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

Wire melting characteristics, WIRE MELTING CHARACTERISTICS A non linear r...

WIRE MELTING CHARACTERISTICS A non linear relationship exists between the rate at which the wire is fed into the arc and the current required to burn it off to maintain a constan

Environmental science, How would you say environmental studies are multidis...

How would you say environmental studies are multidisciplinary nature?

Determine the centroid of the area, Determine the centroid of the area: ...

Determine the centroid of the area: Determine the centroid of the area OBDC Solution The trapezium area is divided in two simple areas,  (i)        A 1 = Rectangle

Describe microscopic and macroscopic approaches, Distinguish between micros...

Distinguish between microscopic and macroscopic approaches. Describe thermodynamic system. Differentiate between closed system, open system and an isolated system.

Heat treating equipment, Heat Treating Equipment: The major equipment...

Heat Treating Equipment: The major equipment for heat treatment is furnace. There are two main categories of furnaces - batch and continuous. The furnace selection needs cons

Head loss, calculate the head required

calculate the head required

Uniform alternate electric field, Uniform Alternate Electric Field Supp...

Uniform Alternate Electric Field Suppose a particle moves under a uniform (i.e. independent of space co-ordinates) but alternating electric field  E  given by, E = E 0  si

Aerospace engineering, An airfoil of surface area 1.5 ft2 is tested for lif...

An airfoil of surface area 1.5 ft2 is tested for lift L in a wind tunnel. At an angle of attack of 7° with standard air of density 0.0024 slugs/ft3 at a speed of 90 ft/sec, the lif

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