Fracture energy of columnar freshwater ice
Funding Information: This work was funded though the Finland Distinguished Professor programme ”Scaling of Ice Strength: Measurements and Modeling”, and through the ARAJ research project, both funded by Business Finland and the industrial partners Aker Arctic Technology, Arctech Helsinki Shipyard, A...
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ftaaltouniv:oai:aaltodoc.aalto.fi:123456789/109836 2023-05-15T15:16:05+02:00 Fracture energy of columnar freshwater ice Gharamti, I. E. Dempsey, J. P. Polojärvi, A. Tuhkuri, J. Solid Mechanics Clarkson University Department of Mechanical Engineering Aalto-yliopisto Aalto University 2021-12 application/pdf https://aaltodoc.aalto.fi/handle/123456789/109836 https://doi.org/10.1016/j.mtla.2021.101188 en eng Elsevier BV Materialia Volume 20 Gharamti , I E , Dempsey , J P , Polojärvi , A & Tuhkuri , J 2021 , ' Fracture energy of columnar freshwater ice : Influence of loading type, loading rate and size ' , Materialia , vol. 20 , 101188 . https://doi.org/10.1016/j.mtla.2021.101188 2589-1529 PURE UUID: 4ec2b694-9421-4285-a946-2f04022fa260 PURE ITEMURL: https://research.aalto.fi/en/publications/4ec2b694-9421-4285-a946-2f04022fa260 PURE LINK: http://www.scopus.com/inward/record.url?scp=85113787948&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/67188630/ENG_Gharamti_et_al_Fracture_energy_of_columnar_Materialia.pdf https://aaltodoc.aalto.fi/handle/123456789/109836 URN:NBN:fi:aalto-202109089064 doi:10.1016/j.mtla.2021.101188 openAccess Creep Fracture energy Freshwater ice J-integral Rate effect Size effect A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä publishedVersion 2021 ftaaltouniv https://doi.org/10.1016/j.mtla.2021.101188 2022-12-15T19:33:40Z Funding Information: This work was funded though the Finland Distinguished Professor programme ”Scaling of Ice Strength: Measurements and Modeling”, and through the ARAJ research project, both funded by Business Finland and the industrial partners Aker Arctic Technology, Arctech Helsinki Shipyard, Arctia Shipping, ABB Marine, Finnish Transport Agency, Suomen Hyȵtytuuli Oy, and Ponvia Oy. This financial support is gratefully acknowledged. The second author (J.P.D.) thanks Business Finland for support by the FiDiPro Professorship from Aalto University, and the sabbatical support from Aalto University, which collectively supported an annual visit 2015–2016, and summer visits 2017–2019. Publisher Copyright: © 2021 The Author(s) This work investigates the influence of loading type, loading rate, and test size on the fracture energy of columnar freshwater S2 ice. The ice sheet in the Ice tank at Aalto University was very warm (above -0.5 ∘C) and thick (0.34<h<0.41 m). A program of nineteen mode I fracture tests using deeply cracked edge-cracked rectangular plates of various sizes (size range 1:39), loading types, and loading rates were carried out. Fourteen displacement-controlled tests (DC) were loaded monotonically to fracture, and five load-controlled tests (LC) were conducted with creep/cyclic-recovery and monotonic loading to fracture. Different methods for computing the fracture energy were applied and compared. The apparent fracture energy at crack growth initiation was obtained via Rice's J-integral expression (JQ) modified to be applicable to the special case of a deeply cracked edge-cracked plate as well as via a viscoelastic fictitious crack analysis (GVFCM). The work-of-fracture (Wf) was also evaluated. Both JQ and Wf weremeasured from the load-displacement record at the crack mouth. GVFCM was obtained from the back-calculated stress-separation (σ−δ) relation within the fracture process zone. A rather good agreement was obtained between GVFCM and JQ, especially for the large specimens. JQ and Wf ... Article in Journal/Newspaper Arctic Ice Sheet Aalto University Publication Archive (Aaltodoc) Arctic Materialia 20 101188 |
institution |
Open Polar |
collection |
Aalto University Publication Archive (Aaltodoc) |
op_collection_id |
ftaaltouniv |
language |
English |
topic |
Creep Fracture energy Freshwater ice J-integral Rate effect Size effect |
spellingShingle |
