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11.发明申请公开(公告)号：US20190323951A1
公开(公告)日：2019-10-24
申请号：US15960705
申请日：2018-04-24
Applicant: General Electric Company
Inventor： Scott Alan Gold , Thomas Graham Spears
Abstract: A system and method for calibrating a melt pool monitoring system of an additive manufacturing machine includes installing a calibration system on the machine and performing a calibration process. Specifically, the calibration system includes a calibration platform removably mountable to a build platform of the additive manufacturing machine and having calibrated electromagnetic energy sources mounted thereon for defining a measurement standard. The electromagnetic energy generated is measured by the melt pool monitoring system and compared to the known measurement standard to determine whether system adjustments would improve process tolerances or uniformity.
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公开(公告)号：US20180292331A1
公开(公告)日：2018-10-11
申请号：US15479454
申请日：2017-04-05
Applicant: General Electric Company
Inventor： Scott Alan Gold , Thomas Graham Spears , David Henry Abbott
Abstract: A system and method for authenticating an additively manufactured component is provided. The method includes locating an identifying region of the component that includes localized density variations that define a component identifier. The method further includes interrogating the identifying region of the component using a scanning device such as an x-ray computed tomography device to obtain the component identifier. The method further includes obtaining a reference identifier from a database, comparing the component identifier to the reference identifier, and determining that the component is authentic if the component identifier matches the reference identifier.
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13.发明申请公开(公告)号：US20180290396A1
公开(公告)日：2018-10-11
申请号：US15479439
申请日：2017-04-05
Applicant: General Electric Company
Inventor： Scott Alan Gold , Thomas Graham Spears , David Henry Abbott
Abstract: A method for additively manufacturing a component is provided. The method includes additively manufacturing an identifying region of the component including localized density variations that define a component identifier of the component. The localized density variations may be formed using two materials having different densities, by manipulating an energy source to underexpose or overexpose a layer of powder, or by laser shock peening the component during the additive manufacturing process. This method generates a three-dimensional unique component identifier that may be invisible to the naked eye and detectable only through interrogation by a scanning device, such as an x-ray computed tomography device. The component identifier may be stored in a database as a reference identifier and may be used for authenticating components.
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公开(公告)号：US10073060B2
公开(公告)日：2018-09-11
申请号：US14946451
申请日：2015-11-19
Applicant: General Electric Company
Inventor： MacKenzie Ryan Redding , Scott Alan Gold , Thomas Graham Spears
CPC classification number: G01N29/02 , B22F3/1055 , B22F2003/1057 , B22F2999/00 , B28B1/001 , B29C64/153 , B33Y10/00 , B33Y30/00 , B33Y50/00 , B33Y50/02 , G01N29/043 , G01N29/0672 , G01N29/221 , G01N29/2418 , G01N2291/0231 , G01N2291/267 , Y02P10/295 , B22F2203/03 , B22F2202/01
Abstract: A method for inspecting an additive manufacturing process in which a directed energy source is used to create a weld pool at an exposed build surface of a mass of powdered material, and selectively fuse the powdered material to form a workpiece. The inspection method includes: using a noncontact method to generate an acoustic wave in the build surface; using a noncontact method to measure displacement of the build surface in response to the acoustic wave; and determining at least one sub-surface material property of the workpiece by analyzing the displacement of the build surface.
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公开(公告)号：US20220266340A1
公开(公告)日：2022-08-25
申请号：US17180994
申请日：2021-02-22
Applicant: General Electric Company
Inventor： David Alan Bartosik , Thomas Graham Spears
Abstract: An additive manufacturing machine may include a beam source, a process chamber, a beam column operably coupled to the process chamber and/or defining a portion of the process chamber, and a gaseous ionization detector disposed about the beam column. The gaseous ionization detector may be configured to detect elementary particles corresponding to an ionizing gas ionized by an energy beam from the beam source. A method of additively manufacturing a three-dimensional object may include determining data from a gaseous ionization detector disposed about a beam column of an additive manufacturing machine, and additively manufacturing a three-dimensional object using the additive manufacturing machine based at least in part on the data from the gaseous ionization detector. A computer-readable medium may include computer-executable instructions, which when executed by a processor associated with an additive manufacturing machine, cause the additive manufacturing machine to perform a method in accordance with the present disclosure.
