Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Calculate the critical crack length:
A wide plate of mild steel is subjected to uniform tensile load causing a stress of 100 MPa. Calculate the critical crack length in the centre of plate which when reached will cause the plate to fracture, if fracture toughness of mild steel is 1340 N / mm2
Solution
The crack will become unstable in the centre of the plate, i.e. the fracture will occur when the crack has attained a critical length (say ac) under given stress ? which remains constant. At this moment KI → KIC.
KI for a large plate with central crack of length 2a is by Eq.
and hence
or
∴ 2ac = 114.3 mm
[This example explains how the knowledge of fracture toughness of material and KI of a crack can be used to calculate the length of a crack which must not be permitted to exist. If the cause of crack extension may not be controlled, the only thing left to designer is to calculate critical length in advance. Then the crack length would have to be monitored throughout the life of the structure and as soon as it approaches the critical value, the structure should be discarded to avoid sudden fracture or other measures be taken by which either KI is reduced to KIC is improved.]
I want to make a form tool for lathe for making a convex groove of 3 mm radius. tool material will be tungsten carbide. I want to know the dimensions of tool. What is the procedure
Under Damping If the restoring force is larger than friction, and the oscillation is classified as under-damped. In this case, ω is real and behaves exactly like the solu
impartance of moulding sand
Q. Painting of structural components of skid? Sandblasting and priming shall be carried out prior to assembly, and shall include all bolt holes, flange faces, etc. Flange gaske
Hi ... I have a final project I need to finish it soon about 3 weeks from now ... to design any machine by the Solidworks program .... please feed me back if you can .. thank you
Q. Can you explain the Mobile bed model? Mobile bed models can again be either geometrically similar or vertically exaggerated. Models of the former type permit study of proble
Globular Transfer Globular transfer is characterised by a drop size of greater diameter than that of the electrode wire. The large drop is easily acted on by gravity, generall
Find out the product of inertia of a rectangular area: Find out the product of inertia of a rectangular area b × d with respect to its sides as illustrated in Figure Solut
Evaluate the power output of turbine: Q: A turbine in steam power plant operating under steady state conditions receives the superheated steam at 3MPa and 350ºC at the rate o
Q. Soil conditions for plant layout? Soil conditions affect the foundation requirements, drainage, type of substructure used and may limit the size and shape of the facility. T
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd