NDT methods for revealing anomalies and defects in gas turbine blades

Jorma Pitkänen, Toni Hakkarainen, Harri Jeskanen, Petri Kuusinen, Kari Lahdenperä, Pauli Särkiniemi, M. Kemppainen, M. Pihkakoski

    Research output: Contribution to journalArticleScientificpeer-review

    11 Citations (Scopus)

    Abstract

    The amount of energy produced by gas turbines is increasing all over the world. One important part in these gas turbines is the turbine blading. Improved blades and vanes are being introduced while the industry also uses the old generation of blade types. Applicable NDT methods are needed for all blade types. Many NDT-methods can be applied in laboratory environment. This overview describes a variety of methods for blade inspection such as dye penetrant, eddy current, radiography and ultrasonic methods. Some of these methods are considered on the basis of the experience gained in measurements. One new UT-method is described, easily transferable for practical inspections on site. A wide aperture VTT probe has been developed for the purpose. With this special probe different blade properties can be measured, such as coating thickness, detection and size of cracks, delaminations as well as mechanical properties.
    Original languageEnglish
    Pages (from-to)601-604
    Number of pages4
    JournalInsight: Non-Destructive Testing and Condition Monitoring
    Volume43
    Issue number9
    Publication statusPublished - 2001
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Nondestructive examination
    Turbomachine blades
    Gas turbines
    Inspection
    Defects
    Radiography
    Eddy currents
    Delamination
    Turbines
    Coloring Agents
    Dyes
    Ultrasonics
    Cracks
    Coatings
    Mechanical properties
    Industry

    Cite this

    Pitkänen, J., Hakkarainen, T., Jeskanen, H., Kuusinen, P., Lahdenperä, K., Särkiniemi, P., ... Pihkakoski, M. (2001). NDT methods for revealing anomalies and defects in gas turbine blades. Insight: Non-Destructive Testing and Condition Monitoring, 43(9), 601-604.
    Pitkänen, Jorma ; Hakkarainen, Toni ; Jeskanen, Harri ; Kuusinen, Petri ; Lahdenperä, Kari ; Särkiniemi, Pauli ; Kemppainen, M. ; Pihkakoski, M. / NDT methods for revealing anomalies and defects in gas turbine blades. In: Insight: Non-Destructive Testing and Condition Monitoring. 2001 ; Vol. 43, No. 9. pp. 601-604.
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    title = "NDT methods for revealing anomalies and defects in gas turbine blades",
    abstract = "The amount of energy produced by gas turbines is increasing all over the world. One important part in these gas turbines is the turbine blading. Improved blades and vanes are being introduced while the industry also uses the old generation of blade types. Applicable NDT methods are needed for all blade types. Many NDT-methods can be applied in laboratory environment. This overview describes a variety of methods for blade inspection such as dye penetrant, eddy current, radiography and ultrasonic methods. Some of these methods are considered on the basis of the experience gained in measurements. One new UT-method is described, easily transferable for practical inspections on site. A wide aperture VTT probe has been developed for the purpose. With this special probe different blade properties can be measured, such as coating thickness, detection and size of cracks, delaminations as well as mechanical properties.",
    author = "Jorma Pitk{\"a}nen and Toni Hakkarainen and Harri Jeskanen and Petri Kuusinen and Kari Lahdenper{\"a} and Pauli S{\"a}rkiniemi and M. Kemppainen and M. Pihkakoski",
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    Pitkänen, J, Hakkarainen, T, Jeskanen, H, Kuusinen, P, Lahdenperä, K, Särkiniemi, P, Kemppainen, M & Pihkakoski, M 2001, 'NDT methods for revealing anomalies and defects in gas turbine blades', Insight: Non-Destructive Testing and Condition Monitoring, vol. 43, no. 9, pp. 601-604.

    NDT methods for revealing anomalies and defects in gas turbine blades. / Pitkänen, Jorma; Hakkarainen, Toni; Jeskanen, Harri; Kuusinen, Petri; Lahdenperä, Kari; Särkiniemi, Pauli; Kemppainen, M.; Pihkakoski, M.

    In: Insight: Non-Destructive Testing and Condition Monitoring, Vol. 43, No. 9, 2001, p. 601-604.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - NDT methods for revealing anomalies and defects in gas turbine blades

    AU - Pitkänen, Jorma

    AU - Hakkarainen, Toni

    AU - Jeskanen, Harri

    AU - Kuusinen, Petri

    AU - Lahdenperä, Kari

    AU - Särkiniemi, Pauli

    AU - Kemppainen, M.

    AU - Pihkakoski, M.

    PY - 2001

    Y1 - 2001

    N2 - The amount of energy produced by gas turbines is increasing all over the world. One important part in these gas turbines is the turbine blading. Improved blades and vanes are being introduced while the industry also uses the old generation of blade types. Applicable NDT methods are needed for all blade types. Many NDT-methods can be applied in laboratory environment. This overview describes a variety of methods for blade inspection such as dye penetrant, eddy current, radiography and ultrasonic methods. Some of these methods are considered on the basis of the experience gained in measurements. One new UT-method is described, easily transferable for practical inspections on site. A wide aperture VTT probe has been developed for the purpose. With this special probe different blade properties can be measured, such as coating thickness, detection and size of cracks, delaminations as well as mechanical properties.

    AB - The amount of energy produced by gas turbines is increasing all over the world. One important part in these gas turbines is the turbine blading. Improved blades and vanes are being introduced while the industry also uses the old generation of blade types. Applicable NDT methods are needed for all blade types. Many NDT-methods can be applied in laboratory environment. This overview describes a variety of methods for blade inspection such as dye penetrant, eddy current, radiography and ultrasonic methods. Some of these methods are considered on the basis of the experience gained in measurements. One new UT-method is described, easily transferable for practical inspections on site. A wide aperture VTT probe has been developed for the purpose. With this special probe different blade properties can be measured, such as coating thickness, detection and size of cracks, delaminations as well as mechanical properties.

    M3 - Article

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    JO - Insight: Non-Destructive Testing and Condition Monitoring

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    SN - 1354-2575

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    Pitkänen J, Hakkarainen T, Jeskanen H, Kuusinen P, Lahdenperä K, Särkiniemi P et al. NDT methods for revealing anomalies and defects in gas turbine blades. Insight: Non-Destructive Testing and Condition Monitoring. 2001;43(9):601-604.