Vibration-Based Detection of Damage due to internal Overpressure in Prestressed Concrete Containment Vessel (PCCV)

  • سال انتشار: 1399
  • محل انتشار: دهمین کنفرانس بین‌المللی آکوستیک و ارتعاشات
  • کد COI اختصاصی: ISAV10_061
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 350
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نویسندگان

Mostafa Iraniparast

M.Sc. Student, Department of Civil Engineering, Amirkabir University of Technology, Tehran, Iran

Ahmad Shokoohfar

Assistant Professor, Department of Civil Engineering, Qazvin Branch, Islamic Azad University, Qazvin, Iran

Alireza Rahai

Professor, Department of Civil Engineering, Amirkabir University of Technology, Tehran, Iran

Mohammad Rahai

Formerly M.Sc. Student, Department of civil engineering, Sharif University of Technology, Tehran, Iran

چکیده

Structural damage detection using incomplete measured response data has emerged as a new research area in civil, mechanical, biomechanical, and aerospace engineering communities in recent years. The purpose of this paper is to present a sensitivity-based finite element model (FEM) updating method in the frequency domain. The transfer function (TF) of a damaged structure is approximated using the measured natural frequencies of the damaged structure and the analytical mode shapes of the intact structure. A general damage case with arbitrary changes in stiffness of all elements has been applied to a prestressed concrete containment vessel (PCCV). Furthermore, the finite element model (FEM) of the NUPEC/NRC 1/4-scale model of a PCCV containment of the Ohi-3 power plant is calibrated using measured dis-placement data. The calibrated model was utilized for the numerical investigation of the pro-posed method. In the numerical cases, a 15% random error is applied to data of damaged structure

کلیدواژه ها

Frequency Response Function; Structural model updating; Damage detection; Experimental test; Scaled PCCV model

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