Determine the parameter - larson-miller parameters, Mechanical Engineering

Assignment Help:

Determine the parameter - Larson-Miller parameters:

Larson-Miller parameters for an alloy at tests levels 10 MPa and 30 MPa are determined respectively as 18 × 104 and 16 × 104. Determine the parameter for 20 MPa.

Solution

Write equation

ln σ= k1 m + c1

where, m is Larson-Miller parameters. Use given values

ln 10 = k1 × 18 × 104 + c1  = 2.3

By subtraction

ln 30 = k1 × 16 × 104 + c1  = 3.4

 2 × k1 × 104  = - 1.1

∴ k1  =- 0.55 × 10- 4

∴ c1  = 2.3 + 18 × 0.55 = 12.21

∴  ln σ= - 0.55 × 10- 4 m + 12.21

For

σ = 20 MPa

m =- ln 20 - 12.21 × 104  /0.55

               = 16.75 × 104


Related Discussions:- Determine the parameter - larson-miller parameters

Mechanical data for line designation tables, Line Designation Tables (LDT's...

Line Designation Tables (LDT's) (Appendix "D") are initially generated by the Piping designers. Design conditions are inputed by the Process discipline, and the Mechanical Engineer

Determine the flow rate - material balances, 1. A continuous steady-state p...

1. A continuous steady-state process involving components A, B, and C is shown below, along with the known process information a) On the flowchart, assign variables for the unkn

Overbridges - fly-overs and underpasses, Overbridges, Fly-Overs And Underpa...

Overbridges, Fly-Overs And Underpasses: Railway Over-bridges Railway Over-bridges (ROB) are structures constructed to enable the road traffic to go over the railway t

What is the difference between mis and erp, MIS MIS:- Management Infor...

MIS MIS:- Management Information System Produces reports on user demand MIS is use for the Decision making reports It Collect data form of all department then produce

Show oil production, Q. Show Oil production? Bitumen emulsion from fiel...

Q. Show Oil production? Bitumen emulsion from field enters into the CPF emulsion inlet header. Depending on the emulsion temperature it may be cooled through two series exchang

Motion of the boat, Motion of the boat:  (i) A man having weighs 500 N...

Motion of the boat:  (i) A man having weighs 500 N and is in a boat weighing 1500 N which is free to move over a steady lake. If he begins running along the length of the boat

What is metal jacketing, Q. What is Metal Jacketing? a) Metal jacketing...

Q. What is Metal Jacketing? a) Metal jacketing shall be Alcan T-3000-H14 series, T-1100-H14 or approved equivalent stucco embossed aluminum with a factory applied moisture barr

Calculate the kic from the data - thick cylinder, Calculate the KIC from th...

Calculate the KIC from the data - thick cylinder: In a fracture test a 3-point bend specimen of thickness 20 mm and depth 25 mm is supported over a span of 100 mm. The specime

Pmi testing of alloy materials, Q. Show PMI testing of alloy materials? ...

Q. Show PMI testing of alloy materials? Suppliers and Construction Subcontractors are required to verify or conduct PMI testing of alloy materials that they procure and use and

Planning a retail interior space, Question 1: A good display of the mer...

Question 1: A good display of the merchandise is the result of planning, cooperation and coordinating. A good schedule of work is important for a good design with the use of me

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