| 基于风险的海洋结构物无损检测功能的分级 |
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| 引用本文： | 李典庆,张圣坤,唐文勇.基于风险的海洋结构物无损检测功能的分级[J].海洋工程,2004,22(1):80-87. |
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| 作者姓名： | 李典庆 张圣坤 唐文勇 |
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| 作者单位： | 上海交通大学,船舶与海洋工程学院,上海,200030 |
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| 基金项目： | 高等学校博士学科点专项科研基金资助项目(2000024802) |
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| 摘 要： | 提出了基于风险的海洋结构物无损检测功能分级方法，采用检测概率、错误识别概率和裂纹出现概率度量检测功能，并修正了错误识别概率的取值范围。根据风险值对无损检测功能进行了分级，研究了风险值随检测概率、错误识别概率和裂纹出现概率的变化规律，分析了风险值对检测费用、维修费用及失效费用的敏感性。在此基础上，将基于风险的海洋结构物无损检测功能分级方法应用于优化检测策略，用算例证明了文中所提方法的有效性。
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| 关 键 词： | 无损检测 风险 检测概率 错误识别概率 海洋结构物 |
| 文章编号： | 1005-9865(2004)01-0080-08 |
| 修稿时间： | 2003年4月21日 |
Risk based ranking of nondestructive inspection performances for offshore structures |
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| LI Dian-qing,ZHANG Sheng-kun,TANG Wen-yong.Risk based ranking of nondestructive inspection performances for offshore structures[J].Ocean Engineering,2004,22(1):80-87. |
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| Authors: | LI Dian-qing ZHANG Sheng-kun TANG Wen-yong |
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| Abstract: | The traditional experience-based inspection approach incurs high costs or yields unnecessary inspections for offshore structures. To overcome these disadvantages, a risk-based ranking method is proposed to rank nondestructive inspection performances for offshore structures. The three variables of the probability of detection, the false call probability and the probability of presence of a crack are adopted for completely characterizing nondestructive inspection performances. Furthermore, the range of variation for the false call probability is corrected. The values of risk are used to rank nondestructive inspection performances. A numerical example is investigated to obtain the variation laws of the values of risk with the probability of detection, the false call probability and the probability of presence of a crack. Furthermore, the influences of different costs on the value of risk are discussed. The proposed method is then applied to select the optimal inspection strategy. The results indicate that the proposed method is very effective in selecting the optimal inspection strategy. |
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| Keywords: | nondestructive inspection risk probability of detection false call probability offshore structures |
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