نتایج جستجو برای: Sound velocity

تعداد نتایج: 241826  

Journal: :international journal of iron & steel society of iran 2010
p. behjati a. najafizadeh h. vahid dastjerdi m. araghchi r. mahdavi

in the present work, the influence of aging temperature on mechanical properties and sound velocity of maraging steel m350 was investigated. for this purpose, first, samples were solution annealed at 825◦c for 2 hours and then age hardened at 510◦c-600◦c for 3 hours. hardness, tensile and impact tests were used for determining mechanical properties and longitudinal ultrasonic velocity was used ...

A. Najafizadeh, H. Vahid dastjerdi M. Araghchi P. Behjati, R. Mahdavi

In the present work, the influence of aging temperature on mechanical properties and sound velocity of Maraging steel M350 was investigated. For this purpose, first, samples were solution annealed at 825◦C for 2 hours and then age hardened at 510◦C-600◦C for 3 hours. Hardness, tensile and impact tests were used for determining mechanical properties and longitudinal ultrasonic velocity was used ...

Journal: :iranian journal of astronomy and astrophysics 2014
jamshid ghanbari arezoo tajmohammadi

in this work we solve the set of hydrodynamical equations for accretion disks in the spherical coordinates (r,θ,ϕ) to obtain the explicit structure along θ direction. we study a two-dimensional advective accretion disc in the presence of thermal conduction. we find self-similar solutions for an axisymmetric, rotating, steady, viscous-resistive disk. we show that the global structure of an advec...

Journal: :Physical Review (Series I) 1905

Arezoo Tajmohammadi Jamshid Ghanbari,

In this work we solve the set of hydrodynamical equations for accretion disks in the spherical coordinates (r,θ,ϕ) to obtain the explicit structure along θ direction. We study a two-dimensional advective accretion disc in the presence of thermal conduction. We find self-similar solutions for an axisymmetric, rotating, steady, viscous-resistive disk. We show that the global structure of an advec...

Journal: :The Journal of the Acoustical Society of America 1956

Journal: :School Science and Mathematics 1908

Journal: :The Journal of the Acoustical Society of America 1961

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