基于振动测试的海洋平台损伤诊断研究

Vibration-based Damage Diagnosis Research on Offshore Platform

海洋平台结构长期服役在恶劣的环境下,再加上设计或使用的不当,结构容易产生各种形式的损伤,严重的还会导致平台失效.海洋平台损伤检测的方法有很多,采用局部损伤检测技术方法对海洋平台结构进行损伤诊断不可靠.基于振动测试的结构健康监测技术是简单可行又较为准确的全局性损伤诊断方法.本文介绍了基于振动测试的损伤诊断理论方法,包括模态参数直接比较法、模态应变能法及基于概率统计理论的损伤诊断法.

Offshore platform supports a lot of loads in the severe environment, while the poor design and application makes the structure damaged to some extent.. This paper introduces the theoretical research on vibration-based damage diagnosis, including modal parameters direct comparison method, modal strain energy method and damage diagnosis method based on probability and statistics theory.