• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 9
  • 4
  • 2
  • 2
  • 1
  • 1
  • Tagged with
  • 315
  • 315
  • 293
  • 292
  • 282
  • 5
  • 4
  • 4
  • 4
  • 4
  • 4
  • 4
  • 3
  • 3
  • 3
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
201

Stochastic and experimental studies of drilling by electrochemical arc machining

Khayry, A. B. January 1984 (has links)
No description available.
202

The manufacture of dies and tooling with sculptured contours

Smith, Gordon January 1991 (has links)
No description available.
203

Visco-plastic and thermal stress analysis in the continuous casting of steel

Hill, N. J. January 1986 (has links)
No description available.
204

Production control by microcomputer in small firms

Anwar, M. January 1985 (has links)
No description available.
205

The development of electrochemical machining and other techniques in the measurement of residual stress

Chadwick, F. J. January 1982 (has links)
No description available.
206

Condition monitoring of the centreless grinding process

Lacey, S. J. January 1985 (has links)
No description available.
207

Production integrity for hydroforming and preceding forming process using FEA techniques

Haas, Andreas January 2001 (has links)
No description available.
208

An artificial neural network architecture system for real time reactive scheduling and control

Nureldin, Hazem M. January 2001 (has links)
No description available.
209

Process developments in electrochemical arc machining

De Sliva, A. K. January 1988 (has links)
No description available.
210

The failure of graphite arc-furnace electrodes

Middleton, Kenneth George January 1985 (has links)
Graphite electrodes used in steelmaking are joined together by threaded, tapered connectors (nipples) of similar material. The jointed regions are subjected to arduous thermal and mechanical stresses during use. Mechanical stresses arise from electrode self-weight and tightening torque, and the thermal stresses from the high furnace operating temperatures which ensure a high radiative surface cooling rate as the electrode is removed from the furnace. This thermal shock effect is thought to contribute to particular types of electrode failure. In this computer-aided analysis of the stresses induced by the above effects, a commercial finite element program is used in conjunction with a purpose-written finite difference program. Mechanical loads due to electrode self-weight and pretightening torque are evaluated and applied with suitable restraints to an axisymmetric finite element mesh, to obtain a mechanical stress analysis. The finite difference program is then used to calculate the time-variant temperature field experienced by an electrode on being removed from the furnace. An interpolation program is used to assign temperatures at the nodes of the same finite element mesh, the thermal stresses then being evaluated by the commercial finite element program. A 'failure envelope' analysis of the results identifies the critically-stressed regions of the joint and shows that in some such areas the thermal-shock stresses act to relieve the mechanically-induced stresses. A statistical analysis based on Weibull theory predicts a high incidence of crack formation due to thermal stresses. Finally, consideration is given to the effect of thermal orthotropy and temperature-dependent material properties.

Page generated in 0.1703 seconds