Creep Fracture energy Freshwater ice J-integral Rate effect Size effect Gharamti, I. E. Dempsey, J. P. Polojärvi, A. Tuhkuri, J. Fracture energy of columnar freshwater ice |
topic_facet |
Creep Fracture energy Freshwater ice J-integral Rate effect Size effect |
description |
Funding Information: This work was funded though the Finland Distinguished Professor programme ”Scaling of Ice Strength: Measurements and Modeling”, and through the ARAJ research project, both funded by Business Finland and the industrial partners Aker Arctic Technology, Arctech Helsinki Shipyard, Arctia Shipping, ABB Marine, Finnish Transport Agency, Suomen Hyȵtytuuli Oy, and Ponvia Oy. This financial support is gratefully acknowledged. The second author (J.P.D.) thanks Business Finland for support by the FiDiPro Professorship from Aalto University, and the sabbatical support from Aalto University, which collectively supported an annual visit 2015–2016, and summer visits 2017–2019. Publisher Copyright: © 2021 The Author(s) This work investigates the influence of loading type, loading rate, and test size on the fracture energy of columnar freshwater S2 ice. The ice sheet in the Ice tank at Aalto University was very warm (above -0.5 ∘C) and thick (0.34<h<0.41 m). A program of nineteen mode I fracture tests using deeply cracked edge-cracked rectangular plates of various sizes (size range 1:39), loading types, and loading rates were carried out. Fourteen displacement-controlled tests (DC) were loaded monotonically to fracture, and five load-controlled tests (LC) were conducted with creep/cyclic-recovery and monotonic loading to fracture. Different methods for computing the fracture energy were applied and compared. The apparent fracture energy at crack growth initiation was obtained via Rice's J-integral expression (JQ) modified to be applicable to the special case of a deeply cracked edge-cracked plate as well as via a viscoelastic fictitious crack analysis (GVFCM). The work-of-fracture (Wf) was also evaluated. Both JQ and Wf weremeasured from the load-displacement record at the crack mouth. GVFCM was obtained from the back-calculated stress-separation (σ−δ) relation within the fracture process zone. A rather good agreement was obtained between GVFCM and JQ, especially for the large specimens. JQ and Wf ... |
author2 |
Solid Mechanics Clarkson University Department of Mechanical Engineering Aalto-yliopisto Aalto University |
format |
Article in Journal/Newspaper |
author |
Gharamti, I. E. Dempsey, J. P. Polojärvi, A. Tuhkuri, J. |
author_facet |
Gharamti, I. E. Dempsey, J. P. Polojärvi, A. Tuhkuri, J. |
author_sort |
Gharamti, I. E. |
title |
Fracture energy of columnar freshwater ice |
title_short |
Fracture energy of columnar freshwater ice |
title_full |
Fracture energy of columnar freshwater ice |
title_fullStr |
Fracture energy of columnar freshwater ice |
title_full_unstemmed |
Fracture energy of columnar freshwater ice |
title_sort |
fracture energy of columnar freshwater ice |
publisher |
Elsevier BV |
publishDate |
2021 |
url |
https://aaltodoc.aalto.fi/handle/123456789/109836 https://doi.org/10.1016/j.mtla.2021.101188 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Ice Sheet |
genre_facet |
Arctic Ice Sheet |
op_relation |
Materialia Volume 20 Gharamti , I E , Dempsey , J P , Polojärvi , A & Tuhkuri , J 2021 , ' Fracture energy of columnar freshwater ice : Influence of loading type, loading rate and size ' , Materialia , vol. 20 , 101188 . https://doi.org/10.1016/j.mtla.2021.101188 2589-1529 PURE UUID: 4ec2b694-9421-4285-a946-2f04022fa260 PURE ITEMURL: https://research.aalto.fi/en/publications/4ec2b694-9421-4285-a946-2f04022fa260 PURE LINK: http://www.scopus.com/inward/record.url?scp=85113787948&partnerID=8YFLogxK PURE FILEURL: https://research.aalto.fi/files/67188630/ENG_Gharamti_et_al_Fracture_energy_of_columnar_Materialia.pdf https://aaltodoc.aalto.fi/handle/123456789/109836 URN:NBN:fi:aalto-202109089064 doi:10.1016/j.mtla.2021.101188 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1016/j.mtla.2021.101188 |
container_title |
Materialia |
container_volume |
20 |
container_start_page |
101188 |
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