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    Predicting the Operability of Damaged Compressors Using Machine Learning

    Source: Journal of Turbomachinery:;2020:;volume( 142 ):;issue: 005
    Author:
    Taylor, J. V.
    ,
    Conduit, B.
    ,
    Dickens, A.
    ,
    Hall, C.
    ,
    Hillel, M.
    ,
    Miller, R. J.
    DOI: 10.1115/1.4046658
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: The application of machine learning to aerospace problems faces a particular challenge. For successful learning, a large amount of good quality training data is required, typically tens of thousands of cases. However, due to the time and cost of experimental aerospace testing, these data are scarce. This paper shows that successful learning is possible with two novel techniques: The first technique is rapid testing. Over the last 5 years, the Whittle Laboratory has developed a capability where rebuild and test times of a compressor stage now take 15 min instead of weeks. The second technique is to base machine learning on physical parameters, derived from engineering wisdom developed in industry over many decades. The method is applied to the important industry problem of predicting the effect of blade damage on compressor operability. The current approach has high uncertainty, and it is based on human judgement and correlation of a handful of experimental test cases. It is shown using 100 training cases and 25 test cases that the new method is able to predict the operability of damaged compressor stages with an accuracy of 2% in a 95% confidence interval; far better than is possible by even the most experienced compressor designers. Use of the method is also shown to generate new physical understanding, previously unknown by any of the experts involved in this work. Using this method in the future offers an exciting opportunity to generate understanding of previously intractable problems in aerospace.
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      Predicting the Operability of Damaged Compressors Using Machine Learning

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4274410
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    contributor authorTaylor, J. V.
    contributor authorConduit, B.
    contributor authorDickens, A.
    contributor authorHall, C.
    contributor authorHillel, M.
    contributor authorMiller, R. J.
    date accessioned2022-02-04T14:48:23Z
    date available2022-02-04T14:48:23Z
    date copyright2020/04/30/
    date issued2020
    identifier issn0889-504X
    identifier otherturbo_142_5_051010.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4274410
    description abstractThe application of machine learning to aerospace problems faces a particular challenge. For successful learning, a large amount of good quality training data is required, typically tens of thousands of cases. However, due to the time and cost of experimental aerospace testing, these data are scarce. This paper shows that successful learning is possible with two novel techniques: The first technique is rapid testing. Over the last 5 years, the Whittle Laboratory has developed a capability where rebuild and test times of a compressor stage now take 15 min instead of weeks. The second technique is to base machine learning on physical parameters, derived from engineering wisdom developed in industry over many decades. The method is applied to the important industry problem of predicting the effect of blade damage on compressor operability. The current approach has high uncertainty, and it is based on human judgement and correlation of a handful of experimental test cases. It is shown using 100 training cases and 25 test cases that the new method is able to predict the operability of damaged compressor stages with an accuracy of 2% in a 95% confidence interval; far better than is possible by even the most experienced compressor designers. Use of the method is also shown to generate new physical understanding, previously unknown by any of the experts involved in this work. Using this method in the future offers an exciting opportunity to generate understanding of previously intractable problems in aerospace.
    publisherThe American Society of Mechanical Engineers (ASME)
    titlePredicting the Operability of Damaged Compressors Using Machine Learning
    typeJournal Paper
    journal volume142
    journal issue5
    journal titleJournal of Turbomachinery
    identifier doi10.1115/1.4046658
    page51010
    treeJournal of Turbomachinery:;2020:;volume( 142 ):;issue: 005
    contenttypeFulltext
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