Search Results - "Farrahi, G H"

A new energy-based isothermal and thermo-mechanical fatigue lifetime prediction model for aluminium-silicon-magnesium alloy by Farrahi, G. H., Azadi, M., Winter, G., Eichlseder, W.

“…ABSTRACT In this paper, a new fatigue lifetime prediction model is presented for the aluminium–silicon–magnesium alloy, A356.0. This model is based on the…”
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An investigation into the effect of various surface treatments on fatigue life of a tool steel by Farrahi, G.H., Ghadbeigi, H.

“…The effects of nitriding, nitrocarburizing and shot peening on fatigue behavior of AISI D3 cold work tool steel were investigated. Five batches of fatigue…”
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Reconstruction of residual stresses in autofrettaged thick-walled tubes from limited measurements by Farrahi, G.H., Faghidian, S.A., Smith, D.J.

“…An analytical method for reconstructing residual stresses within axisymmetric cylinders is presented. The method uses the stress equilibrium and boundary…”
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Finite element analysis of shot-peening effect on fretting fatigue parameters by H-Gangaraj, S.M., Alvandi-Tabrizi, Y., Farrahi, G.H., Majzoobi, G.H., Ghadbeigi, H.

“…Shot peening is widely used to improve the fretting fatigue strength of critical surfaces. Fretting fatigue occurs in contacting parts that are subjected to…”
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Modification of fretting fatigue behavior of AL7075–T6 alloy by the application of titanium coating using IBED technique and shot peening by Majzoobi, G.H., Nemati, J., Novin Rooz, A.J., Farrahi, G.H.

“…In this work, improvement in fretting fatigue life of AL7075–T6 has been investigated by titanium surface coating using ion-beam-enhanced deposition (IBED)…”
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Residual stresses in autofrettaged vessel made of functionally graded material by Haghpanah Jahromi, B., Farrahi, G.H., Maleki, M., Nayeb-Hashemi, H., Vaziri, A.

“…We used an extension of the Variable Material Property method for materials with varying elastic and plastic properties to evaluate the residual stresses in an…”
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Thermo-mechanical stress analysis of thermal barrier coating system considering thickness and roughness effects by Moridi, A., Azadi, M., Farrahi, G.H.

“…Cast aluminium–silicon alloy, A356.0, is widely used in automotive and aerospace industries because of its outstanding mechanical, physical, and casting…”
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Residual stress analysis of autofrettaged thick-walled spherical pressure vessel by Maleki, M., Farrahi, G.H., Haghpanah Jahromi, B., Hosseinian, E.

“…In this study, residual stress distributions in autofrettaged homogenous spherical pressure vessels subjected to different autofrettage pressures are…”
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Multiscale modeling of nanoindentation and nanoscratching by generalized particle method by Chamani, M, Farrahi, G H

“…Most concurrent multiscale methods that expand atomistic region by continuum domain suffer from inconsistent material constitutive properties, which affect the…”
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Residual stress analyses of re-autofrettaged thick-walled tubes by Farrahi, G.H., Voyiadjis, George Z., Hoseini, S.H., Hosseinian, E.

“…In this paper the effect of the re-autofrettage process on the residual stress distribution at the wall of a thick-walled tube is considered. For accurate…”
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A comprehensive experimental and numerical study on redistribution of residual stresses by shot peening by Mahmoudi, A.H., Ghasemi, A., Farrahi, G.H., Sherafatnia, K.

“…Shot peening is one of the most effective surface strengthening treatment technologies in which compressive residual stresses are induced beneath the specimen…”
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Nonlinear free vibration of conservative oscillators with inertia and static type cubic nonlinearities using homotopy analysis method by Hoseini, S.H., Pirbodaghi, T., Asghari, M., Farrahi, G.H., Ahmadian, M.T.

“…In this study, an accurate analytical solution for the nonlinear free vibration of a conservative oscillator with inertia and static type cubic nonlinearities…”
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Experimental evaluation of the effect of thread pitch on fatigue life of bolts by Majzoobi, G.H., Farrahi, G.H., Habibi, N.

“…The effect of thread pitch (coarse and fine threads) on fatigue life of ISO bolts within the range of 10≤ D≤24 mm ( D=outside diameter) and American Unified…”
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An approach to relate shot peening finite element simulation to the actual coverage by Gangaraj, S.M.H., Guagliano, M., Farrahi, G.H.

“…Coverage is one of the most important parameters which is always used in practice to characterize a shot peening process. At the same time however, it is the…”
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Failure Analysis of a Gas Turbine Compressor in a Thermal Power Plant by EHSAN MASOUMI KHALIL ABAD, FARRAHI, G. H, MAHDI MASOUMI KHALIL ABAD, AMIR AHMAD ZARE, PARSA, Siavash

“…This study presents the results of failure analysis of a 28 MW gas turbine at the Rei electrical power plant. The gas turbine failed during the shutdown period…”
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Reliability assessment of cracked pipes subjected to creep-fatigue loading by Vojdani, A., Farrahi, G.H.

“…•The contribution of creep and fatigue to the total crack growth has been evaluated in deterministic calculations.•Creep-fatigue reliability analysis have been…”
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Effect of microstructure on crack behavior in nanocrystalline nickel using molecular dynamics simulation by Moradi, M., Farrahi, G.H., Chamani, M.

“…•Concurrent study of grain boundary volume and grain size effect on the initial slope.•The trend of critical stress intensity factor changes at around grain…”
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A finite element simulation and an experimental study of autofrettage for strain hardened thick-walled cylinders by Majzoobi, G.H, Farrahi, G.H, Mahmoudi, A.H

“…The effect of the autofrettage process on high pressure cylinders has been investigated. Both numerical and experimental techniques have been used for the…”
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Molecular dynamics simulation of nanoindentation of nanocrystalline Al/Ni multilayers by Chamani, M., Farrahi, G.H., Movahhedy, M.R.

“…[Display omitted] •Study of MD simulation of columnar and non columnar nanocrystalline Al substrate.•Concurrent study of grain size and layer number in…”
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Experimental evaluation of the effect of residual stress field on crack growth behaviour in C(T) specimen by Farrahi, G.H., Majzoobi, G.H., Hosseinzadeh, F., Harati, S.M.

“…The effects of the residual stress field resulting from shot peening and the indentation technique were investigated in relation to fatigue crack closure and…”
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