ULTRASONIC MONITORING OF THERMALLY CURING RESINS WITH THE USE OF SHEAR WAVE REFLECTIVITY.

F. Cohen-Tenoudji; W. J. Pardee; B. R. Tittmann; L. A. Ahlberg; R. K. Elsley

doi:10.1109/ultsym.1985.198567

ULTRASONIC MONITORING OF THERMALLY CURING RESINS WITH THE USE OF SHEAR WAVE REFLECTIVITY.

F. Cohen-Tenoudji, W. J. Pardee, B. R. Tittmann, L. A. Ahlberg, R. K. Elsley

Engineering Science and Mechanics

Research output: Contribution to journal › Conference article › peer-review

2 Scopus citations

Abstract

A technique is presented for estimating the state of viscosity of a thermally curing resin. The resin's complex shear modulus at 1 MHz is derived from the measured reflection coefficient of shear wave pulses at the tool-resin interface. A special transducer-buffer assembly that operates at high temperature and provides a reference calibration signal has been developed. With this assembly, absolute determinations are made throughout the cure cycle of the storage (real) and loss (imaginary) components of the shear modulus. The high-frequency dynamic viscosity is calculated from the latter. Comparison with data obtained at low shear rates with a 10-Hz torque viscometer indicates the feasibility of using the high-frequency technique to monitor the rheological properties of thermally curing resins.

Original language	English (US)
Pages (from-to)	535-542
Number of pages	8
Journal	Ultrasonics Symposium Proceedings
DOIs	https://doi.org/10.1109/ultsym.1985.198567
State	Published - 1985

All Science Journal Classification (ASJC) codes

Engineering(all)

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10.1109/ultsym.1985.198567

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title = "ULTRASONIC MONITORING OF THERMALLY CURING RESINS WITH THE USE OF SHEAR WAVE REFLECTIVITY.",

abstract = "A technique is presented for estimating the state of viscosity of a thermally curing resin. The resin's complex shear modulus at 1 MHz is derived from the measured reflection coefficient of shear wave pulses at the tool-resin interface. A special transducer-buffer assembly that operates at high temperature and provides a reference calibration signal has been developed. With this assembly, absolute determinations are made throughout the cure cycle of the storage (real) and loss (imaginary) components of the shear modulus. The high-frequency dynamic viscosity is calculated from the latter. Comparison with data obtained at low shear rates with a 10-Hz torque viscometer indicates the feasibility of using the high-frequency technique to monitor the rheological properties of thermally curing resins.",

author = "F. Cohen-Tenoudji and Pardee, {W. J.} and Tittmann, {B. R.} and Ahlberg, {L. A.} and Elsley, {R. K.}",

year = "1985",

doi = "10.1109/ultsym.1985.198567",

language = "English (US)",

pages = "535--542",

journal = "Ultrasonics Symposium Proceedings",

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T1 - ULTRASONIC MONITORING OF THERMALLY CURING RESINS WITH THE USE OF SHEAR WAVE REFLECTIVITY.

AU - Cohen-Tenoudji, F.

AU - Pardee, W. J.

AU - Tittmann, B. R.

AU - Ahlberg, L. A.

AU - Elsley, R. K.

PY - 1985

Y1 - 1985

N2 - A technique is presented for estimating the state of viscosity of a thermally curing resin. The resin's complex shear modulus at 1 MHz is derived from the measured reflection coefficient of shear wave pulses at the tool-resin interface. A special transducer-buffer assembly that operates at high temperature and provides a reference calibration signal has been developed. With this assembly, absolute determinations are made throughout the cure cycle of the storage (real) and loss (imaginary) components of the shear modulus. The high-frequency dynamic viscosity is calculated from the latter. Comparison with data obtained at low shear rates with a 10-Hz torque viscometer indicates the feasibility of using the high-frequency technique to monitor the rheological properties of thermally curing resins.

AB - A technique is presented for estimating the state of viscosity of a thermally curing resin. The resin's complex shear modulus at 1 MHz is derived from the measured reflection coefficient of shear wave pulses at the tool-resin interface. A special transducer-buffer assembly that operates at high temperature and provides a reference calibration signal has been developed. With this assembly, absolute determinations are made throughout the cure cycle of the storage (real) and loss (imaginary) components of the shear modulus. The high-frequency dynamic viscosity is calculated from the latter. Comparison with data obtained at low shear rates with a 10-Hz torque viscometer indicates the feasibility of using the high-frequency technique to monitor the rheological properties of thermally curing resins.

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DO - 10.1109/ultsym.1985.198567

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