Linda Franzoni

Research Interests

Acoustics of enclosures, underwater acoustics, structural dynamics and vibration.

Bio

Professor Franzoni's research areas include: acoustics, and structural dynamics and vibration. Practical applications of this work include: acoustics of enclosures (rooms or vehicle interiors) and underwater acoustics (acoustic radiation and scattering from submarines).

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Professor Franzoni's interior noise research has focused on developing improved methods for predicting sound pressure levels in acoustic spaces which contain high-frequency sound waves with moderate damping. For these types of sound fields, accurate prediction methods currently require extensive computational effort. Professor Franzoni's research goal is to develop computationally efficient methods that provide the acoustician with a fairly detailed description of the sound field.

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Professor Franzoni's work in underwater acoustics has focused on applying Bliss' method of Analytical/Numerical Matching (ANM) to the prediction of acoustic radiation and scattering from flexible elastic submerged structures with discontinuities. Work is underway to implement this method in existing Navy computer codes. A recent extension of this work is a novel method for the homogenization of structures using a local/global decomposition method. The result is a reduction in computational effort for certain types of problems.

Education

• B.S. Yale University, 1980
• M.S. Duke University, 1988
• Ph.D. Duke University, 1991

Positions

• Professor of the Practice in the Thomas Lord Department of Mechanical Engineering and Materials Science
• Associate Dean of Undergraduate Education

Courses Taught

• ME 499: Undergraduate Research Seminar Series
• ME 424L: Mechanical Systems Design
• ME 421L: Mechanical Design
• HOUSECS 59: House Course
• EGR 590: Special Topics in Engineering
• EGR 101L: Engineering Design and Communication

