Find out the modulus of elasticity, Mechanical Engineering

Find out the modulus of elasticity:

A unidirectional FRP is produced with fibre volume ratio of 60%. The density of fibre is 1480 kg/m3 and that of matrix is 1200 kg/m3. Calculate the weight percentages of matrix and fibre and the density of the composite. Also find out the modulus of elasticity of composite if Ef = 70 MPa, Em = 3 GPa.

Solution

Supposed that composite has a volume of 1 m3, so that

 V f  = 0.6 m3               and           Vm = 0.4 m3

Mass of fibre = 1480 × 0.6 = 888 kg

And mass of matrix = 1200 × 0.4 = 480 kg

Mass of composite = 888 + 480 = 1368 kg

Density of composite = 1368 kg/1 m3 = 1368 kg/m3

Weight % of fibre = (888 /1368)  × 100 = 64.9%

Weight % of matrix = 100 - 64.9 = 35.1

Modulus of elasticity of composite

                  E = V f E f  + Vm  Em

              = 0.4 × 3 + 0.6 × 70

             E = 43.2 MPa

Posted Date: 1/22/2013 1:39:55 AM | Location : United States







Related Discussions:- Find out the modulus of elasticity, Assignment Help, Ask Question on Find out the modulus of elasticity, Get Answer, Expert's Help, Find out the modulus of elasticity Discussions

Write discussion on Find out the modulus of elasticity
Your posts are moderated
Related Questions
(a) What are the basic conditions for a body to be in state of equilibrium? (b) Two steel cylinders of similar diameter are supported in a rectangular vessel. The width of the v

Loosening a Part with Multiple Fasteners: Loosening a part with multiple fasteners should be done from the outside to inside in a criss-cross pattern, loosening the small fastener

Which software is worth in learning for upcoming technologies in mechanical field?

The differential manometer (shown below) is used to measure the pressure difference between two vessels. Derive the equation for the pressure difference (pA - pB) in terms of the l

According to the explanation, why reverse will happen in the case of cantilevers? ( that is, tensile stresses will be induced in upper layers and compressive stresses will be induc

Q. Skid assemblies and modular structures? This specification describes parameters for the design, fabrication, materials and installation of the structural steel part of skid

Q. Use of high temperature material Flare Tips? A variety of high temperature alloys (typically stainless steels and/or nickel-base alloys) are employed in the construction of

define prandtl''s stress function

1.Calculate the heat-removal factor for a collector having an overall heat-losscoefficient of 6 W/m2K and constructed of aluminum fins and tubes. Tube-to-tube centered distance is

General Electric Research Laboratory: Philip Kennicott joined the General Electric Research Laboratory in the year 1961 where he made contributions in the fields of x-ray crys