The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens
Metallic materials dissipate thermal energy when subjected to fatigue. Some of them, due a favorable combination of thermo-physical material properties, exhibit a significant temperature rise, which can be easily measured in-situ by means of thermocouples or infrared cameras. The heat energy dissipa...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2017-06-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://212.237.37.202/index.php/fis/article/view/1895 |
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| author | G. Meneghetti M. Ricotta |
| author_facet | G. Meneghetti M. Ricotta |
| author_sort | G. Meneghetti |
| collection | DOAJ |
| description | Metallic materials dissipate thermal energy when subjected to fatigue. Some of them, due a favorable combination of thermo-physical material properties, exhibit a significant temperature rise, which can be easily measured in-situ by means of thermocouples or infrared cameras. The heat energy dissipated in a unit volume of material per cycle (the Q parameter) has proven to be effective as a fatigue damage index in case of AISI 304L plain and notched specimens. Originally conceived and applied as a point-related quantity, recently Q has been averaged at the tip of propagating fatigue cracks (the Q* parameter) in order to correlate crack growth data gathered from fracture mechanics tests. The use of Q* seems interesting because (i) it can be evaluated in-situ from infrared temperature maps and (ii) crack acceleration due to excessive plasticity is likely to be accounted for. |
| format | Article |
| id | doaj-art-c4cca992faad42db9ca63e65e44cf0e3 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2017-06-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-c4cca992faad42db9ca63e65e44cf0e32025-01-02T23:01:28ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932017-06-011141The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimensG. MeneghettiM. RicottaMetallic materials dissipate thermal energy when subjected to fatigue. Some of them, due a favorable combination of thermo-physical material properties, exhibit a significant temperature rise, which can be easily measured in-situ by means of thermocouples or infrared cameras. The heat energy dissipated in a unit volume of material per cycle (the Q parameter) has proven to be effective as a fatigue damage index in case of AISI 304L plain and notched specimens. Originally conceived and applied as a point-related quantity, recently Q has been averaged at the tip of propagating fatigue cracks (the Q* parameter) in order to correlate crack growth data gathered from fracture mechanics tests. The use of Q* seems interesting because (i) it can be evaluated in-situ from infrared temperature maps and (ii) crack acceleration due to excessive plasticity is likely to be accounted for.https://212.237.37.202/index.php/fis/article/view/1895Fracture MechanicsCrack tip plasticityEnergy methodsFatigueTemperature |
| spellingShingle | G. Meneghetti M. Ricotta The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens Fracture and Structural Integrity Fracture Mechanics Crack tip plasticity Energy methods Fatigue Temperature |
| title | The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens |
| title_full | The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens |
| title_fullStr | The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens |
| title_full_unstemmed | The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens |
| title_short | The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens |
| title_sort | heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens |
| topic | Fracture Mechanics Crack tip plasticity Energy methods Fatigue Temperature |
| url | https://212.237.37.202/index.php/fis/article/view/1895 |
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