Modeling of ultrasonic processing
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2005.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2006
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| Online Access: | http://hdl.handle.net/1721.1/33738 |
| _version_ | 1826212316365979648 |
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| author | Zhao, Wenguang, S.M. Massachusetts Institute of Technology |
| author2 | David Roylance. |
| author_facet | David Roylance. Zhao, Wenguang, S.M. Massachusetts Institute of Technology |
| author_sort | Zhao, Wenguang, S.M. Massachusetts Institute of Technology |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2005. |
| first_indexed | 2024-09-23T15:19:48Z |
| format | Thesis |
| id | mit-1721.1/33738 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T15:19:48Z |
| publishDate | 2006 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/337382019-04-12T21:40:54Z Modeling of ultrasonic processing Zhao, Wenguang, S.M. Massachusetts Institute of Technology David Roylance. Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering. Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering. Civil and Environmental Engineering. Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2005. Includes bibliographical references (leaves 53-55). This paper presents a finite element analysis (FEA) of ultrasonic processing of an aerospace-grade carbon-epoxy composite laminate. An ultrasonic (approximately 30 kHz) loading horn is applied to a small region at the laminate surface, which produces a spatially nonuniform strain energy field within the material. A fraction of this strain energy is dissipated during each ultrasonic loading cycle depending on the temperature- dependent viscoelastic response of the material. This dissipation produces a rapid heating, yielding temperature increases over 100⁰C in approximately Is and permitting the laminate to be consolidated prior to full curing in an autoclave or other equipment. The spatially nonuniform, nonlinear, and coupled nature of this process, along with the large number of experimental parameters, makes trial-and-error analysis of the process intractable, and the FEA approach is valuable in process development and optimization. by Wenguang Zhao. S.M. 2006-07-31T15:29:02Z 2006-07-31T15:29:02Z 2005 2005 Thesis http://hdl.handle.net/1721.1/33738 65171237 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 75 leaves 2731489 bytes 2734603 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Civil and Environmental Engineering. Zhao, Wenguang, S.M. Massachusetts Institute of Technology Modeling of ultrasonic processing |
| title | Modeling of ultrasonic processing |
| title_full | Modeling of ultrasonic processing |
| title_fullStr | Modeling of ultrasonic processing |
| title_full_unstemmed | Modeling of ultrasonic processing |
| title_short | Modeling of ultrasonic processing |
| title_sort | modeling of ultrasonic processing |
| topic | Civil and Environmental Engineering. |
| url | http://hdl.handle.net/1721.1/33738 |
| work_keys_str_mv | AT zhaowenguangsmmassachusettsinstituteoftechnology modelingofultrasonicprocessing |