA remains unchanged. To find out what caused the failure: the root cause. Even finding the root cause is rarely the end purpose. Knowing the cause allows the factory to change the processes used to make the part, to repair or clean the tools that contaminated the process, or the engineers can perform a design change to improve the end product and greatly reduce or eliminate the failure. Occasionally, the root cause determination is for the purpose of assigning responsibility in litigation/ criminal actions or other situations when the improvement of the device is not the driving purpose. This is why failing parts are sometimes referred as “golden units”, in that they are rare and valuable. They offer a chance to better understand and improve a device or process or decide who gets the gold in litigation matters. These parts are also sometimes referred to as “incident units”; however, this nomenclature is often discouraged by attorneys as it sounds bad.