Evaluate stress in fibre, Mechanical Engineering

Assignment Help:

Evaluate stress in fibre:

Example, the matrix material can be stressed to its full strength of 80 MPa, calculate the allowable % of broken fibres. What will be the stress in fibre in both the cases?

Solution

σ′ = 1200 MPa, σ′ = 80 MPa, V f= 0.7,  E f/ Em = 24

∴          x = (1200 - 80 + 0.7 (1 - 24) 80) /(1200 + 80 (1 - 24))

                = 0.2625

26.25% fibre might be broken.

The fibre stress when σ′m  = 64 MPa .

σ′f = σ′m × E f / Em

= 64 × 24 = 1536 MPa

When

σ′m = 80 MPa, σ′f = 80 × 24 = 1920 MPa

Note down that in both the cases the fibre stress is less than its strengths of 2400 MPa.

This is concluded that less broken fibres are allowable if the matrix material is permitted to be stressed to its capacity but in such case the fibre shall be subjected to higher stress.


Related Discussions:- Evaluate stress in fibre

Explain the tool signature, Explain the Tool Signature The tool angles ...

Explain the Tool Signature The tool angles have been standardized by the American standards association. The seven important elements comprise the signature of the cutting tool

Surface modeling, SURFACE MODELING: The process of modeling is built m...

SURFACE MODELING: The process of modeling is built much easier for a mathematical description of an object or at least on a part of the object might be applied. Surfaces might

Describe pendulum pump mechanism, Describe in detail the following mechanis...

Describe in detail the following mechanisms : (a) Pendulum Pump (b) Crank and slotted lever mechanism Explain in detail the following mechanisms : (a) Elliptical Tramme

Solve the equation by newton raphson method, Calculate root of equation 3x ...

Calculate root of equation 3x = 100 cosx + 1 by Newton Raphson method correct to three decimal places Calculate root of equation xe x = cosx by Secant method correct to three d

Illustrate the several kinds of chips, (a) Illustrate the several kinds of ...

(a) Illustrate the several kinds of chips formed during metal cutting with neat diagrams. (b) Why is Titanium Nitride a valuable tool coating? (c) Give the differences betwee

Can you explain shell molds, Q. can you explain Shell molds? These mold...

Q. can you explain Shell molds? These molds are prepared by pouring a mixture of sand and thermosetting resin over the heated surface of a metallic pattern, which results into

Compute the ratio of the torque, Compute the ratio of the torque: Comp...

Compute the ratio of the torque: Compute the ratio of the torque transmitted by a hollow & a solid shaft of the similar material, length & weight. Solution d i = inte

Bond, What is bond and the types..

What is bond and the types..

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd