Fracture Toughness Evaluation of Thick Press Hardened 22MnB5 Sheets for High Crash Performance Applications in Trucks
Proceedings
Document identifier: oai:DiVA.org:ltu-75751
Keyword: Engineering and Technology,
Mechanical Engineering,
Applied Mechanics,
Teknik och teknologier,
Maskinteknik,
Teknisk mekanik,
Solid Mechanics,
HållfasthetsläraPublication year: 2019Relevant Sustainable Development Goals (SDGs):
The SDG label(s) above have been assigned by OSDG.aiAbstract: The present work investigates the fracture toughness of a thick press hardened 22MnB5 steel sheet, in order to assess its applicability for truck safety parts. The fracture toughness is evaluated in the frame of the elastic plastic fracture mechanics (EPFM), in terms of essential work if fracture (EWF) and J-integral. Digital Image Correlation (DIC) measuring techniques are used to measure crack tip opening displacement and crack extension. It is shown that EWF presents some limitations for thick high strength metal sheet applications, making necessary the use of conventional EPFM procedures. Digital image analysis has shown to be very useful in fracture toughness characterization of thick press hardened steel sheets. The differences observed between different methodologies are discussed and results are compared to toughness values of different AHSS grades.
Authors
David Frómeta
Eurecat, Centre Tecnològic de Catalunya, Unit of Metallic and Ceramic Materials, Plaça de la Ciència, 2, Manresa 08243, Spain
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Sergi Parareda
Eurecat, Centre Tecnològic de Catalunya, Unit of Metallic and Ceramic Materials, Plaça de la Ciència, 2, Manresa 08243, Spain
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Antoni Lara
Eurecat, Centre Tecnològic de Catalunya, Unit of Metallic and Ceramic Materials, Plaça de la Ciència, 2, Manresa 08243, Spain
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Daniel Casellas
Luleå tekniska universitet; Material- och solidmekanik; Eurecat, Centre Tecnològic de Catalunya, Unit of Metallic and Ceramic Materials, Plaça de la Ciència, 2, Manresa 08243, Spain
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Jaume Pujante
Eurecat, Centre Tecnològic de Catalunya, Unit of Metallic and Ceramic Materials, Plaça de la Ciència, 2, Manresa 08243, Spain
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Pär Jonsén
Luleå tekniska universitet; Material- och solidmekanik
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Stefan Golling
Gestamp R&D, Box 929, 97 125 Luleå, Sweden
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Henrik Sieurin
SCANIA AB, Materials Technology Department SE-151 87 Södertälje, Sweden
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Mats Oldenburg
Luleå tekniska universitet; Material- och solidmekanik
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identifier: oai:DiVA.org:ltu-75751
datestamp: 2021-04-19T12:56:03Z
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recordCreationDate: 2019-08-29
identifier: http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-75751
titleInfo:
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lang: eng
title: Fracture Toughness Evaluation of Thick Press Hardened 22MnB5 Sheets for High Crash Performance Applications in Trucks
abstract: The present work investigates the fracture toughness of a thick press hardened 22MnB5 steel sheet in order to assess its applicability for truck safety parts. The fracture toughness is evaluated in the frame of the elastic plastic fracture mechanics (EPFM) in terms of essential work if fracture (EWF) and J-integral. Digital Image Correlation (DIC) measuring techniques are used to measure crack tip opening displacement and crack extension. It is shown that EWF presents some limitations for thick high strength metal sheet applications making necessary the use of conventional EPFM procedures. Digital image analysis has shown to be very useful in fracture toughness characterization of thick press hardened steel sheets. The differences observed between different methodologies are discussed and results are compared to toughness values of different AHSS grades.
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lang: eng
authority: uka.se
topic:
Engineering and Technology
Mechanical Engineering
Applied Mechanics
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lang: swe
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topic:
Teknik och teknologier
Maskinteknik
Teknisk mekanik
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topic: Solid Mechanics
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Published
9
ISBN för värdpublikation: 978-3-95735-104-3
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dateIssued: 2019
publisher: Wissenschaftliche Scripten
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titleInfo:
title: Hot sheet metal forming of high-performance steel
subTitle: Proceedings
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start: 113
end: 121
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title: CHS²-series
partNumber: 7
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