• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >Pulsed Thermography For Non-destructive Evaluation And Damage Growth Monitoring Of Bonded Repairs
【24h】

Pulsed Thermography For Non-destructive Evaluation And Damage Growth Monitoring Of Bonded Repairs

机译：脉冲热成像技术用于粘结修复的无损评估和损伤增长监测

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

Military and civilian aircraft fleets require effective, robust, quick and reliable means of repairing aircraft structures that have experienced battle, environmental or operational damage (e.g., fatigue and corrosion). Common repair schemes use metallic or composite patches that are either mechanically fastened or adhesively bonded to the area of concern. The advantages of adhesive bonding over mechanical fastening of patch repair include the reduction of stress concentration associated with over-sizing of existing holes or machining of additional holes in the structure and improved aerodynamic profiles. However, the primary disadvantage of an adhesively bonded repair is the difficulty in identifying if the patch is properly bonded to the structure and whether it is still capable of carrying the required loads. Depending on the application, a loss of load-bearing capability of the bonded repair could lead to a reduction in the fatigue life or even a premature catastrophic failure of the structure. In this paper, pulsed thermography, an infrared non-destructive evaluation (NDE) technique, is proposed for the detection of disbond and monitoring of disbond growth in bonded graphite repairs. Correlated results with ultrasonic pulse-echo c-scan inspections and destructive testing show good disbond detection capability with an accuracy similar to that of ultrasonic inspection.
机译：军用和民用飞机机队需要有效，坚固，快速和可靠的手段来维修遭受战役，环境或操作损坏（例如疲劳和腐蚀）的飞机结构。常见的修复方案是使用金属或复合补丁，将其机械固定或粘合到相关区域。粘合剂粘合优于修补物的机械固定的优点包括减少与现有孔的尺寸过大或在结构中加工其他孔相关的应力集中，并改善了空气动力学轮廓。但是，粘合修复的主要缺点是难以识别贴片是否正确粘合到结构上以及是否仍然能够承载所需的载荷。取决于应用，粘结修补物的承载能力的损失可能导致疲劳寿命的降低，甚至导致结构的过早灾难性破坏。在本文中，提出了脉冲热成像技术，一种红外无损评估（NDE）技术，用于检测粘结石墨修复物中的粘连并检测粘连生长。超声脉冲回波c扫描检查和破坏性测试的相关结果显示了良好的脱粘检测能力，其准确性与超声检查的准确性相似。

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