从泰坦尼克号的沉没到世贸大楼的倒塌（From the sinking of the Titanic to the collapse of the world trade center）.doc

从泰坦尼克号的沉没到世贸大楼的倒塌（From the sinking of the Titanic to the collapse of the world trade center） Your entry is titled fracture failure of metal alloy material. I heard that you have added the analysis of the cause analysis of the Titanic cruise ship fracture.   to. I read this example in an English textbook, which only listed this question as the after-school puzzle. I think everyone is familiar with the Titanic incident. If you are familiar with the material from a professional perspective, students will feel more original.   fracture is one of the most dangerous engineering components, especially the brittle fracture, it is a sudden destruction, no obvious signs before fracture, it is often caused disastrous damage accident. Before I get to the basic concept of breaking, I put in a movie clip of Titanics sinking. The Titanic, which is very familiar, was the largest and most luxurious liner of the time, with a displacement of 4,600 tons and is known as the sea capital. But it was such a luxury liner that was supposed to be unsinkable that would have generated more than 90 meters of crack after a collision with the iceberg, which sank in just three hours. This is the mystery of the past 100 years. Scientists believe the accident is closely related to the material, based on the analysis of the ships wreckage from the sea floor. Students of the material major heard the face of the town suddenly.   I went on to say, the Titanic sank after hitting an iceberg, the key lies not in the ship into the water, but to hit an iceberg, the front was broken, the first into the water, lead to ship upright, then ship 1 to bang is broken! And lets think about it, its kind of brittle, like glass. But the steel of 20 is generally shown as toughness! Why is it a brittleness?   the students are anxious to know the secret.   but I stop here, dont try so hard, we first analyze the basic concept of rupture. This is the set pen and the customs that Mr Xue teaches. It was as if the stud