Effect of Prestrain on Fatigue Crack Growth in Low-carbon Steel
The current procedures of fatigue design of marine pipeline components allow for extending service life by considering a certain portion of the crack growth well before it turns into the instable phase. In structural components of transport systems material may undergo plastic pre-strain during the...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Peter the Great St. Petersburg Polytechnic University
2011-05-01
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| Series: | Инженерно-строительный журнал |
| Subjects: | |
| Online Access: | http://www.engstroy.spb.ru/index_2011_03/petinov_cracks.pdf |
| _version_ | 1818308521303736320 |
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| author | Melnikov B.E. Petinov S.V. |
| author_facet | Melnikov B.E. Petinov S.V. |
| author_sort | Melnikov B.E. |
| collection | DOAJ |
| description | The current procedures of fatigue design of marine pipeline components allow for extending service life by considering a certain portion of the crack growth well before it turns into the instable phase. In structural components of transport systems material may undergo plastic pre-strain during the construction. The effect of pre-strain on the crack growth may be different depending on the material properties. Fatigue crack propagation was examined in testing symmetrically notched specimens machined from pre-strained steel plate coupons. Non-simultaneous crack initiation and propagation at the notches was reduced to symmetrical scheme by a simple coordinate transformation procedure. It was found that tensile pre-strain up to 0.01 did not substantially change the crack growth rate related to the stress intensity factor scale. Further increase of plastic pre-strain of material up to 0.15 caused almost two-times slowing down the crack growth rate compared to that of virgin material. |
| first_indexed | 2024-12-13T07:15:36Z |
| format | Article |
| id | doaj.art-782d5e6d13fc4e6d8da6e581a7d0ec12 |
| institution | Directory Open Access Journal |
| issn | 2071-4726 2071-0305 |
| language | English |
| last_indexed | 2024-12-13T07:15:36Z |
| publishDate | 2011-05-01 |
| publisher | Peter the Great St. Petersburg Polytechnic University |
| record_format | Article |
| series | Инженерно-строительный журнал |
| spelling | doaj.art-782d5e6d13fc4e6d8da6e581a7d0ec122022-12-21T23:55:34ZengPeter the Great St. Petersburg Polytechnic UniversityИнженерно-строительный журнал2071-47262071-03052011-05-012137174Effect of Prestrain on Fatigue Crack Growth in Low-carbon SteelMelnikov B.E.Petinov S.V.The current procedures of fatigue design of marine pipeline components allow for extending service life by considering a certain portion of the crack growth well before it turns into the instable phase. In structural components of transport systems material may undergo plastic pre-strain during the construction. The effect of pre-strain on the crack growth may be different depending on the material properties. Fatigue crack propagation was examined in testing symmetrically notched specimens machined from pre-strained steel plate coupons. Non-simultaneous crack initiation and propagation at the notches was reduced to symmetrical scheme by a simple coordinate transformation procedure. It was found that tensile pre-strain up to 0.01 did not substantially change the crack growth rate related to the stress intensity factor scale. Further increase of plastic pre-strain of material up to 0.15 caused almost two-times slowing down the crack growth rate compared to that of virgin material.http://www.engstroy.spb.ru/index_2011_03/petinov_cracks.pdfplastic pre-strain of steelfatigue crack growth rateeffect of pre-strain on crack propagation |
| spellingShingle | Melnikov B.E. Petinov S.V. Effect of Prestrain on Fatigue Crack Growth in Low-carbon Steel Инженерно-строительный журнал plastic pre-strain of steel fatigue crack growth rate effect of pre-strain on crack propagation |
| title | Effect of Prestrain on Fatigue Crack Growth in Low-carbon Steel |
| title_full | Effect of Prestrain on Fatigue Crack Growth in Low-carbon Steel |
| title_fullStr | Effect of Prestrain on Fatigue Crack Growth in Low-carbon Steel |
| title_full_unstemmed | Effect of Prestrain on Fatigue Crack Growth in Low-carbon Steel |
| title_short | Effect of Prestrain on Fatigue Crack Growth in Low-carbon Steel |
| title_sort | effect of prestrain on fatigue crack growth in low carbon steel |
| topic | plastic pre-strain of steel fatigue crack growth rate effect of pre-strain on crack propagation |
| url | http://www.engstroy.spb.ru/index_2011_03/petinov_cracks.pdf |
| work_keys_str_mv | AT melnikovbe effectofprestrainonfatiguecrackgrowthinlowcarbonsteel AT petinovsv effectofprestrainonfatiguecrackgrowthinlowcarbonsteel |