Results 81 to 90 of about 137,347 (342)

Uniaxial Dynamic Tensile Properties of Hydraulic Concrete after Freezing-Thawing Cycles

open access: yesElectronic Journal of Structural Engineering, 2018
In this paper, freeze-thaw cycles tests of 0, 25, 50, 75 and 100 times for large aggregate concrete were carried out and uniaxial dynamic tensile tests under the strain rates of 10-5/s, 10-4/s, 10-3/s and 10-2/s were also performed.
Haitao Wang, Haoyu Sun, Xinxin Zhuang
doaj   +1 more source

Properties of novel CVD graphite fibers and their bromine intercalation compounds [PDF]

open access: yes
A hybrid fiber with a PAN core surrounded by a vapor grown carbon fiber (VGCF) sheath was fabricated using a proprietary process. The density, ultimate tensile strength, Young's modulus, and resistivity of pristine and bromine intercalated fibers made by
Gaier, James R.   +3 more
core   +1 more source

Manufacturing of Composites by Pressure Infiltration, Structure and Mechanical Properties [PDF]

open access: yes, 2008
This paper presents the possibility of composite block production by using pressure infiltration technology. This method uses the pressure of an inert gas (usually argon or nitrogen) to force the melted matrix material to infiltrate the reinforcing ...
Dobránszky, János   +2 more
core  

Electricity Generation From Ambient Water Evaporation in the Absence of Sunlight via PVA‐Based Porous Hydrogels

open access: yesAdvanced Functional Materials, EarlyView.
In this article, a water‐evaporation driven energy harvester is devised that works even in the absence of sunlight. This is achieved by combining PVA hydrogel with thermoelectrics (TEG) to directly capture energy from water evaporation. Under mild conditions (RH 40%, T of 26 °C, and 2.8 m s−1 wind), 1.71 mW (1.02 W m−2) power can be generated, >3 fold ...
Zichen Gong, Ady Suwardi, Jing Cao
wiley   +1 more source

Modification of silicon carbide fibers for use in SiC/Ti composites [PDF]

open access: yes
The degradation of silicon carbide fibers during exposure to conditions typical of composite fabrication was investigated. The tensile strength of pristine fibers and fibers sputtered with thin metal coatings were determined before and after treatment at
Brewer, W. D.   +3 more
core   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

open access: yesAdvanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana   +2 more
wiley   +1 more source

Stable, Easy‐to‐Handle, Fully Autologous Electrospun Polymer‐Peptide Skin Equivalent for Severe Burn Injuries

open access: yesAdvanced Functional Materials, EarlyView.
A bioengineered skin equivalent composed of electrospun poly(ε‐caprolactone) (PCL) and the bioactive peptide Fmoc‐FRGD is developed for severe burn treatment. This scaffold promotes full‐thickness skin regeneration by supporting cellular adhesion and integration. In‐vitro and in‐vivo studies show enhanced mechanical stability, accelerated wound closure,
Dana Cohen‐Gerassi   +11 more
wiley   +1 more source

Mechanical properties of Ti-6Al-4V specimens produced by shaped metal deposition

open access: yesScience and Technology of Advanced Materials, 2009
Shaped metal deposition is a novel technique to build near net-shape components layer by layer by tungsten inert gas welding. Especially for complex shapes and small quantities, this technique can significantly lower the production cost of components by ...
Bernd Baufeld and Omer van der Biest
doaj  

Structure, Composition, and Mechanical Properties of Australian Orthodontic Wires [PDF]

open access: yes, 2009
Objective: To investigate the surface morphology, structure, elemental composition, and key mechanical properties of various sizes and tempers of Australian wires.
Berzins, David W.   +5 more
core   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

open access: yesAdvanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong   +3 more
wiley   +1 more source

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