Determine maximum stress and modulus of elasticity, Mechanical Engineering

Determine maximum stress and modulus of elasticity:

 A composite of glass fibres and epoxy has all of fibres laid along the length and is needed to carry a stress of 12 MPa. The limiting stress carried by fibre & epoxy are respectively, σf = 2400 MPa, and σm = 80 MPa. The volume ratios and modulii of elasticity are explained below :

V f  = 0.7,  Vm = 0.3,  E f  = 72 MPa,         Em = 3 MPa

Determine maximum stress the composite might carry in the direction of fibres & the modulus of elasticity.

Solution

The stress that composite can carry

σc = V f  σ f + Vm σm

= 0.7 × 2400 + 0.3 × 80

= 1680 + 24 = 1704 MPa

Modulus of elasticity of composite

E = V f E f  + Vm  Em

= 0.7 × 72 + 0.3 × 3

= 50.4 + 0.9 = 51.3 MPa

Posted Date: 1/22/2013 1:41:04 AM | Location : United States







Related Discussions:- Determine maximum stress and modulus of elasticity, Assignment Help, Ask Question on Determine maximum stress and modulus of elasticity, Get Answer, Expert's Help, Determine maximum stress and modulus of elasticity Discussions

Write discussion on Determine maximum stress and modulus of elasticity
Your posts are moderated
Related Questions
Q. What is Extrusion defects? • Surface cracking - When the surface of an extrusion splits. This is often caused by the extrusion temperature, friction, or speed being too high

(a) What is the function of a spark plug? (b) What are the types of spark plugs? Point out the differences between them. (c) Describe the construction of a spark plug with th

what is the working princile of high preesure die casting process

Boiler efficiency and heat losses, heat Balence sheet, boiler draught, high pressure boiler

The first successful numerical machine tool was developed at MIT in the year:

Solve the following equation by Gauss elimination Method : 2x + y + z = 10, 3x + 2y + 3z = 18; x +4y +9z = 16 Solve by Gauss-Seidal iteration method: 20x + y - 2z = 17; 3x

Metallurgy of Electron Beam Welding EBW is capable of joining a variety of materials in a broader thickness range than any other fusion welding process. This is being in

Elastic Limit: Sol. : When external force acts on the body, the body tends to undergo some deformation. If external force is removed and body comes back to its original shap

What is the Maximum bolt bending moment in a group for four equally spaced bolts?

temperature lapse rate differentiation integration...