Publications

• Santillan ST, Franzoni LP, Tantum SL. Work in Progress: Evaluation of 360 Coaching to Support Whole-Student Advising in the First-Year. In: ASEE Annual Conference and Exposition, Conference Proceedings. 2023.
• Raudales D, Bliss DB, Michalis KA, Rouse JW, Franzoni LP. Benchmark analytical solutions for steady state high frequency broadband sound fields in three rectangular enclosures. The Journal of the Acoustical Society of America. 2019 Apr;145(4):2601.
• Michalis K, Bliss D, Franzoni L. Prediction and modification of broadband interior noise in enclosures using energy-intensity bem and absorption scaling. 2008 Proceedings of the NoiseCon/ASME NCAD, NCAD 2008. 2009 Oct 16;339–47.
• Burton LJ, Bliss DB, Franzoni LP. Sound attenuation and prediction of porous media properties in hybrid ducts utilizing spatially periodic area changes. 2008 Proceedings of the NoiseCon/ASME NCAD, NCAD 2008. 2009 Oct 16;363–71.
• Bliss D, Franzoni L, Michalis K. Characterization of high frequency radiation from panels subject to broadband excitation. 2008 Proceedings of the NoiseCon/ASME NCAD, NCAD 2008. 2009 Oct 16;357–61.
• He Q, Bliss DB, Franzoni L. Noise reduction strategies using multi-element flexible structures. 2008 Proceedings of the NoiseCon/ASME NCAD, NCAD 2008. 2009 Oct 16;373–83.
• Burton LJ, Bliss DB, Franzoni LP. Sound attenuation and prediction of porous media properties in hybrid ducts utilizing spatially periodic area changes. American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCAD. 2008 Dec 1;363–71.
• He Q, Bliss DB, Franzoni L. Noise reduction strategies using multi-element flexible structures. American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCAD. 2008 Dec 1;373–82.
• Michalis K, Bliss D, Franzoni L. Prediction and modification of broadband interior noise in enclosures using energy-intensity bem and absorption scaling. American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCAD. 2008 Dec 1;339–47.
• Bliss D, Franzoni L, Michalis K. Characterization of high frequency radiation from panels subject to broadband excitation. American Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCAD. 2008 Dec 1;357–61.
• Schaad DE, Franzoni LP, Paul C, Bauer A, Morgan K. A perfect storm: Examining natural disasters by combining traditional teaching methods with service-learning and innovative technology. International Journal of Engineering Education. 2008 Jul 28;24(3):450–65.
• Huettel LG, Forbes J, Franzoni L, Malkin R, Nadeau J, Nightingale K, et al. Transcending the traditional: Using tablet PCs to enhance engineering and computer science instruction. In: Proceedings - Frontiers in Education Conference, FIE. 2007.
• Bliss DB, Rouse JW, Franzoni LP. Prediction of broadband sound fields in enclosures by decomposition in powers of an absorption parameter. 12th International Congress on Sound and Vibration 2005, ICSV 2005. 2005 Dec 1;2:1213–20.
• Rouse J, Franzoni L. Improvement of a high-frequency broadband energy-intensity boundary element method to include high resolution specular reflection. Journal of Computational Acoustics. 2005 Mar 1;13(1):99–125.
• Park CD, Franzoni LP, Bliss DB. Analytical-numerical matching for fluid-loaded structures with discontinuities. Journal of the Acoustical Society of America. 2004 Nov 1;116(5):2956–68.
• Franzoni L. Assessment of the contribution of panel vibration to airframe noise. AIAA Journal. 2004 Jan 1;42(8):1522–8.
• Franzoni LP, Bliss DB, Park CD. Efficient calculation of vibration and radiation from fluid-loaded structures with discontinuities using analytical-numerical matching. Proceedings of the Tenth International Congress on Sound and Vibration. 2003 Dec 1;1555–62.
• Franzoni LP, Elliott CM. An angle-by-angle approach to predicting broadband high-frequency sound fields in rectangular enclosures with experimental comparison. Journal of the Acoustical Society of America. 2003 Oct 1;114(4 I):1968–79.
• Franzoni LP, Bliss DB, Rouse JW. An acoustic boundary element method based on energy and intensity variables for prediction of high-frequency broadband sound fields. Journal of the Acoustical Society of America. 2001 Dec 29;110(6):3071–80.
• Franzoni LP. A power conservation approach to predict the spatial variation of the cross-sectionally averaged mean-square pressure in reverberant enclosures. Journal of the Acoustical Society of America. 2001 Dec 29;110(6):3055–63.
• Park CD, Franzoni LP. Using analytical/numerical matching with finite element analysis to solve a fluid-loaded structural dynamics problem. American Society of Mechanical Engineers, Dynamic Systems and Control Division (Publication) DSC. 2000 Dec 1;68:253–61.
• Franzoni L, Bliss D. An estimate of airframe noise caused by structural vibration. 6th Aeroacoustics Conference and Exhibit. 2000 Dec 1;
• Franzoni L, Bliss D, Rouse J. Energy based boundary element method for broadband high frequency sound fields. 6th Aeroacoustics Conference and Exhibit. 2000 Dec 1;
• Park CD, Franzoni LP. Using analytical/numerical matching with finite element analysis to solve a fluid-loaded structural dynamics problem. In: ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE). 2000. p. 253–61.
• Franzoni LP, Park CD. An illustration of analytical/numerical matching with finite-element analysis for structural vibration problems. Journal of the Acoustical Society of America. 2000 Jan 1;108(6):2856–64.
• Franzoni L, Bliss D. An estimate of airframe noise caused by structural vibration. In: 6th Aeroacoustics Conference and Exhibit. 2000.
• Franzoni L, Bliss D, Rouse J. Energy based boundary element method for broadband high frequency sound fields. In: 6th Aeroacoustics Conference and Exhibit. 2000.
• Franzoni LP, Labrozzi DS. A study of damping effects on spatial distribution and level of reverberant sound in a rectangular acoustic cavity. Journal of the Acoustical Society of America. 1999 Aug 20;106(2):802–15.
• Franzoni LP, Elliott CM. An innovative design of a probe-tube attachment for a 1/2 -in. microphone. Journal of the Acoustical Society of America. 1998 Nov 1;104(5):2903–10.
• Franzoni LP, Bliss DB. A discussion of modal uncoupling and an approximate closed-form solution for weakly coupled systems with application to acoustics. Journal of the Acoustical Society of America. 1998 Apr 1;103(4):1923–32.
• Franzoni LP, Dowell EH. On the accuracy of modal analysis in reverberant acoustical systems with damping. Journal of the Acoustical Society of America. 1995 Jan 1;97(1):687–90.

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