Question 5. A metal-matrix composite (MMC) is made of a 6061-Al alloy matrix and continuous boron fibers. The boron fibers are produced with a 15.5 um diameter tungsten-wire core that is coated with boron to make a final 107 µm diameter fiber. A unidirectional composite is made with 63 vol % of the boron fibers in the Al 6061 matrix. Assuming the law of mixtures applies to isostrain conditions, calculate the tensile modulus of the composite in the direction of the fibers. Data are EB = 370 GPa, Ew = 410 GPa, and EAI = 70.4 GPa.

Question 5. A metal-matrix composite (MMC) is made of a 6061-Al alloy matrix and continuous boron fibers. The boron fibers are produced with a 15.5 um diameter tungsten-wire core that is coated with boron to make a final 107 µm diameter fiber. A unidirectional composite is made with 63 vol % of the boron fibers in the Al 6061 matrix. Assuming the law of mixtures applies to isostrain conditions, calculate the tensile modulus of the composite in the direction of the fibers. Data are EB = 370 GPa, Ew = 410 GPa, and EAI = 70.4 GPa.

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

Similar questions

Find five examples of products made of plasticizedPVC and five made of unplasticized PVC. How does thechoice of plasticized vs. unplasticized PVC match theengineering requirements of the products in each category?
Carbon fibers are used to reinforce with the matrix in the fiber-reinforced polymers. Select one: True False
Hide blocks Iron (II) oxide (FeO) is a ceramic that has the same crystal structure as NaCl. Given: R(Fe2)=0.087 nm and R(0²)-0.132 Calculate the lonic Packing Factor (IPF) of FeO? Select one: O a. 0.12 Ob.0.41 Oc. 0.21 O d. 0.74 Oe. 0.14 O£.0.47 O g. 0.59 O h.0.51 10:14 PM 15-Apr-2021
Q7. Explain in general terms, why many polymers and some ceramic glasses have an amorphous or semicrystalline structure.
Explain (i) thermal conductivity (ii) composite wall (iii) diffusion
1. For a load applied in the direction of fiber, assuming equal deformation in the components, the two phases are viewed as being defomed in parallel. Derive an equation relating the elastic modulus of the composites. F
Q1: The fibers in a unidirectional lamina have a diameter of 12 um and weight fraction of 60%. The density of fibers is 1.5 of the density of the epoxy. Find the center-to-center spacing of the fibers if: 1. Packed in a square array in the epoxy matrix. 2. Packed in a triangular array in the epoxy matrix.
24)
1) Assuming that the moduli and volume fractions of fiber and matrix materials are known, obtain the rule of mixtures in order to calculate the longitudinal Young's (elasticity) modulus of a unidirectional lamina by use of iso-strain assumption
A large-particle composite consisting of tungsten particles within a copper matrix is to be prepared. If the volume fractions of tungsten and copper are 0.84 and 0.16, respectively, estimate the upper limit for the specific stiffness of this composite given the data that follow. i Copper Tungsten GPa Specific Gravity Modulus of Elasticity (GPa) 8.9 19.3 110 407
a dry, 2.4 den, mature wool fiber has reached its maximum tenacity value. How many grams would it take to rupture such fiber when dry?
For a glass/epoxy lamina with a 70% fiber volume fraction using the properties in the tables provided below (a) Find the ultimate tensile strength. (b) Find the minimum and critical fiber volume fractions related to (a). (c) Find the compressive strength when the matrix undergoes extension mode and when the matrix undergoes shear mode, which one controls the compressive failure? Property Axial modulus Transverse modulus Axial Poisson's ratio Transverse Poisson's ratio Shear modulus Axial tensile strength Axial compressive strength Transverse tensile strength Transverse compressive strength Shear strength Epoxy Glass Units 3.4 85 GPa 3.4 85 GPa 0.3 0.20 0.3 0.20 1.308 35.42 GPa 72 1550 MPa 102 1550 MPa 72 1550 MPa 102 1550 MPa 34 35 MPa