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Filtering by: Alt title Directions for sending insects Remove constraint Alt title: Directions for sending insects Degree Field Mechanical Engineering Remove constraint Degree Field: Mechanical Engineering Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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  • Reduced order modeling of legged locomotion in the horizontal plane

    Creator:
    Wickramasuriya, Gamika Arun
    Abstract:
    Sprawled-posture insects exhibit a remarkable ability to rapidly run in a stable manner over complex terrain, a feat that has yet to be equaled by man-made legged robots. Recent experimental results suggest that these insects may employ a hierarchical control structure, in which locomotion performance emerges from a combination of...
    Resource Type:
    Dissertation
    Full Text:
    the sagittal [4, 5, 50, 18] and lateral planes [43, 42, 41] for a variety of animals and insects

  • Experimental and analytical characterization of bidirectional reflectance data for engineering materials

    Creator:
    Zaworski, Joseph Robert
    Abstract:
    Bidirectional reflectance is a fundamental property used for the analysis of radiative heat transfer. It is a form of reflectivity in which the spectral and directional dependencies of both the beam incident on a surface and the beam reflected from the surface are specified. A new system has been designed...
    Resource Type:
    Dissertation
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    about the sample to change the measured reflected beam direction. Redacted for Privacy The system

  • Rational Fuel Design for Low Temperature Internal Combustion Engines

    Creator:
    Daly, Shane R.
    Abstract:
    This work introduces a new methodology to design transportation fuels offering improved efficiency and reduced emissions, aimed to complement both traditional and emerging engine technologies. Many of these emerging technologies are centered around exploiting low temperature combustion (LTC) strategies that offer improved efficiency and reduced emissions. However, a standardized fuel...
    Resource Type:
    Dissertation
    Full Text:
    direction for designing high efficiency, next-generation combustion systems. ©Copyright by Shane Daly

  • Geometric Motion Planning for Inertial Systems

    Creator:
    Faraji, Hossein
    Abstract:
    In order to enable better visualization and understanding of the effect of the robot's geometry and inertia on the robot's trajectories, this dissertation proposes to use geometric mechanics to bridge the gap between the physical motion of a robot and its mathematical structure. The main focus of this research is...
    Resource Type:
    Dissertation
    Full Text:
    direction of velocity for a puck with a 45◦ tether attached at the center of mass, as a function of the

  • A relationship between wave dispersion and fracture strength for a composite material

    Creator:
    Ilcewicz, Larry Bert
    Abstract:
    Wave dispersion and fracture are phenomena that involve. mechanisms triggered at the scale of a material's internal structure. Experiments were performed with a candidate material to judge the hypothesis that wave dispersion measurements can be used to nondestructively predict fracture strength. Wood-based particleboard was chosen as the candidate material because...
    Resource Type:
    Dissertation
    Full Text:
    ultrasonics. Wave dispersion and fracture were studied in detail for the weak direction of particleboard

  • Dynamics and control for spring-mass legged robots

    Creator:
    Vejdani Noghreiyan, Hamid Reza
    Abstract:
    The objective of this study is to propose control strategies for legged robots to walk and run naturally like humans and animals. To achieve this goal, we use the spring-mass model for the legged robots to be able to create the same dynamics in the leg as humans and animals....
    Resource Type:
    Dissertation
    Full Text:
    Dynamics and Control for Spring-Mass Legged Robots

  • Automated decomposition of complex parts for manufacturing with advanced joining processes

    Creator:
    Massoni, Brandon R.
    Abstract:
    Recent advancements in joining operations and additive manufacturing now allow complex metal parts to be built up from raw materials, as opposed to being machined down from solid blocks. This not only opens up the design space, but also allows for much more efficient manufacturing. By decomposing a complex part...
    Resource Type:
    Dissertation
    Full Text:
    ) ...............................................................................56 Figure 37: These three directions have the lowest cost manufacturing plans for one cutting

  • A study of laser generated Rayleigh and Lamb waves in graphite/epoxy composites

    Creator:
    Park, Heeyong
    Abstract:
    The application of laser generated ultrasonics was first demonstrated in the mid-seventies and has shown good potential when applied to isotropic materials. However, its use with composite materials is still in the early stages of development. This study explores the potential for application of laser generated Rayleigh and Lamb waves...
    Resource Type:
    Dissertation
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    measurements. The Rayleigh wave velocity was measured at various directions relative to the fiber direction

  • From running birds to walking robots : optimization as a unifying framework for dynamic bipedal locomotion

    Creator:
    Hubicki, Christian M.
    Abstract:
    Bipedal locomotion is a complex phenomenon to understand and control, making it difficult for legged robots to achieve the speed, agility, efficiency, and robustness of their animal counterparts. This thesis argues for the use of numerical optimization to investigate and implement bipedal control as it applies to biology, dynamical models,...
    Resource Type:
    Dissertation
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    Unifying Framework for Dynamic Bipedal Locomotion AN ABSTRACT OF THE THESIS OF Christian M. Hubicki

  • Orb Web Vibrations: Modeling, Localization, and Measurement

    Creator:
    Otto, Andrew W.
    Abstract:
    The orb web is a multipurpose structure---serving as a home for its inhabitant spider, as a prey capture device, and as a physical extension of the spider’s sensing abilities. Biologists are particularly interested in the spider’s ability to locate prey trapped in its web by sensing the vibrations induced from...
    Resource Type:
    Dissertation
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    (a, c, e) and average flow velocity in the y-direction (b, d, f) for the three webs tested in the