Sharif Digital Repository

Monitoring of crack healing in geopolymer concrete using a nonlinear ultrasound approach in phase-space domain

Author

Rahmati, M.

Publisher

Elsevier B.V,

Pub. Year

2023

Subjects

Concrete health monitoring. / Crack healing. / Fractal dimension. / Phase-space. / Ultrasonic test.

Effect of predeformation and heat treatment conditions in the SIMA process on microstructural and mechanical properties of A319 aluminum alloy

Author

Arami, H.

Pub. Year

2009

Subjects

Mechanical properties. / Metallography. / Alumina. / Aluminum alloys. / Cerium alloys. / Dendrites (metallography) / Grain growth. / Heat treating furnaces. / Heat treatment. / Light metals. / Mechanical properties. / Metallic compounds. / Metallurgy. / Microstructure. / Smelting. / Tensile strength. / Globular structures. / Heat treatment conditions. / Holding times. / Induced melts. / Metals and alloys. / Microstructural. / Semi solids. / Shape factors. / Sima processes. / Alloys.

ALR detector for coherent radar detection of rapid fluctuating signals

Author

Modarres Hashemi, M.

Publisher

Institute of Electronics, Information and Communication, Engineers, IEICE,

Pub. Year

2000

Subjects

Alr detector. / Coherent detection. / Glr detector. / Rapid fluctuating signals.

Coronary artery lipid accumulation prevention through vibrating piezo electric nano plates embedded in smart stent

Author

Ahmadi Arpanahi, R.

Publisher

Elsevier Ltd,

Pub. Year

2023

Subjects

Fluid-solid interaction. / Nonlocal elasticity. / Piezo electric materials. / Smart stents.

Empirical comparison of sliding friction and wear behaviors of gray and white cast iron

Author

Hashemi, M.

Pub. Year

2010

Subjects

Coefficient of frictions. / Empirical comparison. / Graphite flakes. / Gray cast iron. / Lower average. / Lubricant properties. / Optical microscopes. / Pin-on-disk wear test. / Sliding friction. / Wear test. / White cast irons. / Worn surface. / Friction. / Graphite. / Iron. / Surfaces. / Systems analysis. / Tribology. / Cast iron.

Investigation of the small-scale effects on the three-dimensional flexural vibration characteristics of a basic model for micro-engines

Author

Hashemi, M.

Publisher

Springer-Verlag Wien,

Pub. Year

2015

Subjects

Differential equations. / Engines. / Equations of motion. / Natural frequencies. / Flexural vibrations. / Galerkin approach. / Governing equations of motion. / Modified couple stress theories. / Parametric study. / Rotational speed. / Small scale effects. / Threshold of instability. / Ordinary differential equations.

Analytical study of three-dimensional flexural vibration of micro-rotating shafts with eccentricity utilizing the strain gradient theory

Author

Hashemi, M.

Publisher

Springer Netherlands,

Pub. Year

2016

Subjects

Micro-spinning rayleigh beam. / Beams and girders. / Continuum mechanics. / Equations of motion. / Galerkin methods. / Free and forced vibrations. / Non-classical continuum theories. / Rayleigh beams. / Small-scale structures. / Strain gradient theory. / Vibration analysis.

Size-dependent vibrational behavior of a Jeffcott model for micro-rotor systems

Author

Hashemi, M.

Publisher

Korean Society of Mechanical Engineers

Pub. Year

2016

Subjects

Jeffcott micro-rotor system. / Analytical expressions. / Micro rotors. / Rotor dynamic. / Second-order differential equation. / Small scale effects. / Small-scale structures. / Strain gradient theory. / Vibrational behavior. / Differential equations.

On the size-dependent flexural vibration characteristics of unbalanced couple stress-based micro-spinning beams

Author

Hashemi, M.

Pub. Year

2017

Subjects

Micro-spinning beam. / Modified couple stress theory. / Nonclassical continuum theories. / Continuum mechanics. / Equations of motion. / Galerkin methods. / Free and forced vibrations. / Modified couple stress theories. / Non-classical continuum theories. / Small-scale structures. / Spinning beam. / Vibration analysis.

Morphology development and mechanical properties of unsaturated polyester resin containing nanodiamonds

Author

Hashemi, M.

Pub. Year

2017

Subjects

Unsaturated polymers. / Nanodiamond. / Curing. / Dynamic mechanical analysis. / Mechanical properties. / Morphology. / Nanodiamonds. / Polymer blends. / Shear viscosity. / Solvents. / Aggregates. / Field emission SEM. / Fourier transform infra reds. / Interfacial interaction. / Morphology development. / Rheological measurements. / Uniform dispersions. / Unsaturated polyester. / Unsaturated polyester resin. / Polyester resins.

Analysis of H-plane waveguide discontinuities using hybrid multimode contour integral and mode matching techniques

Author

Hashemi, A.

Pub. Year

2007

Subjects

Photonics. / GSM. / H-plane discontinuity. / Mode matching. / Multimode contour integral. / Rectangular waveguide. / Integral equations.

Biometric identification through hand geometry

Author

Hashemi, J.

Publisher

IEEE Computer Society,

Pub. Year

2005

Subjects

Computer simulation. / Feature extraction. / Image processing. / Multilayer neural networks. / Pattern recognition. / Radial basis function networks. / Scanning. / Gaussian mixture modeling (GMM) / Hand geometry. / K-Nearest Neighbor (k-NN) / Person identification. / Biometrics.