Paul Williams - Columbus OH Bradley M. Pankonin - Columbus OH
Assignee:
ABB Industrial Systems Inc. - Columbus OH
International Classification:
G01N 2918 G01N 2924
US Classification:
73 10V
Abstract:
The velocity or speed of ultrasonic energy in moving webs of material is measured on-line as the webs are manufactured by engaging and preferably scanning a measuring head over the web of material. Improved ultrasonic energy transducers are employed wherein a material contacting member is secured to an interface region between oppositely operated first and second regions which intensify and amplify the movement of the interface region and hence the material contacting member by operating in a push-pull mode relative to the interface region. The transducers are calibrated by means of reference paths having known ultrasonic transmission characteristics which reference paths are separate and apart from the web of material which is being measured. The transducers can be selectively contacted with the web of material or not under the influence of vacuum which is applied to a measuring head into which the transducers are installed. A large plurality of ultrasonic energy signals are received by one or more receiving transducers and digitally integrated or summed and averaged to eliminate substantial noise which is present on the received ultrasonic energy signals due to the relative motion of the transducers and the web of material being measured.
Transducers For Transmitting And/Or Receiving Ultrasonic Energy
Paul Williams - Columbus OH Bradley M. Pankonin - Columbus OH
Assignee:
ABB Industrial Systems Inc. - Columbus OH
International Classification:
G01N 2924 G01N 2928
US Classification:
73644
Abstract:
Improved ultrasonic energy transducers each include a material contacting member secured to a piezoelectric element at an interface region between oppositely operated first and second regions of the piezoelectric element. The material contacting member intensifies and amplifies movement of the interface region as the first and second regions of the piezoelectric element operate in a push-pull mode relative to the interface region. The first and second regions of the piezoelectric element can be electrically driven to move the material contacting member for transmission of ultrasonic energy or mechanically driven by the material contacting member for receipt of ultrasonic energy. A variety of piezoelectric elements can be used in the improved transducers including, for example, generally rectangular bars and discs segmented into two or more portions. A variety of material contacting members can also be used including, for example, a cylindrical stud and a more narrow dowel.
Resumes
Mgr Of Financial Plannning & Analysis At Schwan's Consumer Brands
2006 to 2012 Independent ContractorInternational Paper, Manufacturing Technology Loveland, OH 2005 to 2005 Research Scientist (Papermaking Process Solutions)Health Insurance
2001 to 2005 Independent ContractorABB INC., Pulp and Paper Division
1998 to 2001 Senior Staff Engineer / Scientist (Product Development Specialist)ABB INC., Pulp and Paper Division
1993 to 1998 Staff Engineer / ScientistABB INC., Pulp and Paper Division
1991 to 1993 Engineer / ScientistMEAD CORPORATION Chillicothe, OH 1986 to 1991 Research Specialist
Education:
INSTITUTE OF PAPER SCIENCE AND TECHNOLOGY 1981 MS in EngineeringUNIVERSITY OF MINNESOTA 1978 BS in Chemistry
Skills:
Scientific Generalist, Project Management, Measurement Design, Software Design, Chemical Engineering, Process Control, Physics, Field Service, Beta Testing, Manufacturing Trials, Statistical Analysis, Forecasting, Quality Control.
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