Thermal inspection system and method
First Claim
1. A thermal inspection method for a component comprising at least one complex internal passage arrangement defining at least one opening, the thermal inspection method comprising:
- flowing a fluid through the at least one complex internal passage arrangement, wherein the fluid has an initial temperature that differs from an initial temperature of the component;
measuring a thermal response of the component to the fluid flow;
analyzing the thermal response to determine a plurality of heat transfer coefficients {hlmn} corresponding to a respective plurality of locations {l,m,n} within the complex internal passage arrangement; and
using the heat transfer coefficients {lmn} to determine a flow rate through respective ones of the at least one opening by comparing the heat transfer coefficients {lmn} for the component with corresponding ones of a plurality of heat transfer coefficients {hreflmn} for a reference part comprising at least one complex, internal passage arrangement defining at least one opening.
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Accused Products
Abstract
A thermal inspection method is provided for a component comprising at least one complex internal passage arrangement defining at least one opening. The thermal inspection method includes flowing a fluid through the at least one complex internal passage arrangement. The fluid has an initial temperature that differs from an initial temperature of the component. The thermal inspection method further includes measuring a thermal response of the component to the fluid flow and analyzing the thermal response to determine a number of heat transfer coefficients {hlmn} corresponding to respective locations {l,m,n} within the complex internal passage arrangement. The thermal inspection method further includes using the heat transfer coefficients {hlmn} to determine at least one of (a) a flow rate through respective ones of the at least one opening, and (b) a cross-sectional area for respective ones of the at least one opening.
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Citations
18 Claims
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1. A thermal inspection method for a component comprising at least one complex internal passage arrangement defining at least one opening, the thermal inspection method comprising:
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flowing a fluid through the at least one complex internal passage arrangement, wherein the fluid has an initial temperature that differs from an initial temperature of the component; measuring a thermal response of the component to the fluid flow; analyzing the thermal response to determine a plurality of heat transfer coefficients {hlmn} corresponding to a respective plurality of locations {l,m,n} within the complex internal passage arrangement; and using the heat transfer coefficients {lmn} to determine a flow rate through respective ones of the at least one opening by comparing the heat transfer coefficients {lmn} for the component with corresponding ones of a plurality of heat transfer coefficients {hreflmn} for a reference part comprising at least one complex, internal passage arrangement defining at least one opening. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A thermal inspection method for a component comprising at least one complex internal passage arrangement defining at least one opening, the thermal inspection method comprising:
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flowing a fluid through the at least one complex internal passage arrangement, wherein the fluid has an initial temperature that differs from an initial temperature of the component; measuring a thermal response of the component to the fluid flow; analyzing the thermal response to determine a plurality of heat transfer coefficients {hlmn} corresponding to a respective plurality of locations {l,m,n} within the complex internal passage arrangement; and using the heat transfer coefficients {hlmn} to determine a cross-sectional area for respective ones of the at least one opening by comparing the heat transfer coefficients {hlmn} for the component with corresponding ones of a plurality of heat transfer coefficients {hreflmn} for a reference part. - View Dependent Claims (8)
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9. A thermal inspection method for a component comprising at least one complex internal passage arrangement defining at least one opening, the thermal inspection method comprising:
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flowing a fluid through the at least one complex internal passage arrangement, wherein the fluid has an initial temperature that differs from an initial temperature of the component; measuring a thermal response of the component to the fluid flow; analyzing the thermal response to determine a plurality of heat transfer coefficients {hlmn} corresponding to a respective plurality of locations {l,m,n} within the complex internal passage arrangement; using the heat transfer coefficients {hlmn} to determine at least one of (a) a flow rate through respective ones of the at least one opening, and (b) a cross-sectional area for respective ones of the at least one opening; repeating the flowing, measuring and analyzing steps for a plurality of similar components having at least one complex internal passage arrangement, with at least one opening, to generate a plurality of heat transfer coefficients {h′
lmn} for the similar components; andcalculating a statistical measure {Slmn} of the heat transfer coefficients {h′
lmn} for the similar components, wherein a plurality of data used to calculate the statistical measure comprises at least one of a flow rate and a cross-sectional area for respective ones of the similar components, wherein the using step comprises using the heat transfer coefficients to determine the flow rate through respective ones of the passages by comparing the heat transfer coefficients {hlmn} for the component with the statistical measure {Sl,m,n} of the heat transfer coefficients {h′
lmn} for the similar components.
