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Mostrando ítems 21-30 de 1623
Effect of internally stored water on creep of high-performance concrete
(AMER CONCRETE INST, 2008)
The effects of internally stored water on long-term deformations of high-performance concrete (HPC) were examined on 130 creep and shrinkage specimens and 750 compressive strength specimens. Creep and shrinkage were monitored ...
Creep behaviour of injection moulded polyamide 6/organoclay nanocomposites by nanoindentation and cantilever-bending
(Elsevier, 2011-04-28)
The creep behaviour of injection moulded PA 6/organoclay nanocomposites was studied by depth-sensing nanoindentation and DMA cantilever-bending. The glass transitions of PA 6 and its nanocomposites were decreased below ...
Characterization of elastic and time-dependent deformations in high performance lightweight concrete by image analysis
(PERGAMON-ELSEVIER SCIENCE LTD, 2009)
Image analysis and strain mapping were used to examine the nature of elastic, creep and shrinkage strains in high performance lightweight concrete (HPLC). The strain maps showed non-uniform deformations related to ...
Young's modulus and creep compliance of GaAs and Ga1-xMnxAs ferromagnetic thin films under thermal stress at varied manganese doping levels
(De Gruyter Open Ltd, 2015-06-01)
Dynamical mechanical analysis yields information about the mechanical properties of a material as a function of deforming factors, such as temperature, oscillating stress and strain amplitudes. GaAs and Mn-doped GaAs at ...
Creep behavior of two Cu-2 vol% TiC alloys obtained by reaction milling and extrusion
(Elsevier, 2013)
The creepbehavioroftwoCu-2vol%TiCalloyspreparedbyreactionmillingandextrusionarepresented.
Creep testswereperformedat773–1123K.Theactivationenergyvaluesbetween109and156kJ/mol
and thestress-exponentvaluesbetween3.1and6.3 ...
Compressive creep behavior of zirconia/nickel oxide composites
(International Committee on Composite Materials, 2017)
Nickel oxide/zirconia composites with different NiO contensts have been fabricated by mechanical mixing of nickel oxide and zirconia powders and sintering at 1500 ºC for 10 h in air. The resulting microstructures have been ...
COMPARISON OF CREEP OF BRAZILIAN SELF COMPACTING CONCRETE WITH DIFFERENT PREDICTION MODELS
(R I L E M Publications, 2009-01-01)
Self compacting concrete (SCC) is a composite that was recently developed in Japan in the early 1990's. In Brazil, the studies with SCC started at the early 2000's. SCC offers several advantages as compared to the ordinary ...
Equivalence between hot tensile and creep testing data for Kanthal A1 alloy
(ESCOLA DE MINAS, 2011)
Hot tensile and creep tests were carried out on Kanthal A1 alloy in the temperature range from 600 to 800 degrees C. Each of these sets of data were analyzed separately according to their own methodologies, but an attempt ...
Short-term creep properties and fracture surface of 18 Ni (300) maraging steel plasma nitrided
(2017-01-01)
Plasma nitriding of a solution annealed and aged 300 grade maraging steel was studied aiming to increase the creep resistance. The surface microhardness reached 1,140 HV, producing 50 μm layer composed of ε-Fe3N and γ'-Fe4N ...
Influence of void content and morphology on the creep behavior on glass/epoxy composites
(2021-06-01)
This study aimed to evaluate the dynamic mechanical properties and the creep behavior of glass/epoxy composites containing different void contents. A 3D reconstruction using X-ray microtomography (MCT) was done to determine ...