SYSTEM AND METHOD FOR INSPECTING PARTS USING FREQUENCY RESPONSE FUNCTION
First Claim
1. A system for the non-destructive testing of one or more parts manufactured using an additive manufacturing process, the system comprising:
- an input mechanism configured to excite with an excitation force an additive manufacturing build platform on which the one or more parts are located to induce a dynamic response in the one or more parts;
an output mechanism configured to sense the induced dynamic response in the one or more parts; and
a processing element configured to determine a relationship between the excitation force and the dynamic response and to examine the determined relationship to identify an indication of a defect in the one or more parts, and to communicate an alert if the indication of the defect is identified.
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Accused Products
Abstract
A system and method for the non-destructive testing of additively manufactured parts. An input mechanism excites with an excitation force (e.g., a vibration) an additive manufacturing build platform on which the part is located to induce a dynamic response in the part. An output mechanism (e.g., a non-contact transducer) senses the induced dynamic response in the part. A processor determines and examines the relationship between the response and excitation to identify an indication of a defect in the part, and communicates an alert if the indication is identified. The processor may compare the phase, magnitude, coherence, or time delay of the relationship to a reference relationship and/or may compare the modal frequency or the modal damping to a reference to identify a deviation greater than a pre-established threshold.
44 Citations
25 Claims
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1. A system for the non-destructive testing of one or more parts manufactured using an additive manufacturing process, the system comprising:
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an input mechanism configured to excite with an excitation force an additive manufacturing build platform on which the one or more parts are located to induce a dynamic response in the one or more parts; an output mechanism configured to sense the induced dynamic response in the one or more parts; and a processing element configured to determine a relationship between the excitation force and the dynamic response and to examine the determined relationship to identify an indication of a defect in the one or more parts, and to communicate an alert if the indication of the defect is identified. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for the non-destructive testing of one or more parts manufactured using an additive manufacturing process, the system comprising:
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an input mechanism configured to excite with vibrational excitation force an additive manufacturing build platform on which the one or more parts are located to induce a dynamic response in each of the parts, wherein the input mechanism directly excites the additive manufacturing build platform so as to indirectly excite the one or more parts located on the additive manufacturing build platform; a non-contact transducer configured to sense the induced dynamic response in the one or more parts; and an electronic processing element configured to determine a relationship between the vibrational excitation and the dynamic response, and to examine the relationship to identify an indication of a defect in the one or more parts, and to electronically communicate an alert if the indication of the defect is identified.
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14. A method for the non-destructive testing of one or more parts manufactured using an additive manufacturing process, the method comprising:
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exciting with an input mechanism an additive manufacturing build platform on which the one or more parts are located by using an excitation force to induce a dynamic response in the one or more parts; sensing with an output mechanism the dynamic response in the one or more parts; and determining with an electronic processing element a relationship between the excitation force and the dynamic response, and examining with the electronic processing element the determined relationship to identify an indication of a defect in the one or more parts, and electronically communicating an alert if the indication of the defect is identified. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification