Composites
Elastic modulus of carbon fibers is 260 GPa and the elastic modulus of titanium is 110 GPa. Design a carbon fiber reinforced titanium composite with longitudinal continuous fibers which has a longitudinal elastic modulus of 140 GPa. What is the volume fraction of fibers in percentage? Write your answer without the percentage symbol.
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QUESTION 1 A semi-crystalline nylon with a degree of crystallinity of 25% has a density of 1.5 g/cm^3. Nylon has a crystalline density of 1.8 g/cm^3. What is its amorphous density in grams per centi...
QUESTION 1 A semi-crystalline nylon with a degree of crystallinity of 25% has a density of 1.5 g/cm^3. Nylon has a crystalline density of 1.8 g/cm^3. What is its amorphous density in grams per centimeters cubed? 1 points QUESTION 2 Which defect is NOT common between metals and polymers? tie molecules vacancies screw dislocations interstitial defects 0.5 points QUESTION 3 Which one is not a characteristic of a plastic polymer? a. Low stress but very large strains b. Tensile strength...
In an aligned and continuous carbon fiber-reinforced nylon 6,6 composite, the fibers are to carry 94...
In an aligned and continuous carbon fiber-reinforced nylon 6,6 composite, the fibers are to carry 94 % of a load applied in the longitudinal direction. Modulus of Elasticity [GPa(psi)] Tensile Strength [MPa(psi)] Carbon fiber 260 (37 ×106) 4000 (5.8 ×105) Nylon 6,6 2.8 (4.0 ×105) 76 (11,000) (a) Using the data provided, determine the volume fraction of fibers that will be required. (b) What will be the tensile strength of this composite? Assume that the matrix stress at fiber failure...
Q4 Acomposite consists of 65% polyester resin is reinforced by continuous and aligned glass fibers. The modulus elasticity of hardened resin is 4 0 GPa and the modulus elasticity of the ibers la...
Q4
Acomposite consists of 65% polyester resin is reinforced by continuous and aligned glass fibers. The modulus elasticity of hardened resin is 4 0 GPa and the modulus elasticity of the ibers la 52.0 GPa. Compute: a. The overall modulus elasticity of composite in the longitudinal direction parallel 04. to fiber direction b. The load carried by each matrix and iber phase, If uniaxial srss of 50 MPa is applied in longitudinal direction on the 250 mm2 cross-sectional area. c....
For a continuous and aligned fiber-reinforced composite, the modulus of elasticity in the longitudinal directions is...
For a continuous and aligned fiber-reinforced composite, the modulus of elasticity in the longitudinal directions is 39.4 GPa. If the volume fraction of fibers is 0.60 and the modulus of elasticity of matrix phase is 2.67 GPa, determine the modulus of elasticity of the composite in transverse direction. O 6.28 GP 4.25 GP 4.37 GPa O 6.40 GPS
H based carbon fiber containing a known amount of single walled 5. Consider a pitc Sartbon nanotu...
h based carbon fiber containing a known amount of single walled 5. Consider a pitc Sartbon nanotubes (SWNT), By adding small amounts of single walled carbon nanotubes SWNT) to the pitch prior to fiber pulling, the elastic fibers can be i the following questions a. (10 points) Estimate the elastic modulus for both the 1% and 5% SWNT loaded carbon fibers. modulus of the pitch based carbon ncreased. Use the figure below and the other information (given) to answer 700...
2. Consider unidirectionally reinforced glass/epoxy composites. The fibers are continuous and 60% by volume. The tensile...
2. Consider unidirectionally reinforced glass/epoxy composites. The fibers are continuous and 60% by volume. The tensile strength of glass fibers is 1 GPa and the Young's modulus is 70 GPa. The tensile strength of the epoxy matrixis 60 MPa and its Young's modulus is 3GPa. Compute the Young's modulus and the tensile strength of the composite in the longitudinal direction.
1. A fishing rod is made of fiberglass/epoxy composites with a circular cross R. The volume...
1. A fishing rod is made of fiberglass/epoxy composites with a circular cross R. The volume fraction of the continuous filaments in the composite is os continuous filaments in the composite is 0.5 and each fiber the elastic modulus of the fiber is 10 Msi and the matrix has a radius r. Suppose R = 1000r, the elastic modulus of the fiber is 10 is 0.5 Msi. The ultimate strength of the fiber is 50 ksi. (a) Calculate the number...
Problem 8 10 pts) A continuous and aligned fiber-reinforced composite part has cross sectional area of 300 mm2 and consists of35 vol% glass fibers and 65 vol% of a nylon 6,6 matrix. If a longitud...