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10. A thermal inspection method for a component comprising at least one complex internal passage arrangement defining at least one opening, the thermal inspection method comprising:
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flowing a fluid through the at least one complex internal passage arrangement, wherein the fluid has an initial temperature that differs from an initial temperature of the component; measuring a thermal response of the component to the fluid flow; analyzing the thermal response to determine a plurality of heat transfer coefficients {hlmn} corresponding to a respective plurality of locations {l,m,n} within the complex internal passage arrangement; using the heat transfer coefficients {hlmn} to determine at least one of (a) a flow rate through respective ones of the at least one opening, and (b) a cross-sectional area for respective ones of the at least one opening; repeating the flowing, measuring and analyzing steps for a plurality of similar components having at least one complex internal passage arrangement, with at least one opening, to generate a plurality of heat transfer coefficients {h′
lmn} for the similar components; andcalculating a statistical measure {Slmn} of the heat transfer coefficients {h′
lmn} for the similar components,wherein the using step comprises using the heat transfer coefficients to determine the cross-sectional area for respective ones of the passages by comparing the heat transfer coefficients for the component with the statistical measure {Slmn} of the heat transfer coefficients {h′
lmn} for the similar components.
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11. A thermal inspection method for a component comprising at least one complex internal passage arrangement defining at least one opening, the thermal inspection method comprising:
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flowing a fluid through the at least one complex internal passage arrangement, wherein the fluid has an initial temperature that differs from an initial temperature of the component; measuring a thermal response of the component to the fluid flow; analyzing the thermal response to determine a plurality of heat transfer coefficients {hlmn} corresponding to a respective plurality of locations {l,m,n} within the complex internal passage arrangement; and using the heat transfer coefficients {hlmn} to determine a flow rate through respective ones of the at least one opening by solving an equation h=(k/D)CRemPrn, where k is a thermal conductivity of the fluid, D is a hydraulic diameter of a connecting orifice, Re is the Reynolds number, Pr is the Prandtl number, and C, m and n are correlation constants.
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12. A thermal inspection method for a component comprising at least one complex internal passage arrangement defining at least one opening, the thermal inspection method comprising:
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flowing a fluid through the at least one complex internal passage arrangement, wherein the fluid has an initial temperature that differs from an initial temperature of the component; measuring a thermal response of the component to the fluid flow; analyzing the thermal response to determine a plurality of heat transfer coefficients {hlmn} corresponding to a respective plurality of locations {l,m,n} within the complex internal passage arrangement; and using the heat transfer coefficients to determine a cross-sectional area for respective ones of the at least one opening by solving an equation h=(k/D)CRemPrn, where k is a thermal conductivity of the fluid, D is a hydraulic diameter of a connecting orifice, Re is the Reynolds number, Pr is the Prandtl number, and C, m and n are correlation constants.
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13. A thermal inspection system for a component comprising at least one complex internal passage arrangement defining at least one opening, the thermal inspection system comprising:
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a flow chamber configured to supply a fluid flow to the at least one complex internal passage arrangement; a thermal monitoring device configured to detect a plurality of surface temperatures, either directly or indirectly, of the component at a plurality of times corresponding to a thermal response of the component to the fluid flow; and a processor configured to; analyze the thermal response to determine a plurality of heat transfer coefficients {hlmn} corresponding to a respective plurality of locations {l,m,n} within the complex internal passage arrangement, calculate a statistical measure {Slmn} of a plurality of heat transfer coefficients {h′
lmn} for a plurality of similar components, anduse the heat transfer coefficients {hlmn} to determine at least one of (a) a flow rate through respective ones of the at least one opening, and (b) a cross-sectional area for respective ones of the at least one opening by comparing the heat transfer coefficients {hlmn} for the component with the statistical measure {Slmn} of the heat transfer coefficients {h′
lmn} for the similar components. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification