Method of resonant inspection for additive manufacturing

    公开(公告)号:US11020954B2

    公开(公告)日:2021-06-01

    申请号:US16703467

    申请日:2019-12-04

    Inventor: JinQuan Xu

    Abstract: A method of additive manufacturing comprises determining a first resonant frequency of an unflawed reference workpiece at a first partial stage of completion, fabricating a production workpiece to the first partial stage of completion via additive manufacture, sensing a second resonant frequency of the production workpiece in-situ at the first partial stage of completion, during the fabrication, analyzing the workpiece for flaws based on comparison of the first and second resonant frequencies, and providing an output indicative of production workpiece condition, based on the analysis.
    An additive manufacturing system comprises an additive manufacturing tool, a sensor, and a controller. The additive manufacturing tool is disposed to construct a workpiece via iterative layer deposition. The sensor is disposed to determine a resonant frequency of the workpiece in-situ at the additive manufacturing tool, during fabrication. The controller is configured to terminate manufacture of the workpiece if the resonant frequency differs substantially from a reference frequency.

    Gas turbine engine component with cooling holes having variable roughness

    公开(公告)号:US10539026B2

    公开(公告)日:2020-01-21

    申请号:US15710874

    申请日:2017-09-21

    Inventor: JinQuan Xu

    Abstract: A gas turbine engine component has an engine component body and at least one hole formed within the engine component body and extends between a hole inlet and a hole outlet. The hole has a first portion with a first roughness and a second portion having a second roughness that is less than the first roughness. The first portion is upstream of the second portion. A gas turbine engine and a method of forming a cooling hole are also disclosed.

    COOLED FUEL INJECTOR SYSTEM FOR A GAS TURBINE ENGINE AND A METHOD FOR OPERATING THE SAME

    公开(公告)号:US20200018234A1

    公开(公告)日:2020-01-16

    申请号:US16519471

    申请日:2019-07-23

    Inventor: JinQuan Xu

    Abstract: A cooled fuel injector system of a combustor section of a gas turbine engine is provided. At least a part of the fuel injector system is exposed to core gas flow traveling through the engine. The cooled fuel injector system includes a source of a first cooling fluid and a fuel injector system component. The first cooling fluid is at a temperature lower than a temperature of the core gas flow proximate the fuel injector system. The fuel injector system component includes a vascular engineered structure lattice (VESL) structure, which VESL structure is in fluid communication with the source of the cooling fluid.

    Gas turbine engine component with converging/diverging cooling passage

    公开(公告)号:US10519778B2

    公开(公告)日:2019-12-31

    申请号:US15007775

    申请日:2016-01-27

    Abstract: A component for a gas turbine engine includes a gas path wall having a first surface and a second surface and a cooling hole extending through the gas path wall from the first surface to the second surface. The cooling hole includes an inlet portion having an inlet at the first surface, an outlet portion having an outlet at the second surface, and a transition defined between the inlet and the outlet. The inlet portion converges in a first direction from the inlet to the transition and diverges in a second direction from the inlet to the transition. The outlet portion diverges at least in one of the first and second directions from the transition to the outlet.

    Combustor wall for a gas turbine engine and method of acoustic dampening

    公开(公告)号:US10371381B2

    公开(公告)日:2019-08-06

    申请号:US14805963

    申请日:2015-07-22

    Inventor: JinQuan Xu

    Abstract: A vascular wall of a combustor that may be for a gas turbine engine includes a first face defining at least in-part a combustion chamber, a second face defining at least in-part a cooling air plenum, and a vascular lattice structure located between the first and second faces for distributing cooling air from the plenum and to the chamber. The vascular lattice structure may be configured to enhance cooling air flow where needed whiling providing structural support. The orientation of the vascular lattice structure may further contribute toward acoustic dampening.

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