Materials For Civil And Construction Engineers In Si Units
4th Edition
ISBN: 9781292154404
Author: Michael S Mamlouk
Publisher: PEARSON
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Chapter 11, Problem 11.20QP
To determine
The modulus of elasticity of the carbon-epoxy composite under isostrain condition and the percentage of load carried by the carbon fibers.
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Calculate the modulus of elasticity of carbon–epoxy composite under isostrain condition if the composite consists of 40% carbon fibers and 60% epoxy by volume. Also, calculate the percentage of load carried by the carbon fibers.The moduli of elasticity of the carbon fibers and the epoxy are 350 and 3.5 GPa, respectively. Repeat for 35% carbon fibers by volume.
Calculate the modulus of elasticity of carbon–epoxy composite under isostrain condition if the composite consists of 35% carbon fibers and 60% epoxy by volume. Also, calculate the percentage of load carried by the carbon fibers. The moduli of elasticity of the carbon fibers and the epoxy are 350 and 3.5 GPa, respectively
Calculate the modulus of elasticity of carbon–epoxy composite under isostrain condition if the composite consists of 40% carbon fibers and 60% epoxy by volume. Also, calculate the percentage of load carried by the carbon fibers.The moduli of elasticity of the carbon fibers and the epoxy are 350 and 3.5 GPa, respectively.
Chapter 11 Solutions
Materials For Civil And Construction Engineers In Si Units
Ch. 11 - Prob. 11.1QPCh. 11 - Prob. 11.2QPCh. 11 - Prob. 11.3QPCh. 11 - Prob. 11.4QPCh. 11 - Prob. 11.5QPCh. 11 - Prob. 11.6QPCh. 11 - Prob. 11.7QPCh. 11 - Prob. 11.8QPCh. 11 - Prob. 11.9QPCh. 11 - What are the functions of aggregate used in...
Ch. 11 - Prob. 11.11QPCh. 11 - Prob. 11.12QPCh. 11 - What are the benefits of adding dispersed steel...Ch. 11 - Getting measurements from Figure 11.20, determine...Ch. 11 - Three 6 in. 12 in. concrete cylinders with...Ch. 11 - Prob. 11.16QPCh. 11 - Prob. 11.17QPCh. 11 - Prob. 11.18QPCh. 11 - Prob. 11.19QPCh. 11 - Prob. 11.20QPCh. 11 - Prob. 11.21QPCh. 11 - Prob. 11.22QPCh. 11 - Prob. 11.23QPCh. 11 - Prob. 11.24QPCh. 11 - Prob. 11.25QPCh. 11 - Prob. 11.26QPCh. 11 - Prob. 11.27QPCh. 11 - Prob. 11.28QPCh. 11 - Prob. 11.29QPCh. 11 - Prob. 11.30QPCh. 11 - A circular FRP composite rod with continuous and...
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- In Example Problem 12.1, a uniaxial composite material is made into a circular rod Vbith a 1.27-cm diameter from 70 volume percent continuous carbon fibers and 30 volume percent epoxy. The rod is subject to an axial force of 100,000 N. The composite matcrial in Example Problem 12.1 is to be replaced with a less expensive composite made of 70 volume percent continuous E-glass fibers and 30 volume percent epoxy. The elastic moduli are 5 GPa for the epoxy resin and 72.4 GPa fos the E-glass. (a) Compare the elastic modulus, composite strain, fiber and matrix stresses, and density of this composite with the carbon epoxy composite in Example Problem 12.1. Usc the density of UHM carbon, and assume the density of the epoxy is 1.2g/cm3 . (b) Can both the E-glass fiber and matrix withstand the applied force?arrow_forwardCalculate the modulus of elasticity of carbon–epoxy composite under isostrain condition if the composite consists of 40% carbon fibers and 60% epoxy by volume. Also, calculate the percentage of load carried by the carbon fibers.The moduli of elasticity of the carbon fibers and the epoxy are 350 and 3.5 GPa, respectively. Repeat under isostress condition.arrow_forwardWhat is the volume fraction of the reinforcement in a polymer matrix composite using epoxy and glass fiber if the volume fraction of glass fiber is 0.30?Ms. A wanted to make a polymer matrix composite using epoxy and glass fiber. The elastic moduli of epoxy and glass fiber are 3 and 70 GPa, respectively. If she wants to incorporate 0.30 volume fraction of glass fiber, determine the elastic modulus (GPa) of the composite in an iso-strain condition. What is the reinforcement in a cement?arrow_forward
- For the composite area shown, calculate the moment of inertia about X and Y axesarrow_forward"A fiber-reinforced polymer composite under isostrain condition consists of 35% fibers and 65% polymer by volume. The moduli of elasticity of the fibers and the polymer are 50 * 106 psi and 0.5 * 106 psi, respectively, and the Poisson’s ratios of the fibers and the polymer are 0.25 and 0.41, respectively. Calculate the following:a. modulus of elasticity of the composite.b. percentage of load carried by the fibersc. Poisson’s ratio of the composite" Repeat for 45% fibers by volume.arrow_forwardPlease explain about modulus of elasticity of the composite versus fiber volume fraction.arrow_forward
- aa) What is the composite area’s moment of inertia based on axis Xo?ab) What is the composite area’s moment of inertia based on axis Yo?ac) What is the composite area’s moment of inertia based on X-axis?arrow_forwardDetermine the moment of inertia of the composite area about the x axis. Set a = 670 mm , b = 240 mm , h = 130 mm , r = 85 mm . Express your answer with the appropriate units.arrow_forward~Three decimal places. Find the Moment of inertia of the composite section about the x-axis if the x-axis were lowered one inch (1 inch) below the present location.arrow_forward
- A fiber-reinforced polymer composite under isostrain condition consists of 35% fibers and 65% polymer by volume. The moduli of elasticity of the fibers and the polymer are 50 * 106 psi and 0.5 * 106 psi, respectively, and the Poisson’s ratios of the fibers and the polymer are 0.25 and 0.41, respectively. Calculate the following:a. modulus of elasticity of the composite.b. percentage of load carried by the fibersc. Poisson’s ratio of the compositearrow_forwardA fiber-reinforced polymer composite under isostrain condition consists of 35% fibers and 45% polymer by volume. The moduli of elasticity of the fibers and the polymer are 260 GPa and 3.4 GPa, respectively, and the Poisson’s ratios of the fibers and the polymer are 0.25 and 0.41, respectively. Calculate the following:a. modulus of elasticity of the composite.b. percentage of load carried by the fibersc. Poisson’s ratio of the compositearrow_forwardDetermine the y-bar centroid of the composite figure shown. Where: y = 20mm and x = 10 mmarrow_forward
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