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56 articles for “radius”
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Research ArticleOpen accessIn the abstractMultiaxial Fatigue Strength to Notched specimens made of 40CrMoV13.9Abedin Gagani, Raffaella Aversa, Relly Victoria V. Petrescu et al.Fatigue is a process (succession of mechanisms) which under the action of time-varying strains or deformations modifies the local properties of a material. These can lead to the formation of cracks and eventual rupture of the structure. Fatigue is in particular characterized by an extent of variation in stress which may be well below the yield strength of the material. … …American Journal of Engineering and Applied Sciences, Vol. 9, Issue 4 · 31 Dec 2016 · 8,200 accessesView PDFCite
Research ArticleOpen accessIn the abstractLaser-Induced Breakdown and Detonation in Particle-Laden SystemsKonstantin VolkovSimulation of the interaction of a laser pulse with gas-droplet and gas-particle mixtures plays an important role in environmental and engineering applications. The injection of liquid droplets or metal particle causes optical breakdown on the individual droplet or particle and leads to a drop of the detonation minimum pulse energy of the mixture. Mathematical models of various stages of the … …American Journal of Applied Sciences, Vol. 12, Issue 1 · 4 Mar 2015 · 7,348 accessesView PDFCite
Research ArticleOpen accessIn the abstractDetermination of Scattering Parameters of a New Copolymer by Using a Laser Scattering MethodRiyad GhazyProblem statement: In present work a poly (4 vinylphenol-co-2 hydroxethyl methacrylate) polymer, (PVPh-HEM), was selected, as a new copolymer, to study the phenomena of Optical Laser Light Scattering (OLLS). Approach: A poly (4 vinylphenol-co-2 hydroxethyl methacrylate) was investigated for its importance in the highly industrial applications in different branches. This polymer was solved in two different solvents like as Methanol … …American Journal of Applied Sciences, Vol. 8, Issue 6 · 13 Jun 2011 · 6,923 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Impact Level and Fruit Properties on Golden Delicious Apple BruisingArzhang Javadi, Ebrahim Ahmadi, Mohammad Hossein Abbaspour-Fard et al.Problem Statement: Bruise damage is a major cause of fruit quality loss. Bruises occur under dynamic and static loading when stress induced in the fruit exceeds the failure stress of the fruit tissue. Statistical bruise estimation models were constructed to calculate Golden Delicious apple bruise volume with respect to fruit properties. Approach: The regression models were built based upon impact … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 2 · 30 Jun 2010 · 9,259 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Aerosol Particle Size at High Polluted Region in the World Using Direct Solar Radiation Measurements: Helwan as a Case RegionU. Ali RahomaProblem statement: Particle counting and sizing of atmospheric aerosols by electro-optical methods are complex and absolute interpretation of measurements is difficult, so, the scattered light varies in a complicated manner with the system of optics as well as with the size and physical characteristics of particles. Approach: The estimation of the air aerosol number concentration variation was carried out in … …American Journal of Environmental Sciences, Vol. 6, Issue 2 · 8 May 2010 · 6,670 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnisotropy Influence of Cubic Solid on Dynamic Hertzian Contact Stiffness for a Vibrating Rigid IndenterJiayong TianProblem statement: Resonance-type microscopies have been widely used to evaluate the nanoscaled or microscaled surface elastic properties of materials by the resonance-frequency shifts of an oscillator, which contacts the surface of materials by a spherical tip. Approach: The tip-specimen contact is modeled to be a spring support, whose stiffness is given by the traditional Hertzian contact theory. However, because of … …American Journal of Engineering and Applied Sciences, Vol. 3, Issue 1 · 31 Mar 2010 · 7,711 accessesView PDFCite
Research ArticleOpen accessIn the abstractQuantum Hadamard Gate Implementation Using Planar Lightwave Circuit and Photonic Crystal StructuresShamsolah Salemian, Shahram MohammadnejadAn all optical method has been proposed for quantum Hadamard gate implementation. This quantum gate was realized by using Y-junction beam splitter. Normal modes in waveguides have been used as quantum bit. This all optical gate can be used in quantum computation and communication. The proposed Hadamard gate has potential of being more compact and easily realized compared to other … …American Journal of Applied Sciences, Vol. 5, Issue 9 · 30 Sep 2008 · 7,921 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnalysis of the Parameters Affecting Warping In Radial Forging ProcessF. Djavanroodi, M. Sabeghi, K. AbriniaRadial forging is a process in which one or two punches move axially causing a radial flow into a die cavity by means of which a flange is formed. During forging, warping, in which the lower face of thin flange rises from the die face may occur. To better understand the effect of parameters affecting the warping in radial forging … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 6,541 accessesView PDFCite
Research ArticleOpen accessIn the abstractTriton for Nuclear FusionRaffaella Aversa, Relly Victoria Petrescu, Antonio Apicella et al.In the nuclear fusion process that is permanently produced in the stars (suns) there is a thermonuclear reaction that uses as the main raw material the very first isotope of hydrogen, namely the Protium. This process is possible due to the huge temperatures and the unimaginably high pressures existing inside a star. At very high temperatures and pressures, matter begins … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 4 · 16 Dec 2017 · 8,917 accessesView PDFCite
Research ArticleOpen accessIn the abstractEvaluation of Geometric and Environmental Parameters in Reuse of Deactivated Railway for LRV ImplantationIsabelle S. Sales, Gislaine Santos, Jordan H. Souza, Ana StephanA portion of the origin-destination matrix of freight transport in Brazil corresponds to the railway mode; however, a small part of the matrix of passengers is represented by the modalities that use railway lines. The country has an extensive railway network, mainly in the southeast, but some parts are deactivated. This article aims to present a study of the possibility … …American Journal of Engineering and Applied Sciences, Vol. 10, Issue 4 · 31 Oct 2017 · 8,334 accessesView PDFCite