Single channel scanning acoustic microscope with multiple focused ultrasonic transducers
First Claim
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1. A scanning acoustic microscope for scanning a part under inspection, the scanning acoustic microscope comprising:
- a single channel electronic circuit configuration comprising a pulse generator, an amplifier, and a digital format converter; and
a plurality of transducers, wherein each transducer comprises an acoustic rod body, at least one piezoelectric crystal, and at least one lens, wherein each transducer is configured to generate an ultrasonic wave,wherein said ultrasonic wave generated by each transducer has a different time delay relative to ultrasonic waves generated by other transducers prior to reaching the part under inspection,wherein each transducer is connected to said single channel electronic circuit configuration, andwherein each transducer is continuously electrically coupled to the digital format converter.
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Abstract
A single channel scanning acoustic microscope that increases the throughput of the acoustic imaging system by connecting a multi-transducer assembly in parallel to a single channel electronic circuit. The single channel scanning acoustic microscope includes multiple transducers configured to generate a time delay for individual ultrasonic waves generated by each transducer, wherein a pulse generator simultaneously sends a pulse signal to the multi-transducer assembly.
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Citations
32 Claims
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1. A scanning acoustic microscope for scanning a part under inspection, the scanning acoustic microscope comprising:
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a single channel electronic circuit configuration comprising a pulse generator, an amplifier, and a digital format converter; and a plurality of transducers, wherein each transducer comprises an acoustic rod body, at least one piezoelectric crystal, and at least one lens, wherein each transducer is configured to generate an ultrasonic wave, wherein said ultrasonic wave generated by each transducer has a different time delay relative to ultrasonic waves generated by other transducers prior to reaching the part under inspection, wherein each transducer is connected to said single channel electronic circuit configuration, and wherein each transducer is continuously electrically coupled to the digital format converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 18)
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15. A scanning acoustic microscope, comprising:
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a plurality of transducers, wherein two or more of the transducers each emits a focused ultrasonic beam towards a part under inspection, wherein each of the plurality of transducers comprises an acoustic rod, at least one lens at a second end of each transducer, and a piezoelectric crystal directly attached to the acoustic rod, wherein a first end of each transducer is connected to a single channel electronic circuit, and wherein a reflection of said ultrasonic beam that travels into the part under inspection from each transducer is received by the same transducer with a time delay, and a signal based on the received reflection of said ultrasonic beam is transmitted to the single channel electronic circuit. - View Dependent Claims (16, 17, 19, 20, 21, 22, 23)
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24. A scanning acoustic microscope, comprising:
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a plurality of transducers including at least one transmitting transducer and at least one receiving transducer, the at least one transmitting transducer emitting a focused ultrasonic beam towards a part under inspection, wherein each of the plurality of transducers comprises an acoustic rod, at least one lens at a second end of each transducer, and a piezoelectric crystal directly attached to the acoustic rod, wherein a first end of each transducer is connected to a single channel electronic circuit, wherein the focused ultrasonic beam is emitted from the transmitting transducer, travels into the part under inspection, and is received by the receiving transducer with a time delay, and wherein a signal based on the received transmission of said ultrasonic beam through the part under inspection is transmitted to the single channel electronic circuit. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification