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

Matlab Applied Optimization Problem, A fenced enclosure consists of a recta...

A fenced enclosure consists of a rectangle of length L and width 2R, and a semicircle of radius R, as shown in Figure P20. The enclosure is to be built to have an area A of 1600 ft

Determine the instantaneous hydrostatic force, A 6 cm diameter rubber ball ...

A 6 cm diameter rubber ball weighing 5 g is used to plug a 4 cm hole in the base of a tank. The tank is in use and is gradually emptying. At approximately what depth will the ball

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

Applied chemistry, hardness of bore well water is less than sea water .just...

hardness of bore well water is less than sea water .justif

What is metal working processes, Q.What is Metal working processes? Met...

Q.What is Metal working processes? Metal working processes are processes used to produce wrought products. These product include angles, channels, I-beams, round, squar

Larson-miller parameter, Larson-Miller parameter: For material of exam...

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

Steps for decarbonise the engine , The following steps are taken to decarbo...

The following steps are taken to decarbonise the engine : Remove the exhaust muffler. Disconnect the spark plug. Remove the intake pipe bolt. Loosen the bolt de

Determine tangential and normal stresses, A rectangular block of material i...

A rectangular block of material is subjected to stresses 65N/mm 2 (tensile) in x- direction and 35 N/mm 2 (tensile) in perpendicular direction. It is accompanied by shear stress

CHEMISTRY, WHAT IS CALGON CONDITIONIMG

WHAT IS CALGON CONDITIONIMG

Shielding gases, SHIELDING GASES Shielding gas is directed by the to...

SHIELDING GASES Shielding gas is directed by the torch to the arc and weld pool to protect the electrode and the molten weld metal from atmospheric contamination.  Argon

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