Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE Simulation
<p>Optimal selection of material can be considered as one of the most critical steps in engineering design process. That is especially emphasized when dealing with constructions that operate in marine environment; high stresses and harsh operating conditions assert the importance of proper mat...
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| Format: | Article |
| Language: | English |
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Kaunas University of Technology
2017-02-01
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| Series: | Medžiagotyra |
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| Online Access: | http://matsc.ktu.lt/index.php/MatSc/article/view/13823 |
| _version_ | 1818483591978418176 |
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| author | Goran VUKELIC Josip BRNIC |
| author_facet | Goran VUKELIC Josip BRNIC |
| author_sort | Goran VUKELIC |
| collection | DOAJ |
| description | <p>Optimal selection of material can be considered as one of the most critical steps in engineering design process. That is especially emphasized when dealing with constructions that operate in marine environment; high stresses and harsh operating conditions assert the importance of proper material characterization before its selection. This paper presents comparison of two types of steel usually used in marine shaft manufacturing, chromium-molybdenum steel AISI 4140 and chromium low-alloy steel AISI 5120. Comparison was made using numerically determined <em>J</em>-integral, an important fracture mechanics parameter. <em>J</em>-integral values are determined numerically using finite element (FE) stress analysis results of compact tensile (CT) and single-edge notched bend (SENB) type specimens usually used in standardized <em>J</em>-integral experimental procedures. Obtained <em>J</em> values are plotted versus specimen crack growth values (Δ<em>a</em>) for different specimen geometries (<em>a/W</em>). Higher resulting values of <em>J</em>-integral for AISI 5120 than AISI 4140 can be noticed. Also, higher <em>a/W</em> ratios correspond to lower <em>J</em>-integral values of materials and vice versa. In addition to that, <em>J</em>-integral values obtained by using FE model of CT specimen give somewhat conservative results when compared with ones obtained by FE model of SENB specimen. Although this procedure differs from experimental analysis, results can be used a suitable fracture parameter value in fracture toughness assessment.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.23.1.13823">http://dx.doi.org/10.5755/j01.ms.23.1.13823</a></p> |
| first_indexed | 2024-12-10T15:43:54Z |
| format | Article |
| id | doaj.art-5cb98c2d2d8046e08bb90d0e6b51f600 |
| institution | Directory Open Access Journal |
| issn | 1392-1320 2029-7289 |
| language | English |
| last_indexed | 2024-12-10T15:43:54Z |
| publishDate | 2017-02-01 |
| publisher | Kaunas University of Technology |
| record_format | Article |
| series | Medžiagotyra |
| spelling | doaj.art-5cb98c2d2d8046e08bb90d0e6b51f6002022-12-22T01:43:02ZengKaunas University of TechnologyMedžiagotyra1392-13202029-72892017-02-01231162010.5755/j01.ms.23.1.138238348Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE SimulationGoran VUKELIC0Josip BRNIC1Faculty of Maritime Studies Rijeka, University of Rijeka, CroatiaFaculty of Engineering, University of Rijeka, Croatia<p>Optimal selection of material can be considered as one of the most critical steps in engineering design process. That is especially emphasized when dealing with constructions that operate in marine environment; high stresses and harsh operating conditions assert the importance of proper material characterization before its selection. This paper presents comparison of two types of steel usually used in marine shaft manufacturing, chromium-molybdenum steel AISI 4140 and chromium low-alloy steel AISI 5120. Comparison was made using numerically determined <em>J</em>-integral, an important fracture mechanics parameter. <em>J</em>-integral values are determined numerically using finite element (FE) stress analysis results of compact tensile (CT) and single-edge notched bend (SENB) type specimens usually used in standardized <em>J</em>-integral experimental procedures. Obtained <em>J</em> values are plotted versus specimen crack growth values (Δ<em>a</em>) for different specimen geometries (<em>a/W</em>). Higher resulting values of <em>J</em>-integral for AISI 5120 than AISI 4140 can be noticed. Also, higher <em>a/W</em> ratios correspond to lower <em>J</em>-integral values of materials and vice versa. In addition to that, <em>J</em>-integral values obtained by using FE model of CT specimen give somewhat conservative results when compared with ones obtained by FE model of SENB specimen. Although this procedure differs from experimental analysis, results can be used a suitable fracture parameter value in fracture toughness assessment.</p><p>DOI: <a href="http://dx.doi.org/10.5755/j01.ms.23.1.13823">http://dx.doi.org/10.5755/j01.ms.23.1.13823</a></p>http://matsc.ktu.lt/index.php/MatSc/article/view/13823AISI 4140, AISI 5120, marine steel, fracture |
| spellingShingle | Goran VUKELIC Josip BRNIC Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE Simulation Medžiagotyra AISI 4140, AISI 5120, marine steel, fracture |
| title | Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE Simulation |
| title_full | Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE Simulation |
| title_fullStr | Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE Simulation |
| title_full_unstemmed | Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE Simulation |
| title_short | Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE Simulation |
| title_sort | marine shaft steels aisi 4140 and aisi 5120 predicted fracture toughness by fe simulation |
| topic | AISI 4140, AISI 5120, marine steel, fracture |
| url | http://matsc.ktu.lt/index.php/MatSc/article/view/13823 |
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