An epoxy (E=2.7GPA) is reinforced with carbon fiber with module of elasticity equal to 260 GPa. Design a composite with a longitudinal elastic modulus of 160 GPa. Select one: a. Vm = 70 vol%, Vf = 30 vol% b. Vm = 40 vol%, Vf = 50 vol% c. Vm = 39 vol%, Vf = 61 vol% d. Vm = 62 vol%, Vf = 38 vol%

An epoxy (E=2.7GPA) is reinforced with carbon fiber with module of elasticity equal to 260 GPa. Design a composite with a longitudinal elastic modulus of 160 GPa. Select one: a. Vm = 70 vol%, Vf = 30 vol% b. Vm = 40 vol%, Vf = 50 vol% c. Vm = 39 vol%, Vf = 61 vol% d. Vm = 62 vol%, Vf = 38 vol%

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: A composite cantilevered rectangular beam with a length of 1 meter. Height = 65 mm, width = 25 mm.…

Q: Q4: A unidirectionally reinforced glass fiber/epoxy composite. The volume fraction of the fibers is…

A: Given: Let us consider the given data, Volume fraction for fiber=60%…

Q: The stress-strain curve below is for an epoxy-carbon composite: Stress Strain Curve Composites 2.00…

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

Q: Izod impact strength average of linear molecules polyethylene is- ---- J/m^2 * 549 no break 1070 The…

A: Solution: Shore A hardness or Durameter test is the method of determine the hardness of the softer…

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: Q1: E-glass fibers reinforced epoxy matrix to fabricate a composite part. The volume fraction of…

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

Q: QUESTION 5 The best fiber-reinforced composite in terms of tensile strength is: Continuous and…

A: fiber reinforced composites are basically are those engineering materials which has very high…

Q: An aligned and continuous glass fiber-reinforced epoxy composite consisting of 55 vol% glass fibers…

A: Given Data Elastic moduli, Eglass=165 GPa=Efiber Elastic moduli, Eepoxy=5.7 GPa=Ematrix…

Q: What two changes occur with regard to EAC behavior of PVC and polyethylene water and gas…

A: Polyvinyl chloride or the PVC is made by adding plastic and vinyl, so it is named polyvinyl…

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

Q: 4- Mechanical properties of fiber-reinforced composites depend on (a) All the following (b)…

A: Disclaimer: please upload only one question at one time. The last numerical question is upload…

Q: Q#04 (a) : What are composite materials? Discuss the functions of Re-inforcing agent and matrix…

Q: 16.D5 It is necessary to fabricate an aligned and dis- O continuous carbon fiber-epoxy matrix…

Q: When choosing a polymer for fatigue crack propagation resistance, would you typically select an…

A: Semi molecular polymers have more endurance limit in crack propagation. One explanation is the…

Q: A continuous and aligned fiber-reinforced composite is to be produced consisting of 30 vol% aramid…

A: (a) Determination of Young Modulus in the longitudinal direction,…

Q: 0.1: A composite Materials has a longitudinal modulus of clasticity of 18.2 GPa. Containing…

Q: A continuous and aligned fiber-reinforced composite is to be produced consisting of 30% vol aramid…

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: Density (g/cm) Material Modulus Tensile strength (psi) of Elasticity (psi) Fibers 2.36 55,000,000…

A: Given: The density of the fiber is ρf=2.36 g/cm3 The density of the aluminum is ρA=2.70 g/cm3. The…

Q: A continuous and aligned fiber-reinforced composite is to be produced consisting of 30 vol% aramid…

A: Given, Volume fraction of Aramid fiber = Va = 30% = 0.3 Modulus of elasticity of Aramid fiber = Ea =…

Q: A continuous and aligned CFRP composite is subjected to an external tensile load of 35,000 N in the…

Q: b. i. Calculate the tensile modulus of elasticity of a unidirectional Kevlar-49 fibers epoxy…

A: Given:Vm=0.63Vf=0.37Em=189.8 GPaEf=3.8 GPa

Q: Glass fibres provide longitudinal reinforcement for a nylon material subject to tensile load. The…

A: Youngs Modulus: The Young modulus is one of the properties of a body, which is equal to the ratio of…

Q: A continuous and aligned fiber-reinforced composite is to be produced consisting of 30% vol aramid…

A: Write the give data. Ef=121.68 GPaVf=0.30Em=3.42 GPaVm=0.70

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: A high-density polyethelene (HDPE) [E = 780 MPa; ν = 0.46] rod has a diameter of 100 mm before load…

A: Given data as per question E = 780 MPa ν = 0.46 diameter of rod =100 mm Final diameter of rod…

Q: a (ksi) 3–23. By adding plasticizers to polyvinyl chloride, it is possible to reduce its stiffness.…

A: Given Data Axial load is : P=20 kip Length of rod is : L=5 in Stretch in rod is : ∆L=14=0.25 in…

Q: It is known that a unidirectional composite lamina has the reduced stiffness matrixin its fiber…

A: The reduced stiffness matrix Q=156303120004 Gpa=Q11Q12Q16Q12Q22Q26Q16Q26Q66

Q: able 11.3. The engineering constants in Example 11.1 E, (GPa) E2 (GPa) G12 (GPa) V12 Nominal (v =…

A: Given dataVf=0.6Vm=0.4E1=148GPaE2=9.65GPaG12=4.55V12=0.3we know thatE1=VfEf+VmEm148=0.6Ef+0.4Em…

Q: A second unidirectional composite also comprises aligned continuous fibres in an epoxy matrix but…

Q: fiber orientation in composite material is (which) I. one-dimensional continuous fibers II. planar…

