Modal interaction in ultrasonic systems

Andrea Cardoni; Fannon Lim; Margaret Lucas; Matthew Cartmell

Modal interaction in ultrasonic systems

Andrea Cardoni, Fannon Lim, Margaret Lucas, Matthew Cartmell

Research output: Contribution to conference › Paper › peer-review

Abstract

High power ultrasonic systems are used in industrial applications such as welding and cutting. Common reliability problems, such as noise and component failures, often stem from participation of untuned modes in the driving mode due to nonlinear behaviour. A preliminary theoretical investigation to reduce the system nonlinearities is presented for the case of two Duffing oscillators. Experimental application of the theory to an ultrasonic cutting system demonstrates the validity of manipulating the nonlinear characteristics via ‘Nonlinear Cancellation Coupling’. Further, modal interactions in the form of combination resonances are characterised experimentally.

Original language	English
Publication status	Published - 16 Sep 2002
Event	Forum Acusticum Sevilla - Seville, Spain Duration: 16 Sep 2002 → 20 Sep 2002

Conference

Conference	Forum Acusticum Sevilla
Country	Spain
City	Seville
Period	16/09/02 → 20/09/02

Keywords

ultrasonic systems
nonlinear behaviour
Duffing oscillators

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@conference{df697479b0814549809458076b713fff,

title = "Modal interaction in ultrasonic systems",

abstract = "High power ultrasonic systems are used in industrial applications such as welding and cutting. Common reliability problems, such as noise and component failures, often stem from participation of untuned modes in the driving mode due to nonlinear behaviour. A preliminary theoretical investigation to reduce the system nonlinearities is presented for the case of two Duffing oscillators. Experimental application of the theory to an ultrasonic cutting system demonstrates the validity of manipulating the nonlinear characteristics via {\textquoteleft}Nonlinear Cancellation Coupling{\textquoteright}. Further, modal interactions in the form of combination resonances are characterised experimentally.",

keywords = "ultrasonic systems, nonlinear behaviour, Duffing oscillators",

author = "Andrea Cardoni and Fannon Lim and Margaret Lucas and Matthew Cartmell",

year = "2002",

month = sep,

day = "16",

language = "English",

note = "Forum Acusticum Sevilla ; Conference date: 16-09-2002 Through 20-09-2002",

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TY - CONF

T1 - Modal interaction in ultrasonic systems

AU - Cardoni, Andrea

AU - Lim, Fannon

AU - Lucas, Margaret

AU - Cartmell, Matthew

PY - 2002/9/16

Y1 - 2002/9/16

N2 - High power ultrasonic systems are used in industrial applications such as welding and cutting. Common reliability problems, such as noise and component failures, often stem from participation of untuned modes in the driving mode due to nonlinear behaviour. A preliminary theoretical investigation to reduce the system nonlinearities is presented for the case of two Duffing oscillators. Experimental application of the theory to an ultrasonic cutting system demonstrates the validity of manipulating the nonlinear characteristics via ‘Nonlinear Cancellation Coupling’. Further, modal interactions in the form of combination resonances are characterised experimentally.

AB - High power ultrasonic systems are used in industrial applications such as welding and cutting. Common reliability problems, such as noise and component failures, often stem from participation of untuned modes in the driving mode due to nonlinear behaviour. A preliminary theoretical investigation to reduce the system nonlinearities is presented for the case of two Duffing oscillators. Experimental application of the theory to an ultrasonic cutting system demonstrates the validity of manipulating the nonlinear characteristics via ‘Nonlinear Cancellation Coupling’. Further, modal interactions in the form of combination resonances are characterised experimentally.

KW - ultrasonic systems

KW - nonlinear behaviour

KW - Duffing oscillators

M3 - Paper

T2 - Forum Acusticum Sevilla

Y2 - 16 September 2002 through 20 September 2002

ER -