A composite a. Is any multiphase material that combines differing constituent ph

Question

A composite a. Is any multiphase material that combines differing constituent phases b. Has a matrix and a dispersed phase c. Are engineered to produce a superior material with a better combination of properties d. All of the above The rule of mixtures for fiber reinforced composites: a. is accurate for Young's modulus, stresses, density b. is accurate for tensile strength c. is to be used with caution for some properties and depending on bonding properties between fiber and matrix d. a and c The properties of particle reinforced composites a. can be determined accurately with the rule of mixtures b. fall between an upper bound and a lower bound c. Take into account the interface between particles and matrix Laminates: a. Combine several layers of an anisotropic composite to create a more isotropic material b. Combine thin facesheets and a porous material c. Create a high moment of inertia

Explanation / Answer

9. Option D

Composite Material is Composition of two or more material at microscopic level having Dispersed phase and Matrix combination

Composite material are made to improve mechanical properties

10. Option D

Rule of mixture is accurate for the Youngs Modulus EC= EF VF + EM VM

C= composite, F= Fiber, M= Matrix

Also it is to be used with caution for some properties and deending on the bonding properties of Fiber and matrix.

11.Option C.

Particle-reinforced composite is particle-matrix interactions cannot be treated on an atomic or molecular level

- The degree reinforcement or improvement of mechanical behavior depends on strong bonding at the matrix- particle interface.

12. Option a.

Laminates are assembly of layers , fiber composite material, and by joining all layers would provide improved mechanical proerties.

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