Calculate the density of a composite made with 35% Kevlar-49 fibers in an epoxy resin (ρ = 1.1 kg/m3, E = 2.5 GPa). For Kevlar-49, Ef = 131 GPa; density = 1440 kg/m3

Q: Define the term Elastoplastic?

A: Elastoplastic stress is defined as the stress between the elastic stress and its breaking stress of…

Q: Bakelite is an example of polymer. Select one: O Thermoset O Thermoplastic O Composite O Elastomers

A: The rigid type of plastic which is highly resistant to high temperature form the Bakelite.

Q: 3. The geometry of the reinforcing phase in a composite greatly determines the overall properties.…

A:

Q: How do I solve for expected modulus, in GPa, for this loading scenario if the fibers comprise 65%…

A: As per given question  Volume of fiber comprise=65% Elastic modulus =3.0 gpa Elastic modulus of…

Q: For a continuous and aligned fiber-reinforced composite, the modulus of elasticity in the transverse…

A: Given Data: Modulus of elasticity of matrix phase, Em=3.78 GPa

Q: B- Clarify The behavior of particulate, composites and how can calculate the elastic modulus of…

A: When discrete particles are spread throughout a matrix material, it creates a type of composite…

Q: Answer the following questions. i) Write down the important properties of polymers. : ii) What do…

A: (i) Important properties of the polymers. The non-conducting property. Polymers act as good…

Q: For continuous and aligned fibre composites, prove that the Young's modulus of the composites along…

A: Given: There is a continuous and aligned fiber composite. And composite has matrix and fiber. Youngs…

Q: A steel plate used for polymer forming is to be bent into a circular shape having an inside radius…

A:

Q: Consider a carbon fibre composite, made using an epoxy resin. The modulus of the fibres Efis 210…

A: Composite Materials - These materials have thee micro-structure designed in terms of their…

Q: Please calculate UD composite material averaged mechanical constants EL; Er; VEr; Gu Fiber and…

A:

Q: Connecting rod (as shown below) is a car part that connects engine piston to crankshaft and converts…

A: Solution: Given Data: Tmax=150oC

Q: A composite bar has a cross-section of three layers of polyester that are 15mm thick each (100mm…

A:

Q: Why are composites used in engineering?

A: introduction; composite are made by mixing of two or more different material. these material have…

Q: Give an approximate value for the tensile strength of a Boron/Aluminum composite with Vf = 0.4.…

A: The matrix is aluminum and fibers are of boron. The volume fraction of fiber is Vf=0.4. The elastic…

Q: Calculate the modulus of rigidity (shear modulus) of an epoxy resin if the modulus of elasticity…

A: Given   Young's Modulus, E = 3.5 GPa             Poisson ratio = 0.35 Find  Modulus of rigidity, G

Q: The 40mm diameter steel rod AB shown in Figure 2 is resting on frictionless rollers between two…

A:

Q: Compute the expected properties of modulus of elasticity (Ec) of a composite made from S-glass…

A:

Q: Using the ‘rule of mixtures’ calculate the modulus and strength,  in the fiber direction and…

A:

Q: Example 1 A continuous and aligned glass fiber-reinforced composite consists of 40 vol% of glass…

A:

Q: sketch the generalized stress-strain curve for a semi-crystalline thermoplastic polymer.

A: Solution:   The Generalized stress-strain curve with points labeled for a semi-crystalline…

Q: Calculate the effort (F) that has to be applied in the pulley system

A: As shown in figure , m=100 kg is loaded at pulleysthen tension on role is…

Q: Polyurethane are classified as Elastomer materials Select one: .True .False

A: elastomer is polymer which possess both properties viscosity and elasticity. its also called as…

Q: Problem 4 Calculate the tensile modulus of elasticity of a unidirectional…

A:

Q: Draw stress-strain graphs for two polymers: one is stiffer than the other and exhibits a yield point…

A:

Q: A flat body panel of a Lockheed Martin F25 is to produce using a unidirectional fiber/epoxy matrix…

A:

Q: An old composite product of a company is comprised of 40 vol% fibre with the Young's modulus (E =…

A: Objective:Identify which of the following statement is false regarding the replacement if Young's…

Q: The elastic modulus of the matrix and particulate phases of a fiber-reinforced composite are 3.4 GPa…

A: given data elastic modulus of matrix = 3.4 Gpa elastic modulus of particulate = 121 Gpa both have…

Q: A new composite material is to be manufactured from carbon fibre and resin component materials. The…

A: Given data: EC=8.25 GPaEf=142 GPaER=5.42 GPa Need to determine the relative volume fraction of…

Q: RT 80 -20 °C - -60 °C --- 60 40 20 0.005 0.01 0.015 0.02 Strain HW: Determine the YS of glass/epoxy…

A: Yield strength : It is the  stress at which the plastic deformation of the material starts to occur,…

Q: In a polymer-polymer composite, the weight percentage of the polymer 1 and polymer 2 are 20% and 80%…

A:

Q: Using the table below, estimate the components of the matrices and develop the stiffness and…

A: Solution: Given Data: Material is E-glass/470-36 E-glass/vinylester   To Find: (a) The stiffness…

Q: By giving examples, describe FOUR fiber factors that affects the mechanical performance of composite…

A: Fiber factor: If the volume of fiber multiply by the aspect ratio gives the fiber factors. The…

Q: For continuous and aligned fibre composites, prove that the Young's modulus of the composites along…

A: Ec = youngs modulus of composite Em = youngs modulus for matrix Ef = youngs modulus for fiber Vm =…

Q: Plzz solve I give you rating

A: Given unidirectional laminate, vf=Fibre volume fraction=0.55Ef=Young's modulus of carbon fire=310…

Q: (i) thermal conductivity (ii) composite wall (iii) diffusion

A: This question is based on the concept of heat transfer.

Q: Q1: The fibers in a unidirectional lamina have a diameter of 12 µm and weight fraction of 60%. The…

A:

Q: Answer the following questions. i) Define the term composites. ( ii) Explain the fibre reinforced…

A: (i) The composites are the material composed from two or more different materials that, when…

Q: Which one below is true for thermoplastic polymers? * O They do not soften when heated and do not…

A: Thermoplastic polymer are those polymer which can be reshape on applying heat. On the other hand…

Q: You are designing a Kevlar fibre - vinyl composite with a Young's Modulus of 20 GPa. The material is…

A: A continuous and oriented fiber composite may be loaded in the transverse direction; that is, the…

Q: 2. Determine the longitudinal elastic modulus of interphase, E¡ assuming the interphase thickness is…

A:

Q: Stress (0) STRESS-STRAIN BEHAVIOR OF POLYMERS Brittle Plastic Tough & Strong Plastic Hard & Tough…

A: Brittle plastic: As the name suggested it will be brittle in nature with negligible plastic…

Q: On the basis of fiber length and orientation, which of the following results to an 'isotropic'…

A: in fiber reinforcement, If we want unidirectional property (homogeneous) we should use continuous…

Q: Give some examples of commercial products which are laminar composite structures

A: This question is based on the concept of laminar composite Structure.

Q: 1) Assume that a lamina is made using glass fiber and epoxy with the following properties: E = 74…

A:

Q: In a polymer-ceramic composite, the volume fraction of the ceramic is 0.92. The ceramic is 4.5 times…

A: The weight percent of ceramic is to be calculated.  Which is given as  %wc = (wc x100) /(wc + wp)…

Processing of Polymer Matrix Composites

The polymer matrix composite is described as a composite material that contains some polymer in the form of either fibers or powder. Polymer matrix composites are also known in short as PMC's.