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 E_f = 70 MPa, E_m = 3 GPa.

Solution

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

 V _f  = 0.6 m³               and           V_m = 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  + V_m  E_m

              = 0.4 × 3 + 0.6 × 70

             E = 43.2 MPa

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

Ask an Expert

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

Write your message here..

Related Questions

Strength of materials advanced, need help with reports on thin thick and co... need help with reports on thin thick and combined cylinder theory

Determine the amount of air circulated per minute, An air refrigerator oper... An air refrigerator operates between the pressure limits of 1 bar and 5 bar. The temperature of the air entering the compressor and expansion cylinder are 15 o C and 25 o C respect

Magnetic alloy steels, Magnetic Alloy Steels: These steels are divide... Magnetic Alloy Steels: These steels are divided into two sets. Such which retain their magnetism and that which do not. The steels which retain their magnetism are termed as

Rails - flat footed rail, Rails: Rails are the part of the Permanent ... Rails: Rails are the part of the Permanent Way on which the wheels of the train travel. The rails also maintain the gauge separation. Rails have to possess the following d

Lest count, what is the least count of following instrument? vernier calipe... what is the least count of following instrument? vernier caliper micrometer bevel protractor dial

Limitations of carnot vapour cycle, Limitations of Carnot vapour cycle: ... Limitations of Carnot vapour cycle: This equation dignifies that the wider the temperature range, the more efficient is the cycle. ( a )T 3 : In practice T 3 cannot be r

Painting of structural components of skid, Q. Painting of structural compon... Q. Painting of structural components of skid? Sandblasting and priming shall be carried out prior to assembly, and shall include all bolt holes, flange faces, etc. Flange gaske

Multiview Projections, I''m having trouble with some drawing questions, whe... I''m having trouble with some drawing questions, where I am given two orthogonal projections (front and side view) of an unknown 3D object, I have to draw the top view using a mite

What do you mean by turret nozzle, Q. What do you mean by turret Nozzle? ... Q. What do you mean by turret Nozzle? Turret Nozzle - Turret nozzles are large nozzles that can deliver large quantities of water quickly. They are used on very large fires whe

Application of hot service insulation, Q. Application of hot service insula... Q. Application of hot service insulation? Provision for the expansion of hot equipment shall include the installation of expansion springs in circumferential banding securing i