Iikka Virkkunen

Peer-reviewed scientific articles

Journal article-refereed, Original research

Hydrogen-induced delayed cracking in TRIP-aided lean-alloyed ferritic-austenitic stainless steels

Papula, Suvi; Sarikka, Teemu; Anttila, Severi; Talonen, Juho; Virkkunen, Iikka; Hänninen, Hannu

2017 in MATERIALS (MDPI AG)

ISSN: 1996-1944

Strain hardening of cold-rolled lean-alloyed metastable ferritic-austenitic stainless steels

Papula, Suvi; Anttila, Severi; Talonen, Juho; Sarikka, Teemu; Virkkunen, Iikka; Hänninen, Hannu

2016 in MATERIALS SCIENCE AND ENGINEERING A: STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING (ELSEVIER SCIENCE SA LAUSANNE)

ISSN: 0921-5093

Discussion on modeling of thermal fatigue cracks in numerical simulation based on eddy current signals

Wang, Jing; Yusa, Noritaka; Pan, Hongliang; Kemppainen, Mika; Virkkunen, Iikka; Hashizume, Hidetoshi

2013 in NDT & E INTERNATIONAL (ELSEVIER SCI LTD)

ISSN: 0963-8695

Crack characteristics and their importance to NDE

Kemppainen, Mika; Virkkunen, Iikka

2011 in JOURNAL OF NONDESTRUCTIVE EVALUATION (Springer New York)

ISSN: 0195-9298

Grown cracks for NDT development and qualification

Virkkunen, Iikka; Kempainen, Mika; Ostermeyer, Henner; Paussu, Raimo; Dunhill, Tony

2009 in INSIGHT (British Institute of Non-Destructive Testing)

ISSN: 1354-2575

Effect of stress on ultrasonic response in detection and sizing of cracks

Pitkänen, Jorma; Laukkanen, Anssi; Kemppainen, Mika; Virkkunen, Iikka

2007 in MATERIALS TESTING: MATERIALS AND COMPONENTS TECHNOLOGY AND APPLICATION (CARL HANSER VERLAG)

ISSN: 0025-5300

Comparison of Realistic Artificial Cracks and In-service Cracks

Kemppainen, Mika; Virkkunen, Iikka; Pitkänen, Jorma; Paussu, Raimo; Hänninen, Hannu

2003 in The e-Journal of Nondestructive Testing & Ultrasonics (CARL HANSER VERLAG)

Advanced Flaw Production Method for In-Service Inspection Qualification Mock-ups

Kemppainen, Mika; Virkkunen, Iikka; Pitkänen, Jorma; Paussu, Raimo; Hänninen, Hannu

2003 in Journal of Nuclear Engineering & Design (CARL HANSER VERLAG)

Realistic Cracks for In-Service Inspection Qualification Mock-ups

Kemppainen, Mika; Virkkunen, Iikka; Pitkänen, Jorma; Paussu, R.; Hänninen, Hannu

2003 in The e-Journal of Nondestructive Testing & Ultrasonics (CARL HANSER VERLAG)

Thermal Fatigue of Austenitic and Duplex Stainless Steels

Virkkunen, Iikka

2001 in Acta Polytechnica Scandinavica (CARL HANSER VERLAG)

Book section, Chapters in research books

Dissimilar metal weld joints and their performance in nuclear power plant and oil refinery conditions

Hänninen, Hannu; Aaltonen, Pertti; Brederholm, Anssi; Ehrnsteń, Ulla; Gripenberg, Hans; Toivonen, Aki; Pitkan̈en, Jorma; Virkkunen, Iikka

2006 in VTT Tiedotteita - Valtion Teknillinen Tutkimuskeskus (CARL HANSER VERLAG)

ISBN: 9513868052

ISSN: 1235-0605

Conference proceedings

Modeling of thermal fatigue crack for enhancement of electromagnetic nondestructive evaluation of nuclear power plant

Wang, Jing; Yusa, Noritaka; Pan, Hongliang; Kemppainen, Mika; Virkkunen, Iikka; Hashizume, Hidetoshi

2013

ISBN: 9780791855782

Plastic Strain and Residual Stress Distributions in AISI 304 Stainless Steel Power Plant Pipe Welds