Problem 8 10 pts) A continuous and aligned fiber-reinforced composite part has cross sectional area of 300 mm2 and consists of35 vol% glass fibers and 65 vol% of a nylon 6,6 matrix. If a longitudinal tensile load of 50kN is applied to the composite, determine (a) the longitudinal modulus of elasticity of the composite, (b) the longitudinal strain in the composite, (c) the stress in each phase (fiber and matrix), and (d) the magnitude of the load carried by each...
ourses/72682/quizzes/193252/take/questions/3398367 Summet/Winter- c SPANISH Periodic Table of th. email. JPG to PDF - Conve. Easy to...
ourses/72682/quizzes/193252/take/questions/3398367 Summet/Winter- c SPANISH Periodic Table of th. email. JPG to PDF - Conve. Easy to use Online.. Good Luck! Question 3 10 pts For a continuous and aligned fiber-reinforced composite, the modulus of elasticity in the transverse direction is 4.29 GPa. If the volume fraction of fibers is 0.45 and the modulus of elasticity of matrix phase is 2.55 GPa, determine the modulus of elasticity of composite in longitudinal direction. 9.72 GPa 25.76 GP 5.78 GP 12.99 GPS Next...
For a continuous carbon fiber Em=3 GPa and Ef=300 GPa, find the minimum volume fraction of...
For a continuous carbon fiber Em=3 GPa and Ef=300 GPa, find the minimum volume fraction of fiber needed to achieve a composite modulus equal to that of titanium, 225 GPa. What would be the transverse modulus?
Q4
Acomposite consists of 65% polyester resin is reinforced by continuous and aligned glass fibers. The modulus elasticity of hardened resin is 4 0 GPa and the modulus elasticity of the ibers la 52.0 GPa. Compute: a. The overall modulus elasticity of composite in the longitudinal direction parallel 04. to fiber direction b. The load carried by each matrix and iber phase, If uniaxial srss of 50 MPa is applied in longitudinal direction on the 250 mm2 cross-sectional area. c....
For a continuous and aligned fiber-reinforced composite, the modulus of elasticity in the longitudinal directions is 39.4 GPa. If the volume fraction of fibers is 0.60 and the modulus of elasticity of matrix phase is 2.67 GPa, determine the modulus of elasticity of the composite in transverse direction. O 6.28 GP 4.25 GP 4.37 GPa O 6.40 GPS
h based carbon fiber containing a known amount of single walled 5. Consider a pitc Sartbon nanotubes (SWNT), By adding small amounts of single walled carbon nanotubes SWNT) to the pitch prior to fiber pulling, the elastic fibers can be i the following questions a. (10 points) Estimate the elastic modulus for both the 1% and 5% SWNT loaded carbon fibers. modulus of the pitch based carbon ncreased. Use the figure below and the other information (given) to answer 700...
2. Consider unidirectionally reinforced glass/epoxy composites. The fibers are continuous and 60% by volume. The tensile strength of glass fibers is 1 GPa and the Young's modulus is 70 GPa. The tensile strength of the epoxy matrixis 60 MPa and its Young's modulus is 3GPa. Compute the Young's modulus and the tensile strength of the composite in the longitudinal direction.
1. A fishing rod is made of fiberglass/epoxy composites with a circular cross R. The volume fraction of the continuous filaments in the composite is os continuous filaments in the composite is 0.5 and each fiber the elastic modulus of the fiber is 10 Msi and the matrix has a radius r. Suppose R = 1000r, the elastic modulus of the fiber is 10 is 0.5 Msi. The ultimate strength of the fiber is 50 ksi. (a) Calculate the number...
Problem 8 10 pts) A continuous and aligned fiber-reinforced composite part has cross sectional area of 300 mm2 and consists of35 vol% glass fibers and 65 vol% of a nylon 6,6 matrix. If a longitudinal tensile load of 50kN is applied to the composite, determine (a) the longitudinal modulus of elasticity of the composite, (b) the longitudinal strain in the composite, (c) the stress in each phase (fiber and matrix), and (d) the magnitude of the load carried by each...
ourses/72682/quizzes/193252/take/questions/3398367 Summet/Winter- c SPANISH Periodic Table of th. email. JPG to PDF - Conve. Easy to use Online.. Good Luck! Question 3 10 pts For a continuous and aligned fiber-reinforced composite, the modulus of elasticity in the transverse direction is 4.29 GPa. If the volume fraction of fibers is 0.45 and the modulus of elasticity of matrix phase is 2.55 GPa, determine the modulus of elasticity of composite in longitudinal direction. 9.72 GPa 25.76 GP 5.78 GP 12.99 GPS Next...
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