A: Since you have posted multiple questions and did not defined which question is needed to be solved.…

Q: A composite has 20 vol% fibres with Ef = 150 GPa in a matrix Em = 30 GPa. If subjected to load…

A: The matrix is responsible for binding the fibre reinforcement, transferring loads between fibres,…

Q: A composite has 20 vol% fibres with E = 150 GPa in a matrix Em = 30 GPa. The matrix fails first at a…

A: The given problem belongs to composite materials, and in the composites if either the matrix or the…

Q: a) Determine the modulus of elasticity of the fibers. b) Estimate their modulus of toughness. c)…

A: The ratio between the stress acting on an object to the strain generated due to the load applying on…

Q: A continuous and aligned fibrous reinforced composite having a cross-sectional area of 975 mm, then…

Q: Polyurethane are classified as Elastomer materials

Q: 16.12 In an aligned and continuous carbon fiber- reinforced nylon 6,6 composite, the fibers are to…

A: Given Data: The load carried by the fibers in the longitudinal direction, Ff=0.97

Q: Calculate five factors from stress strain curve for polybutadiene? 0.045

A: Given Stress strain graph To find Five factors Stress strain graph is plotted, when a sample is…

Q: An epoxy (E = 3.25 GPa) is reinforced with 55 vol% E-glass (E = 79 GPa). The fibres are continuous…

Q: Q1: E-glass fibers reinforced epoxy matrix to fabricate a composite part. The volume fraction of…

A: Given:Vf=VmEf=55*Em

Q: a) Composite density b) Composite stiffness parallel to the fibre orientation c) Composite stiffness…

Q: Which one of the following is not the disadvantages of polymers

A: 8. Which one of the following is not the disadvantages of polymers Answer: c. High Elastic modulus

Q: Which of the following will be same in both the materials in a composite body, consisting of two…

A: As Youngs Modulus is property of a material... So, It cannot be same for a composite material…

Q: Draw the repeat (mer) unit for the following thermoplastics: PP, PA, PMMA, PTFE, SBS,

A: The repeat unit of PP The repeat unit of PA

Q: Compute the longitudinal tensile strength of an aligned glass fiber-epoxy matrix composite in which…

A: This question is related to the glass fiber epoxy matrix composites, Let's determine the critical…

Concept explainers

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.

Question

An epoxy (E=2.7GPA) is reinforced with carbon fiber with module of elasticity equal to 260 GPa. Design a composite with a longitudinal elastic modulus of
160 GPa.
Select one:
a. Vm = 70 vol%, Vf = 30 vol%
b. Vm = 40 vol%, Vf = 50 vol%
C. Vm = 39 vol%, Vf = 61 vol%
d. Vm = 62 vol%, Vf = 38 vol%

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

What fiber fraction would be required for a composite with titanium fibers in a polycarbonate matrix (E = 2.5 GPa) to have the fibers handle 85% of a longitudinal tensile load? (Titanium Ef = 116 GPa )
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
The compressive strength of aramid fiber is about one-eighth of its tensile stress. Estimate the smallest diameter of a rod on which the aramid fiber can be wound without causing kinks, etc. on its compression side. How to find the diameter based on bending moment and formula, MR = EI?
Q#04 (a) : What are composite materials? Discuss the functions of Re-inforcing agent and matrix materials. (b) : Name different types of advanced fibres.
The compressive strength of aramid fiber is about one-eighth of its tensile stress. Estimate the smallest diameter of a rod on which the aramid fiber can be wound without causing kinks, etc. on its compression side.
If the tensile strength of the Kevlar 49 fibers is 3.8 GPa and that of the epoxy resin is 75.9 MPa, calculate the tensile strength of the composite material in Q3b(i). Calculate the fraction of load carried by the Kevlar 49.
Boron coated with SiC reinforced aluminum containing 40 vol.% fibers is animportant high temperature, light weight composite material. Estimate the density, modulus of elasticity, and tensile strength of composite parallel to the fiber axis. Also estimate the modulus of elasticity of composite perpendicular to the fibres.
Glass fibres provide longitudinal reinforcement for a nylon material subject to tensile load. The fibre diameter is 20 μm and the volume fraction is 0.45. (Take Young’s modulus of glass fibres as 70 000 MPa and nylon as 2800 MPa)(i)Calculate the Young’s modulus of composite(ii)Determine the tensile strength in the glass fibre if the tensile strength of the composites and matrix is 14 MPa and 11.8 MPa, respectively
Estimate the transverse modulus (ET), of the glass-epoxy composite with a fiber volumefraction of 25%. Modulus of elasticity of glass fiber and epoxy is 70 GPa, and 3.5 GPa,respectively. Assume that fibers have a circular cross-section.
A high-density polyethelene (HDPE) [E = 780 MPa; ν = 0.46] rod has a diameter of 100 mm before load P is applied. In order to maintain certain clearances, the diameter of the rod must not exceed 101 mm when loaded. What is the largest permissible compressive load P that can be applied to the HDPE rod?
Boron coated with SiC reinforced aluminium containing 40 vol.% fibers is animportant high temperature, light weight composite material. Estimate the density,modulus of elasticity and tensile strength of composite parallel to the fiber axis. Alsoestimate the modulus of elasticity of composite perpendicular to the fibres.
A 0 degree lamina of glass fiber-epoxy 3501 composite with fiber arranged withmax. volume fraction of fiber in a square array is subjected to a stress σx = 50MPa at theta =20 degrees. What are the resulting lamina strains [ε]xy and strains[ε]12? (Apply the Halpin-Tsai correction to transverse moduli and shear moduli)