| Determination of superior surface strains and stresses, and vocal fold contact pressure in a synthetic larynx model using digital image correlation. | |
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MedLine Citation:
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PMID: 18247910 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Stresses and strains within the vocal fold tissue may play a critical role in voice fatigue, in tissue damage and resulting voice disorders, and in tissue healing. In this study, experiments were performed to determine mechanical fields on the superior surface of a self-oscillating physical model of the human vocal folds using a three-dimensional digital image correlation method. Digital images obtained using a high-speed camera together with a mirror system were used to measure displacement fields, from which strains, strain rates, and stresses on the superior surface of the model vocal folds were computed. The dependence of these variables on flow rate was established. A Hertzian impact model was used to estimate the contact pressure on the medial surface from superior surface strains. A tensile stress dominated state was observed on the superior surface, including during collision between the model folds. Collision between the model vocal folds limits the medial-lateral stress levels on the superior surface, in conjunction with compressive stress or contact pressure on the medial surface. |
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Authors:
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Mychal Spencer; Thomas Siegmund; Luc Mongeau |
Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 123 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2008 Feb |
Date Detail:
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Created Date: 2008-02-05 Completed Date: 2008-03-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1089-103 Citation Subset: IM |
Affiliation:
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School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Air Glottis / physiology Imaging, Three-Dimensional* Larynx / physiology* Mathematics Models, Anatomic* Motion Polymethyl Methacrylate Pressure* Rheology Silicone Elastomers Stress, Mechanical Vocal Cords / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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R01 DC005788/DC/NIDCD NIH HHS |
| Chemical | |
Reg. No./Substance:
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0/Silicone Elastomers; 9011-14-7/Polymethyl Methacrylate |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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