IMAGE ACOUSTICS, INC.

“End driven bender transducer,” J. Acoust. Soc. Am., 141, 4016(A), (2017)

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“Transducers and Arrays for Underwater Sound,” 2nd Ed. J.L. Butler and C.H. Sherman (Springer NY, 2016)

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“Dipole transducer enhancement from a passive resonator,” J. Acoust. Soc. Am., 136, 2472-2477, (2014) J.L. Butler, A.L. Butler and V.B. Curtis

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“Thermal model for piezoelectric transducers,” J. Acoust. Soc. Am., 132, 2161-2164, (2012) J.L. Butler, A.L. Butler and S.C. Butler

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“Transducer figure of merit,” J. Acoust. Soc. Am., 136, 2158-2160, (2012) J.L. Butler

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“The modal projector,” J. Acoust. Soc. Am., 129, 1881-1889, (2011) J.L. Butler, A.L. Butler and S.C. Butler

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“A tri-modal directional transducer,” J. Acoust. Soc. Am., 115, 658-665, (2004) J.L. Butler, A.L. Butler and J.A. Rice

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“Cantilever mode piston transducer array,” J. Acoust. Soc. Am., 133, 3360(A), (2013) J.L. Butler and A.L. Butler

 

“Doubly steered array of modal transducers,” J. Acoust. Soc. Am., 132, 1985(A), (2012) J.L. Butler, A.L. Butler and M.J. Ciufo

 

“Thermal model for piezoelectric transducers,” J. Acoust. Soc. Am., 132, 2161-2164, (2012) J.L. Butler, A.L. Butler and S.C. Butler

 

“Transducer figure of merit,” J. Acoust. Soc. Am., 132, 2158-2160, (2012) J.L. Butler

  

“The modal projector,” J. Acoust. Soc. Am., 129, 1881-1889 (2011) J.L. Butler, A.L. Butler and S.C. Butler

 

"Leveraged motion underwater sound piston transducers," J. Acoust. Soc. Am. 123, 3013(A), (2008) J.L. Butler and A.L. Butler

 

"Transducers and Arrays for Underwater Sound," C.H. Sherman and J.L. Butler (Springer, NY, 2007)

 

"A tri-modal directional transducer," J. Acoust. Soc. Am. 115, 658-665, (2004) J.L. Butler, A.L. Butler and J.A. Rice

 

“Multiport Underwater Sound Transducer,” Sea Technology, 31-34, November 2003, J.L. Butler and A.L. Butler

 

"A Fourier series solution for the radiation impedance of a finite cylinder," J. Acoust. Soc. Am. 104, 2773-2778 (1998) J.L. Butler and A.L. Butler

 

"Analysis of harmonic distortion in electroacoustic transducers under indirect drive conditions," J. Acoust. Soc. Am. 101, 297-314 (1997) J.L. Butler, C.H. Sherman and A.L. Butler

 

"A low frequency directional flextensional transducer and line array," J. Acoust. Soc. Am. 102, 308-314 (1997) J.L. Butler, A.L. Butler, S.C. Butler and G.H. Cavanagh

 

"The Rebirth of a Ribbon Tweeter," J. Acoust. Soc. Am. 101, 3072 (A) (1997) A.L. Butler and J.L. Butler, Presented at the 133rd meeting of the Acoustical Society of America (June, 1997) Penn State University

 

"Piezoelectric ceramic mechanical and electrical stress study," J. Acoust. Soc. Am. 96 , 1914-1917 (1994) John L. Butler and K.D. Rolt

 

"Analysis of harmonic distortion in electroacoustic transducers," J. Acoust. Soc. Am. 98 , 1596 (1995) , John L. Butler and Charles H. Sherman

 

"Harmonic distortion in moving coil transducers caused by generalized Coulomb damping," J. Acoust. Soc. Am. 96 , 937-943 (1994) John L. Butler and C.H. Sherman

 

"Near-field and far-field measurements of a ribbon tweeter/midrange" A.L. Butler and J.L. Butler, Presented at the 130th meeting of the Acoustical Society of America (Nov., 1995) St. Louis

 

"A finite element method for estimating the effective coupling coefficient of magnetostrictive transducers," J. Acoust. Am. 95 , 2533-2535 (1994) John L. Butler, M.B. Moffett and K.D. Rolt

 

"Perturbation analysis of nonlinear effects in moving coil transducers," J. Acoust. Soc. Am 94 , 2485-2496 (1993) John L. Butler and C.H Sherman

 

"Hybrid magnetostrictive/piezoelectric tonpilz transducer," J. Acoust. Soc. Am. 94 , 636-641 (1993) , John L. Butler, A.L. Butler and S.C. Butler

 

"Finite element modulus substitution method", in Transducers for Sonics and Ultrasonics , (Technomic Publ., Lancaster, PA, 1993) John L. Butler and K.D. Rolt

 

"Directional flextensional transducer," J. Acoust. Soc. Am. 92 , 2977-2979 (1992) , John L. Butler, S. C. Butler and A. L. Butler

 

"A Fourier transform solution for the acoustic radiation from a source near an elastic cylinder," J. Acoust. Soc. Am. 89, 2774-2785 (1991) , John L. Butler and David T. Porter

 

"Unidirectional magnetostrictive/piezoelectric hybrid transducer" J. Acoust. Soc. Am. 88 , 7-11 (1990) , John L. Butler, S.C. Butler and Arthur E. Clark

 

"The effect of electrode stiffness on the piezoelectric and elastic constants of a piezoelectric bar," J. Acoust. Soc. Am. 83 , 805-811 (1988) , John L. Butler, Mark B. Moffett and Donald Ricketts

 

"Eddy current loss factor series for magnetostrictive rods," J. Acoust. Soc. Am. 82 , 378 (1987) , John L. Butler and Nicholas L. Lizza

 

"Rare-earth iron “square ring” dipole transducer," J. Acoust. Soc. Am. 72 , 313-315 (1982) , John L. Butler and Susan M. Cohick

 

"An array model for transducers with flexing heads," J. Acoust. Soc. Am. 70 , 620-621 (1981) , John L. Butler and Willie D. Brown

 

"Radiating head flexure and its effect on transducer performance," J. Acoust. Soc. Am. 70 , 500-503 (1981) , John L. Butler, John R. Cipolla and Willie D. Brown

 

"Rare earth iron octagonal transducer," J. Acoust. Soc. Am. 67 , 1809-1811 (1980) , John L. Butler and S.J. Ciosek

 

“Maximum sound pressure from a displacement limited circular piston” J. Acoust. Soc. Am. 65 , 1579-1581 (1979) , John L. Butler