珍珠港事件发生时，我叔叔即将完成他的物理硕士学位。他加入了海军，他们请他在伊利诺伊大学继续他的学业。在他拿到博士学位的过程中，海军命令他到海军研究实验室报到。在那里，他成为了乔治·欧文研究小组的一员。我们以前有他们一些实验的结果。它们是弹片，中间插着子弹。我祖父把它们当镇纸用。我认为他们的很多工作都与盔甲有关。我叔叔对纤维很感兴趣，做过防弹衣:防弹衣。他们知道织物可以阻挡子弹，就像他们编织的小股钢铁可以做到这一点一样，但在二战期间没有足够坚固的纤维。 Kevlar would come along later. When I was in my 20s I worked for a hot-air balloon manufacturer. We had a balloon rip from top to bottom, and all the occupants were killed. We were looking at a massive lawsuit. I told the owners of the company that I thought my uncle could help them. He came out to our little factory in North Carolina and met with the FAA engineers. In just a few minutes he was able to turn them completely around on their theories as to why the balloon envelope failed. My uncle was a brilliant man, and he spoke very highly of George Irwin many times in my presence.
评论
是格里菲斯
是格里菲斯。
Kirch (1898)， Inglis(1914)和Kolosov(1907)分析了应力集中(分别由于圆形，椭圆和椭圆)。但只有格里菲斯(Griffith)在分析中也考虑了裂纹表面的能量(20世纪20年代初)。
欧文的出现要晚得多——我想他是在第二次世界大战期间或之后随便出现的。
1.谢谢你的评论
1.谢谢你的评论。
许多伟大的研究者为断裂力学(工程断裂力学)领域做出了贡献。
3.每个人都知道格里菲斯在这个领域的地位(即使是像我这样的新手)。
4.这让我想到了一本书《达芬奇密码》。
海军研究实验室
珍珠港事件发生时，我叔叔即将完成他的物理硕士学位。他加入了海军，他们请他在伊利诺伊大学继续他的学业。在他拿到博士学位的过程中，海军命令他到海军研究实验室报到。在那里，他成为了乔治·欧文研究小组的一员。我们以前有他们一些实验的结果。它们是弹片，中间插着子弹。我祖父把它们当镇纸用。我认为他们的很多工作都与盔甲有关。我叔叔对纤维很感兴趣，做过防弹衣:防弹衣。他们知道织物可以阻挡子弹，就像他们编织的小股钢铁可以做到这一点一样，但在二战期间没有足够坚固的纤维。 Kevlar would come along later. When I was in my 20s I worked for a hot-air balloon manufacturer. We had a balloon rip from top to bottom, and all the occupants were killed. We were looking at a massive lawsuit. I told the owners of the company that I thought my uncle could help them. He came out to our little factory in North Carolina and met with the FAA engineers. In just a few minutes he was able to turn them completely around on their theories as to why the balloon envelope failed. My uncle was a brilliant man, and he spoke very highly of George Irwin many times in my presence.