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المواد الانشائية (Info)


تم التاكد من قابلية استخدام اللدائن الذكي في شكل فوم الحوائط المفتوحة بسبب قلة الوزن والحجم وأيضا التكلفة وهذا المبدا تم تسميته (الذاكرة المرنة نتيجة الاحتفاظ بالبرودة). وهناك العديد من المزايا وهي قلة الوزن وحجم التخزين والاعتمادية العالية وقدرة عالية على امتصاص الصدمات وسهولة التصنيع ومقاومة للاشعاعات وأيضا عزل حرارى وكهربائى. العيب الواضح ان الاستعداد يحتاج إلى مصدر حرارى. يتم استخدامهم في بناء نظام الاتصالات الارضية وفي الفضاء كما في مكوك الفضاء. تدل التحقيقات المتتابعة في تأثيرنوع خاص من الفوم على انها تتمدد إلى الحالة الاصلية في تقريبا 4 ايام وهذا يرجع إلى درجة حرارة التخزين للفوم القريبة من درجة حرارة التحول إلى زجاج للتخلص من كل حركات ميكرو- براونين مع حدوث ارخاء للانفعال المؤثر. هذه النقاط خارج اهمية اختيار المواد ذات ذاكرة الاحتفاظ بالشكل عند درجات التحول والتي تضمن انها ستؤدى كما متوقع في مدى درجات الحرارة لهذه التطبيق. عرض لينغ استخدام الفيبر المقوى مع اللدائن الذكية لزيادة الجساءة وقدرتها على تحمل الإجهادات العالية مما يسمح استخدامها في كراسى التحميل في المواد الانشائية. تم اجراء عدة تجارب في الوقت الحالى على اللدائن الذكية المقواة بالكربون حيث وجد ان هذا المركب يمكن استخدامه في تطبيقات الفضاء وتم اجراء هذه الاختبارات بسبب رغبة وزارة الدفاع الأمريكية ووكالة ناسا إلى مركب متوفر على الارض ويمكن تخزينه وارساله إلى الفضاء لاستخدامه في كجمالونات في البناء. لاعداد هذه النماذج التجريبية فان المادة المركبة يتم تسخينها وتشكيلها ثم يتم تبريدها مع وجود التشكل حتى يثبت على نفس الشكل. يتم تصنيع الجمالونات الغير المستوية المستخدمة في تطبيقات الفضاء من اللدائن الذكية كأساس ومقوى بالفيبركربون ووضحت نتائج الاختبارات ان هذه لجمالونات أفضل من الجمالونات المستخدمة حاليا.

Source: wikipedia.org
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Construction Materials

Construction Materials
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Construction Materials Industry Guide

Construction Materials Industry Guide
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Building Engineering And Construction Building Materials

Building Engineering And Construction Building Materials
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Logistic Concepts To Manage Needs (materials - Equipment - Construction)

Logistic Concepts To Manage Needs (materials - Equipment - Construction)
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Estimate The Quantities Of Construction Materials

Estimate The Quantities Of Construction Materials
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Road Construction Materials Testing Manual

Road Construction Materials Testing Manual
Public Domain
The Materials Of Construction. A Treatise For Engineers On The Strength Of Engineering Materials

The Materials Of Construction. A Treatise For Engineers On The Strength Of Engineering Materials
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Asphalt Materials And Methods Of Quality Control And Road Construction

Asphalt Materials And Methods Of Quality Control And Road Construction
Public Domain
Elasticity And Strength Of Materials In Construction

Elasticity And Strength Of Materials In Construction
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Building Materials

Building Materials
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What Material?

What Material?
Public Domain
Colonial Williamsburg Its Buildings And Gardens

Colonial Williamsburg Its Buildings And Gardens
Public Domain
Economics Of The Construction Industry

Economics Of The Construction Industry
Public Domain
Engineering Construction ..

