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Amin Shahrestani Azar

Forsker

Amin Shahrestani Azar

Forsker

Amin Shahrestani Azar
Telefon: 968 33 668
Avdeling: Metallproduksjon og prosessering
Kontorsted: Oslo

Publikasjoner og ansvarsområder

Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1408802

Fixed abrasive wire sawing has become the method of choice for slicing single crystal silicon ingots. During the wafering process, diamond grains penetrate into the silicon while sliding along the material at the speed of several meters per second. This leaves a significant amount of sub-surface dam...

Forfattere S. Azar Amin
År 2016
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1260072

A heat source model is proposed to simulate the effect of periodic and recurrent arcing and metal deposition phenomena in the cold metal transfer type of welding. This model will facilitate studying of weld pool behavior and resultant mechanical properties in detail for this type of welding. The pro...

Forfattere S. Azar Amin
År 2015
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1248862

In the present study, electron backscattered diffraction is used to analyze the fatigue crack evolution in a high strength steel weld that was loaded cyclically in the plastic regime. Three prominent regions of a fatigue crack are investigated separately: crack tip, crack trajectory and crack initia...

Forfattere S. Azar Amin
År 2015
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1122470

The deepwater hyperbaric GMA welding procedures for sub-sea pipeline repair are evaluated with respect to its behavior under shallow water conditions. In this study, the welding thermal cycles at three different pressure levels were investigated through experiments and simulations. Conventional ther...

Forfattere Azar Amin S.
År 2013
Type Del av bok/rapport
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+934781

Hyperbaric arc welding is a special application of joining the pipeline steels under seawater. In order to analyze the behavior of the arc under ambient pressure, a model is required to estimate the arc efficiency. A distributed point heat source model was employed. The simulated isotherms were cali...

Forfattere S. Azar Amin
År 2012
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+934780

Selection of chamber gas composition for a viable and time-consuming underwater repair operation is influenced by the final mechanical properties that each shielding environment can offer. Tensile and fracture toughness tests were performed on five bead-on-plate test samples that were welded under d...

Forfattere S. Azar Amin
År 2012
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+922490

The development of the texture components in the X70 weld metal under several shielding environments was investigated using the electron-backscattered diffraction (EBSD) and orientation imaging microscopy (OIM) techniques. A new method for assigning the reference direction (RD), transverse direction...

Forfattere S. Azar Amin
År 2012
Type Tidsskriftspublikasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+850232

The deepwater hyperbaric GMA welding procedures for sub-sea pipeline repair are evaluated with respect to its behavior under shallow water conditions. In this study, the welding thermal cycles at three different pressure levels were investigated through experiments and simulations. Conventional ther...

Forfattere S. Azar Amin
År 2012
Type Konferansebidrag og faglig presentasjon
Publikasjon
https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+850229

Analytical and numerical approaches are used to model a gas metal arc welding (GMAW) process. In order to simulate the detailed aspects of material changes during the process, it is important to implement the correct size and distribution of the heat source. In this study the dimensions of a heat so...

År 2012
Type Tidsskriftspublikasjon