A comparative study on the reliability-based risk assessment in project management of coastal structures

Pişkin, Gökhan


A comparative study on Kalman filtering techniques designed for state estimation of industrial AC drive systems
Akin, B; Orguner, Umut; Ersak, A (2004-06-05)
In this paper, two different Kalman Filtering techniques, Unscented Kalman Filter (UKF) and Extended Kalman Filter (EKF) are investigated and compared both experimentally and theoretically. These non-linear, stochastic observers are employed as a state estimation tool in field-oriented control (FOC) of sensorless AC drives in this work. Using the superiorities of Kalman filtering, rotor speed and dq-axis fluxes of an induction motor are estimated only with the sensed stator currents and voltages information...
A comparative study on biodegradation and mechanical properties of pressureless infiltrated Ti/Ti6Al4V-Mg composites
ESEN, ZİYA; Butev, Ezgi; Karakas, M. Serdar (2016-10-01)
The mechanical response and biodegradation behavior of pressureless Mg-infiltrated Ti-Mg and Ti6Al4V-Mg composites were investigated by compression and simulated body fluid immersion tests, respectively. Prior porous preforms were surrounded uniformly with magnesium as a result of infiltration and the resultant composites were free of secondary phases and intermetallics. Although the composites' compressive strengths were superior compared to bone, both displayed elastic moduli similar to that of cortical b...
A Comparative study on nonlinear modeling of structural walls
Dursun, Süleyman Eren; Kurç, Özgür; Sucuoğlu, Haluk; Department of Civil Engineering (2018)
The need for tall buildings increases day by day because of many reasons such as increase in population. Representing the behavior of tall buildings under seismic loads is a complicated problem. Thus, in structural engineering, performance based analysis and design approach is generally used for tall buildings which may require nonlinear analysis of buildings. In such an analysis, however, modeling of structural walls has several challenges especially for the ones with irregular cross sections. Therefore, t...
A comparative study on the nonlinear behavior of chevron and suspended zipper braced steel frames
Özçelik, Ahmet Yiğit; Sarıtaş, Afşin; Department of Civil Engineering (2010)
Chevron braced steel frames require large beams to redistribute the unbalanced vertical forces exerted on the beams after brace buckling. A new frame configuration similar to chevron brace was proposed in literature, where zipper columns were attached between mid-spans of the beams from second to top story. During severe ground motion, the unbalanced vertical forces caused by buckling of lower story braces are in this case redistributed to the upper story braces by these zipper columns. Consequently, all st...
A comparative study on flexural analysis of prestressed concrete beams
Rezazadeh, Mehran; Çıtıpıtıoğlu, Ergin; Department of Civil Engineering (1995)
Citation Formats
G. Pişkin, “A comparative study on the reliability-based risk assessment in project management of coastal structures,” Middle East Technical University, 2000.