Ultrasonic test chamber for tray production system and the like
First Claim
1. A method for ultrasonic scanning of an object supported by an object holder in a scanning station, the scanning station comprising an upper chamber and housing an ultrasonic transducer with an ultrasound emitting surface, the method comprising:
- moving the object beneath the upper chamber;
insonifying the object with ultrasound from the ultrasonic transducer;
supplying a coupling fluid to the upper chamber so that coupling fluid flows through one or more holes in the bottom of the upper chamber onto the object, thereby filling the space between the ultrasound emitting surface of the ultrasonic transducer and the object; and
sensing ultrasound reflected from or transmitted through the object, wherein the static pressure of the coupling fluid exerts a downward force on the object tending to hold the object in the object holder.
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Accused Products
Abstract
A method and apparatus for ultrasonic inspection of one or more objects in an object holder. In a first embodiment of the method, the objects are immersed in a tank containing coupling fluid and a flow of fluid is generated in the tank beneath the object holder, thereby producing a suction pressure that tends to hold the objects in the holder. Each object is insonified with ultrasound from an ultrasonic transducer and the ultrasound reflected from or transmitted through the object is sensed. In a further embodiment, the object to be inspected is moved between the upper and lower chambers of a scanning station, over a surface in the lower chamber. A coupling fluid is supplied to the upper chamber so that coupling fluid flows through one or more holes in the bottom of the upper chamber and fills the space between the ultrasound emitting surface of the ultrasonic transducer and the object to be scanned, thereby providing coupling for the ultrasound and tending the hold the objects in the object holder.
96 Citations
42 Claims
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1. A method for ultrasonic scanning of an object supported by an object holder in a scanning station, the scanning station comprising an upper chamber and housing an ultrasonic transducer with an ultrasound emitting surface, the method comprising:
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moving the object beneath the upper chamber;
insonifying the object with ultrasound from the ultrasonic transducer;
supplying a coupling fluid to the upper chamber so that coupling fluid flows through one or more holes in the bottom of the upper chamber onto the object, thereby filling the space between the ultrasound emitting surface of the ultrasonic transducer and the object; and
sensing ultrasound reflected from or transmitted through the object, wherein the static pressure of the coupling fluid exerts a downward force on the object tending to hold the object in the object holder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for removing bubbles from the surface of an object in an object holder prior to ultrasonic scanning, the method comprising:
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supplying a flow of fluid to an upper de-bubbling chamber so that fluid flows through one or more holes in the bottom of the upper de-bubbling chamber; and
moving the object beneath the upper de-bubbling chamber through the flow of fluid from the one or more holes in the bottom of the upper de-bubbling chamber, wherein the static pressure of the fluid exerts a downward force on the object tending to hold the object in the object holder.
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17. A method for removing bubbles from the surface of an object in an object holder prior to ultrasonic scanning, the method comprising
moving the object between the upper surface of a lower de-bubbling chamber and a cover containing at least one aperture large enough to allow fluid and bubbles to pass but small enough to prevent passage of the object; - and
supplying a flow of fluid to a lower de-bubbling chamber so that fluid flows upwards past the object through the at least one aperture in the cover.
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18. A method for ultrasonic inspection of an object in an object holder holding one or more objects, the method comprising:
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immersing the object and the object holder in a tank containing coupling fluid;
generating a flow of fluid in the tank beneath the object holder, whereby a suction pressure is produced tending to hold the one or more objects in the object holder;
insonifying the object with ultrasound from an ultrasonic transducer; and
sensing ultrasound reflected from or transmitted through the object. - View Dependent Claims (19, 20, 21, 22)
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23. An ultrasonic test chamber for use in inspecting an object in an object holder, the ultrasonic test chamber comprising at least one of a de-bubbling station and a scanning station,
the de-bubbling station comprising: -
an upper de-bubbling chamber having at least one opening in its bottom surface, the at least one opening being sized so that the object cannot pass through; and
a lower de-bubbling chamber located below the upper de-bubbling chamber and spaced therefrom to allow the object to pass between the upper de-bubbling chamber and the lower de-bubbling chamber;
wherein the lower de-bubbling chamber is operable to supply a flow of fluid directed towards the object and the upper chamber is operable to receive at least some of the flow of fluid through the at least one opening; and
the scanning station comprising;
a holder support structure for supporting the object holder;
an upper scanning station chamber positioned above the holder support structure; and
a first ultrasonic transducer located within the upper scanning station chamber;
wherein the upper scanning station chamber is operable to receive and dispense coupling fluid at a rate sufficient to provide fluid coupling between the ultrasonic transducer and the object and to provide a static fluid pressure acting on the object and tending to retain the object in the object holder. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification