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

Fault detection and isolation for lateral flight of an uav, Introduction   ...

Introduction   Fault tolerance is very important for aircraft flight control.  The majority of the faults occur in the sensors and actuators onboard the aircraft.  Once a fault

Steam generator piping, Q. Steam Generator Piping? Control valves shall...

Q. Steam Generator Piping? Control valves shall be Fisher or Purchaser-approved equal. All valves shall be detailed by size, rating, make, model number, and materials Two

Control of the qr engine, We provide you with some information about the co...

We provide you with some information about the control of the QR Instability Problem Cascaded P Control   PLEASE THE TASK We would like you to do an indepth

Sequecing problm, What is the sequence of this problem Job- 1 2 3 4 5 6 7 ...

What is the sequence of this problem Job- 1 2 3 4 5 6 7 M/c M1 4 13 16 7 11 12 10 M2 9 11 11 7 13 2 4

Draw a diagram of a simple carburettor, a) Draw a diagram of a simple carbu...

a) Draw a diagram of a simple carburettor and briefly explain its function. b) What are the basic characteristics of fuels for CI engines.

Determine the rate of heat removal - mechanics, Determine the rate of heat ...

Determine the rate of heat removal: Carbon dioxide passing through heat exchanger at rate of 100kg/hr is cooled down from  800 0 C to 50 0 C . Write down the steady flo

Velocity acceleration, velocity acceleration by relative method and intenta...

velocity acceleration by relative method and intentan methodto be showed graphical on it?

Difference between upstream and downstream in a refinery, The total process...

The total process of a the refining business begins at the oil field or gas field and runs all the way to the sending of processed hydrocarbon to a final user. Upstream applies

Editing dimensions-autocad, Editing Dimensions The dimension edit comma...

Editing Dimensions The dimension edit commands, DIMEDIT and DIMTEDIT are used basically to adjust the position of the text part of a dimension. This is usually only necessary,

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