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

Actual vapour compression cycle, diffrence between actual and idealactual v...

diffrence between actual and idealactual vapour compression cycle

What is strap footing, What is strap footing? Strap Footing You have...

What is strap footing? Strap Footing You have to use cantilever or strap footings when the proximity of a property line precludes the use of other types for example an isola

Explain commutator- dc generator, Commutator The function of a commutat...

Commutator The function of a commutator is to change alternating current induced in the armature into unidirectional current. The commutator is of cylindrical shape and is made

Show produced water de-oiling unit, Q. Explain about water De-Oiling proces...

Q. Explain about water De-Oiling process? The De-Oiling process consists of three major components: The Surge and Skim Tank which reduces PW oil content to 100 ppm I

Create pattern recognition algorithm to identify degeneracy, Particle in a ...

Particle in a Box 1 (from Dr. Liebman): You will remember that the energy of a particle in a 3 (and 2) dimensional box is defined by 3 (or 2) quantum numbers. This brings up the co

Computation for the magnitude, A horizontal line ABCD measuring 9m is acted...

A horizontal line ABCD measuring 9m is acted upon by forces of magnitude 400, 600, 400 and 200 N at points A, B, C, D respectively with downward direction. These point are so locat

Explain macroscopic approach - thermodynamics, Explain Macroscopic Approach...

Explain Macroscopic Approach - Thermodynamics 1. In this method a fixed quantity of matter is considered without taking into account the events taking place at molecular level.

Governor, what is hartnell governor

what is hartnell governor

., what is fluid?

what is fluid?

Differences between direct stress and bending stress, Give differences betw...

Give differences between direct stress and bending stress. Direct tensile and compressive stress is set up because of load applied parallel to length of object, and direct shea

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