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. Table 2.11 Properties of reinforcement fibersPAN-based carbonSiCKevlarBoronCharacteristicHMHS49E glass CVDNicalon Al,O3 (W)Diameter (µm)7–107.6–8.6 128-14100–200 10–2020100–200Density (g/cm³)Young's modulus(GPa)1.951.751.452.553.32.63.952.6Parallel to fiber axis 39025012570430180379385Perpendicular tofiber axis122070Tensile strength(GPa)2.22.72.8–3.5 1.5–2.5 3.521.43.8Strain to0.51.02.2-1.8fracture (%)Coefficient ofthermalexpansion(10-6 K-1)Parallel to fiber axis -0.5–0.1 0.1–0.5 -2–54.75.77.58.3Perpendicular to7–127–12594.7fiber axis

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.

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.

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

A continuous and aligned fiber-reinforced composite having a cross-sectional area of 1200 mm² is subjected to an external tensile load. If the stresses sustained by the fiber and matrix phases are 152 and 2.27 MPa, respectively, the force sustained by the fiber phase is 72300 N, and the total longitudinal strain is 0.00143, determine the following: (a) The force sustained by the matrix phase (in N). i (b) The modulus of elasticity of the composite material in the longitudinal direction (in GPa). i N i (c) The modulus of elasticity for the fiber phase (in GPa). GPa i GPa (d) The modulus of elasticity for the matrix phase (in GPa). GPa
2. Consider a cylindrical nickel wire 0.08 in. in diameter and 1200 in. long. Calculate its elongation when a load of 300 N is applied. Assume that the deformation is totally elastic. 3. A cylindrical specimen of a metal alloy 10 mm in diameter is stressed elastically in tension. A force of 3370 Ibr produces a reduction in specimen diameter of 7 x 10* mm. Compute Poisson's ratio for this material if its elastic modulus is 100 GPa. 4. A cylindrical specimen of a hypothetical metal alloy is stressed in compression. If its original and final diameters are 20.000 and 20.025 mm, respectively, and its final length is 74.96 mm, compute its original length if the deformation is totally elastic. The elastic and shear moduli for this alloy are 105 GPa and 39.7 GPa, respectively.
19 Consider a cylindrical specimen of some hypo- thetical metal alloy that has a diameter of 10.0 mm (0.39 in.). A tensile force of 1500 N (340 lb;) produces an elastic reduction in diameter of 6.7 x 104 mm (2.64 × 10 in.). Compute the elastic modulus of this alloy, given that Poisson's ratio is 0.35.
Thank you for answering this question. Please you specify each step as soon as possible. Good Luck! Thank You. Find the maximum biaxial stress,ox= -20, oy= -30, o > 0, that one can apply to a 60° lamina of glass/epoxy. Use maximum stress theory. Strength values of glass/epoxy: (01Jult = 1062 MPa, (01Jult= 610 MPa, (02")ut = 30 MPa, (02)ult = 118 MPa, (T12)ult = 72 MPa
The stress-strain curve of a thermoset material is given in the figure below. Calculate the total strain energy at the point of fracture for a cylinder (diameter = 3mm and length = 4mm) made from this thermoset material.
For a brass alloy, the stress at which plastic deformationbegins is 345 MPa (50,000 psi), and themodulus of elasticity is 103 GPa (15.0 * 106 psi).
A sample of silicone breast implant, polydimethylsiloxane (PDMS), is placed under unconfined compression. The magnitudes of the resulting longitudinal and transverse strains have been measured to be 2.7 and 1.341, respectively. The young's modulus of the implant is 500 kPa. Calculate the shear and bulk moduli.
At an axial load of 24 kN, a 35-mm-wide by 15- mm-thick polyimide polymer bar elongates 3.0 mm while the bar width contracts 0.15 mm. The bar is 230 mm long. At the 24-kN load, the stress in the polymer bar is less than its proportional limit. Determine (a) the modulus of elasticity. (b) Poisson's ratio. (c) the change in the bar thickness. Answers: E= = V = IN Athickness= i GPa mm
Calculate the maximum diameter that an Al2O3 bar must have without deforming if it is subjected to a load of 4502.0 N and has a yield strength of 230.1 MPa
Compute the fracture stresses in MPa for internal cracks that are 6.00 cm long in a composite of Kevlar 49 in F-155 epoxy with a fracture toughness of 23.0 MPa-m1/2.
A new high stiffness plastic material has a length of 19.7 inches and a thickness of 3 mm and is being considered for use as a bone fixation plate. When subjected to a tensile load of 10000 N, the material stretches to a length of 19.88 inches. Please find the width of this material, which has a modulus of 4 GPa.
9. A compressive force of 15-N is applied to a flexible poly(vinyl chloride) (CAS# 9002-86-2) wire that is 5-m long and has a diameter of 3.6-mm. If the wire contracts by 0.5-mm, calculate the compressive modulus