• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >A simplified predictive approach to assess the mechanical behavior of pinned hybrid composites aged in salt-fog environment
【24h】

A simplified predictive approach to assess the mechanical behavior of pinned hybrid composites aged in salt-fog environment

机译：一种简化的预测方法，评估盐雾环境中脊状杂交复合材料的力学行为

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

Aim of this paper is to assess the predictive capabilities of a simplified theoretical approach on the failure load of aged pinned hybrid composites. In particular, the mechanical performances of glass-flax hybrid epoxy lam-inates exposed to salt spray fog environment, were used as input data in order to address the analytical model. Preliminarily, the relationship among mechanical performances, failure mechanisms, joint geometry and age-ing time, was evaluated by double-lap joint tests on pinned samples at varying joint geometry and ageing time. The bearing and shear out limit stress of samples aged for 60 days under the salt-fog environment underwent a reduction of about 20% compared to the unaged one. Instead, the net-tension limit stress evidenced a reduction slightly above 10%. Afterward, a simplified theoretical approach, based on failure mechanisms stress limits, was proposed to forecast both joint resistance and failure mechanism occurrence. The composite degradation in a salt-fog spray environment was also taken into account in the model. The results highlight a good reliabil-ity, with an average error of about 6-8% compared to experimenatal results, thus indicating the suitability of the proposed approach to support the long-term design of a specific pinned composite subject to critical aggres-sive environments.
机译：本文的目的是评估简化理论方法的预测能力对老年循环混合复合材料的失效负荷。特别地，将玻璃 - 亚麻杂交环氧树脂液体暴露于盐雾雾环境的机械性能作为输入数据，以解决分析模型。初步，通过在不同的关节几何和老化时间上对固定样品进行双液圈关节测试来评估机械性能，失效机制，关节几何和龄和龄症时间之间的关系。与一张控量相比，在盐雾环境下60天老化60天的样品的轴承和剪切限制应力达到约20％。相反，净张力极限应力证明减少略高于10％。之后，提出了一种基于故障机制应力限制的简化理论方法，以预测接头电阻和失效机制发生。在模型中也考虑了盐雾喷雾环境中的复合降解。结果突出了良好的可靠性型，平均误差约为6-8％，比实验结果相比，这表明所提出的方法支持特定固定复合材料的长期设计的适用性，以危急的聚集体 - 患者环境。

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