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 |
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Gruppo Italiano Frattura
2017-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_40.pdf |
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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-889da384e84a425b86f379056529cd91 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2017-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-889da384e84a425b86f379056529cd912025-02-03T00:45:59ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932017-07-01114129930610.3221/IGF-ESIS.41.4The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimensG. Meneghetti0M. Ricotta 1University of Padova, Italy University of Padova, Italy 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.http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_40.pdfFracture 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 | http://www.gruppofrattura.it/pdf/rivista/numero41/numero_41_art_40.pdf |
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