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Full-Text Articles in Engineering
Hydrostatic Pressure Testing Of A Square-Cross Section Stainless Steel Propellant Tank Manufactured Using Selective Laser Sintering, Spencer Fuller
Hydrostatic Pressure Testing Of A Square-Cross Section Stainless Steel Propellant Tank Manufactured Using Selective Laser Sintering, Spencer Fuller
Master's Theses - Daytona Beach
The purpose of this study was to determine if parts manufactured using metal selective laser sintering (SLS) exhibit the same isotropic material properties as conventionally made metal parts. This was accomplished by performing a hydrostatic pressure test (HPT) of a metal SLS manufactured propellant tank, constructed for a nano-satellite of the cubesat class. Strain measurements from twelve strain gage locations on the propellant tank were recorded. A finite element analysis (FEA) model, which assumes isotropic material properties, was generated and a FEA analysis was ran at several pressure loads. The tanks strain data at the corresponding pressure loads from the …
Neural Network Prediction Of Ultimate Compression After Impact Loads In Graphite-Epoxy Coupons From Ultrasonic C-Scan Images, Nikolas L. Geiselman
Neural Network Prediction Of Ultimate Compression After Impact Loads In Graphite-Epoxy Coupons From Ultrasonic C-Scan Images, Nikolas L. Geiselman
Master's Theses - Daytona Beach
The purpose of this project was to investigate how accurately an artificial neural network could predict the ultimate compressive loads of impact damaged 24-ply graphite-epoxy coupons from ultrasonic C-scan images. The 24-ply graphite-epoxy coupons were manufactured with bidirectional preimpregnated tape and cut into 21 coupons, 4 inches by 6 inches each. The coupons were impacted at known impact energies of 10, 12, 14, 16, 18, and 20 Joules in order to create barely visible impact damage (BVID). The coupons were then scanned with an ultrasonic C-scan system to create an image of the damaged area. Each coupon was then compressed …
Development Of Multidisciplinary Design Optimization Process For A Large Scale Hybrid Composite Wind Turbine Blade, Jin Woo Lee
Development Of Multidisciplinary Design Optimization Process For A Large Scale Hybrid Composite Wind Turbine Blade, Jin Woo Lee
Master's Theses - Daytona Beach
Development of a multidisciplinary design optimization (MDO) of a large scale hybrid composite wind turbine blade is performed. Multiple objectives are considered in the MDO process to maximize annual energy production and lifetime profit, minimize weight and power production rate. A wind turbine blade is divided into regions and the layup sequences for each region are considered as design variables. The scale of wind turbine blade is also considered to find the optimum size of a wind turbine blade. Applied loads due to extreme wind conditions for rotor rotation and rotor stop condition are considered for finite element analysis (FEA) …
Effect Of Thermally Induced Deformation In A Supersonic Combustion Facility, Aditya Ajit Gupte
Effect Of Thermally Induced Deformation In A Supersonic Combustion Facility, Aditya Ajit Gupte
Master's Theses - Daytona Beach
Nastran and ANSYS finite element analysis (FEA) and Wind-US computational fluid dynamics (CFD) solvers are used to simulate the effect of thermal deformation on the reacting flow developing within the University of Virginia (UVa) Supersonic Combustion Facility (SCF). A detailed thermal-structural model is developed to resolve the temperature distribution and the resulting structural deformation taking place within the scramjet engine flowpath. The predicted thermal deformation is used to refine the CFD model and produce a new set of results for direct comparison with experiment during both ramjet and scramjet modes of operation. Improved agreement between CFD and experiment is afforded …