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

• 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

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.

curtis - wright Nuclear Canada （CWNC）是一家为核电行业提供广泛产品和服务的公司，包括不同组件的地震测试。我们经常使用最先进的地震试验台对安全相关部件进行地震试验。地震台架是一种用于在六自由度范围内模拟大范围地震动的结构模型或构件的设备。模拟的地面震动应遵循称为所需反应谱（RRS）的理论反应谱。然而，在某些情况下，如果没有准确地模拟这种响应，则无法测量表的实际响应，这被称为测试响应谱（TRS）。如果TRS与RRS相差很大，则应应用反馈控制，使TRS最多等于RRS的两倍。如果在测试用例中没有达到这一点，就会出现过度测试的情况。目前还不清楚为什么这个问题存在于表中。因此，本提案的主要目的是研究地震台台的过度测试行为，并开发一种有效的技术来减轻这种行为。该项目的成果将增强人们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。