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    Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components

    Source: Journal of Engineering for Gas Turbines and Power:;2021:;volume( 143 ):;issue: 005::page 051022-1
    Author:
    Goldin, Andrew
    ,
    Scott-Emuakpor, Onome
    ,
    George, Tommy
    ,
    Runyon, Brian
    ,
    Cobb, Richard
    DOI: 10.1115/1.4050022
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The push for low cost and higher performance/efficient turbine engines has introduced a demand for novel technologies to improve robustness to vibrations resulting in high cycle fatigue (HCF). There have been many proposed solutions to this, some passive and some active. With the advent of additive manufacturing (AM), new damping techniques can now be incorporated directly into the design and manufacture process to suppress the vibrations that cause HCF. Recent work has been investigating new ways of using AM for turbine engine applications. A specifically innovative approach using laser powder bed fusion (LPBF) is of particular note. The use of internal pockets filled with the build powder but left unfused has proved to have damping quality with >90% force response reduction. This study will investigate the as-manufactured parts, damping endurance, and structural dynamic changes when this technology is applied to a compressor-like blade. This will be done by using multiple testing methods to investigate the performance and dynamics of the blade. The study will use a computed tomography (CT) scans to investigate the pockets, structured light scans to investigate the external geometry, modal assurance criteria (MAC) to investigate the structural dynamics, and a sinusoidal strain step test to investigate endurance. This study found similar endurance and damping capabilities as previously observed, in addition to finding that the inclusion of the unfused powder pockets did not affect mode shapes measured by the MAC.
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      Structural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components

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    contributor authorGoldin, Andrew
    contributor authorScott-Emuakpor, Onome
    contributor authorGeorge, Tommy
    contributor authorRunyon, Brian
    contributor authorCobb, Richard
    date accessioned2022-02-05T22:22:05Z
    date available2022-02-05T22:22:05Z
    date copyright3/15/2021 12:00:00 AM
    date issued2021
    identifier issn0742-4795
    identifier othergtp_143_05_051022.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4277411
    description abstractThe push for low cost and higher performance/efficient turbine engines has introduced a demand for novel technologies to improve robustness to vibrations resulting in high cycle fatigue (HCF). There have been many proposed solutions to this, some passive and some active. With the advent of additive manufacturing (AM), new damping techniques can now be incorporated directly into the design and manufacture process to suppress the vibrations that cause HCF. Recent work has been investigating new ways of using AM for turbine engine applications. A specifically innovative approach using laser powder bed fusion (LPBF) is of particular note. The use of internal pockets filled with the build powder but left unfused has proved to have damping quality with >90% force response reduction. This study will investigate the as-manufactured parts, damping endurance, and structural dynamic changes when this technology is applied to a compressor-like blade. This will be done by using multiple testing methods to investigate the performance and dynamics of the blade. The study will use a computed tomography (CT) scans to investigate the pockets, structured light scans to investigate the external geometry, modal assurance criteria (MAC) to investigate the structural dynamics, and a sinusoidal strain step test to investigate endurance. This study found similar endurance and damping capabilities as previously observed, in addition to finding that the inclusion of the unfused powder pockets did not affect mode shapes measured by the MAC.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleStructural Dynamic and Inherent Damping Characterization of Additively Manufactured Airfoil Components
    typeJournal Paper
    journal volume143
    journal issue5
    journal titleJournal of Engineering for Gas Turbines and Power
    identifier doi10.1115/1.4050022
    journal fristpage051022-1
    journal lastpage051022-8
    page8
    treeJournal of Engineering for Gas Turbines and Power:;2021:;volume( 143 ):;issue: 005
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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