Matching Items (3)
Description
The goal of this research is to couple a physics-based model with adaptive algorithms to develop a more accurate and robust technique for structural health monitoring (SHM) in composite structures. The purpose of SHM is to localize and detect damage in structures, which has broad applications to improvements in aerospace technology. This technique employs PZT transducers to actuate and collect guided Lamb wave signals. Matching pursuit decomposition (MPD) is used to decompose the signal into a cross-term free time-frequency relation. This decoupling of time and frequency facilitates the calculation of a signal's time-of-flight along a path between an actuator and sensor. Using the time-of-flights, comparisons can be made between similar composite structures to find damaged regions by examining differences in the time of flight for each path between PZTs, with respect to direction. Relatively large differences in time-of-flight indicate the presence of new or more significant damage, which can be verified using a physics-based approach. Wave propagation modeling is used to implement a physics based approach to this method, which is coupled with adaptive algorithms that take into account currently existing damage to a composite structure. Previous SHM techniques for composite structures rely on the assumption that the composite is initially free of all damage on both a macro and micro-scale, which is never the case due to the inherent introduction of material defects in its fabrication. This method provides a novel technique for investigating the presence and nature of damage in composite structures. Further investigation into the technique can be done by testing structures with different sizes of damage and investigating the effects of different operating temperatures on this SHM system.
ContributorsBarnes, Zachary Stephen (Author) / Chattopadhyay, Aditi (Thesis director) / Neerukatti, Rajesh Kumar (Committee member) / Barrett, The Honors College (Contributor) / Department of English (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)
Created2015-05
Description
Drawing on existing scholarship as well as primary analytical materials, the research within this report demonstrates Wile E. Coyote's character is reliant on human connectivity and is evocative of the human condition, reflecting his disciplined and stylized design he possesses. Comprised of literary, film/media, and rhetorical elements, this report illustrates how Wile E. is an individual whose character holds various influences that provide dimensionality to his existence. The research within this report is both primary and secondary through observational recordings about the cartoons Wile E. appears in and through thorough analysis of texts elaborating on the elements comprising Wile E.'s character. Primary research from the initial observational recordings provides direction for the secondary research after viewing multiple cartoons and films containing Wile E. Coyote in his Warner Brothers Studios appearances and noting unique moments in his cinematic career. The notes from this viewing of Wile E. in his natural "habitat" drive the secondary research to focus on specific aspects of Wile E.'s character through the analysis of supporting texts which ultimately leads to the findings within this report. Research in the fields of literature, film/media studies, and rhetoric shape the analysis of Wile E.'s character as this report studies the various components compiled within the cartoon coyote. As a multifaceted individual, Wile E. illustrates a complexity within a stylized character that allows viewers to connect to his plights and to identify with his struggles. Through his emulative form, Wile E. embodies vital elements of character creation that allow him to become a memorable and prominent character that resonates in viewers and artists. From Wile E. Coyote's example, future generations of story tellers, regardless of their medium, can learn how to create similarly iconic and timeless characters within their works. Such stories can then contribute significant additions to popular narrative and characterization.
ContributorsGarza, Christopher Aaron (Author) / Baldini, Cajsa (Thesis director) / Mack, Robert (Committee member) / Sandler, Kevin (Committee member) / Department of English (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
With this thesis, I have set out to answer two fundamental questions within music: does music mean anything, and should music mean anything? In answering those questions, I also set out to create a creative project that would implement these ideas: an original concept album of music that is programmatic in nature and incorporates motivic composition, jazz improvisation, lyrics, extra-musical audio and more all in the service of telling a narrative, a story, through music. I have done research into understanding music as a language, finding that this language is primarily communicative and recreational, rather than representational, of meaning. As well, I discuss the various different ways that music composers from Wagner to Williams have created narrative meaning in their works, using examples of leitmotif and other devices, as well as tracing the contextual associations of meaning that occurs when music is perceived in certain contexts. Furthermore, I discuss the dialogue between absolute and programmatic music, and also talk about the role of jazz improvisation in adding meaning to works.
For the second part of my thesis I talk about how I came to create the creative project aspect. I discuss how and why I designed the narrative that I did, and also analyzed the music I have created to illustrate how I implemented the various methods of musical storytelling that I detail in the first part of the paper. Lastly, I discuss my plans for publication and release of the creative project.
The third part of this thesis is a sample of the creative project. There is a version of the narrative that goes along with the creative project, as well as one of the eight pieces of original music on the creative project, entitled Journey.
Overall, I found that music does have meaning, it is just meaning that society ascribes to it based off of artistic intent and context, and as to whether music should mean anything, I believe that this is a question best left to be answered on an individual basis. Music can be whatever it wants to be.
For the second part of my thesis I talk about how I came to create the creative project aspect. I discuss how and why I designed the narrative that I did, and also analyzed the music I have created to illustrate how I implemented the various methods of musical storytelling that I detail in the first part of the paper. Lastly, I discuss my plans for publication and release of the creative project.
The third part of this thesis is a sample of the creative project. There is a version of the narrative that goes along with the creative project, as well as one of the eight pieces of original music on the creative project, entitled Journey.
Overall, I found that music does have meaning, it is just meaning that society ascribes to it based off of artistic intent and context, and as to whether music should mean anything, I believe that this is a question best left to be answered on an individual basis. Music can be whatever it wants to be.
ContributorsPrice, Alexander (Author) / Gilfillan, Daniel (Thesis director) / Kocour, Michael (Committee member) / Libman, Jeffrey (Committee member) / Department of English (Contributor) / School of Music (Contributor) / Barrett, The Honors College (Contributor)
Created2019-05