Crack detection system
First Claim
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1. A system for detecting cracks in a part, the system comprising:
- a means for conveying the part having a surface for orienting the part;
an illumination source configured to project a sheet of light wherein the sheet of light intersects the part;
an optical system configured to focus reflected light from the sheet of light intersecting the part into an image;
a photosensitive array positioned to receive the image and generate an output corresponding to the image; and
a processor configured to detect cracks in the part by analyzing the output of the photosensitive array.
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Abstract
A system is provided to determine the presence of cracks in parts. The presence of cracks is determined through the use of an imaging device and illumination source. The part is moved along a track where it is sensed by a position sensor to initiate the inspection. The illumination source projects a sheet of light onto the part to be inspected. The line formed by the intersection of the sheet of light and the part is focused onto the imaging device. The imaging device creates a digital image which is analyzed to determine if cracks are present on the part.
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Citations
30 Claims
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1. A system for detecting cracks in a part, the system comprising:
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a means for conveying the part having a surface for orienting the part;
an illumination source configured to project a sheet of light wherein the sheet of light intersects the part;
an optical system configured to focus reflected light from the sheet of light intersecting the part into an image;
a photosensitive array positioned to receive the image and generate an output corresponding to the image; and
a processor configured to detect cracks in the part by analyzing the output of the photosensitive array. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for detecting cracks in a part, the system comprising:
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a means for conveying the part having a surface for orienting the part;
a plurality of illumination sources configured to project a sheet of light that intersect the part across the part'"'"'s width thereby forming a diffuse reflection;
a plurality of photosensitive arrays positioned to receive the dissue reflection in the form of an image and generate an output corresponding to the image, wherein each illumination source of the plurality of illumination sources is associated with a photosensitive array from the plurality of photosensitive arrays to form a source-array pair, the source array pairs being arranged around the part to make a continuous measurement around a perimeter of the part; and
a processor configured to detect cracks in the part by analyzing the output of the photosensitive array. - View Dependent Claims (23, 24, 25, 26)
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27. A method for detecting cracks on a part comprising:
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projecting a sheet of light onto a part;
imaging the reflected light from the part onto a light sensing array;
digitizing the image from the sensing array;
identifying a plurality of picture elements of the digital image corresponding to the sheet of light intersecting the part; and
determining the presence of cracks on the part by analyzing the spatial relationship of the plurality of picture elements. - View Dependent Claims (28, 29, 30)
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Specification