نتایج جستجو برای: forming severity

تعداد نتایج: 266601  

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2014
mohammad riahi mohamad hoseinpour gollo seiied nader ameli kalkhoran

laser forming is a modern process which is mainly used for forming metals. different lasers are used in this regard that includes nd: yag and co2. in this study, forming bi-layer sheets of aluminum/ceramic by laser was investigated. furthermore, effect of uniform and gaussian heat flux distribution in different power, velocity, and beam diameters on bending angle was studied. fem simulation ind...

Journal: :international journal of advanced design and manufacturing technology 0
hossein ghazavi nosratollah solhjoei

hydro-forming is a fabrication process that uses a fluid medium to form a piece by using high internal pressure. in tube hydro-forming, a tubular blank is placed between two dies, sealed and pressurized water injected, deforming the tube walls in the cavity form of the dies. exist several typical hydro-forming processes such as t- shapes, cross-shapes and y- shapes. successful hydro-forming dep...

Journal: :journal of computational applied mechanics 0
hosein mohammadi ms graduate, department of mechanical engineering, university of tehran, tehran, iran masoud sharififar department of metallurgy and material engineering, malek-ashtar university of technology, tehran, iran ali asghar ataee assistant professor, school of mechanical engineering, university of tehran, tehran, iran

the incremental sheet metal forming (ismf) process is a new and flexible method that is well suited for small batch production or prototyping. this paper studies the use of the finite element method in the incremental forming process of aa1050 sheets to investigate the influence of tool diameter, vertical step size, and friction coefficient on forming force, spring-back, and thickness distribut...

2009
Suman Yadav Nayyar Parvez

The authors evaluated and compared the efficacies of eye drops and in situ forming gel of pefloxacin mesylate in pseudomonas induced conjunctivitis in 40 rabbits. The in-situ forming gel of pefloxacin mesylate was formulated as a liquid and when administered in the cul-de-sac, it gets converted to gel. The objective of the present research work was to demonstrate the in vivo activity of in situ...

Journal: :Frontiers in bioscience : a journal and virtual library 2003
William G Robertson

A simple method for assessing the biochemical risk of forming uric acid and/or calcium-containing stones would be extremely useful for screening patients with urinary stone disease before and during their clinical management and follow-up. This paper describes a simplified procedure for calculating the overall biochemical risk of forming stones consisting of uric acid, calcium oxalate, calcium ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده ادبیات و علوم انسانی 1390

abstract birbery and corruption and other criminal and as such is one of social phenomena , and i can firmly say that society is protected and safe from harm , this is criminal . eache community is familiar with these crimes and the crime associated ( direct or indirect ) with the political economic , social , and cultural beliefs and religious issues , especially with the community . admitted...

Fatemeh Sadat Mohseni Armaki Seyyed Amirhossein Mohseni Armaki,

In this paper, the design and implementation of plasma antenna array with beam forming is discussed. The structure consists of a circular array of plasma tube enclosed in a unipolar UHF band monopole antenna. Beam forming is possible by stimulated plasma tubes. The combination of the above antenna with plasma excitation controller makes a beam forming smart antenna. An experimental model in UHF...

2014
Amanda Piarulli Jonathan Moreno

Bioethics has become a prominent part of the American landscape. In only a few short decades this interdisciplinary field permeated academia and the public sphere. Despite the recent scholarly effort to chronicle its history, there is still quite a bit of controversy surrounding bioethics’ origin and rapid evolution. Bioethics’ emergence has already been thoroughly examined through the lens of ...

In sheet metal forming processes with complex strain paths, a part is subjected to large plastic deformation. This severe plastic deformation leads to high plastic strain localization zones and subsequent accumulation of those strains. Then internal and superficial micro-defects and in other words ductile damage is created. This damage causes quality problems such as fracture. Therefore, design...

Journal: :Microbiology research 2023

Heterosigma akashiwo is a golden-brown unicellular phytoflagellate with high potential to create harmful algal blooms (HABs) and kill fish in many coastal regions worldwide, resulting significant economic losses. Climate change global warming have been introduced as triggers that impact the frequency severity of H. other bloom-forming species past decades. In this review paper, author tried bri...

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