Fatigue crack propagation, Mechanical Engineering

Assignment Help:

Fatigue crack propagation:

If it is assumed that no plastic deformation occurs around crack tip and law of fatigue crack propagation for place of above Example is da/dN =  10- 8 (Δ KI eff )2.0 mm/cycle , find after how many cycles the plate will fracture.

Solution

Δ K I = ΔK I eff     because there is no plastic deformation in crack tip neighbourhood.

1926_Fatigue crack propagation.png

ac = 146.14 mm, ai = 35 mm from above Example .

or, Nf   =2´104 ln ( ac/ ai) =  2´104 ln (146.14/35)

or, N f  = 2´104 ln (4.175) = 28584 cycles


Related Discussions:- Fatigue crack propagation

Calculate the spindle speed in milling operation, Calculate the Spindle Spe...

Calculate the Spindle Speed in Milling Operation Calculate the spindle speed (N) if a copper job is to be milled by  (a) stellite cutter  (b) cemented carbide cutter.

Evaluate total heat of steam - thermodynamics, Evaluate total heat of steam...

Evaluate total heat of steam: 10 kg of wet saturated steam at 15 bar pressure is superheated to the temperature of 290°C at constant pressure. Find heat needed and the total

Evaluate the resultant of magnitude and direction of force, Evaluate the re...

Evaluate the resultant both in magnitude and direction of the four force acting on the body as shown in figure given below :

Boiler, equivalent evaporation of boiler..?

equivalent evaporation of boiler..?

Statics, what are the applications of statics in engineering

what are the applications of statics in engineering

Cylinder - part of combustion engine, Cylinder - Part of combustion engine:...

Cylinder - Part of combustion engine: Cylinder: It provides cylindrical closed space to allow movement of piston and to admit charge. It is made up of grey cast iron or i

Illustrate the design process and application of cad, Describe the use of c...

Describe the use of computer in : (i) Design (ii) Manufacturing Illustrate the design process and application of CAD.

Qualifications of welding procedures, Q. Qualifications of Welding Procedur...

Q. Qualifications of Welding Procedures? The Fabricator shall prepare and submit for review by Welding Procedure Specifications (WPS) and Procedure Qualification Records (PQR),

Truss arrangement assuming the members are beams, Q2.1  Using the stiffness...

Q2.1  Using the stiffness method calculate axial forces and the deflections of the joints of the truss shown in the FIG. The truss was built using 50 mm x 50 mm x 5 mm SHS with  E

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