• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Experimental Mechanics >Effect of Cold Working on Crack Growth from Holes in Fiber Metal Laminates
【24h】

Effect of Cold Working on Crack Growth from Holes in Fiber Metal Laminates

机译：冷加工对纤维层压板中孔的裂纹扩展的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cold expansion has proven to be an effective technique for extending the fatigue life of monolithic materials. Although fiber metal laminate materials show improved fatigue performance compared to their monolithic counterparts, the nucleation and growth of small cracks tends to occur early on in the fatigue life of the material, making acceptance of fiber metal laminates in aerospace more difficult. This work examined whether cold expansion could delay this process in fiber metal laminates and increase the fatigue life of these materials at the same time. The results showed that significant differences existed in the residual strain field between the mandrel exit and entry faces resulting in slower fatigue crack growth on the exit face, which also had higher residual strains in the region surrounding the cold expanded hole. Overall, cold expansion is effective at increasing the fatigue life of fiber metal laminate materials, but is less effective at delaying nucleation and growth of small cracks on the entry face.
机译：事实证明，冷膨胀是延长整体材料疲劳寿命的有效技术。尽管与单片金属复合材料相比，金属纤维层压板的疲劳性能有所改善，但在材料的疲劳寿命中，早期往往会出现小裂纹的形核和长大，这使得在航空航天领域接受纤维金属层压板更加困难。这项工作研究了冷膨胀是否会延迟金属纤维层压板中的此过程并同时延长这些材料的疲劳寿命。结果表明，芯棒出口和入口面之间的残余应变场存在显着差异，导致出口面上的疲劳裂纹扩展较慢，并且在冷扩孔周围区域的残余应变也较高。总的来说，冷膨胀有效地延长了纤维金属层压材料的疲劳寿命，但是在延迟成核和进入面上小裂纹的扩展方面却没有那么有效。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号