نتایج جستجو برای: natural material

تعداد نتایج: 826167  

Journal: :Strojnícky casopis – Journal of Mechanical Engineering 2018

2011
S M Sapuan J Y Kho Ahmed Ali

Material selection is an important process in the product development. To avoid inappropriate decision of materials, analytic hierarchy process (AHP) can be one of the useful tools for determining the most suitable material for automotive dashboard panel. In this project, database of material properties of natural fiber composites has been organized systematically. The material properties of na...

Journal: :mechanics of advanced composite structures‎ 2014
korosh khorshidi ali bakhsheshy

this study investigates natural frequency analysis of an fg composite rectangular plate partially contacting with a bounded fluid. the material properties are assumed to be varying continuously through the thickness direction according to a simple power law distribution in terms of volume fraction of material constituents. wet dynamic transverse displacements of the plate are approximated by a ...

Journal: :iranian journal of nuclear medicine 1994
roghayeh bagherzadeh akbari

this study aims to give data concrning phantom material made in iran i'rom a natural rubber which is used for obtaining calibration data for patient dose measurements in nuclear medicine applications of radionuclides for therapy and diagnosis.is showed to be a tissue equivalent material cheap (25000 rials the material itself and 35000 rials the process of casting and moulding etc.), easily avai...

M Mohammadimehr, M Mohandes

In this article, the effect of size-dependent on the buckling and vibration analysis of functionally graded (FG) double-layer boron nitride plate based on classical plate theory (CPT) under electro-thermo-mechanical loadings which is surrounded by elastic foundation is examined. This subject is developed using modified couple stress theory. Using Hamilton's principle, the governing equations of...

This study investigates natural frequency analysis of an FG composite rectangular plate partially contacting with a bounded fluid. The material properties are assumed to be varying continuously through the thickness direction according to a simple power law distribution in terms of volume fraction of material constituents. Wet dynamic transverse displacements of the plate are approximated by a ...

Journal: :journal of applied and computational mechanics 0
saeed talebi department of mechanical engineering, university of isfahan hamed uosofvand department of mechanical engineering, university of kashan, kashan, iran alireza ariaei department of mechanical engineering, faculty of engineering, university of isfahan, isfahan, iran

this study introduces the differential transform method (dtm) to analyse the free vibration response of a rotating, closed section, composite, timoshenko beam which features material coupling between flapwise bending and torsional vibrations due to ply orientation. the governing differential equations of motion are derived using hamilton’s principle and solved by applying dtm. the natural frequ...

Roghayeh Bagherzadeh Akbari

This study aims to give data concrning phantom material made in Iran i'rom a natural rubber which is used for obtaining calibration data for patient dose measurements in nuclear medicine applications of radionuclides for therapy and diagnosis. Is showed to be a tissue equivalent material cheap (25000 Rials the material itself and 35000 Rials the process of casting and moulding etc.), easi...

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