Susceptibility to intergranular corrosion of welded stainless steels

Demirel, Emre


Susceptibility of mid-rise and high-rise steel moment resisting frame buildings to the nonlinear behavior of beam-column connections
Bayraktar, Murat; Sarıtaş, Afşin; Department of Civil Engineering (2017)
Moment resistinting steel frames provide significant energy dissipation capacity in the event of a major seismic excitation. In order to ensure this, one of the most critical regions to pay attention is the beam-column connections, where their behavior is greatly simplified and idealized for the purpose of design in practice. In this thesis, the variables inherent in steel connections are taken into account through a parametric study by considering both static push-over analysis and nonlinear time history a...
Adhesion of an HTPB-IPDI-based liner elastomer to composite matrix and metal case
Haska, SB; Bayramli, E; Pekel, F; Özkar, Saim (1997-06-20)
Adhesional characteristics of an elastomeric liner composition toward a highly filled composite matrix and metal case were investigated. The system is composed of an excess isocyanate functionality in the elastomer compared to an excess hydroxyl functionality in the composite matrix. Both phases essentially contain the same binder (HTPB) and curing agent (IPDI). A bifunctional aziridine (MAPO) is used as a bond (adhesion) promoter. The effects of the R value, triol/diol ratio, and MAPO concentration on the ...
Optimum Properties of Seismic Isolation Systems in Highway Bridges to Minimize Isolator Displacements or Substructure Forces
Dicleli, Murat (null; 2019-07-06)
In this study, closed form equations as functions of the isolator, bridge and ground motion properties are formulated to calculate the optimum characteristic strength, Qd and post-elastic stiffness, kd, of the isolator to minimize the maximum isolator displacement (MID) and force (MIF) for seismic isolated bridges (SIBs). For this purpose, first, sensitivity analyses are conducted to identify the bridge, isolator and ground motion parameters that affect the optimum values of Qd and kd. Next, for the identif...
Viscoelastic characteristics of chain extended/branched and linear polyethylene terephthalate resins
Yılmazer, Ülkü; Xanthos, M; Bayram, Göknur; Tan, V (Wiley, 2000-03-01)
Two chemically modified chain extended/branched polyethylene terephthalate (PET) resins and one unmodified resin, considered to be linear, were characterized in terms of their melt flow, die swell, and viscoelastic properties. The three resins had reportedly similar nominal intrinsic viscosities but exhibited different viscoelastic behavior. The modified resins had lower melt flow index, higher die swell, higher complex viscosity and higher storage modulus than the unmodified one. The Cole-Cole plots of the...
PARK, JONGEE; Öztürk, Abdullah (World Scientific Pub Co Pte Lt, 2013-02-01)
Glass-ceramics containing only apatite and wollastonite crystals were produced in the system MgO-CaO-SiO2-P2O5-F by the melt casting process. The bioactivity of the glass-ceramics was determined by immersing the glass-ceramics in a simulated body fluid (SBF) and by assessing the resulting apatite formation on the free surface after various immersion durations. A 12-mu m-thick apatite layer formed on the surface of the glass-ceramic containing only apatite crystals after 20 days immersion in SBF. However, th...
Citation Formats
E. Demirel, “Susceptibility to intergranular corrosion of welded stainless steels,” Middle East Technical University, 2001.