论文部分内容阅读
一、在归纳我们第一阶段的试验结果后发现:常用航空铝合金方板的压缩弹性模量大多在6000～9000kg/mm~2范围内;压缩条件屈服强度大多在20～60 kg/mm~2范围内;与压缩条件屈服强度对应的压缩应变大多在4200～8500 με范围内。同时发现,不同工厂或不同炉批的同一牌号板材,其性能也有差别。当测定某种材料时,事前无法知道确切的性能数值。为使每片试样有效,保证试验后能得到工程所需的数据,对于不会脆性压溃的材料宜用应变控制加载。根据我们的经验与习惯,一般压缩到8500με然后卸载。倘若不够,可以酌情加大。
First, after summarizing the test results of our first phase, we found that the compressive elastic modulus of common aviation aluminum alloy square board is mostly in the range of 6000-9000kg / mm ~ 2; the compressive yield strength is mostly in the range of 20-60kg / mm ~ 2; the compressive strain corresponding to the compressive yield strength is mostly in the range of 4200-8500 με. Also found that different factories or different furnace batch of the same plate, its performance is also different. When measuring a material, the exact performance value can not be known in advance. In order to make each sample effective, to ensure that the test can get the required data engineering, for brittle crush material should strain control loading. According to our experience and habits, the general compression to 8500με then uninstall. If not enough, you can increase as appropriate.