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US 2016/0103013 A1Published application
Determination of ultrasonic inspectability
AssigneeROLLS-ROYCE plc
InventorsStephen Samuel WISEALL, Anthony Bernard PHIPPS, David Cameron WRIGHT, Sree Vamsi TAMMINENI, James William Cheang MEAS
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Abstract
The ultrasonic inspectability of a supplied part out of which a final component is to be machined is determined by following a set of inspection rules for ultrasonic inspection of the supplied part. The rules determine which parts of the polygon cannot be inspected by a scan at a given ultrasound beam angle (typical beam angles are 0°, +20° and −20° relative to the perpendicular direction to the edge) along a given edge of the polygon.
Claims13
A method of determining the ultrasonic inspectability of a supplied part out of which a final component is to be machined, the method including the steps of:
- providing a set of inspection rules for ultrasonic inspection of the supplied part;
- providing an input geometry for the supplied part in the form of at least one 2D polygon, the supplied part being ultrasonically inspectable by scanning an ultrasonic probe at one or more different ultrasound beam angles along faces of the supplied part corresponding to polygon edges of the input geometry, whereby a complete ultrasonic inspection of the supplied part comprises a number of scans equal to the sum, over all the edges, of all the beam angles used for a given edge;
- providing a target geometry which is at least one further 2D form defining the shape and position of the machined final component within the input geometry;
- for each edge of the input geometry, determining a respective allowable region of the input geometry that defines those parts of the input geometry which can be ultrasonically inspected from that edge without infringing the inspection rules;
- for each combination of a given ultrasound beam angle and a given edge of the input geometry, determining a respective limitation shape which is bounded at one side by the given edge and extends from that edge in the direction of the beam to a boundary at a penetration depth of the ultrasound in the input geometry;
- for each edge of the input geometry, combining the one or more limitation shapes for that edge with the allowable region for that edge to determine one or more inspectable regions of the input geometry associated with that edge, each inspectable region thereby corresponding to a respective one of the scans of the complete ultrasonic inspection;
- and
- overlaying the inspectable regions in their relative positions on the target geometry, whereby the supplied part is determined to be ultrasonically inspectable when all parts of the target geometry are overlayed by at least a predetermined minimum number of the inspectable regions.
5 more elements
A manufacturing process including the steps of:
- designing a supplied part;
- performing a method to determine that the supplied part is ultrasonically inspectable, the method including the steps of:
- providing a set of inspection rules for ultrasonic inspection of the supplied part;
- providing an input geometry for the supplied part in the form of at least one 2D polygon, the supplied part being ultrasonically inspectable by scanning an ultrasonic probe at one or more different ultrasound beam angles along faces of the supplied part corresponding to polygon edges of the input geometry, whereby a complete ultrasonic inspection of the supplied part comprises a number of scans equal to the sum, over all the edges, of all the beam angles used for a given edge;
- providing a target geometry which is at least one further 2D form defining the shape and position of the machined final component within the input geometry;
- for each edge of the input geometry, determining a respective allowable region of the input geometry that defines those parts of the input geometry which can be ultrasonically inspected from that edge without infringing the inspection rules;
- for each combination of a given ultrasound beam angle and a given edge of the input geometry, determining a respective limitation shape which is bounded at one side by the given edge and extends from that edge in the direction of the beam to a boundary at a penetration depth of the ultrasound in the input geometry;
- for each edge of the input geometry, combining the one or more limitation shapes for that edge with the allowable region for that edge to determine one or more inspectable regions of the input geometry associated with that edge, each inspectable region thereby corresponding to a respective one of the scans of the complete ultrasonic inspection;
- and
- overlaying the inspectable regions in their relative positions on the target geometry, whereby the supplied part is determined to be ultrasonically inspectable when all parts of the target geometry are overlayed by at least a predetermined minimum number of the inspectable regions to determine that the supplied part is ultrasonically inspectable;
- the manufacturing process further comprising:
- producing the supplied part;
- and
- ultrasonically inspecting the supplied part.
11 more elements
Dependencies are inferred from the claim text.