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 “"Drop testing"”.
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An experimental facility for microchannel research and evaporating R134a in microchannel tube
… design. Heat transfer coefficient and pressure drop are the two most important parameters to be measured in an experimental facility. A featured design of heat transfer behavior and pressure drop testing facility for both evaporating and condensing refrigerant in microchannel tubes are made and …
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Leak detection in power plant heat recovery steam generators utilizing medical radionuclides
… which these leaks are detected rely on pressure drop testing: for power plants operating in today’s fast response market conditions a pressure drop test is not possible. The first evidence of a tube leak is usually associated with a catastrophic failure of a tube necessitating an unplanned plant …
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Strain Gauge Utilization for Aerial Vehicle Dynamic Load Measurement
… traditionally requiring an extensive flight testing regimen. Numerical solution-based design is difficult due to the highly nonlinear deformation behavior of the parachute canopy. Traditionally, circular parachutes are assumed to have symmetric canopy loading upon inflation and during terminal …
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An investigation into the characterisation of the spalling behaviour of Polycrystalline Diamond Compact(PDC) cutters under impact loading conditions
… forces. The results obtained during the impact testing of the PDC cutters were of projected damage area and mass losses, which were converted to volume losses and average crack depth measurements. The loading conditions were characterised as the peak force, average force and impulse experienced …
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Energy Absorption and Progressive Failure Response of Composite Fuselage Frames
Vertical drop testing of transport aircraft fuselage sections indicates that the frames play a major role in the process of absorbing the impact energy in the crushing of the substructure below the main passenger deck. Hence, static tests are performed on individual circumferential frames under a …
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Response of a nonlinear two-degree-of-freedom system subjected to an impact loading
… has been carried out by means of trial and error drop testing of a system of masses representative of an airplane and landing gear. This in turn has proved to be time consuming and expensive. This paper presents a method for obtaining an analytical solution of the equations of motion for a …
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Design and analysis of penetrator probes for planetary science applications
… was partially validated using data from drop testing into snow and shown to have low error values. The model was used to help refine the design for GSIP but also to aid in the development of a miniaturised earthquake-monitoring soil penetrator, broadening the range of impact medium …
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Modeling, design, fabrication and reliability characterization of ultra-thin glass BGA package-to-board interconnections
… novel Mn-doped SACMTM solder to provide superior drop test performance without degrading thermomechanical reliability. Modeling, package and board design, fabrication and reliability characterization were carried out to demonstrate reliable board-level interconnections of large, ultra-thin glass …