Results 41 to 50 of about 9,588 (274)

Finite Element Modeling of GFRP-Reinforced Concrete Interior Slab-Column Connections Subjected to Moment Transfer

open access: yesFibers, 2015
A finite element model (FEM) was constructed using specialized three-dimensional (3D) software to investigate the punching shear behavior of interior slab-column connections subjected to a moment-to-shear ratio of 0.15 m.
Ahmed Gouda, Ehab El-Salakawy
doaj   +1 more source

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

open access: yesAdvanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel   +3 more
wiley   +1 more source

Behavior of Slab-Column Connections of Existing Flat-Plate Structures [PDF]

open access: yes, 2008
Experimental results of five large-scale isolated slab-column connections subjected to three types of loading histories are presented. The subassemblies represented typical flat-plate construction designed prior to the 1980s that had low slab ...
Bayrak, Oguzhan   +4 more
core   +1 more source

Slab thickness-shear reinforcement interaction on shear strength of interior slab-column connections

open access: yesJournal of Engineering and Applied Science
The effects of slab thickness and punching shear reinforcement ratio on the individual contributions of concrete and reinforcement on punching shear strength of interior slab-column connections are theoretically investigated.
Osman M. Ramadan   +2 more
doaj   +1 more source

Punching resistance of internal slab-column connections with double-headed shear studs

open access: yesRevista IBRACON de Estruturas e Materiais
Punching shear is a brittle failure mode that may occur in slab-column connections, which may be prevented by using shear reinforcement in the slab-column connection.
M. H. Oliveira   +4 more
doaj   +1 more source

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

open access: yesAdvanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su   +13 more
wiley   +1 more source

Punching shear strength of steel fibre reinforced lightweight concrete slabs. [PDF]

open access: yes, 1981
One of the problems in slab-column connections is the punching shear failure at over loads. Such failures are sudden and catastrophic, and are undesirable since they do not allow an overall yield mechanism to ...
Theodorakopoulos, Dimitrios D.
core  

Cation Diffusion‐Mediated Displaced Reaction‐Transformation in Green Steelmaking

open access: yesAdvanced Science, EarlyView.
The removal of O lattice atoms by environmental H2 at the surface of Fe3O4 results in Fe enrichment, driving the inward diffusion of Fe cations into the bulk. Through hopping between unoccupied and initially occupied sites, cation diffusion triggers a spatially displaced reaction‐transformation and drives subsequent dynamic phase transformations and ...
Guangyi Guo   +7 more
wiley   +1 more source

Biomineralization of primary carbonate cements: a new biosignature in the fossil record from the Anisian of Southern Italy

open access: yesLethaia, EarlyView., 2021
Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido   +4 more
wiley   +1 more source

Shear strength of slab-column connections under gravity and cyclic lateral loading [PDF]

open access: yes, 2012
The main objective of this research is to study the shear strengths of reinforced concrete and post-tensioned slab-column connections under gravity and cyclic lateral loading.
Sunendro Aris Sutanto Himawan
core   +1 more source

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