Upload
2,427

Subscription preferences

Loading...

Loading icon Loading...

Working...

bhadeshia123

Taylor test on steel

356 views 3 weeks ago
This movie has kindly been provided by Drs Dawid Myszka and Tadeusz Cybula, Warsaw University of Technology, Poland

"One of the simplest methods for subjecting a metal to a high stress for a short time is to form it into a cylindrical specimen and fire this at a steel target. The front part of this projectile crumples up, but the rear part is left undeformed. If the target is rigid the distance which this portion travels while it is being brought to rest may be taken as the difference between the initial length and the length of the deformed specimen after impact. Knowing the velocity of impact, a minimum possible value can be assigned to the maximum acceleration of the material, and from this a minimum value for the yield stress can be calculated. The actual yield stress is considerably greater than this minimum, and methods are given for calculating a more probable value." This quote is from G.I. Taylor: The use of flat-ended projectiles for determining dynamic yield stress, Proc. Roy. Soc. London A, 194 (1948), p. 289). The resulting data can be used to estimate the plasticity of the metal at large strain rates.

http://www.msm.cam.ac.uk/ph... Show less
Read more
  • Minimal surface tension

    • 1 week ago
    • 101 views
    Huge bubbles created by minimising the surface tension of the fluid. In the market square, Cambridge
    http://www.msm.cam.ac.uk/phase-trans
  • Revolutions and History

    • 2 weeks ago
    • 94 views
    Professor Ron Laskey complaining in song, about the missing portraits of Masters of Darwin College from the dining hall. Followed by a ditty on answers given by children to history questions.
  • The Heathrow Airport Lament

    • 2 weeks ago
    • 81 views
    Professor Ron Laskey at the Darwin College, Cambridge, performing at the 50th anniversary meeting. Advantages and disadvantages of being an academic scientist.
  • Graphite squeezed out of austempered ductile cast iron

    • 3 weeks ago
    • 229 views
    This movie has kindly been provided by Drs Dawid Myszka and Lech Olejnik, Warsaw University of Technology, Poland

    It shows a cylinder of austempered ductile iron being compressed. About half way t...
  • Taylor test on steel

    • 3 weeks ago
    • 356 views
    This movie has kindly been provided by Drs Dawid Myszka and Tadeusz Cybula, Warsaw University of Technology, Poland

    "One of the simplest methods for subjecting a metal to a high stress for a short...
  • Modern Steel Products - 2014, rails 25

    • 1 month ago
    • 189 views
    Professor de Cooman takes the topic of long product manufacture, including rails. Both the production and metallurgy of the alloys is described. This is a part of a course of lectures given at the...

Crystallography 2013 Play

A complete course in crystallography. Associated materials such as lecture notes, books, and much more can be found on:
http://www.msm.cam.ac.uk/phase-trans/teaching.html

H. K. D. H. Bhadeshia

Thermodynamics Play

A complete course on thermodynamics, focusing particularly on the solid state. A great deal of associated information including lecture notes, slides, books can be downloaded freely from:
http://www.msm.cam.ac.uk/phase-trans/teaching.html
H. K. D. H. Bhadeshia

Kinetics Play

The kinetic theory of transformations, including nucleation, growth, interphase response functions, overall transformation kinetics, simultaneous transformations, phase field theory.

H. K. D. H. Bhadeshia
http://www.msm.cam.ac.uk/phase-trans
Loading...
Working...
to add this to Watch Later

Add to