Probability of detection model based on hit/miss data considering multiple signal features and multiple flaw parameters from eddy current testing suffering Iow signal to noise ratio

• Autorzy: Tomizawa Takuma , Song Haicheng , Yusa Noritaka , Yuya Hideki

Identyfikatory

DOI

10.26357/BNID.2021.003

Warianty tytułu

PL

Prawdopodobieństwo modelu detekcji opartego na danych typu „hit/miss" z uwzględnieniem wielu parametrów wad i wielu cech sygnałów uzyskanych z testowania metodą prądów wirowych przy niskim stosunku sygnału do szumu

• Języki publikacji: EN

Abstrakty

EN

The study developed a probabilistic method based on hit/miss analysis to evaluate the detection capability of eddy current testing (ECT) under low signal-to-noise (S/N) ratio. taking into consideration multiple signal features and multiple (law parameters. Realistic corrosion pits on Stainless steel clads were prepared and eddy current inspection was conducted to gather flaw signal and noise. The proposed method was applied to the experimental data. Hit/miss of flaw signals were judged by the threshold using multiple signal features. The hit/miss results were fitted to the selected function of probability of detection (POD) based on extended Information criteria. The PODs 95% upper confidence bounds were generated by boot strap method. experimental results, generated POD contours. and 95% upper confidence bounds indicate that the proposed method allows for reasonable evaluation of the detection capability.

PL

W ramach prowadzonych badań opracowano metodę probabilistyczną opartą na analizie „hit/miss", aby ocenie możliwość wykrywania wad metodą prądów wirowych (ECT) przy niskim stosunku sygnału do szumu (S/N), biorąc pod uwagę wiele cech sygnału i wiele parametrów wad. Przygotowano realistyczne wżery korozyjne w stali nierdzewnej i przeprowadzono badania prądami wirowymi w celu zebrania sygnału wad i szumów. Zaproponowaną metodę zastosowano do danych eksperymentalnych. Analizę „hit/miss", sygnałów przeprowadzono z wykorzystaniem progowania wykonanego w przypadku wielu cech sygnału. Wyniki „hit/miss” dopasowano do wybranej funkcji prawdopodobieństwa detekcji (POD) na podstawie rozszerzonych kryteriów informacyjnych. Górne (95%) granice ufności POD zostały wygenerowane metodą bootstrap. Wyniki eksperymentalne, wygenerowane krzywe POD i 95% górne granice ufności wskazują, że proponowana metoda pozwala na ocenę zdolności wykrywania.

Słowa kluczowe

EN

weld; cladding; stainless steel; corrosion pit; non-destructive testing

PL

spawy; powłoki; stal nierdzewna; wżery korozyjne; badania nieniszczące

• Wydawca: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
• Czasopismo: Badania Nieniszczące i Diagnostyka
• Rocznik: 2021
• Tom: nr 1-2
• Strony: 13--18
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr., wz.

Twórcy

autor

Tomizawa Takuma

• Department of Quantum Science and Energy Engineering, Graduate School of Engineering. Tohoku Universrty. 6-6-01-2. Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan

autor

Song Haicheng

• Department of Quantum Science and Energy Engineering, Graduate School of Engineering. Tohoku Universrty. 6-6-01-2. Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan

autor

Yusa Noritaka

• Department of Quantum Science and Energy Engineering, Graduate School of Engineering. Tohoku Universrty. 6-6-01-2. Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi, 980-8579, Japan

autor

Yuya Hideki

• Nuclear Society Research & Development Center, Chubu Electric Power Co., Inc. 5561, Sakura, Omaezoki, Shizuoka 437-1695, Japan

Bibliografia

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