
Interpretation:
The term 'composite' should be defined.
Concept Introduction:
Composites are formed when two or more material of different properties combines.

Explanation of Solution
Composites are formed by materials whose physical and chemical properties are different from each other. The formation of composites results in the property which alone cannot be reached by material
The properties of material through which composites are formed are divided in two main categories
- Matrix material − it helps in supporting the relative position.
- Reinforcement material- it helps in support the
mechanical properties such as load.
For the formation of composites, matrix material is in continuous phase and reinforcement material is in dispersing phase. The individual properties and volume fraction of both the materials are considered.
Based on matrix material, the material can be polymer, metal, ceramics, and carbon.
Matrix composites are classified as polymer matrix composites, metal matrix composites, ceramic matrix composites and carbon matrix composites.
Based on reinforcement material, the material can be fibers, flakes, particulates, and microspheres.
Reinforcement composites are classified as fibers reinforcement composites, flakes reinforcement composites,flakesreinforcement composites.
Composites offer the property which cannot be achieved by matrix and reinforcement materials independently. Composites offer the following properties:
- Light weight
- Imparts strength
- Resistance to corrosion
- Flexibility of converting complex structure
- Fatigue resistant
Composites had a wide application in engineering fields and formation of different products.
Application of composites:
- Aerospace industries
- Automobile industries
- Fishing rods
- Helmets
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Chapter 17 Solutions
Essentials Of Materials Science And Engineering
- Q1) Choose the correct answer: 1- Rankine's theory of earth pressure neglect: The pressure on the wall is to act parallel to the surface of the soil at angle (B) to the horizontal. The effect of cohesion on active and passive pressure. The friction developed between a retaining wall and the soil. o The depth of tension zone. o The effect of water table. 2- The lateral earth pressure is the lateral pressure that developed from: o Water beside it. o Soil beside structure. o External loads. o All the above. o Excavation beside structure. 3- The coefficient of earth pressure at rest represented as o Ko-1-sing expression given by Jaky. o Ko-sing 。 Ko-1-cosp о o Ko-cosp 。 Ko" tano 4- If the backfill carries a uniform surcharge q, then the lateral pressure at the depth of wall His: o pa-Ka yz+Ka q o pa Ka yz-Ka q o pa Ka yz*Ka q o pa Ka yz/Ka q 。 pa=Ka yz+q 5- During the active state of plastic equilibrium, the retaining wall moves: o Towards the fill o Away from the fill o Does not change…arrow_forwardس 1: سم ، خمن كمية الأعمال الترابية اللازمة لتنفيذ جزء من القناة وفقًا للبيانات التالية: عرض القناة = 3م المنحدر الجانبي في الحفر = 1:1 وفي الدفن = 1:1.5 عرض الضفة = 2 م من الجانبين عمق الاملاء الكامل ) full supply depth)= 80 السافة العمودية بين اعلى مستوى للمياه واعلى نقطة في الضفة الجانبية ( free board) = 40 سم، ميل القاعدة = 1:5000 مستوى قاعدة القناة المقترح R.D. (m) 1000 2000 3000 4000 G.L. (m) 210.8 210.4 208.8 208.4 FSD 210= (P.B.L) BANK OF CHANNELarrow_forwardA 8.5 meter simply supported reinforced concrete beam on parallel rectangular column, where the column width is 300 mm is shown in Figure carries a uniformly distributed variable action of 10 kN/m and permanent action of 9 kN/m (including self-weight of beam). The clear cover of beam for class XC-1 is 25 mm, diameter of main and shear reinforcement are 20 mm and 8 mm respectively. The characteristic material strengths are fck = 30 N/mm² and fyk = 500 N/mm². Apply variable Strut Inclination Method to design the shear reinforcement (links) for the beam. h = 370 mm 마 *b = 230 mm Section A-Aarrow_forward
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