Saukkonen, Tapio; Aalto, Miikka; Virkkunen, Iikka; Ehrnsten, Ulla; Hänninen, Hannu

2012

ISBN: 978-1-118-13241-8

New flaws for qualification of cast stainless steel inspection

Virkkunen, Iikka; Kull, Doug; Kemppainen, Mika

2012

ISBN: 9780791855003

Plastic strain and residual stress distributions in an AISI 304 stainless steel BWR pipe weld

Saukkonen, Tapio; Aalto, Miikka; Virkkunen, Iikka; Ehrnstén, Ulla; Hänninen, Hannu

2011

ISBN: 9781118132418

Advanced Flaw Manufacturing and Crack Growth Control

Kemppainen, M.; Pitkänen, J.; Virkkunen, Iikka; Hänninen, Hannu

2004

ISBN: 0-7354-0173-X

Ultrasonic Study of Crack under a Dynamic Load

Pitkänen, Jorma; Kemppainen, Mika; Virkkunen, Iikka

2004

Effect of Thermal Stresses along Crack Surface on Ultrasonic Response

Virkkunen, Iikka; Kemppainen, Mika; Pitkänen, Jorma; Hänninen, Hannu

2004

ISBN: 0-7354-0173-X

Production of Realistic Flaw in Inconel 600

Kemppainen, Mika; Virkkunen, Iikka; Pitkänen, Jorma; Hukkanen, Kari; Hänninen, Hannu

2003

Stress corrosion cracking and life prediction of austenitic stainless steels in calcium chloride solution

Leinonen, H.; Virkkunen, I.; Hänninen, Hannu

2003

ISBN: 0873395018

Thermal Fatigue In NDE Artificial Flaw Manufacturing for LWR Applications

Virkkunen, Iikka; Kemppainen, Mika; Hänninen, Hannu

2003

Realistic Cracks for In-Service Inspection Qualification Mock-ups

Kemppainen, Mika; Virkkunen, Iikka; Pitkänen, Jorma; Paussu, Rami; Hänninen, Hannu

2002

Stress Corrosion Cracing and Life Prediction of Austenitic Stainless Steels in Calcium Chloride Solution

Leinonen, Heikki; Virkkunen, Iikka; Hänninen, Hannu

2002

Miniaturisation of Mechanical and mechatronic systems

Lähteinen, Ville; Salonen, Mikko; Lindfors, Niklas; Virkkunen, Iikka

2002

Thermal Fatigue and NDE Qualification Applications

Virkkunen, Iikka; Kemppainen, Mika; Hänninen, Hannu

2002

Load Sharing in Duplex Stainless Steels Determined by Barkhausen Noise

Virkkunen, Iikka; Gripenberg, Hans; Hänninen, Hannu; Vilpas, Martti

2001

Thermal Fatigue of Duplex Stainless Steels

Virkkunen, I.; Hänninen, Hannu

2000

Thermal fatigue crack growth in austenitic stainless steels

Virkkunen, Iikka; Kemppainen, M; Hänninen, Hannu

1999

ISBN: 7-04-007582-2

Scientific books (monographs)

Book (editor)

Statistical Aspects of Fatigue and Fracture

Virkkunen, I.; Marquis, G.; Wallin, Kim; Hänninen, Hannu

2000

Publications intended for professional communities

Article in professional conference proceedings

Production of Real Flaws in Probability of Detection (POD-) Samples for Aerospace Applications

Kemppainen, M.; Virkkunen, I.

2012

Differences in Ultrasonic Indications - Thermal Fatigue Cracks and EDM Notches

Koskinen, A.; Haapalainen, J.; Virkkunen, I.; Kemppainen, M.

2012

Experiences on Massive Qualification Test Block Combining Many Inspection Areas

Paussu, R.; Pirinen, J.; Luostarinen, P.; Virkkunen, I.; Kemppainen, M.

2012

Detection and Sizing Surface Breaking Defects in Nodular Cast Iron Inserts

Pitkänen, J.; Lipponen, A.; Sarkimo, M.; Virkkunen, I.; Kemppainen, M.

