Systems and methods for measuring the specific modulus of cellular ceramic bodies
mat2matSystems and methods for measuring and displaying a visual and/or graphical representation of the specific modulus (E/ρ) of a cellular ceramic body, such as those used to form particulate filters, are disclosed. The ultrasonic measurement system employs an ultrasonic transmitter (T) and an ult...
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Sprache: | eng |
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Zusammenfassung: | mat2matSystems and methods for measuring and displaying a visual and/or graphical representation of the specific modulus (E/ρ) of a cellular ceramic body, such as those used to form particulate filters, are disclosed. The ultrasonic measurement system employs an ultrasonic transmitter (T) and an ultrasonic receiver (R) adjacent to, but spaced apart from respective ends of the ceramic body. Multiple ultrasonic waves are sent through corresponding multiple longitudinal portions (P) of the honeycomb structure, where adjacent longitudinal portions overlap. Time of flight (TOF) measurements (TOF, TOF), along with other parameters describing the ceramic body, allow for the measurement of the sonic speed (c) 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 (C). The high resolution of the ultrasonic measurements allows for improved evaluation of the manufacturing process. |
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