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

Equilibrium of body - force acted at any angle, Equilibrium of body - force...

Equilibrium of body - force acted at any angle: Magnitude of force ' p ' which is required to move the body down the plane. When ' p ' is acted with an angle of φ.

Tension in string and accelerations of block, Tension in string and acceler...

Tension in string and accelerations of blocks: Find out the tension in string and accelerations of blocks A and B having weights 200N and 50N respectively, connected by the s

Steam table - thermodynamics, Steam table - Thermodynamics: Sol.: St...

Steam table - Thermodynamics: Sol.: Steam table offers various physical data regarding the properties of saturated water and steam. This table is very helpful in solving the

Define leakage flux. , Leakage flux : The flux that links the ...

Leakage flux : The flux that links the coil only partially passes through the core does not link the coil as the moving or rotating device is called leakage flux.

Inertia -factors in clutch design , Inertia : The clutch rotating part sho...

Inertia : The clutch rotating part should have minimum inertia. Otherwise, when the clutch is released for gear changing, the clutch plate will keep on spinning, causing hard shif

High pressure die casting process, what is the working princile of high pre...

what is the working princile of high preesure die casting process

Aerospace engineering, Have you ever been sit on a flight? Have you ever th...

Have you ever been sit on a flight? Have you ever think how those gigantic machines are developed ? Aerospace engineering is just the place where you require to be. Aerospace engin

Induction machine operation, Induction Machine Operation For operation ...

Induction Machine Operation For operation with rated L-L voltage of 230 V and rated frequency of 60 Hz, the performance of a particular 10 hp machine at its rated speed and pow

Steps for method of joint, Step s for Method of Joint: To find force ...

Step s for Method of Joint: To find force in member of the truss by this method, the three Steps which are given below are followed. Step-1 : Calculate reaction at su

Determine the tension and reaction in cable - mechanics, Q:  The12m boom A...

Q:  The12m boom AB weight 1 KN, the distance of center of gravity G is 6 m from point A.  For the position given, determine the tension T in cable and reaction at B.

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