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
Process capability Process capability which is a measurement with respect to the inherent precision of a manufacturing process has two significant elements, i.e. process facto

Cell Control And Modeling   Various numbers of modeling systems and cell control have been developed to date. Researchers have worked many on three broad regions: scheduling;

Throttle Free Play Adjustmen: A smooth operation of the throttle ensures proper acceleration of the vehicle according to the requirement of the rider. If the throttle cable is kin

Maintenance of Bridges and Culverts: Careful inspection of bridges and culverts at periodic intervals can detect cracks, foundation settlement, scour, malfunction of bearings

An inside cylinder locomotive has its cylinder centre lines 0.70m apart and has a stroke of 0.60m. Rotating mass per cylinder = 150kg Distance between wheel Centre lines = 1.

Problem You are playing tetherball because you are seven years old and you have nothing better to do.  If the tetherball has a mass of 1 kg and the rope is 1.5 m long and can w


What is scale formation in case of a boiler


The basic aim of synthesis in design process is to provide information which can tell you how to improve the design. In general the synthesis process gives many alternatives of