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نوع مطلب : رایانه و اینترنت
نوشته شده در سه شنبه ۳ خرداد ۱۳۹۰ توسط SMSM |           |

Stainless steels represent a class of iron base materials which have a certain resistance to rusting and corrosion in some environments, due to the presence in their composition of at least 12% of the element Chromium. The reason of this behavior is that chromium helps produce on the material's surface a tough and impervious layer of chromium oxide, which is the shield protecting the surface from rust and corrosion.

نوع مطلب : مهندسی مکانيک - ساخت و جوش
نوشته شده در دوشنبه ۵ اردیبهشت ۱۳۹۰ توسط SMSM |           |

John Richard Harris: Whenever I am asked to disclose my principal formula for a successful garden, I will invariably return the same verdict - to evoke an atmosphere is paramount. Many of the ideas I employ in garden design originate from something I have encountered at some stage in my life. When anything appeals to me for a particular reason, and I later find that it can be utilised within my design work, it isn't merely the visual element that intrigues me, it is the experience of that previous incident that will always play a crucial role in its reconstruction.

نوع مطلب : مهندسی کشاورزی
نوشته شده در جمعه ۲ اردیبهشت ۱۳۹۰ توسط SMSM |           |

A review of how magnetic pulse welding works, in what applications it can be used, and what considerations users must take to perform it properly.

Engineers are discovering a variety of applications for a new solid-state welding process known as magnetic pulse welding (MPW). MPW has been theorized and tested for decades, but it is only recently that manufacturers have been exposed to the possibilities of running an MPW system on their lines.

نوع مطلب : مهندسی مکانيک - ساخت و جوش
نوشته شده در شنبه ۲۰ فروردین ۱۳۹۰ توسط SMSM |           |

The stainless properties of stainless steels are primarily due to the presence of chromium in quantities greater than roughly 12 weight percent. This level of chromium is the minimum level of chromium to ensure a continuous stable layer of protective chromium-rich oxide forms on the surface. The ability to form chromium oxide in the weld region must be maintained to ensure stainless properties of the weld region after welding. In commercial practice, however, some stainless steels are sold containing as little as 9 weight percent chromium and will rust at ambient temperatures.
Stainless steels are generally classified by their microstructure and are identified as ferritic, martensitic, austenitic, or duplex (austenitic and ferritic). The microstructure significantly affects the weld properties and the choice of welding procedure used for these stainless steel alloys. In addition, a number of precipitation-hardenable (PH) stainless steels exist. Precipitation-hardenable stainless steels have martensitic or austenitic microstructures.

نوع مطلب : مهندسی مواد - متالورژی
نوشته شده در دوشنبه ۱۸ بهمن ۱۳۸۹ توسط SMSM |           |

Modern Design Magazine #2
Modern Design: Architecture & Art Magazine #2, August 2007
Language: English
PDF | 100 pages | 13 Mb

نوع مطلب : هندبوک ها و جزوه های مهندسی
نوشته شده در یکشنبه ۱۲ دی ۱۳۸۹ توسط SMSM |           |

Modern Design Magazine #1
Modern Design: Architecture & Art Magazine #1, July 2007
Language: English
PDF | 100 pages | 16 Mb

نوع مطلب : هندبوک ها و جزوه های مهندسی
نوشته شده در یکشنبه ۱۲ دی ۱۳۸۹ توسط SMSM |           |

Advances in Mechanics of Solids:
In Memory of Professor E. M. Haseganu

World Scientific Publishing Company | August 10, 2006 | ISBN: 9812568670 | 296 pages | 11 Mb

نوع مطلب : هندبوک ها و جزوه های مهندسی
نوشته شده در شنبه ۱۱ دی ۱۳۸۹ توسط SMSM |           |

Sustainable Landscape Construction: A Guide to Green Building Outdoors, 2 Ed

براي مهندسان معماری 

Published at the beginning of the twenty-first century, Sustainable Landscape Construction took a new approach to what was then a nearly new subject: how to construct outdoor environments based on principles of sustainability. This enormously influential book helped to spur a movement that has taken root around the U.S. and throughout the world. The second edition has been thoroughly updated to include the most important developments in this landscape revolution, along with the latest scientific research in the field. It has been expanded to provide even more ideas for designing, building, and maintaining environmentally sensitive landscapes. It is essential reading for everyone with an interest in “green” landscape design.

نوع مطلب : هندبوک ها و جزوه های مهندسی
نوشته شده در جمعه ۷ آبان ۱۳۸۹ توسط SMSM |           |