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    3D LASER ABLATION TOMOGRAPHY
    1.
    发明申请
    3D LASER ABLATION TOMOGRAPHY 有权
    3D激光消融TOMOGRAPHY

    公开(公告)号：US20170059454A1

    公开(公告)日：2017-03-02

    申请号：US15223382

    申请日：2016-07-29

    Applicant: The Penn State Research Foundation

    Inventor： Benjamin Hall ,  Jonathan Lynch ,  Edward W. Reutzel ,  Galen Lynch

    IPC: G01N1/06 ,  G01N21/27

    CPC classification number: G01N1/06 ,  G01N21/27 ,  G01N2001/045 ,  G01N2001/2886 ,  G06T17/00 ,  G06T2200/08

    Abstract: A laser ablation tomography system includes a specimen stage for supporting a specimen. A specimen axis is defined such that a specimen disposed generally on the axis may be imaged. A laser system is operable to produce a laser sheet in a plane intersecting the specimen axis and generally perpendicular thereto. An imaging system is operable to image the area where the laser sheet intersects the specimen axis.

    Abstract translation: 激光烧蚀断层摄影系统包括用于支撑样本的样本台。 样本轴被定义为可以对通常设置在轴上的样本进行成像。 激光系统可操作以在与样本轴线相交并且与其垂直的平面中产生激光片。 成像系统可操作以对激光片与样本轴线相交的区域进行成像。

    Method for manufacturing overhanging material by pulsed, voxel-wise buildup
    3.
    发明授权
    Method for manufacturing overhanging material by pulsed, voxel-wise buildup 有权

    公开(公告)号：US10046394B2

    公开(公告)日：2018-08-14

    申请号：US14852928

    申请日：2015-09-14

    Applicant: The Penn State Research Foundation

    Inventor： Abdalla R. Nassar ,  Edward W. Reutzel

    IPC: B22F3/105 ,  B29C67/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

    Abstract: A method for manufacturing material voxel-by-voxel using directed-energy deposition is given. Using the method, unsupported structures, via voxel-wise directed-energy deposition, with steep overhangs is described and demonstrated. Methods for forming arbitrarily-complex structures and shaped voxels and surfaces are also given. A method for forming materials with internally-varying properties is also given. The method utilizes a pulsed or modulated, rather than continuous-wave energy source, thus allowing rapid solidification of voxels, rather than contours, hatches or tracks. Tuning of pulsing or modulation, material flow, and deposition-path parameters allows the buildup of unsupported material using standard directed-energy deposition processing heads and 3-axis stages, for example. The methods are demonstrated using a modified-directed-energy-deposition processes and is applicable to powder-bed for the buildup of three-dimensional components, repair and the addition of features to existing components.

    3D laser ablation tomography
    5.
    发明授权
    3D laser ablation tomography 有权
    3D激光烧蚀层析成像

    公开(公告)号：US09437041B2

    公开(公告)日：2016-09-06

    申请号：US14067502

    申请日：2013-10-30

    Applicant: The Penn State Research Foundation

    Inventor： Benjamin Hall ,  Jonathan Lynch ,  Edward W. Reutzel ,  Galen Lynch

    IPC: G01N1/00 ,  G06T17/00 ,  G01N1/06 ,  G01N1/04 ,  G01N1/28

    CPC classification number: G01N1/06 ,  G01N21/27 ,  G01N2001/045 ,  G01N2001/2886 ,  G06T17/00 ,  G06T2200/08

    Abstract: A laser ablation tomography system includes a specimen stage for supporting a specimen. A specimen axis is defined such that a specimen disposed generally on the axis may be imaged. A laser system is operable to produce a laser sheet in a plane intersecting the specimen axis and generally perpendicular thereto. An imaging system is operable to image the area where the laser sheet intersects the specimen axis.

    Abstract translation: 激光烧蚀断层摄影系统包括用于支撑样本的样本台。 样本轴被定义为可以对通常设置在轴上的样本进行成像。 激光系统可操作以在与样本轴线相交并且与其垂直的平面中产生激光片。 成像系统可操作以对激光片与样本轴线相交的区域进行成像。

    MULTI-SPECTRAL METHOD FOR DETECTION OF ANOMALIES DURING POWDER BED FUSION ADDITIVE MANUFACTURING
    8.
    发明申请
    MULTI-SPECTRAL METHOD FOR DETECTION OF ANOMALIES DURING POWDER BED FUSION ADDITIVE MANUFACTURING 审中-公开

    公开(公告)号：US20200061710A1

    公开(公告)日：2020-02-27

    申请号：US16540243

    申请日：2019-08-14

    Applicant: The Penn State Research Foundation

    Inventor： Abdalla R. Nassar ,  Alexander J. Dunbar ,  Edward W. Reutzel

    IPC: B22F3/105 ,  G01J3/02 ,  G01J3/443 ,  B33Y50/02

    Abstract: Embodiments of the systems can be configured to receive electromagnetic emissions of a substrate (e.g., a build material of a part being made via additive manufacturing) by a detector (e.g., a multi-spectral sensor) and generate a ratio of the electromagnetic emissions to perform spectral analysis with a reduced dependence on location and orientation of a surface of the substrate relative to the multi-spectral sensor. The additive manufacturing process can involve use of a laser to generate a laser beam for fusion of the build material into the part. The system can be configured to set the multi-spectral sensor off-axis with respect to the laser (e.g., an optical path of the multi-spectral sensor is at an angle that is different than the angle of incidence of the laser beam). This can allow the multi-spectral sensor to collect spectral data simultaneously as the laser is used to build the part.

    Multi-Spectral Method For Detection of Anomalies During Powder Bed Fusion Additive Manufacturing
    10.
    发明申请
    Multi-Spectral Method For Detection of Anomalies During Powder Bed Fusion Additive Manufacturing 有权

    公开(公告)号：US20220212256A1

    公开(公告)日：2022-07-07

    申请号：US17655636

    申请日：2022-03-21

    Applicant: The Penn State Research Foundation

    Inventor： Abdalla R. Nassar ,  Alexander J. Dunbar ,  Edward W. Reutzel

    IPC: B22F10/20 ,  G01J3/02 ,  G01J3/443 ,  B33Y50/02

    Abstract: Embodiments of the systems can be configured to receive electromagnetic emissions of a substrate (e.g., a build material of a part being made via additive manufacturing) by a detector (e.g., a multi-spectral sensor) and generate a ratio of the electromagnetic emissions to perform spectral analysis with a reduced dependence on location and orientation of a surface of the substrate relative to the multi-spectral sensor. The additive manufacturing process can involve use of a laser to generate a laser beam for fusion of the build material into the part. The system can be configured to set the multi-spectral sensor off-axis with respect to the laser (e.g., an optical path of the multi-spectral sensor is at an angle that is different than the angle of incidence of the laser beam). This can allow the multi-spectral sensor to collect spectral data simultaneously as the laser is used to build the part.

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