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核加拿大（CWNC）是一家提供广泛的产品和服务的公司，可支持核电行业，包括对不同组件的地震测试。地震测试经常使用最先进的地震测试表对与安全相关的组件进行。地震表是一种用于摇动结构模型或具有六个自由度的模拟地面运动的组件的设备。模拟的地面摇动应遵循称为所需响应频谱（RRS）的理论响应频谱。但是，在某些情况下，如果未准确模拟此响应，则表无法测量表的实际响应，该响应是由术语提到的，即测试响应频谱（TRS）。如果TRS与RRS显着变化，则应应用反馈控制，以使TRS最多等于RR的两倍。如果在经过测试的情况下无法实现这一点，则会获得过度测试的情况。目前尚不清楚为什么表中存在这个问题。因此，该提案的主要目的是研究地震表的过度测试行为，并开发一种有效的技术，可以实施以减轻这种行为。该项目的结果将增强对核工业中安全性相关和关键组成部分的地震资格的信心。