نتایج جستجو برای: materials testing
تعداد نتایج: 757656 فیلتر نتایج به سال:
با توجه به نقش مهمی که عایق های الکتریکی در عایق بندی ادوات و تجهیزات فشار قوی دارند، بحث سلامت آنها در این مبحث بسیار مهم می باشد. یکی از مواردی که در عایق بندی مشکل ایجاد می نماید، وجود حفره در عایق ها می باشد که باعث کاهش توانایی عایقی می گردد. روشهای مختلفی برای شناسایی این عیب موجود می باشد. با توجه به روش های مرسوم تست غیر مخرب که بر پایه بر پایه التراسونیک استوار است، دستگاهی ساخته شد و ...
Non-destructive testing methods are used to detecting defects in materials and evaluation of materials properties without causing changes to their usable properties. They are applied in industry to provide the assurance of high quality for semi-manufactured products, final products, devices and materials. Except of many civilian applications they are widely used in rocket and aviation industry ...
Mn/DOT provides incentives to contractors who achieve high relative density via a pay factor applied to each unit of work. To determine the pay factor, Mn/DOT divides each day of a contractor's work into a small number of lots. Then, core samples are taken from two locations within each lot and the relative densities of the cores are calculated by performing standardized tests in materials test...
Metallic Magnesium (Mg) and its alloys are highly suitable for medical applications as biocompatible and biodegradable implant materials. Magnesium has mechanical properties similar to bone, stimulates bone regeneration, is an essential non-toxic element for the human body and degrades completely within the body environment. In consequence, magnesium is a promising candidate as implant material...
This past year there were a total of 14 faculty members involved in 40 sponsored research projects. Sponsors included government agencies, navy labs and industry. In addition to the sponsored faculty research there were 15 midshipmen involved in independent research projects with faculty, four of which were Bowman Scholars. Many of these projects were also funded by outside sponsors. Overall, 2...
The increasing power and reduced die size of CPUs used in computers increases a need for significantly improved thermal interface materials (TIM). The TIM is used to reduce contact resistance at the CPU-heat sink interface. This work provides a state-of-the-art assessment on “thermal interface materials,” including fundamentals, materials used, their performance, and how interface resistance is...
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