Search Results - "A. Mostafapour"

Analysis of leakage in high pressure pipe using acoustic emission method by Mostafapour, A., Davoudi, S.

“…► Modeling of pipe vibration caused by acoustic emission. ► Donnell’s non-linear theory. ► Simulated continuous leak source used in acoustic emission testing…”
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The effect of process parameters on microstructural characteristics of AZ91/SiO2 composite fabricated by FSP by Khayyamin, D., Mostafapour, A., Keshmiri, R.

“…Process parameters are one of the major factors in friction stir processing. Therefore, the effects of these parameters were investigated in fabrication of…”
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Role of hybrid ratio in microstructural, mechanical and sliding wear properties of the Al5083/Graphitep/Al2O3p a surface hybrid nanocomposite fabricated via friction stir processing method by Mostafapour Asl, A., Khandani, S.T.

“…Hybrid ratio of each reinforcement phase in hybrid composite can be defined as proportion of its volume to total reinforcement volume of the composite. The…”
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Acoustic emission source location in plates using wavelet analysis and cross time frequency spectrum by Mostafapour, A., Davoodi, S., Ghareaghaji, M.

“…•Wavelet transform and cross-time frequency spectrum (CTFS) are used to locate AE source.•Using frequency-varying acoustic speed in plate-type structures.•The…”
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Experimental and numerical investigation of the traction-separation law of mode II fracture in single-edge ultrasonic welding in polypropylene composite reinforced by glass fibers by Ahmadi, R., Biglari, H., Mostafapour, A., Khoshravan, M.

“…The use of welded joints in composite structures with reinforced fibers has rapidly increased owing to their advantages in terms of strength-to-weight ratio,…”
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Experimental investigation on the effect of process environment on the mechanical properties of AA5083/Al2O3 nanocomposite fabricated via friction stir processing by Ashjari, M., Mostafapour Asl, A., Rouhi, S.

“…Friction stir processing, a lately devised grain refining and also microstructure homogenizing technique, has extensively been used on aluminum alloys…”
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Effect of process parameter on mechanical properties and fracture behavior of AZ91C/SiO2 composite fabricated by FSP by Dadashpour, M., Mostafapour, A., Yeşildal, R., Rouhi, S.

“…Friction stir processing is a variant of friction stir welding, which is used to locally reform the microstructure of the base metal. In the present study, the…”
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Application of response surface methodology for optimization of pulsating blank holder parameters in deep drawing process of Al 1050 rectangular parts by Mostafapour, A., Akbari, A., Nakhaei, M. R.

“…In deep drawing process, excessive mass flow causes wrinkling and insufficient mass flow causes fracture. Blank holder has direct influence on mass flow into…”
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Experimental investigation of the effect of vibration on mechanical properties of 304 stainless steel welded parts by Mostafapour, A., Gholizadeh, V.

“…Some of the problems that occur during the welding process include the creation of coarse grains in the weld structure and the hardening of the weld region,…”
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Influence of ultrasonic vibration on the microstructure and texture evolution of AZ91 magnesium alloy during ultrasonic-assisted friction stir welding by Baradarani, F., Emami, S., Mostafapour, A., MD, F. Khan

“…The aim of this work is to investigate the influence of ultrasonic vibration on the microstructure and texture evolution in ultrasonic-assisted friction stir…”
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Effect of heat treatment and number of passes on the microstructure and mechanical properties of friction stir processed AZ91C magnesium alloy by Dadashpour, M., Yeşildal, R., Mostafapour, A., Rezazade, V.

“…In this paper, the effect of heat treatment and number of passes on microstructure and mechanical properties of friction stir processed AZ91C magnesium alloy…”
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Leakage Locating in Underground High Pressure Gas Pipe by Acoustic Emission Method by Mostafapour, A., Davoodi, S.

“…Detecting gas leakage accurately in urban high-pressure natural gas pipelines is a great problem all over the world. Gas leakage may lead to pollution and…”
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Angiotensin-converting enzyme inhibitor, Enalapril, inhibits tumor growth and potentiates the antitumor efficacy of 5-FU in colorectal cancer by A. Mostafapour, F. Asgharzadeh, A. Yaghoubi, M. Eskandari, S. Elnaz Nazari, N. Naghibzadeh, J. Baharara, A. Avan, S. Mahdi Hassanian, M. Hajzadeh, M. Khazaei

“…OBJECTIVE: Colorectal cancer (CRC) is among the leading causes of cancer-related death, indicating the need for the identification of novel therapeutic…”
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A theoretical and experimental study on acoustic signals caused by leakage in buried gas-filled pipe by Mostafapour, A., Davoodi, S.

“…•Modeling of buried pipe radial displacement caused by acoustic emission.•Donnell’s non-linear theory.•Weaver-Unny theory.•Simulated continuous leak source…”
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Effects of Laser Welding Parameters on Polarization Resistance Of AISI 321 Austenitic Stainless Steel by Mostafapour, A., Davoodi, S.

“…Laser welding is one of the important welding methods with extensive applications in aerospace and automotive industries due to high quality and welding speed…”
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Effect of processing parameters on morphology and tensile properties of PP/EPDM/organoclay nanocomposites fabricated by friction stir processing by Nakhaei, M. R., Naderi, G., Mostafapour, A.

“…Nanocomposites-based on polypropylene (PP), ethylene-propylene diene monomer (EPDM) and Cloisite 15A have wide applications in automotive and aerospace…”
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The role of collagen crosslinking in the increased stiffness of avian dystrophic muscle by Feit, H, Kawai, M, Mostafapour, A S

“…The resting tension and stiffness in the range of sarcomere lengths 2.4-3.6 microns were studied in highly inbred normal and dystrophic chicken pectoral muscle…”
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Fabrication of Al/Graphite/Al2O3 Surface Hybrid Nano Composite by Friction Stir Processing and Investigating The Wear and Microstructural Properties of The Composite by A. Mostafapour, S. T. Khandani

“…Friction stir processing was applied for fabricating an aluminum alloy based hybrid nano composite reinforced with nano sized Al2O3 and micro sized graphite…”
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Increased resistance of the collagen in avian dystrophic muscle to collagenolytic attack: evidence for increased crosslinking by Feit, H, Kawai, M, Mostafapour, A S

“…Fibrous collagen from normal (line 412) and dystrophic (line 413) chicken pectoral muscles was examined for susceptibility to bacterial collagenase by a…”
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Investigation and Analysis of Weld Induced Residual Stresses in Two Dissimilar Pipes by Finite Element Modeling by Nadimi, S., Khoushehme, R.J., Rohani, B., Mostafapou, A.

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