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Articles 1 - 9 of 9
Full-Text Articles in Engineering
Machine Components Test, Brandon Younger, Lauren Romero, Carlos Padilla
Machine Components Test, Brandon Younger, Lauren Romero, Carlos Padilla
Mechanical Engineering
To enhance California Polytechnic State University’s Mechanical Engineering program, Dr. Schuster has sponsored Brandon Younger, Lauren Romero, and Carlos Padilla to design and develop a new lab for students in the Intermediate Design class to test real mechanical components. This report discusses the background and ideation process that lead to the development of the Educational Mechanical Breadboard for Transmission System Components (Machine Components Test). Additionally, detailed drawings, 3D modeling, testing plans, and analysis are included to show how the Machine Components Test design will work and be validated.
Underwater Rope Fatigue Testing Machine, Napoleon Nino, Andrew Pimentel
Underwater Rope Fatigue Testing Machine, Napoleon Nino, Andrew Pimentel
Mechanical Engineering
The design and fabrication of an underwater rope fatigue testing machine meant to simulate the effects of an oceanic environment and the effects on rope.
Mechanical Characterization Of Carbon Fiber And Thermoplastic Ankle Foot Orthoses, Amanda Wach
Mechanical Characterization Of Carbon Fiber And Thermoplastic Ankle Foot Orthoses, Amanda Wach
Master's Theses (2009 -)
The needs of an increasingly young and active orthotic patient population has led to advancements in ankle foot orthosis (AFO) design and materials to enable higher function. The Intrepid Dynamic Exoskeletal Orthosis (IDEO) is a custom energy-storing carbon fiber AFO that has demonstrated improved clinical function, allowing patients to return to high-intensity activities such as sports and military service. An improved understanding of AFO mechanical function will aid prescription and fitting, as well as assist in design modifications for different patient populations. This study investigated the mechanical properties of AFOs, specifically structural stiffness, rotational motion, and strut deflection, to discern …
Continuum Robots For Space Applications Based On Layer-Jamming Scales With Stiffness Capability, Jessie Lee C. Santiago
Continuum Robots For Space Applications Based On Layer-Jamming Scales With Stiffness Capability, Jessie Lee C. Santiago
All Theses
Continuum robots, which have continuous mechanical structures comparable to the flexibility in elephant trunks and octopus arms, have been primarily geared toward the medical and defense communities. In space, however, NASA projects these robots to have a place in irregular inspection routines. The inherent compliance and bending of these continuum arms are especially suitable for inspection in obstructed spaces to ensure proper equipment functionality. In this paper, we propose a new solution that improves on the functionality of previous continuum robots, via a novel mechanical scaly layer-jamming design. Layer-jamming assisted continuum arms have previously required pneumatic sources for actuation, which …
Effect Of Manufacturing Processes On The Loss Factor And Other Mechanical Properties Of Kenaf Fiber-Reinforced Composites, Brian P. Spackman
Effect Of Manufacturing Processes On The Loss Factor And Other Mechanical Properties Of Kenaf Fiber-Reinforced Composites, Brian P. Spackman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The characteristics essential for manufacturing parts and products are not well known for natural fiber-reinforced composite materials. Natural fibers display properties similar to glass fibers, and present a more environmentally friendly option for manufacturing composite materials. This research investigates various parameters in the manufacture of kenaf fiber-reinforced composites including cure time, density, matrix hardener ratio, surface treatment, and fiber length and examines the effect they have on mechanical properties of the composite material. Several samples were created and subjected to a vibrational test. Using known relationships, mechanical properties were extracted from the test results. Samples were found to exhibit repeatable …
Defeating Anisotropy In Material Extrusion 3d Printing Via Materials Development, Ángel Ramón Torrado Pérez
Defeating Anisotropy In Material Extrusion 3d Printing Via Materials Development, Ángel Ramón Torrado Pérez
Open Access Theses & Dissertations
Additive Manufacturing technologies has been in continuous development for more than 35 years. Specifically, the later denominated Material Extrusion Additive Manufacturing (MEAM), was first developed by S. Scott Crump around 1988 and trademarked later as Fused Deposition Modeling (FDM). Although all of these technologies have been around for a while, it was not until recently that they have been more accessible to everyone. Today, the market of 3D printers covers all ranges of price, from very specialized, heavy and expensive machines, to desktop printers of only a few cubic inches in volume. Until recently, FDM technology had remained somewhat stagnant …
Mechanical And Optical Characterization Of Tungsten Oxynitride (W-O-N) Nano-Coatings, Oscar Roberto Nunez
Mechanical And Optical Characterization Of Tungsten Oxynitride (W-O-N) Nano-Coatings, Oscar Roberto Nunez
Open Access Theses & Dissertations
Aation and cation doping of transition metal oxides has recently gained attention as a viable option to design materials for application in solar energy conversion, photo-catalysis, transparent electrodes, photo-electrochemical cells, electrochromics and flat panel displays in optoelectronics. Specifically, nitrogen doped tungsten oxide (WO3) has gained much attention for its ability to facilitate optical property tuning while also demonstrating enhanced photo-catalytic and photochemical properties. The effect of nitrogen chemistry and mechanics on the optical and mechanical properties of tungsten oxynitride (W-O-N) nano-coatings is studied in detail in this work. The W-O-N coatings were deposited by direct current (DC) sputtering to a …
Bio-Hybrid Tubular Electrospun Scaffold For Vascular Tissue Engineering Application, Harsh Narendrakumar Patel
Bio-Hybrid Tubular Electrospun Scaffold For Vascular Tissue Engineering Application, Harsh Narendrakumar Patel
All ETDs from UAB
Atherosclerosis is an asymmetric thickening of the intima (innermost layer) of the artery due to plaque (a combination of lipids, debris, connective tissue elements and cells) build up causing the artery to become narrower and stiffer, resulting in a major hemodynamic disturbance[1, 2]. When atherosclerosis affects coronary arteries and prevents blood flow to the heart muscles posing a threat of, or a actual myocardial infarction, that condition is identified as coronary artery disease (CAD). To treat severely blocked coronary arteries,coronary artery bypass grafts (CABG) have became the gold standard for when angioplasty and stent placement has failed to unclog the …
Predictive Methods For End Of Life Prognosis In Composites, Vamsee Vadlamudi
Predictive Methods For End Of Life Prognosis In Composites, Vamsee Vadlamudi
Theses and Dissertations
The long-term properties of continuous fiber reinforced composite materials are increasingly important as applications in airplanes, cars, and other safety critical structures are growing rapidly. The mechanical, electrical, and thermal properties of composite materials are altered by the initiation and accumulation of discrete fracture events whose distribution and eventual interaction defines the limits of design, such as strength and life. There is a correlation that exists between the long term behavior of those materials under combined mechanical, thermal, and electrical fields, and the functional properties and characteristics of the composite materials that requires a fundamental understanding of the material state …