METHOD FOR THE NON-DESTRUCTIVE TESTING OF A TEST OBJECT BY MEANS OF ULTRASOUND AND DEVICE THEREFOR
First Claim
1. A method for the non-destructive testing of a test object using an ultrasound, comprising the steps of:
- generating a pulsed ultrasonic field in the test object with an array of individually drivable ultrasonic transmitting transducers acoustically coupled to the test object, the ultrasonic transmitting transducers each being driven with a specific analog transient excitation signal, wherein each analog transient excitation signal is generated based on an ultrasonic transmitting transducer-specific stored digital transient excitation function,receiving resulting echo signals from the test object with an array of individually drivable ultrasonic receiving transducers, wherein each ultrasonic receiving transducer provides an analog time-resolved echo signal,providing transducer-specific digitization of the time-resolved analog echo signals,temporarily storing the time-resolved, transducer-specific, digitized echo signals in the form of an echo signal set,applying a plurality of different reception processing rules to the echo signal set, wherein a reception processing rule has at least the following reception processing parameters;
the number and identity of the ultrasonic receiving transducers whose echo signals are being taken into account in the reception processing rule,individual phase shifts applied to the echo signals taken into account in the reception processing rule, and, if applicable,time frames in which the echo signals lie that are to be taken into account in the reception processing rule.
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Accused Products
Abstract
A method for the nondestructive testing of a test object by ultrasound is provided, the method including generating a pulsed ultrasonic field in the test object by means of an array of individually drivable ultrasonic transmitting transducers acoustically coupled to the test object. The ultrasonic transmitting transducers are each driven with a specific analog transient excitation signal, wherein each analog transient excitation signal is generated based on an ultrasonic transmitting transducer-specific stored digital transient excitation function. The method further includes receiving resulting echo signals from the test object by means of an array of individually drivable ultrasonic receiving transducers, with each ultrasonic receiving transducer providing an analog time-resolved echo signal, temporarily storing the time-resolved, transducer-specific, digitized echo signals in the form of an echo signal set, and applying a plurality of different reception processing rules to the echo signal set.
48 Citations
25 Claims
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1. A method for the non-destructive testing of a test object using an ultrasound, comprising the steps of:
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generating a pulsed ultrasonic field in the test object with an array of individually drivable ultrasonic transmitting transducers acoustically coupled to the test object, the ultrasonic transmitting transducers each being driven with a specific analog transient excitation signal, wherein each analog transient excitation signal is generated based on an ultrasonic transmitting transducer-specific stored digital transient excitation function, receiving resulting echo signals from the test object with an array of individually drivable ultrasonic receiving transducers, wherein each ultrasonic receiving transducer provides an analog time-resolved echo signal, providing transducer-specific digitization of the time-resolved analog echo signals, temporarily storing the time-resolved, transducer-specific, digitized echo signals in the form of an echo signal set, applying a plurality of different reception processing rules to the echo signal set, wherein a reception processing rule has at least the following reception processing parameters; the number and identity of the ultrasonic receiving transducers whose echo signals are being taken into account in the reception processing rule, individual phase shifts applied to the echo signals taken into account in the reception processing rule, and, if applicable, time frames in which the echo signals lie that are to be taken into account in the reception processing rule. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 24, 25)
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13. A device for the non-destructive testing of a test object with an ultrasound, comprising:
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an ultrasonic transmitting unit configured to generate a pulsed ultrasonic field in the test object with an array of individually drivable ultrasonic transmitting transducers acoustically coupled to the test object, by the ultrasonic transmitting transducers each being driven with a specific analog transient excitation signal, wherein each analog transient excitation signal is generated based on an ultrasonic transmitting transducer-specific digital transient excitation function stored in the ultrasonic transmitting unit, an ultrasonic receiving unit configured to; receive resulting echo signals from the test object with an array of individually drivable ultrasonic receiving transducers, each ultrasonic receiving transducer providing an analog time-resolved echo signal, digitize in a transducer-specific way and temporarily store, in the form of an echo signal set, the analog echo signals that were received in a time-resolved manner, and apply a plurality of different reception processing rules to the echo signal set, a reception processing rule having at least the following reception processing parameters; the number and identity of the ultrasonic receiving transducers whose echo signals are being taken into account in the reception processing rule, individual phase shifts applied to the echo signals taken into account in the reception processing rule, and, if applicable, time frames in which the echo signals lie that are to be taken into account in the reception processing rule. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. The device according to claim 23, wherein the ultrasonic field, for whose generation the ultrasonic transmitting device is configured, has a disappearing sound amplitude in a plane extending through the insonification point and oriented transverse to the longitudinal pipe axis.
Specification