Atlas plus: Design of large scale fracture mechanics tests on a ferritic pipe

Tomas Nicak, Tobias Bolinder, Elisabeth Keim, Alexander Eriksson, Patrick Le Delliou, Anna Dahl, Kim Wallin

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

Abstract

This paper summarizes the design calculations performed by Framatome, EDF, KIWA INSPECTA and VTT for three large scale tests on ferritic pipes made of material WB 36 (15 NiCuMoNb 5). The large scale tests will be performed on a 4-point bending test facility provided by EDF under displacement control at room temperature. The overall goal of the planned large scale tests is to demonstrate the effect of the crack tip constraint on the fracture toughness at the component level. Results of those tests will be utilized to develop and validate advanced tools for structural integrity assessment within WP 3 particularly with respect to the transferability of material properties from small scale specimens to large scale components as well as for the development and validation of a procedure for the determination of component fracture resistance curves. Three configurations of the initial defect with different constraint conditions (one through-wall and two surface cracks) are considered. The design calculations are divided into two parts. In the first part an optimization of three different crack shapes is performed on basis of the standard fracture mechanics approach (based on J-Integral) without consideration of the constraint effect. In the second part a quantification of the crack tip constraint for the selected crack configurations from part I is performed. The effect of the constraint on the crack initiation and propagation for the selected crack configurations shall be assessed and compared between each other. Based on these calculations the final flaw configuration for each large scale experiment is selected.
Original languageEnglish
Title of host publicationProceedings of the ASME 2018 Pressure Vessels and Piping Conference
Subtitle of host publicationMaterials and Fabrication
PublisherAmerican Society of Mechanical Engineers ASME
Number of pages12
Volume6A
ISBN (Print)978-0-7918-5167-8
DOIs
Publication statusPublished - 2018
MoE publication typeA4 Article in a conference publication
EventASME 2018 Pressure Vessels and Piping Conference, PVP2018 - Hotel Hilton, Prague, Czech Republic
Duration: 15 Jul 201820 Jul 2018
Conference number: 52

Conference

ConferenceASME 2018 Pressure Vessels and Piping Conference, PVP2018
Abbreviated titlePVP2018
CountryCzech Republic
CityPrague
Period15/07/1820/07/18

Fingerprint

Fracture mechanics
Pipe
Cracks
Crack tips
Fracture toughness
Displacement control
Defects
Bending tests
Structural integrity
Test facilities
Crack initiation
Crack propagation
Materials properties
Experiments
Temperature

Keywords

  • piping
  • fracture toughness
  • constraint effect
  • transferability
  • design

Cite this

Nicak, T., Bolinder, T., Keim, E., Eriksson, A., Le Delliou, P., Dahl, A., & Wallin, K. (2018). Atlas plus: Design of large scale fracture mechanics tests on a ferritic pipe. In Proceedings of the ASME 2018 Pressure Vessels and Piping Conference: Materials and Fabrication (Vol. 6A). [PVP2018-84628] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/PVP2018-84628
Nicak, Tomas ; Bolinder, Tobias ; Keim, Elisabeth ; Eriksson, Alexander ; Le Delliou, Patrick ; Dahl, Anna ; Wallin, Kim. / Atlas plus : Design of large scale fracture mechanics tests on a ferritic pipe. Proceedings of the ASME 2018 Pressure Vessels and Piping Conference: Materials and Fabrication. Vol. 6A American Society of Mechanical Engineers ASME, 2018.
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Nicak, T, Bolinder, T, Keim, E, Eriksson, A, Le Delliou, P, Dahl, A & Wallin, K 2018, Atlas plus: Design of large scale fracture mechanics tests on a ferritic pipe. in Proceedings of the ASME 2018 Pressure Vessels and Piping Conference: Materials and Fabrication. vol. 6A, PVP2018-84628, American Society of Mechanical Engineers ASME, ASME 2018 Pressure Vessels and Piping Conference, PVP2018, Prague, Czech Republic, 15/07/18. https://doi.org/10.1115/PVP2018-84628

Atlas plus : Design of large scale fracture mechanics tests on a ferritic pipe. / Nicak, Tomas; Bolinder, Tobias; Keim, Elisabeth; Eriksson, Alexander; Le Delliou, Patrick; Dahl, Anna; Wallin, Kim.

Proceedings of the ASME 2018 Pressure Vessels and Piping Conference: Materials and Fabrication. Vol. 6A American Society of Mechanical Engineers ASME, 2018. PVP2018-84628.

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

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Nicak T, Bolinder T, Keim E, Eriksson A, Le Delliou P, Dahl A et al. Atlas plus: Design of large scale fracture mechanics tests on a ferritic pipe. In Proceedings of the ASME 2018 Pressure Vessels and Piping Conference: Materials and Fabrication. Vol. 6A. American Society of Mechanical Engineers ASME. 2018. PVP2018-84628 https://doi.org/10.1115/PVP2018-84628