Measuring and testing – Vibration – By mechanical waves
Reexamination Certificate
2008-08-25
2011-12-13
Williams, Hezron E (Department: 2856)
Measuring and testing
Vibration
By mechanical waves
C073S597000, C073S605000
Reexamination Certificate
active
08074518
ABSTRACT:
Systems (50) and methods for measuring and displaying a visual and/or graphical representation of the specific modulus (E/ρ) of a cellular ceramic body (10), such as those used to form particulate filters, are disclosed. The ultrasonic measurement system employs an ultrasonic transmitter (52T) and an ultrasonic receiver (52R) adjacent to, but spaced apart from respective ends (16, 18) of the ceramic body. Multiple ultrasonic waves (80) are sent through corresponding multiple longitudinal portions (12P) of the honeycomb structure (12), where adjacent longitudinal portions overlap. Time of flight (TOF) measurements (TOF1, TOF2), along with other parameters describing the ceramic body, allow for the measurement of the sonic speed (cmat) of the ultrasonic waves that pass through the ceramic body as well as the attenuation (IR). The specific modulus is then calculated from the square of the sonic speed (C2mat). The high resolution of the ultrasonic measurements allows for improved evaluation of the manufacturing process.
REFERENCES:
patent: 6964694 (2005-11-01), Rauchfuss et al.
patent: 2003/0057581 (2003-03-01), Lu et al.
patent: 2005/0247131 (2005-11-01), Breuer
patent: 2006/0266119 (2006-11-01), Cobb
patent: 2007/0113655 (2007-05-01), Reed
patent: 2007/0144260 (2007-06-01), Fei et al.
patent: 2007/0199380 (2007-08-01), Daoud
patent: 2007/0266547 (2007-11-01), Shi
patent: 2007/0266789 (2007-11-01), Hampton et al.
patent: 2007/0266790 (2007-11-01), Gunasekaran et al.
patent: 2008/0057267 (2008-03-01), Brocheton et al.
patent: 2006106011 (2006-04-01), None
Papadakis EP “Ultrasonic Wave Meausrements of Elastic Moduli and for Product Development and Design Calculations”; ASTM International, Standard Worldwide; ISSN: 0090-3973, May 1, 1998; Abstract Only.
Helfinstine John David
McIntosh Robert A
Noni Lisa M
Shi Zhiqiang
Widjaja Sujanto
Corning Incorporated
Miller Rose M
Santandrea Robert P.
Williams Hezron E
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