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Article
Effect of Mid Plane Layer on Flexural Properties of Plies Under Transverse Loading
تاثير الطبقة الوسطية على متانة الانحناء للطبقات تحت الاجهاد المستعرض

Authors: Zainab Raheem Muslem زينب رحيم مسلم --- Harith Ibrahim Jaffer حارث ابراهيم جعفر
Journal: Albahir journal مجلة الباهر ISSN: 23125721 Year: 2015 Volume: 2 Issue: 3,4 Pages: 15-19
Publisher: AL-Abbas Holy Shrine العتبة العباسية المقدسة

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Abstract

Abstract The effect of mid layer on flexural strength and young modulus were studied using Instron testing machine. E-glass/epoxy composites were manufactured using hand lay-up technique. The laminated composites were prepared with dimension (4x10x80) mm, Epoxy composites were reinforced with multidirectional layer of woven glass fiber and random glass fiber of stacking sequence [M]16, [R]16, [M/R//M1/M1//R/M]s, [//M/R//]s, and [R/M//R1/R1//M/R]s. The effect of transverse loading on flexural strength and young modulus was investigated for specimens subjected to Three-point bending test. The results show that the mid layer (M1/M1) which had (homogeneous distribution) has higher flexural strength value and young modulus than mid layer (M1/R1) and (R1/R1).

ﺍﳋﻼﺻﺔ ﺗﻢ ﺩﺭﺍﺳﺔ ﺍﻟﻄﺒﻘﺔ ﺍﻟﻮﺳﻄﻴﺔ ﻋﲆ ﻣﺘﺎﻧﺔ ﺍﻻﻧﺤﻨﺎﺀ ﻭﻣﻌﺎﻣﻞ ﻳﻮﻧﻚ. ﺗﻢ ﲢﻀﲑ ﻣﱰﺍﻛﺒﺎﺕ ﻣﻦ ﺍﻻﻳﺒﻮﻛﴘ- ﺍﻟﻴﺎﻑ ﺯﺟﺎﺟﻴﺔ .ﺳﻠﺤﺖ ﺍﳌﱰﺍﻛﺒﺎﺕ ﺑﻄﺒﻘﺎﺕ ﻣﺘﻌﺪﺩﺓ ﻣﻦ ﺍﻟﻴﺎﻑ ﺯﺟﺎﺟﻴﺔ ﻋﺸﻮﺍﺋﻴﺔ ﻭﺣﺼﲑﺓ.ﺗﻢ ﺩﺭﺍﺳﺔ ﺍﻻﺟﻬﺎﺩ ﺍﳌﺴﺘﻌﺮﺽ ﻋﲆ Eﻧﻮﻉ –ﻣﺘﺎﻧﺔ ﺍﻻﻧﺤﻨﺎﺀ ﻭﻣﻌﺎﻣﻞ ﻳﻮﻧﻚ ﺑﺎﺳﺘﺨﺪﺍﻡ ﻓﺤﺺ ﺍﻻﻧﺤﻨﺎﺀ ﺍﻟﺜﻼﺛﻲ. ﺍﻇﻬﺮﺕ ﺍﻟﻨﺘﺎﺋﺞ ﺍﻥ ﺍﻟﻄﺒﻘﺔ ﺍﻟﻮﺳﻄﻴﺔ ﻧﻮﻉ ﺣﺼﲑﺓ ﺣﺼﲑﺓ ﻭﺍﻟﺘﻲ ﲤﻠﻚ ﺗﻮﺯﻳﻊ ﻣﺘﺠﺎﻧﺲ ﺍﻇﻬﺮﺕ ﻣﺘﺎﻧﺔ ﺍﻻﻧﺤﻨﺎﺀ ﻭﻣﻌﺎﻣﻞ ﻳﻮﻧﻚ ﻋﺎﻟﻴﲔ ﻭﻫﻲ ﺍﻋﲆ ﻣﻦ ﻣﻦ ﺣﺼﲑﺓ -ﻋﺸﻮﺍﺋﻲ ﻋﺸﻮﺍﺋﻲ


Article
A Study of the mechanical properties of aluminum composite materials prepared by atomization process
دراسة الخواص الميكانيكية لمتراكبات الألمنيوم المحضرة بطريقة التذرية

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Abstract

Steel fiber aluminum matrix composites were prepared by atomization technique. Different air atomization conditions were considered; which were atomization pressure and distance between sample and nozzle. Tensile stress properties were studied. XRF and XRD techniques were used to study the primary compositions and the structure of the raw materials and the atomized products. The tensile results showed that the best reported tensile strength observed for an atomization pressure equal to 4 mbar and sample to nozzle distance equal to 12 cm. Young modulus results showed that the best result occurred with an air atomization pressure equal to 8 mbar and sample to nozzle distance equal to 16cm.

تم تحضير متراكبات أساس الألمنيوم المدعمة بألياف الفولاذ بطريقة التذرية. تم أخذ ظروف مختلفة لعملية التذرية بنظر الأعتبار وهي ضغط التذرية و المسافة بين العينة والمرذاذ. درس التأثير على خواص اجهاد الشد. تقنيات فلورة الأشعة السينية و حيود الأشعة السينية أستخدمت لدراسة التركيب الأولي و الخواص التركيبية للمواد الأولية والمواد الناتجة من الترذيذ. أظهرت نتائج الشد ان أفضل نتيجة موثقة لحد المرونة لوحظت عند ضغط تذرية يساوي mbar4 و عند بعد للعينة من المرذاذ يساوي cm12 . أما لمعامل يونك فكانت عند ضغط تذرية باستخدام الهواء يساوي mbar8 و عند بعد للعينة من المرذاذ يساوي cm16.

Keywords

MMCs --- Atomization --- Tensile.

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