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

Compressors, How can I construct a tyre pumping machine.

How can I construct a tyre pumping machine.

Define non - consumable electrode, Q. Define Non - consumable electrode? ...

Q. Define Non - consumable electrode? These types of electrodes are prepared from high melting point materials. Mainly carbon, pure tungsten and its alloy are used for electrod

Cnc lathe job clamping system, can we use electrical power chuck for job cl...

can we use electrical power chuck for job clamping in cnc lathe.what are the issues related

Show environmental conditions for plant, Q. Show Environmental Conditions f...

Q. Show Environmental Conditions for plant? Data on the following environmental factors are required to support the design layout and choice of the most appropriate orientatio

What is, what is soundness of casting.

what is soundness of casting.

Design and construction of waste heat boilers, Shop assembled, steam drum, ...

Shop assembled, steam drum, risers, downcomers, and all other related equipment on the steam side shall be designed, fabricated and hydrostatically tested to all requirements of AS

Parts of motorcycle , Parts of Motorcycle Figure: Right Side Vie...

Parts of Motorcycle Figure: Right Side View of a Motorcycle 12 Part No. Name Functions 1 Muffler he

Plastic material and rigid plastic material, Plastic material and rigid pla...

Plastic material and rigid plastic material: For the plastic material, there is stress at which plastic deformation begins. A rigid plastic material is one in which the ela

Design data of screw conveyor with auger, DESIGN FACT DATA: ?A) Torque...

DESIGN FACT DATA: ?A) Torque capacity for traction motor of screw conveyor-1660 N-m. ? B) RPM of Traction motor-115 rpm. ? C) Pressure require for operating the telescopi

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