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

Probability, Airlines like to overbook their flights (this is a vibrant are...

Airlines like to overbook their flights (this is a vibrant area of research called yield management). It is estimated that 10% of the people who book their flight do not show up. H

Power sources-inverter type power sources, INVERTER TYPE POWER SOURCES Fo...

INVERTER TYPE POWER SOURCES For site welding and repair applications, a need was felt for long time to have light weight arc welding power source. Even though, a petrol driven ro

Can you explain investment casting, Q. Can you explain Investment casting? ...

Q. Can you explain Investment casting? -Investment casting produces very high surface quality and dimensional accuracy. -Investment casting is commonly used for precision eq

Determine optimal sequence plan, a) What do ypu understand by production Pl...

a) What do ypu understand by production Planning and Control Function. Briefly mention the objective of PPC. b) There are 8 job in an auxiliary unit requiring processing on mach

Orthographic assembly drawing, Orthographic assembly drawing: On MyUni...

Orthographic assembly drawing: On MyUni (and shown above)  there is a figure of a small  partially assembled single-cylinder 2-stroke engine  that you need  to model. Drawings

Order holons , This type of holon is mainly concerned along wit...

This type of holon is mainly concerned along with carrying out the work in a fine and correct way at correct time.

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