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.]
SUBMERGED ARC WELDING The optimum performance of welded vessels and structures in service have led to the full exploitation of automatic welding processes. This arc welding is on
First law of thermodynamics: The First Law of Thermodynamics states that work and heat are equally convertible. The present tendency is to include all the forms of energy. The
Briefly explain the process of age hardening in metals
Find out the axial moment of inertia: Find out the axial moment of inertia of a rectangular area of base b and height d around centroidal axis GX and the base B 1 B 2 . So
What do you mean by Thermil-welding ? Describe the process with neat sketch.
Terminal Nut: This is a detachable type of terminal nut. The high tension (HT) cord is connected here. This is also available in non-detachable type. Figure: Spark Plug
WHAT IS CALGON CONDITIONIMG
vibration via footpegs and handlebars.
Q What do you know about Series welds in spot welding? It is a welding method in which two or more spots are produced simultaneously with only one common but indirect current p
Evaluate the reactions at hinge and roller support: Q: A Force P = 5000N is applied at centre C of beam AB of length 5m as shown in figure given below. Find the reactio
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