Acoustical characterization of austenitic stainless steel welds for experimental and modeling NDT

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説明

Multipass welds made in 316-L stainless steel are specific welds of the primary circuit in nuclear power plants. Their complex structure complicates ultrasonic assessment of their structural integrity : they present a heterogeneous anisotropy that modifies wave propagation (deviation and division of the beam, high attenuation, high grain noise…). In order to understand ultrasonic propagation in such media, a finite-element model called Athena was developed (INRIA-EDF). Athena predicts ultrasonic beam and particle's velocity in heterogeneous and anisotropic materials, but attenuation has still to be integrated to the code. Our work aims at providing realistic input data of attenuation compatible with the existing model by studying mechanisms leading to attenuation in anisotropic structures. Experimental measurements are made with two immersion techniques using longitudinal waves. Results are presented and compared with theoretical predictions of the literature.

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詳細情報 詳細情報について

  • CRID
    1390282679319659136
  • NII論文ID
    130004487773
  • DOI
    10.2978/jsas.17.76
  • ISSN
    18813917
    09155651
  • 本文言語コード
    en
  • データソース種別
    • JaLC
    • Crossref
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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