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

Hill roads - road under special conditions, Hill Roads: Alignment ...

Hill Roads: Alignment Selection and Geometric Design Standards Here, you have already learnt how an alignment of a hill road has to be selected. The selection of a g

Unsymmetrical bending, how to culculate stress in unsymmetrical bending

how to culculate stress in unsymmetrical bending

Interesting history of iges, Interesting history of IGES: In the year ...

Interesting history of IGES: In the year of 1979, events took place that catalyzed the CAD vendor and user community to make the first national standard for CAD data exchange.

Expression for moment of inertia, Drive a mathematical expression for momen...

Drive a mathematical expression for moment of Inertia of a rectangular section. A body consists of a solid hemisphere of radius 4 cm and a right circular cone of height 12 cm. t

General safety and service tips, In general safety and service tips, you le...

In general safety and service tips, you learnt about general service and safety tips those must be followed while working in workshop. It gives the competency statements useful for

Automobile, I have done Bca in 2012 persuing Doing job which is not stable ...

I have done Bca in 2012 persuing Doing job which is not stable i have to learn automobile design and mechanism and restoration finding some iti course

Hydrostatic pressure, can a swimming pool that is full be cracked or lifted...

can a swimming pool that is full be cracked or lifted by hydrostatic pressure?

Equilibrium conditions - non concurrent force system, Equilibrium condition...

Equilibrium conditions: What are equilibrium conditions for non concurrent force system? Sol.: For the Equilibrium of non concurrent forces there are three conditions:

Describe loose piece pattern, Loose piece pattern This type of pattern ...

Loose piece pattern This type of pattern is also used when the contour of the part is such that withdrawing the pattern from the mould is not possible. Hence during moulding th

Mechanism and machine, define frame of a machine. which link of the machine...

define frame of a machine. which link of the machine is known as frame?

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