Investigation and Mitigation of Over-Testing Behavior in an Industrial Seismic Qualification Table

工业抗震鉴定表中过度测试行为的调查和缓解

基本信息

批准号：
543352-2019
负责人：
Mohany, Atef
金额：
$ 1.82万
依托单位：
University of Ontario Institute of Technology
依托单位国家：
加拿大
项目类别：
Engage Grants Program
财政年份：
2019
资助国家：
加拿大
起止时间：
2019-01-01 至 2020-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680822
关键词：
Investigation Mitigation Over Testing Behavior

项目摘要

Curtiss-Wright Nuclear Canada (CWNC) is a company that offers a wide range of products and services that support the nuclear power industry including the seismic testing of different components. Seismic testing is frequently performed on safety related components using state-of-the-art seismic testing table. The seismic table is an equipment that is used to shake structure models or components with a wide range of simulated ground motion in six degrees of freedom. The simulated ground shaking should follow a theoretical response spectrum termed the Required Response Spectrum (RRS). However, in certain scenarios, if this response is not simulated exactly, the actual response of the table can not be measured, which is referred to by the term, Test Response Spectrum (TRS). If the TRS varies significantly from the RRS, a feedback control should be applied so that the TRS is at most equal to two times the RRS. If this is not achieved in the tested case, an over-testing situation is obtained. It is not clear why this issue exist in the table. Therefore the main objective of this proposal is to investigate the over-testing behavior of the seismic table and develop an effective technique that can be implemented to mitigate this behavior. The outcome of this project will enhance the confidence in seismic qualification of safety related and critical components used in the nuclear industry.

Curtiss-Wright Nuclear Canada (CWNC) 是一家提供支持核电行业的广泛产品和服务的公司，包括不同部件的地震测试。经常使用最先进的地震测试台对安全相关组件进行地震测试。地震台是一种用于震动结构模型或构件的六自由度大范围模拟地震动的设备。模拟地面震动应遵循称为所需响应谱 (RRS) 的理论响应谱。然而，在某些情况下，如果没有准确模拟该响应，则无法测量表的实际响应，这由术语“测试响应谱”(TRS) 来指代。如果 TRS 与 RRS 差异很大，则应应用反馈控制，以便 TRS 至多等于 RRS 的两倍。如果在测试的情况下没有实现这一点，则会出现过度测试的情况。目前尚不清楚为什么表中存在此问题。因此，该提案的主要目标是调查地震台的过度测试行为，并开发一种可以减轻这种行为的有效技术。该项目的成果将增强对核工业中使用的安全相关和关键部件的抗震鉴定的信心。