Patents by Inventor Uwe LIESKE
Uwe LIESKE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11359917Abstract: A method for non-destructive testing of walls of components, at least one ultrasonic transducer (1) which is fixed to a surface of the wall is used to emit horizontally polarized transverse waves (3) in a lateral propagation direction and compression waves or vertically polarized transverse waves (6) in a radial propagation direction. The at least one ultrasonic transducer (1) and/or at least one further ultrasonic transducer arranged at a known distance from the at least one ultrasonic transducer (1) on the respective wall of the component (2) is/are used to detect horizontally polarized transverse waves (4) reflected by defects and compression waves or vertically polarized transverse waves (7) after or while running the non-destructive testing of the wall in order to determine the respective wall thickness.Type: GrantFiled: May 13, 2020Date of Patent: June 14, 2022Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bianca Weihnacht, Tobias Gaul, Uwe Lieske, Lars Schubert
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Patent number: 11300545Abstract: In the system, two ultrasonic transducers, which form a pair and each have a piezoelectric ceramic plate-shaped element with a rectangular geometry, can be fastened to a surface of a component. The two ultrasonic transducers are arranged at a distance from one another such that there is no direct mechanical contact and they are arranged beside one another with a parallel orientation of their central longitudinal axes. The two elements have a different polarization along their width and are connected with the same polarity to an electrical voltage source. The two plate-shaped elements can also have an identical polarization along their width and can be connected in this case with opposite polarity to an electrical voltage source. At least one ultrasonic transducer and/or at least one further ultrasonic transducer is/are designed to detect ultrasonic waves reflected by defects and/or shear waves simultaneously emitted by the two ultrasonic transducers.Type: GrantFiled: May 13, 2020Date of Patent: April 12, 2022Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bianca Weihnacht, Tobias Gaul, Uwe Lieske, Lars Schubert, Bernd Koehler
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Publication number: 20200363374Abstract: In the system, two ultrasonic transducers, which form a pair and each have a piezoelectric ceramic plate-shaped element with a rectangular geometry, can be fastened to a surface of a component. The two ultrasonic transducers are arranged at a distance from one another such that there is no direct mechanical contact and they are arranged beside one another with a parallel orientation of their central longitudinal axes. The two elements have a different polarization along their width and are connected with the same polarity to an electrical voltage source. The two plate-shaped elements can also have an identical polarization along their width and can be connected in this case with opposite polarity to an electrical voltage source. At least one ultrasonic transducer and/or at least one further ultrasonic transducer is/are designed to detect ultrasonic waves reflected by defects and/or shear waves simultaneously emitted by the two ultrasonic transducers.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bianca WEIHNACHT, Tobias GAUL, Uwe LIESKE, Lars SCHUBERT, Bernd KOEHLER
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Publication number: 20200363196Abstract: A method for non-destructive testing of walls of components, at least one ultrasonic transducer (1) which is fixed to a surface of the wall is used to emit horizontally polarized transverse waves (3) in a lateral propagation direction and compression waves or vertically polarized transverse waves (6) in a radial propagation direction. The at least one ultrasonic transducer (1) and/or at least one further ultrasonic transducer arranged at a known distance from the at least one ultrasonic transducer (1) on the respective wall of the component (2) is/are used to detect horizontally polarized transverse waves (4) reflected by defects and compression waves or vertically polarized transverse waves (7) after or while running the non-destructive testing of the wall in order to determine the respective wall thickness.Type: ApplicationFiled: May 13, 2020Publication date: November 19, 2020Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bianca WEIHNACHT, Tobias GAUL, Uwe LIESKE, Lars SCHUBERT
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Patent number: 10765406Abstract: Embodiments of the present invention provide a device for obtaining information about one or more living beings. The device comprises an actuator, a sensor and an evaluator. The actuator is configured to output an excitation signal for exciting the living being(s). The sensor is configured to detect a signal generated by the living being(s) in reaction to the excitation signal, to obtain a detected signal. The evaluator is configured to evaluate the detected signal so as to obtain the information about the living being(s).Type: GrantFiled: March 25, 2016Date of Patent: September 8, 2020Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Olaf Roeder, Lars Schubert, Constanze Tschoepe, Bernd Frankenstein, Uwe Lieske
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Patent number: 10379085Abstract: The invention relates to an assembly for nondestructive material testing with which shear waves are emitted and detected in elastic surfaces of components or workpieces, in which piezoelectric transducer elements are arranged above one another in multiple planes and the piezoelectric transducer elements arranged in adjacent planes can each be operated oppositely to one another. The piezoelectric transducer elements can be piezoelectric fibers and/or piezoelectric plate-like elements that are connected to or embedded in an elastically deformable material.Type: GrantFiled: May 26, 2015Date of Patent: August 13, 2019Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bernd Koehler, Frank Schubert, Uwe Lieske
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Publication number: 20170205374Abstract: The invention relates to an assembly for nondestructive material testing with which shear waves are emitted and detected in elastic surfaces of components or workpieces, in which piezoelectric transducer elements are arranged above one another in multiple planes and the piezoelectric transducer elements arranged in adjacent planes can each be operated oppositely to one another. The piezoelectric transducer elements can be piezoelectric fibers and/or piezoelectric plate-like elements that are connected to or embedded in an elastically deformable material.Type: ApplicationFiled: May 26, 2015Publication date: July 20, 2017Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Bernd KOEHLER, Frank SCHUBERT, Uwe LIESKE
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Publication number: 20160206286Abstract: Embodiments of the present invention provide a device for obtaining information about one or more living beings. The device comprises an actuator, a sensor and an evaluator. The actuator is configured to output an excitation signal for exciting the living being(s). The sensor is configured to detect a signal generated by the living being(s) in reaction to the excitation signal, to obtain a detected signal. The evaluator is configured to evaluate the detected signal so as to obtain the information about the living being(s).Type: ApplicationFiled: March 25, 2016Publication date: July 21, 2016Inventors: Olaf ROEDER, Lars SCHUBERT, Constanze TSCHOEPE, Bernd FRANKENSTEIN, Uwe LIESKE