نتایج جستجو برای: constant strain rate
تعداد نتایج: 1330094 فیلتر نتایج به سال:
به منظور بررسی تلفیق باکتری های محرک رشد و کود شیمیایی بر عملکرد و کیفیت شلغم علوفه ای، آزمایشی در مزرعه پژوهشی موسسه تحقیقات برنج کشور (رشت) در قالب طرح بلوک های کامل تصادفی در سال زراعی90- 1389 انجام شد. تیمارهای مورد بررسی در این تحقیق شامل تیمار بدون کود و بدون تلقیح (شاهد)، استفاده از کود کامل شیمیائی و بدون تلقیح، تلقیح با azotobacter chroococcum strain 41 و بدون کود نیتروژن، تلقیح با a. ...
The plastic behavior of materials depends on their strain rate sensitivity. The main objective of this paper is the analysis of the effect of strain rate sensitivity on plastic behavior of cylindrical shells under internal pressure loading and hence a large number empirical tests have been conducted on aluminum cylindrical shells. We have also manufactured and used a hydrostatic test machine to...
Hot deformation and softening response in boronmodified two?phase titanium aluminide Ti–48Al–2V–0.2B
Hot deformation and softening response for the titanium aluminide Ti–48Al–2V–0.2B has been investigated. The to mechanisms examined. Deformation experiments were carried out in strain rate range 0.01–10 s?1 keeping temperature constant at 1200 °C 1000–1200 1 s?1. With an increase rate, microstructural changes associated with mechanism include breaking of lamellae, spheroidization broken laths d...
A technique is developed for measuring the flow stress of metals over a broad range of strains, strain rates, and temperatures, in uniaxial compression. It utilizes a recent, enhanced version of the classical (Kolsky) compression split Hopkinson bar [l], in which a sample is subjected to a single stress pulse of a predefined profile, and then recovered without being subjected to any other addit...
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