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

Som, Simple problem on direct stress and Bending stres

Simple problem on direct stress and Bending stress

Compute the concentration of li, Aluminum-lithium alloys have been develope...

Aluminum-lithium alloys have been developed by the aircraft industry to reduce the weight and improve the performance of its aircraft. A commercial aircraft skin material having a

Manufacturing , Differentiate between hot working and cold working process

Differentiate between hot working and cold working process

What is hot extrusion, Q. What is Hot extrusion? Hot extrusion is a hot...

Q. What is Hot extrusion? Hot extrusion is a hot working process, which means it is done above the material's recrystallization temperature to keep the material from work harde

Vitrification-manufacturing methods of ceramics, Vitrification This is...

Vitrification This is liquid phase sintering. It is achieved via incorporating a component that melts to viscous liquid during sintering. Such viscous liquid solidifies in gla

Cast iron, CAST IRON: Cast iron is an important alloy of Fe and C are ...

CAST IRON: Cast iron is an important alloy of Fe and C are mostly employed within industry for its convenience to casting in intricate and superior mechanical properties. Stee

Various components of transmission system , Various Components of Transmiss...

Various Components of Transmission System Primary Drive Gear : It is mounted on crankshaft. It transfers power to primary driven gear. Primary Driven Gear : It is

Higher engineering mathematics by bs grewal, give me the solutions for high...

give me the solutions for higher engineering mathematics by bs grewal

Contents of cast iron, Contents of Cast Iron: Cast Iron or CI is prep...

Contents of Cast Iron: Cast Iron or CI is prepared form melting pig iron in cupola furnace or in electric furnace. This furnace offers better quality. CI contains various

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