深海耐压结构微裂纹损伤识别与定量评估方法
Identification and quantitative evaluation of micro-crack in deep-sea pressure-resistant structures
吴瑜 1张朝骅 1佟佳洋 2刘慧一2
作者信息
- 1. 上海海洋大学上海深渊科学工程技术研究中心,上海 201306
- 2. 洋山港海事局,上海 201308
- 折叠
摘要
深海耐压壳安全研究主要集中在材料性能本构模型和以疲劳寿命预测为目标的结构参数评估模型上,其损伤识别和定量评估方法的研究尚不成熟.本文针对深海耐压结构,基于电磁感应和涡流热效应,探究瞬态温度响应与微裂纹损伤间的关系,以实现耐压壳关键部位微裂纹的量化研究.项目研究成果将弥补耐压壳服役安全性研究中无损伤监测的空白,为深海耐压壳微裂纹损伤识别提供原创方法及理论依据,保障目前在役深海潜水器的作业安全.
Abstract
At present,the safety research of pressure hull mainly focuses on the material performance constitutive mod-el and the structural parameter evaluation model aiming at fatigue life prediction.The research on damage identification and quantitative evaluation methods of pressure hull is not studied yet.Based on electromagnetic induction and eddy current thermal effect,the relationship between transient temperature response and crack damage in deep-sea ballast tanks is re-searched in this paper,especially the micro-crack damage in deep-sea manned submersibles,which is of great concern dur-ing the service of three deep-sea manned submersibles,so as to realize the quantitative study of micro-cracks in key parts of ballast tanks.The research results of this paper will fill the gap of non-damage monitoring in ballast tank service safety re-search,original methods and theoretical basis for deep-sea ballast micro-crack damage identification is provided,and the op-erational safety of deep-sea submersible currently is guaranteed in service.
关键词
深海载人潜水器/耐压结构/微裂纹损伤/瞬态温度响应Key words
deep-sea manned submersible/pressure-resistant structure/micro-crack damage/transient temperature response引用本文复制引用
出版年
2024
NETL
NSTL
万方数据