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Full-Text Articles in Physics
Directional Tensile Strength Of Carbon Fiber Reinforced Polylactic Acid In Extrusion Based Additive Manufacturing For Custom Failure Parts, Lucinda Slattery
Directional Tensile Strength Of Carbon Fiber Reinforced Polylactic Acid In Extrusion Based Additive Manufacturing For Custom Failure Parts, Lucinda Slattery
Honors College
Inherently, additive manufacturing printed parts have faults between layers perpendicular to the direction of printing, both in the plane parallel to the build plate and in the z direction (out of the build plate). For most parts, these “built-in” faults from the manufacturing process act as limiting conditions for the part's mechanical strength. While perpendicular to printing is typically the weakest due to layer adhesion faults, parallel to printing is typically the strongest due to cohesive material and fiber orientation. Fiber orientation can be measured through various methods, with the two explored being X-Ray Microscopy (XRM) for 3D analysis, and …
Thermal Stability Of Platinum-Silicon Alloy Films Grown On Langasite Substrates For Use In Microwave Acoustic Sensor Technology, Kell Fremouw
Honors College
Wireless sensors that can operate in temperatures up to 1000°C are widely needed for real time monitoring of large-scale industrial processes. Such sensors will improve efficiency and prevent component failure. Under previous work at UMaine, Surface Acoustic Wave Resonator (SAWR) sensors fabricated on piezoelectric langasite (La3Ga5SiO14) wafers have shown promise for wireless strain measurements at high temperatures. However, there is a major technical challenge in attaching SAWR langasite based sensors to metal parts because the large differences in the coefficient of thermal expansion (CTE) between langasite and metals leads to large thermal stresses and …