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

Assumptions in analysis of simple truss, Assumptions in analysis of simple ...

Assumptions in analysis of simple truss: What are assumptions made in analysis of simple truss? Sol.: The assumptions made in finding out forces in the frame are, (1)

Draw a single point cutting tool, Draw a single point cutting tool and defi...

Draw a single point cutting tool and define its various parts. Also describe the standard anglesof this cutting tool.

Spray transfer, Spray Transfer In a gas shield of argon or argon rich m...

Spray Transfer In a gas shield of argon or argon rich mixture [i.e., Ar+CO 2 gas mixture containing more than 80 % argon] the metal transfer changes from globular to spray typ

Rich mixture-mixture requirement , Rich Mixture: It generally ranges...

Rich Mixture: It generally ranges from approximately 7 : 1 to 13 : 1 proportion of air to fuel by weight. To get a high power rich mixture is required. In fact to start the e

Current-fundamentals of electricity , Fundamentals of Electricity Cu...

Fundamentals of Electricity Current: The flow rate of charge or electrons with respect to time is known as current. It is measured in ampere (A).

Predict the output of load - curved beam theory, A load cell based on a "pr...

A load cell based on a "proving ring" is shown below.  The circular portion of the load cell has an inner radius of 1.25 in and outer radius of 1.50 in.  The ring has a depth (i.e.

Belt conveyors, Figure aside shows a belt conveyors which consists of...

Figure aside shows a belt conveyors which consists of endless belt. It has a power driven pulley at one end which moves the belt or downward flow of materials. General

Describe classifications of instruments, Describe various classifications o...

Describe various classifications of instruments and differentiate between null type and deflection of instruments with suitable examples.

Determine the proper torque values from the flange, Q. Determine the proper...

Q. Determine the proper torque values from the Flange? Determine the proper torque values from the Flange Closure Sheet. Apply the torque, using a hand torque-measuring wrench,

Fluid Question, If water is pumped from a pristine stream and piped to a st...

If water is pumped from a pristine stream and piped to a storage tank installed on a tower above the facility, a) What is the minimum dimension for "X" to achieve the required pres

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