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1970年,国外一架大型运输机失事,百余人死伤。事后,经过鉴定,人们发现造成这次事故的罪魁祸首是飞机金属结构中的几个微小气泡。小小的气泡为什么会导致如此严重的后果?原来,金属中存在气泡,就意味着存在孔洞,好比竹筷子被虫蛀了洞,结构强度降低,受力时有洞的地方很容易崩坏。为了保证安全,人们对飞机上使用的金属零件作出了严格规定,特别是受力结构中的关键零件。因此,所有装配飞机的金属
In 1970, a large foreign transport plane crashed and more than 100 people died of injuries. Afterwards, after appraisal, people found that the culprit causing the accident was a few tiny bubbles in the metal structure of the aircraft. The reason why small bubbles lead to such serious consequences? It turned out that the existence of bubbles in the metal, which means that there is a hole, such as bamboo chopsticks were moth-eaten hole, the structural strength decreases, the force of the cave where it is easy to collapse. In order to ensure safety, people made strict regulations on the metal parts used on the aircraft, especially the key parts in the stressed structure. Therefore, all the metal of the aircraft is assembled