Results 101 to 110 of about 1,628,342 (332)

Shear friction capacity of recycled concretes

open access: yesMateriales de Construcción, 2010
The aim of this research was to determine the behavior of recycled concrete in response to the phenomenon of shear transfer. To perform it, a conventional control concrete and a concrete with 50% recycled coarse aggregate were designed. An additional goal was to shed light on how this behavior is modified with a pozzolanic addition, silica fume ...
González Fonteboa, B.   +3 more
openaire   +4 more sources

Ceramic Particle‐Reinforced Medium‐Entropy Alloys With Outstanding Mechanical Properties Prepared by Novel Micro‐LPBF

open access: yesAdvanced Functional Materials, EarlyView.
An innovative medium entropy alloy (MEA) composite material was fabricated via micro laser powder bed fusion (μ‐LPBF) with appropriate nano‐ceramic particles doping and exhibited markedly improved overall performance, including synergistically enhanced strength and ductility, increased hardness and compressive strength, improved wear resistance and ...
Zhonglin Shen, Mingwang Fu
wiley   +1 more source

Heat transfer in turbulent shear flow [PDF]

open access: yes, 1956
The problems of heat transfer in turbulent shear flow along a smooth wall are discussed from the point of view of von Karman's well-known 1939 paper on the analogy between fluid friction and heat transfer. Methods for extending the analysis to higher
Rannie, W. D.
core   +1 more source

Effect of Welding Parameters on Microstructure and Mechanical Properties of Cast Fe-40Al Alloy

open access: yesMetals, 2016
Friction welding of cast Fe-40Al alloy was carried out at 1000 rmp for various friction times, friction pressures, and forging pressures. The microstructures of the interface of welded samples were analyzed by optical and scanning electron microscopy ...
Osman Torun
doaj   +1 more source

Meta‐Rod Mechanical Metamaterials With Programmable Reconfiguration

open access: yesAdvanced Functional Materials, EarlyView.
Existing mechanical metamaterials achieve programmable large deformations in planar square or cubic configurations, restricted by required complex boundary conditions. This research proposes a 1D metamaterial, Meta‐rod, with linear, bending, twisting, area, and volume deformation modes.
Atharva Pande, Lyes Kadem, Hang Xu
wiley   +1 more source

Experimental Study of Interface Shear Transfer of Steel Fiber Reinforced Concrete Members

open access: yesInternational Journal of Concrete Structures and Materials
This study aimed to evaluate the shear friction strength mechanism of monolithically and separately cast concrete members using steel fiber reinforced concrete (SFRC).
Daun Jeong   +3 more
doaj   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

open access: yesAdvanced Functional Materials, EarlyView.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Thermodynamics and kinetics of boundary friction [PDF]

open access: yes, 2011
A deterministic theory describing the behavior of an ultrathin lubricant film between two atomically-smooth solid surfaces is proposed. For the description of lubricant state the parameter of excess volume arising due to chaotization of solid medium ...
Khomenko, Oleksii Vitaliiovych   +6 more
core  

The dependence of the dry friction threshold on rupture dynamics

open access: yes, 2011
The static friction coefficient between two materials is considered to be a material constant. We present experiments demonstrating that the ratio of shear to normal force needed to move contacting blocks can, instead, vary systematically with ...
Ben-David, Oded, Fineberg, Jay
core   +1 more source

Increased shear strength in frictional soil

open access: yes, 2022
Limit equilibrium analysis (LEA) of slope stability is the main concept in evaluating existing structures and for designing of new ones. When doing a LEA cohesion c’ and friction angle φ’ are conventionally used for strength determination. Since LEA does not properly take consideration of factors contributing to increased shear strength in frictional ...
Jia, Qi, Laue, Jan
openaire   +2 more sources

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