Advanced flaw manufacturing and crack growth control

M. Kemppainen, Jorma Pitkänen, I. Virkkunen, Hannu Hänninen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


Advanced artificial flaw manufacturing method has become available. The method produces true fatigue cracks, which are representative of most service‐induced cracks. These cracks can be used to simulate behaviour of realistic cracks under service conditions. This paper introduces studies of the effects of different thermal loading cycles to crack opening and residual stress state as seen at the surface of the sample and in the ultrasonic signal. In‐situ measurements were performed under dynamic thermal fatigue loading of a 20 mm long artificial crack.
Original languageEnglish
Title of host publicationQuantitative Nondestructive Evaluation
PublisherAmerican Institute of Physics (AIP)
ISBN (Print)978-0-7354-0173-0
Publication statusPublished - 2004
MoE publication typeA4 Article in a conference publication
EventReview of Progress in Quantitative Nondestructive Evaluation Conference, QNDE - Green Bay, United States
Duration: 27 Jul 20031 Aug 2003

Publication series

SeriesAIP Conference Proceedings


ConferenceReview of Progress in Quantitative Nondestructive Evaluation Conference, QNDE
Country/TerritoryUnited States
CityGreen Bay


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