نتایج جستجو برای: formability erichsen design of experiment

تعداد نتایج: 21240343  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1389

abstract type-ii fuzzy logic has shown its superiority over traditional fuzzy logic when dealing with uncertainty. type-ii fuzzy logic controllers are however newer and more promising approaches that have been recently applied to various fields due to their significant contribution especially when the noise (as an important instance of uncertainty) emerges. during the design of type- i fuz...

Effect of temperature on formability of AA6063 aluminum tubes in incremental forming process was investigated. Experiments are performed on AA6063 aluminum tubes. A spirally moving tool incrementally expands the tube wall. The tube is clamped from both ends while the deformation zone is not in contact with the die. A circumferential heating system is used to heat the tube due to the low formabi...

پایان نامه :دانشگاه تربیت معلم - سبزوار - دانشکده علوم انسانی و پایه 1393

burnout is a response to the chronic work stress which is prevalent mostly among the people who do people job, like teaching. the purpose of this study was to develop a valid and reliable instrument that can measure burnout in foreign language teachers. although some widely used instruments were developed before which measured burnout in teachers, a specific instrument which include specific sy...

The aim of this study was to prepare orally disintegrating tablets (ODTs) containingdexamethasone (DEX) by direct compression method with sufficient hardness and rapiddisintegration time. In order to save time, money, and human resources in designing andimprovement of formulation, the statistical software Design Expert is used. Box–Behnkenresponse surface methodology was applied to evaluate and...

پایان نامه :0 1374

in fact this study is concerned with the relationship between the variation in thematice structure and the comprehension of spoken language. so the study focused on the following questions: 1. is there any relationship between thematic structure and the comprehension of spoken language? 2. which of the themes would have greated thematic force and be easier for the subjects to comprehend? accord...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1392

the extent to which written corrective feedback on linguistic errors can play a role in helping l2 writers improve the accuracy of their writing continues to be an issue of interest to researchers and teachers since truscott (1996) mounted a case for its abolition. while there is growing empirical evidence that written corrective feedback can successfully target some types of linguistic error (...

Journal: :مدیریت صنعتی 0
لیلا علی زاده دانشجوی کارشناسی ارشد مهندسی صنایع دانشکدة مهندسی صنایع، دانشگاه آزاد واحد جنوب، تهران، ایران. رسول نورالسناء استاد دانشکدة مهندسی صنایع، دانشگاه علم و صنعت، تهران، ایران. صدیق رئیسی دانشیار دانشکدة مهندسی صنایع، دانشگاه آزاد اسلامی، واحد جنوب، تهران، ایران.

since the analysis of complex services systems by using mathematical modeling techniques, with considering the random patterns prevailing in them, is so difficult or probably impossible, improvement guidelines are often followed based on the experts' experiences using qualitative methods. in the present paper, by employing a discrete event computer simulation methodology, criminal trial sy...

Journal: :SSRG international journal of mechanical engineering 2023

In the present production process Incremental Sheet Forming (ISF) is a modern malleable forming practice which enables of with help Computer Numerical Control (CNC) Vertical Milling Machine (VMC). ISF used good malleability for conventional milling machines less intricate tool and die to make machining as much cost-effective also it automation. This research study aims provide solution towards ...

Honing is a process for finishing surfaces to obtain smooth surface. This process is used for final polish of inner parts such as engines cylinders. Optimizing this process has always been a big challenge for mass production of cylinder blocks of internal combustion engines. Honing process has some variable parameters, thus to get their optimum rates the automobile cylinders were tested. In thi...

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