2012

Metallographic Study of Detected Indications in EB-Copper Welds for Verifying the NDT Reliability of Inspections

Pitkänen, J.; Paussu, R.; Pohjanne, P.; Lipponen, A.; Sarkimo, M.; Simola, K.; Virkkunen, I.; Kemppainen, M.; Reddy, K.

2010

Proposed Improvements for Use of Different Qualification Defect Types -Three Generations of Defects

Virkkunen, I.; Kemppainen, M.; Paussu, R.; Pirinen, J.; Luostarinen, P.

2010

Recent Advances in Artificial Cracks for NDT Development and Qualification

Kemppainen, M.; Virkkunen, I.; Koskinen, A.

2009

The Influence of the Crack Opening in the UT Inspection Qualification

Packalén, T.; Sillanpää, J.; Kemppainen, M.; Virkkunen, I.; Paussu, R.

2008

Effect of crack opening on UT response

Kemppainen, M.; Virkkunen, I.; Pitkänen, J.

2006

Comparison of realistic artificial cracks and in-service cracks

Kemppainen, M.; Virkkunen, I.; Pitkänen, J.

2002

Published development or research report

Dissimilar Metal Weld Joints and their Performance in Nuclear Power Plant and Oil Refinery Conditions

Hänninen, Hannu; Aaltonen, Pertti; Brederholm, Anssi; Ehrnstén, Ulla; Gripenberg, Hans; Toivonen, Aki; Pitkänen, Jorma; Virkkunen, Iikka

2006

Thermal Fatigue Testing of the PWR Secondary Circuit Piping

Mononen, Janne; Virkkunen, Iikka; Hänninen, Hannu

2006

Critical Evaluation of the Effect of Alloyed Nitrogen on the Susceptibility of Stainless Steels to Environmentally Induced Cracking

Petterson, R.; Flyg, J.; Wessman, S.; Herting, G.; Ibrahim, N.; Fatehi, K.; Qvarfot, R.; Lo Piccolo, E.; Scoppio, L.; Ladwein, T.; Ligier, V.; Coudreuse, L.; Matres Serrano, V.; Hochölter, G.; Kristzt, K.; Richter, A.; Kivisäkk, U.; Leinonen, H.; Kinnunen, T.; Varis, P.; Nöjd, K.; Ohligschläger, T.; Virkkunen, Iikka; Hänninen, Hannu; Romu, Jyrki; Taulavuori, T.

2005

Residual Stresses Induced by Cyclic Thermal Loads

Virkkunen, I.; Kemppainen, M.; Hänninen, Hannu

2000

Kaasuturpiinit - esiselvitys

Auerkari, P.; Heikinheimo, L.; Korpiola, K.; Kauppinen, P.; Lepistö, T.; Vuoristo, P.; Hänninen, H.; Virkkunen, I.

1997

Patents and invention disclosures

Patent

Method for Producing Defects and Tensile Residual Stresses

Elfving, K.; Hänninen, Hannu; Kemppainen, Mika; Saarinen, P.; Virkkunen, Iikka

2004

Feasibility Study of Using eFlaws on Qualification of Nuclear Spent Fuel Disposal Canister Inspection

Virkkunen, Mikko; Rönneteg, Ulf; Grybäck, Thomas; Emilsson, Göran; Miettinen, Kaisa

2016

Practical Experiences in POD Determination for Airframe ET Inspection

Virkkunen, Mikko; Ylitalo, Marko

2016

Cracked Samples for Airframe Components

Virkkunen, I.; Patronen, J.; Ylitalo, M.

2015

Virtual flaws for NDE training and qualification

Virkkunen, I.; Miettinen, K.; Packalén, T.

2014

Quantifying NDE Reliability from ENIQ Qualification Information

Virkkunen, I.; Kemppainen, M.; Miettinen, K.

2014

Needs for massive mock ups and challenges in manufacturing of them for qualification purposes

Pirinen, J.; Paussu, R.; Nikula, V.; Virkkunen, I.; Kemppainen, M.; Miettinen, K.

2013

Effect of the different artificial flaw type in qualification purposes from the point of view of the inspection company

Vavrous, M.; Markulin, K.; Kemppainen, M.; Virkkunen, I.; Miettinen, K.

2013