نتایج جستجو برای: Impact Resistance

تعداد نتایج: 1117840  

Journal: :journal of ultrafine grained and nanostructured materials 2013
shokoofeh dolati abdolhosein fereidoon ali sabet

this study investigated the influence of nanoclay on the impact damage resistance of glass fiber-epoxy composites under high velocity ice impact loading. addition of 0.5 wt. % nanoclay into epoxy was shown to improve damage resistance compared to composite plates having no nanoclay platelet. the glass fiber-epoxy composites containing nanoclay brought about substantial improvement in ice impact...

Journal: :international journal of advanced design and manufacturing technology 0
sadegh rahmati j marzbanrad h.r. khalili

the impact resistance of new lightweight panel is studied. this panel consists of two thin metal layers bonded together by intermediate fiber/epoxy layers (mcm-sheets). to simulate a behavior of this kind of impact problem, explicit and implicit finite element software abaqus is used. in order to validate the finite element modeling, these results have been compared with experimental test resul...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
a. nikoui a. dalvand m.k. sharbatdar a. kheyroddin

in the current study an experimental/statistical approach addressing key mechanical properties (compressive, tensile and flexural strength) and impact resistance of such new fibers with inclusion of different volume of polyphenylene sulfide (pps) fibers has been carried out on 288 specimens. results from this study revealed that compressive, tensile and flexural strength exhibit a good fit with...

This study investigated the influence of nanoclay on the impact damage resistance of glass fiber-epoxy composites under high velocity ice impact loading. Addition of 0.5 wt. % nanoclay into epoxy was shown to improve damage resistance compared to composite plates having no nanoclay platelet. The glass fiber-epoxy composites containing nanoclay brought about substantial improvement in ice impact...

Journal: :international journal of nanoscience and nanotechnology 2013
sh. dolati a. fereidoon a. r. sabet

the influence of nanoclay on the impact damage resistance of glass fiber–epoxy composites has been investigated using high-velocity repeated ice impact tests. the incorporation of nanoclay into epoxy enhances the impact resistance of the composites. the impact of ice is a realistic scenario for composite structures such as aircraft fuselages, wing skins and fan blades and it is not a completely...

Journal: :تحقیقات مهندسی کشاورزی 0
مهدی کسرائی دانشجوی دکتری دانشگاه تربیت مدرس، دانشگاه شیراز علیرضا صبور روح اقدم استادیار دانشکده مهندسی، دانشگاه تربیت مدرس.

the plain carbon steel “ck45” has relatively well mechanical and metallurgical properties and low cost. the purpose of this research was the property evaluation of this steel on abrasive wear and impact for using in plows and other tillage tools. tillage tool should resist in abrasive wear and impact simultaneously. several heat treatments were done on specimens of this steel. a standard test d...

A. Fereidoon A. R. Sabet Sh. Dolati

The influence of nanoclay on the impact damage resistance of glass fiber–epoxy composites has been investigated using high-velocity repeated ice impact tests. The incorporation of nanoclay into epoxy enhances the impact resistance of the composites. The impact of ice is a realistic scenario for composite structures such as aircraft fuselages, wing skins and fan blades and it is not a completely...

Journal: :جنگل و فرآورده های چوب 0
سامان قهری دانشجوی دکتری فرآورده های چندسازة چوب گروه علوم و صنایع چوب و کاغذ دانشکدة منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، نور، ایران بهبود محبی دانشیار گروه علوم و صنایع چوب و کاغذ دانشکدة منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، نور، ایران سعید کاظمی نجفی استاد گروه علوم و صنایع چوب و کاغذ دانشکدة منابع طبیعی و علوم دریایی دانشگاه تربیت مدرس، نور، ایران

the effect of impact modifier on creep behavior of wood flour- recycled polypropylene composites has been evaluated in this work. for this purpose, impact modifier (ethylene vinyl acetate) and recycled polypropylene were mixed with wood flour (50/50% w/w) as well as the impact modifier (0, 3%, 6% and 9%) by a counter-rotating twin-screw extruder to manufacture the wood flour- recycled polypropy...

G. H. Akbari, M. A. Sheikhi,

Abstract: Ball mills are used in the last stage of ore processing for grinding raw materials. Forged 70Cr2 alloy steel and Austempered Ductile Iron (ADI) balls are materials from which grinding balls are made for Sarcheshmeh Copper Plant (SCP) ball mills. In the present study wear and impact properties of these two kinds of balls have been investigated. Some balls randomly were selected as ...

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