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Patent Agency Ranking
公开(公告)号：US20210339317A1
公开(公告)日：2021-11-04
申请号：US17374049
申请日：2021-07-13
Applicant: General Electric Company
Inventor： Scott Alan Gold , Thomas Graham Spears
IPC: B22F10/20 , B33Y10/00 , B33Y50/02 , B33Y80/00 , B29C64/40 , B29C64/153 , B29C64/386
Abstract: An additively manufactured component and a method for manufacturing the same are provided. The additively manufactured component includes a cross sectional layer having a surface surrounding the cross sectional layer. The cross sectional layer is formed by moving a focal point of an energy source over a bed of additive material. A surface irregularity is formed on the surface by manipulating the energy level of the energy source. The surface may include a datum feature positioned at a predetermined location relative to the surface irregularity and the surface irregularity may be greater than a surface roughness of the surface but less than one millimeter.
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17.发明授权公开(公告)号：US10914677B2
公开(公告)日：2021-02-09
申请号：US15960705
申请日：2018-04-24
Applicant: General Electric Company
Inventor： Scott Alan Gold , Thomas Graham Spears
Abstract: A system and method for calibrating a melt pool monitoring system of an additive manufacturing machine includes installing a calibration system on the machine and performing a calibration process. Specifically, the calibration system includes a calibration platform removably mountable to a build platform of the additive manufacturing machine and having calibrated electromagnetic energy sources mounted thereon for defining a measurement standard. The electromagnetic energy generated is measured by the melt pool monitoring system and compared to the known measurement standard to determine whether system adjustments would improve process tolerances or uniformity.
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公开(公告)号：US10828837B2
公开(公告)日：2020-11-10
申请号：US16219495
申请日：2018-12-13
Applicant: General Electric Company
Inventor： Thomas Graham Spears
IPC: B29C64/393 , B29C64/153 , G06T7/40 , B33Y10/00 , B33Y50/02 , G06T7/73 , G06K9/46 , G06T7/00 , B23K10/02 , B23K9/04 , B23K9/09
Abstract: A method of controlling an additive manufacturing process in which a directed energy source is used to selectively melt material to form a workpiece, forming a melt pool in the process of melting, the method comprising: using an imaging apparatus to generate an image of the melt pool comprising an array of individual image elements, the image including a measurement of at least one physical property for each of the individual image elements; from the measurements, mapping a melt pool boundary of the melt pool; computing a algebraic connectivity of the melt pool; and controlling at least one aspect of the additive manufacturing process with reference to the algebraic connectivity.
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公开(公告)号：US10706139B2
公开(公告)日：2020-07-07
申请号：US15479352
申请日：2017-04-05
Applicant: General Electric Company
Inventor： Scott Alan Gold , Thomas Graham Spears
IPC: B33Y70/00 , G06F21/44 , G06F16/955 , G06K9/78
Abstract: A system and method for authenticating an additively manufactured component are provided. The method includes locating an identifying region on the component which may be positioned at a predetermined location relative to an identifiable datum feature. The identifying region may be scanned to determine a component identifier of the component. A reference identifier may be obtained from a database and compared to the component identifier to determine whether the component is authentic.
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20.发明申请公开(公告)号：US20200147725A1
公开(公告)日：2020-05-14
申请号：US16662621
申请日：2019-10-24
Applicant: General Electric Company
Inventor： Scott Alan Gold , Thomas Graham Spears , Ajay Kumar Anand
Abstract: A system and method of monitoring a powder-bed additive manufacturing process is provided where a layer of additive powder is fused using an energy source and electromagnetic emission signals are measured by a melt pool monitoring system to monitor the print process. The measured emission signals are analyzed to identify outlier emissions and clusters of outliers are identified by assessing the spatial proximity of the outlier emissions, e.g., using clustering algorithms, spatial control charts, etc. An alert may be provided or a process adjustment may be made when a cluster is identified or when a magnitude of a cluster exceeds a predetermined cluster threshold.
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