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 8 of 8 for “"die-cast"”.
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Microstructures and mechanical properties of high pressure die cast A383 alloys
This dissertation studies the processing-microstructure-mechanical property relationships in the high pressure die cast A383 alloy. The high pressure die casting process has been widely used in automotive industry due to the rapid cooling rate and short cycle time. Much attention has been paid to …
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An Investigation of Wear-Resistant Coatings on an A390 Die-Cast Aluminum Substrate
… coating. The primary clutch sheave material is a die-cast A390 aluminum. A wear test stand was developed to duplicate wear found on CVTs currently in use. The wear was evaluated using four methods. First, the change in shift characteristics of the CVT while running on the wear test stand, second a …
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An Investigation of Improving Wear of 390 Die-cast Aluminum Through Hardcoat Anodizing
… occurs on the surface of a Hardcoat anodized die-cast aluminum surface, which was sliding against a composite rubber belt. This research investigated known wear theories and the results for previous testing to understand the mechanisms that were likely occurring in this application. These …
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Accident and Injury Prevention: The Effects of Job Factors and Employee Behaviors
… absolute frequency of accidents occurs in the die cast area, while the highest relative rate of accidents occurs in the furnace room. The type of accident that occurs with the highest frequency is lacerations and the highest rate of accidents occurs during the first shift. The accident analysis …
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Multiscale In-Situ Characterization of Crystal Orientation, Temperature, and Microstructure Effects on Creep Defromation of Pure Magnesium and Mg-Al-RE Alloys
… promote dynamic recovery. The final part studies high pressure die cast (HPDC) AE44 alloys (AE44-2 and AE44-4). Results reveal that β-phase morphology enhances creep resistance by obstructing dislocation glide and grain boundary sliding. A Hall-Petch-like relationship between β-phase spacing …
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Aspects of brushless doubly-fed induction machines.
This dissertation, composed of two parts, studies the brushless doubly-fed induction machine (BDFM)- an electric machine with two stator windings, a modified cage-rotor, and, when run synchronously, the electrical properties of a synchronous machine, i.e. precise speed and power-factor control. The …
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Hot workability of magnesium alloys
For the alloy AZ91 (Mg-9.OAl-0.7Zn-0.13Mn) die cast specimens were subjected to torsion testing at 150, 180, 240, 300, 420 and 450C̕ at 0.05 0.5 and 5.0 s -1 The as-cast specimens exhibited hot shortness at 360C̕ and above; however in that domain, after prior thermomechanical processing (TMP) at …