نتایج جستجو برای: electric modulus

تعداد نتایج: 169237  

2016
Shakti Chauhan Anil Sethy

Dynamic modulus of elasticity was determined in clearwood samples of eight tropical hardwood species using longitudinal vibrations, flexural vibration and ultrasonic transit-time methods. These samples were subsequently subjected to three point static bending test to determine static modulus of elasticity and modulus of rupture. Acoustic velocity and wood density were found to be independent pa...

Journal: :Journal of the Ceramic Association, Japan 1937

In this paper a three-dimensional finite element (FE) model of carbon nanocones (CNCs) is proposed and used for obtaining Young\'s modulus of CNCs. In this model, stretching and bending forces between carbon atoms are simulated using truss elements in ANSYS software. Then the model is subjected to the tension and by obtaining the stiffness of the CNC and using elasticity theory, Young’s modulus...

Polymer-clay nano-composite materials, in which nano-meter thick layers of clay dispersed in polymer matrix, have generally higher mechanical properties than normal polymeric materials. A new three-dimensional unit cell model has been developed for modeling three constituent phases including inclusion, interphase and matrix. The total elastic modulus of nano-composite is evaluated.  Numerical r...

Journal: :American Mathematical Monthly 2022

In 1811, Legendre published an identity between integrals involving the constant k:= sin ⁡π12 that inspired Abel to create his brilliant theory of complex multiplication. Then k reappeared as eccentricity ellipse whose arclength Ramanujan computed explicitly in terms gamma functions with rational arguments. Finally, appeared a consequence three-body choreography along Bernoulli’s lemniscate. We...

Journal: :IOP conference series 2022

Tellurium (Te) doped Bismuth Antimony (BiSb) sample has been prepared in the form of pellet (Bulk) with help a compression method using Pelletizer. Using antimony was used for study dielectric properties through VNA (Vector Network Analysis) high range frequency 200 MHz to 20 GHz. From initial data obtained study, DC conductivity, Dielectric loss, constant, AC and Real & Imaginary Electric ...

Journal: :Journal of composites science 2021

The research aim is to investigate the performance of novel enriched mineral fibres (Filava) in polysiloxane SLIRES H62 resin. Specimens were manufactured using a vacuum bagging process and oven cured at 250 °C. prepared for flexural testing according BS EN ISO 14125:1998 obtain strength, modulus, elongation. mechanical strength was compared similar composites, with determining composite index....

Journal: :ماشین های کشاورزی 0
رمضان میرزایی سعید مینایی محمدهادی خوش تقاضا علی محمد برقعی

the most important quality indicator of fruits is the flesh firmness which is well correlated to their young’s modulus. in this research variation of vibration characteristics (shape modes, natural frequency) of apple due to change of material characteristics (density, young's models, poisson ratio) and apple volume was investigated using finite element simulation. an image processing technique...

2012
Kazuya Tatsumi Yoichi Katsumoto Ryoji Fujiwara Kazuyoshi Nakabe

A microsensor that can continuously measure the deformability of a single red blood cell (RBC) in its microchannels using microelectrodes is described in this paper. The time series of the electric resistance is measured using an AC current vs. voltage method as the RBC passes between counter-electrode-type micro-membrane sensors attached to the bottom wall of the microchannel. The RBC is defor...

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