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!
Determine the fatigue strength of medium carbon steel:
For determining the fatigue strength of medium carbon steel 15 specimens, identical in all respect were tested in cantilever rotating beam fatigue testing machine. The ultimate tensile strength of steel was known to be 550 MPa and test began at 275 MPa with a fixed step of 5 MPa. Determine the fatigue strength if results obtained are described below.
Solution
As a first step plot survival (o) and failure (x) pattern form visual depiction. From the plot it is seen that the lowest level at which survival is obtained is σo = 275 MPa. Calculations are made by the help of the table.
Figure: Failures Survival Pattern
Eq. (22) is utilized for calculating fatigue strength, σe.
Substituting
σ e = 275 + 5 (( 7/8) + (1/2))
= 281.875 MPa.
Say 282 MPa (Ans.)
the jet transport b is flying north with a velocity vb=600km/h when a smaller aircraft a passes un-derneath the transport
Potential energy (PE) The energy possessed by body or system by virtue of its position above the datum level. The work done is because of its falling on earth's surface. Po
Find out the Moment of Inertia of a triangular area: Find out the Moment of Inertia of a triangular area ABC with base b and height d around its base BC. Therefore or otherwis
what are the significance and scope of operations research
Q. Preliminary layout considerations? This section outlines the key aspects to be considered when preparing preliminary layouts during the evaluate phase. Preliminary layouts a
The following data was obtained from an orthogonal cutting test : Rake angle = 20o, Depth of cut = 6 mm Feed rate = 025 mm/rev Chip length before cutting = 29.4 mm Chip
how to submit work online?
Q. Explain the terms centre of gravity and centroid. Sol. : A point can be found out in a body through which resultant of all such parallel forces acts. This point through
Corollaries of first law of thermodynamics: First law of thermodynamics has significant corollaries. Cor ollary 1: (First Law for process). There exists property of
(a) What is transmission system? Represent the main components of transmission system with the help of diagram. (b) What do you mean by terms torque, power and RPM? (c) What
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd