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.]
Q. Describe Fire clay and Kaolinite Binders? Fire clay : Fire clay is refractory clay usually found in the coal measures. Kaolinite: Its general composition is al 2 o 3
Explain Extension of screw conveyor by hydraulic cylinder "Extension of screw conveyor with the help of linkage arrangement by hydraulic cylinder and hinged joint" Procedur
i am working as a packaging line design engineer & i need to connect 2 cup filling machines to a single line. how do i solve this
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Flux Cored Arc Welding (FCAW) This is a variation of GMAW where solid wire is replaced by flux cored wire. The equipments and accessories are the same. Generally, flux cored wi
please help me to calculate the diameter of a brake drum for using in a "brake drum dynamometer engine test rig" the engine specs are as follows: - 6Hp single cylinder 4stroke engi
Determine in brief about the Residual soils Residual soils are generally very complex and varied. They are the products of in-situ disintegration of rocks and weathering. The g
This section covers welding of pressure parts including those non-pressure parts when welded to pressure parts. All welding design functions necessary within the contract shall be
Tachometer: This is used to measure the speed (revolutions) of an engine in revolutions per minute (RPM). This is shown in Figure. Figure : Tachometer
What are the rules which must be kept in mind when designing castings? Some of the points which should be kept in mind during the process of cast designing are as follows: >
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