- About
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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.
Search results
Showing 201 to 210 of 304 (0.03 seconds)| 201 |
The mechanics of bi-metal drawing of rod and tubeChia, Hock T. January 1975 (has links)
No description available.
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| 202 |
The mechanics of section drawingBasily, B. B. January 1976 (has links)
No description available.
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| 203 |
Solidification cracking in low alloy steel weld metalsMorgan-Warren, Edmund J. January 1972 (has links)
No description available.
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| 204 |
Chemical polishing of aluminium and some associated phenomenaClifford, Andrew W. January 1978 (has links)
No description available.
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| 205 |
A study of the application of low frequency oscillations to multi-tool drawing processesDawson, G. R. January 1972 (has links)
No description available.
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| 206 |
An investigation of the deep drawing process with the application of ultrasonic oscillationsSmith, Alan W. January 1977 (has links)
No description available.
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| 207 |
Failure mechanisms in surface treated tool steelsEwere, Isakpobeje January 1979 (has links)
No description available.
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| 208 |
An analysis of the effect of process parameters on the formability of sheet metalLee, Peter K. January 1972 (has links)
This investigation is in two parts, theory and experimental verification. (1) Theoretical Study In this study it is, for obvious reasons, necessary to analyse the concept of formability first. For the purpose of the present investigation it is sufficient to define the four aspects of formability as follows: (a) the formability of the material at a critical section, (b) the formability of the material in general, (c) process efficiency, (d) proportional increase in surface area. A method of quantitative assessment is proposed for each of the four aspects of formability. The theoretical study also includes the distinction between coaxial and non-coaxial strains which occur, respectively, in axisymmetrical and unsymmetrical forming processes and the inadequacy of the circular grid system for the assessment of formability is explained in the light of this distinction. (2) Experimental Study As one of the bases of the experimental work, the determination of the end point of a forming process, which sets the limit to the formability of the work material, is discussed. The effects of three process parameters on draw-in are shown graphically. Then the delay of fracture in sheet metal forming resulting from draw-in is analysed in kinematical terms, namely, through the radial displacements, the radial and the circumferential strains, and the projected thickness of the workpiece. Through the equilibrium equation of the membrane stresses, the effect on the shape of the unsupported region of the workpiece, and hence the position of the critical section is explained. Then, the effect of draw-in on the four aspects of formability is discussed throughout this investigation. The triangular coordinate system is used to present and analyse the triaxial strains involved. This coordinate system has the advantage of showing all the three principal strains in a material simultaneously, as well as representing clearly the many types of strains involved in sheet metal work.
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| 209 |
Flow and filling characteristics in plane strain and axisymmetrical deformation in forgingLee, Tai C. January 1975 (has links)
No description available.
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| 210 |
In-process weld quality monitoring techniques for resistance-spot weldsBhattacharya, Sabyasachi January 1972 (has links)
No description available.
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