Apparatus for infrared imaging inspections
First Claim
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1. A method of nondestructively identifying regions of high density in a substrate of a bonded matrix of carbon fibers comprising the procedural combination of steps of:
- connecting conductor terminals at opposite extremities of an area of a substrate of a bonded matrix of carbon fibers to be imaged;
connecting the conductor terminals to an electrical power supply to apply a current through the terminals and across the area of the substrate, thereby to heat and to create contrasting regions of temperature gradients which clearly distinguish regions of high and low density;
identifying and recording the regions of high and low density by photographing or scanning the area with infrared ray emission imaging equipment.
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Abstract
A method of nondestructively identifying regions "R" of high density in a substrate (10) of a bonded matrix of carbon fibers by resistively heating the substrate and taking an infrared image of the heated substrate. Terminals 12, 14, 16 and 18 are connected to a power supply 26 by wires 22 and cable 24 of which they are a part, to effect the heating.
18 Citations
9 Claims
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1. A method of nondestructively identifying regions of high density in a substrate of a bonded matrix of carbon fibers comprising the procedural combination of steps of:
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connecting conductor terminals at opposite extremities of an area of a substrate of a bonded matrix of carbon fibers to be imaged; connecting the conductor terminals to an electrical power supply to apply a current through the terminals and across the area of the substrate, thereby to heat and to create contrasting regions of temperature gradients which clearly distinguish regions of high and low density; identifying and recording the regions of high and low density by photographing or scanning the area with infrared ray emission imaging equipment. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. The method of claim 8 in which the recording is video recording.
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9. A method of nondestructively identifying regions of irregular structure in a substrate of a bonded matrix of carbon by performing the steps of resistively heating the substrate and taking an infrared image of the heated substrate.
Specification