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Browsing by Author "Virkkunen, Iikka"

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Title: Augmented Ultrasonic Data for Machine Learning Author(s): Virkkunen, Iikka; Koskinen, Tuomas; Jessen-Juhler, Oskari; Rinta-aho, Jari Date: 2021-03 Series: Journal of Nondestructive Evaluation, Volume 40, issue 1
Title: Automated defect detection in digital radiography of aerospace welds using deep learning Author(s): Tyystjärvi, Topias; Virkkunen, Iikka; Fridolf, Peter; Rosell, Anders; Barsoum, Zuheir Date: 2022-04 Series: Welding in the World, Volume 66, issue 4
Title: Automated Flaw Detection in Multi-channel Phased Array Ultrasonic Data Using Machine Learning Author(s): Siljama, Oskar; Koskinen, Tuomas; Jessen-Juhler, Oskari; Virkkunen, Iikka Date: 2021-09 Series: Journal of Nondestructive Evaluation, Volume 40, issue 3
Title: Comparison of â Versus a and Hit/Miss POD-Estimation Methods : A European Viewpoint Author(s): Virkkunen, Iikka; Koskinen, Tuomas; Papula, Suvi; Sarikka, Teemu; Hänninen, Hannu Date: 2019-12-01 Series: Journal of Nondestructive Evaluation, Volume 38, issue 4
Title: The Effect of Different Flaw Data to Machine Learning Powered Ultrasonic Inspection Author(s): Koskinen, Tuomas; Virkkunen, Iikka; Siljama, Oskar; Jessen-Juhler, Oskari Date: 2021-03 Series: Journal of Nondestructive Evaluation, Volume 40, issue 1
Title: Effect of Feedback and Variation on Inspection Reliability Author(s): Virkkunen, Iikka; Haapalainen, Jonne; Papula, Suvi; Sarikka, Teemu; Kotamies, Juha; Hänninen, Hannu Date: 2017-12-01 Series: 7th European-American Workshop on Reliability of NDE
Title: The effect of subsurface crack opening on the stress intensity factor under cyclic thermal loads Author(s): Kuutti, Juha; Virkkunen, Iikka Date: 2019-09-01 Series: Engineering Fracture Mechanics, articlenumber 106600
Title: Effect of thermal ageing at 400 °C on the microstructure of ferrite-austenite interface of nickel-base alloy narrow-gap dissimilar metal weld Author(s): Ahonen, Matias; Mouginot, Roman; Sarikka, Teemu; Lindqvist, Sebastian; Que, Zaiqing; Ehrnstén, Ulla; Virkkunen, Iikka; Hänninen, Hannu Date: 2020-03-24 Series: Metals, Volume 10, issue 3
Title: Hydrogen-induced delayed cracking in TRIP-aided lean-alloyed ferritic-austenitic stainless steels Author(s): Papula, Suvi; Sarikka, Teemu; Anttila, Severi; Talonen, Juho; Virkkunen, Iikka; Hänninen, Hannu Date: 2017-06-03 Series: MATERIALS, Volume 10, issue 6
Title: Online nonlinear ultrasound imaging of crack closure during thermal fatigue loading Author(s): Koskinen, Tuomas; Kuutti, Juha; Virkkunen, Iikka; Rinta-aho, Jari Date: 2021-10 Series: NDT and E International, Volume 123
Title: Selective laser melting of duplex stainless Steel 2205 : Effect of post-processing heat treatment on microstructure, mechanical properties, and corrosion resistance Author(s): Papula, Suvi; Song, Mingshi; Pateras, Aaron; Chen, Xiao Bo; Brandt, Milan; Easton, Mark; Yagodzinskyy, Yuriy; Virkkunen, Iikka; Hänninen, Hannu Date: 2019-08-01 Series: Materials, Volume 12, issue 15
Title: Study of cracking and microstructure in Co-free valve seat hardfacing Author(s): Que, Zaiqing; Ahonen, Matias; Virkkunen, Iikka; Nevasmaa, Pekka; Rautala, Paavo; Reinvall, Hannu Date: 2022-06 Series: Nuclear Materials and Energy, Volume 31
Title: Thermal fatigue of austenitic and duplex stainless steels Author(s): Virkkunen, Iikka Date: 2001-11-23 Series: Acta polytechnica Scandinavica. Me, 154 | Doctoral thesis (monograph)
Title: Thermal fatigue of duplex stainless steels used in paper machine suction rolls Author(s): Virkkunen, Iikka Date: 1998 Helsinki University of Technology | Master's thesis
Title: Virtual round robin – A new opportunity to study NDT reliability Author(s): Virkkunen, Iikka; Koskinen, Tuomas; Jessen-Juhler, Oskari Date: 2021-08-15 Series: Nuclear Engineering and Design, Volume 380