Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"High strain rate deformation"”.
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Low to high strain rate deformation of amorphous polymers : experiments and modeling
… and poly(methvl methacrylate)--at strain rates ranging from 10⁻⁴ to 10⁴ s⁻¹. This spectrum of strain rates was achieved in tension/compression tests using a dynamic mechanical analyzer (DMA), a servo-hydraulic testing machine and a split-Hopkinson pressure bar. Tension tests on the …
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Effect of Printing Parameters on the Structure and Properties of 316l Stainless Steel
… little attention has been paid to the high-strain rate deformation behaviour of this material. Therefore, in the current studies, the effect of printing parameters and the build orientation on the microstructure and high strain rate properties of 3D-printed 316L stainless steel alloy …
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Optimization of Conformal Joints in Axial Tension
<p>Electromagnetic forming uses high current to form conductive material. It has been a possible manufacturing technique for joining materials since the 1960s. In the past decade the process has seen a resurgence due to the desire for lightweight manufacturing. The process provides a means to join …
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Determination of thermo-mechanical variables during plain strain compression testing
Plane strain compression (PSC) resting is a method used to simulate the deformation condition of industrial rolling, namely that of plane strain, and is used extensively to describe the influence of deformation variables, being strain, strain rate and temperature, on microstructural evolution. …
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Development and implementation of an opensource DIC acquisition system, focusing on temporal synchronization with the Gleeble 3800
… processing simulator with the ability to perform high temperature, high strain rate deformation experiments. The standard Gleeble 3800 uses electrical resistance heating for temperature control and a closed loop hydraulic actuator for displacement control. In order to extract greater accuracy and …
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The erosion of titanium aluminide intermetallic alloys
… erosion and cavitation erosion. The erosion rates have been measured and the damage mechanisms have been identified and discussed in terms of the microstructures and mechanical properties of the titanium aluminide alloys. This has been achieved with a variety of investigative techniques, …
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Real-time observations of materials under dynamic loading conditions at the micron scale
… shock waves in a thin liquid layer was demonstrated at the micron scale in an all-optical experiment. Shock waves were generated in a 10 [mu]m-thick layer of water by sub-nanosecond laser pulses focused into a ring of 100 [mu]m radius. Time-resolved interferometry imaging with a femtosecond …
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The Role of Twinning in the Plastic Deformation of Alpha Phase Titanium
… In particular, a better understanding of how deformation twinning interacts with microstructural features in titanium alloys is required, because such twinning facilitates plastic deformation at a higher strain rate than dislocations. To investigate this behaviour, commercial purity titanium …
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Ανάπτυξη αριθμητικού προτύπου για την προσομοίωση της σφυρηλάτησης με βολή σωματιδίων
Η σφυρηλάτηση με βολή σωματιδίων (shot peening) είναι μία επιφανειακή κατεργασία που πραγματοποιείται με σκοπό την αύξηση της αντοχής μεταλλικών υλικών και εφαρμόζεται στο τελευταίο στάδιο της γραμμής παραγωγής. Η αύξηση της αντοχής επιτυγχάνεται με την ανάπτυξη θλιπτικών παραμενουσών τάσεων κοντά …
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Effects of micro- and nano-structure on the deformation response of a Ag60Cu40 lamellar and rod-in-matrix eutectic alloy
… indicating atomic percent) linking material deformation to microstructural properties. The Ag60Cu40 material system can be produced as either a multidirectional lamellar or unidirectional reinforcement-in-matrix micro-structure. Specimens of each micro-structure type were studied under …