Engineering Construction ..
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Public Domain
Engineering Construction In Steel And Timber

Engineering Construction In Steel And Timber
Public Domain
Engineering Construction In Steel And Timber

Engineering Construction In Steel And Timber
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Descriptive Cataloging Of Library Materials

Descriptive Cataloging Of Library Materials

 
Public Domain
[l.l. May & Co. Materials]

[l.l. May & Co. Materials]
Public Domain
The Testing Of Materials Of Construction, A Text-book For The Engineering Laboratory And A Collection Of The Results Of Experiment

The Testing Of Materials Of Construction, A Text-book For The Engineering Laboratory And A Collection Of The Results Of Experiment
Public Domain
Aeroplane Construction and Operation

Aeroplane Construction and Operation
Public Domain
Railway Construction

Railway Construction
Construction Project Management

Construction Project Management
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Material And Materials - More Than 40 Amazing Experiences

Material And Materials - More Than 40 Amazing Experiences
Public Domain
Elasticity And Strength Of Materials Used In Engineering Construction ..

Elasticity And Strength Of Materials Used In Engineering Construction ..
Public Domain
[condon Brothers Materials]

[condon Brothers Materials]
Public Domain
The Construction of the Small House A Simple and Useful Source of Information of the Methods of Building Small American Homes, for Anyone Planning to Build

The Construction of the Small House A Simple and Useful Source of Information of the Methods of Building Small American Homes, for Anyone Planning to Build
Public Domain
Conductors For Electrical Distribution; Their Materials And Manufacture, The Calculation Of Circuits, Pole-line Construction, Underground Working, And Other Uses

Conductors For Electrical Distribution; Their Materials And Manufacture, The Calculation Of Circuits, Pole-line Construction, Underground Working, And Other Uses
Public Domain
[condon Brothers Materials]

[condon Brothers Materials]
Public Domain
Concrete In Constructions

Concrete In Constructions
Public Domain
Plank Frame Barn Construction

Plank Frame Barn Construction
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The publisher is the author
Construction Drawing

Construction Drawing
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How Do You Write A Creation Topic?

How Do You Write A Creation Topic?
Building Materials In The Province Of Tripoli In The Phoenician Era

Building Materials In The Province Of Tripoli In The Phoenician Era

 
Public Domain
Concrete Construction: Methods and Costs

Concrete Construction: Methods and Costs
General Material

General Material

 
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Implementation Requirements For Materials And Items Of Contracting Works

Implementation Requirements For Materials And Items Of Contracting Works

Book Categories

Novels And Literary Stories Islamic Religion Human Development And Self-development History Islamic Fiqh Literature Interpretation Of The Koran Philosophy And Logic Islamic Faith The Culture Biographies, Translations And Life Of The Famous People Biography Of The Prophet Muhammad, May God Bless Him And Grant Him Peace Psychology Teaching English English Islamic Philosophy Arabic Literature Arabic Sciences Of The Noble Qur’an And The Sunnah Of The Prophet Political Science And Strategy History Acclamation The Holy Qur'an Engineering Poetry And Poets Education More of Book Categories

Authors of books

Mustafa Mahmoud The Words Of God Almighty Ibrahim AlFiqi Muhammad Bin Saleh AlUthaymeen Ibn Qayyim Al-Jawziyya Ahmed Khaled Tawfiq Fahad Amer AlAhmadi Muhammad Metwally AlShaarawi Ali Bin Jaber AlFifi Dale Carnegie Islam Gamal Sayed Qutb Muhammad AlGhazali Omar AlHourani Agatha Christie Muhammad Bin Ismail AlBukhari Abbas AlAkkad Abu Hamid AlGhazali Najib Mahfouz Jalal AlDin AlSuyuti Fyodor Dostoevsky Bin Taymiyyah Ismail Bin Omar Bin Katheer AlQurashi Aldamashqiu Ibrahim Al-Sukran Mustafa AlAdawi More of Authors of books