Larson-miller parameter, Mechanical Engineering

Assignment Help:

Larson-Miller parameter:

For material of example of calculate life in hours at temperature of 900oC, and at σ = 20 MPa.

Solution

Larson-Miller parameter is given by

m = T (ln t + 85.75)

Use  T = 900 + 273 = 1173 K

But        m = 16.75 × 104

From Example 1.7 at σ = 20 MPa

∴          1173 (ln t + 85.75) = 16.75 × 104

∴          ln t =(16.75 × 104 /1173 )- 85.75

                    = 142.8 - 85.75 = 57.05

∴          t = 5.95 × 1024  hours


Related Discussions:- Larson-miller parameter

Boiler classification, BOILER CLASSIFICATION : (1 )  According to Tub...

BOILER CLASSIFICATION : (1 )  According to Tube Contents:   Boilers can be water tube or fire tube type. In water tube boilers water flows in tubes and in Fire Tube Boilers h

Cycloidal motion of follower, Derivation of displcement equation of cycloid...

Derivation of displcement equation of cycloidal motion related to follower

Differences between torque and torsion, Differences between torque and tors...

Differences between torque and torsion: Give differences between torque and torsion. List a few examples of torsion in the engineering practice. Sol.: When structural or

#title.THERMODYNAMICS., what are the limitations of first law of thermodyna...

what are the limitations of first law of thermodynamics?

Maintenance requirement at storage tanks, Q. Maintenance requirement at sto...

Q. Maintenance requirement at storage tanks? Little maintenance is required at storage tanks; sometimes access is required for equipment used to remove accumulated solids (this

Coefficients of friction, Coefficients of friction: The coefficients o...

Coefficients of friction: The coefficients of friction under the sliding supports of the door in Figure are equal to 0.30 at A and 0.20 at B. What forces P shall give the 25 k

Calculations for the force to move a block, Calculations for the force to m...

Calculations for the force to move a block: T wo blocks A and B having weight 4KN and 2KN respectively are in equilibrium position as shown in the figure given below. Coeffi

Head pump, the pump, shown in the figure, is used to deliver water to a dis...

the pump, shown in the figure, is used to deliver water to a distribution system. there is no flow to or from reservoir A, but it is used to damp pressure and protect the pump. th

Applications of Numerical Methods in Mechanical Engineering, Various applic...

Various applications of numerical methods in the field of m=numerical engineering.

Production drawing, use of productin drawing in manufacturing technolagy

use of productin drawing in manufacturing technolagy

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