Modal moment index for damage detection in beam structures
Summary Health monitoring and damage detection in structures such as airframes are crucial to their safety and performance. Damage-induced changes in natural frequencies, damping ratios and mode shapes can be detected using experimental modal analysis (EMA), which has recently enjoyed intense resear...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Nicholson, D. W. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2000 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag 2000 |
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| Übergeordnetes Werk: |
Enthalten in: Acta mechanica - Springer-Verlag, 1965, 144(2000), 3-4 vom: Sept., Seite 155-167 |
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| Übergeordnetes Werk: |
volume:144 ; year:2000 ; number:3-4 ; month:09 ; pages:155-167 |
| Links: |
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| DOI / URN: |
10.1007/BF01170172 |
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| Katalog-ID: |
OLC2030122572 |
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| 520 | |a Summary Health monitoring and damage detection in structures such as airframes are crucial to their safety and performance. Damage-induced changes in natural frequencies, damping ratios and mode shapes can be detected using experimental modal analysis (EMA), which has recently enjoyed intense research for application in structural health monitoring. A main theme of the current research has been to formulate a parameter, calculated using the measured changes in eigenparameters, which exhibits a significant “jump” at the damage location and whose value is a direct measure of the severity of the damage. A damage-sensitive parameter thus serves to localize the damage and to assess its severity, and it should likewise minimize the likelihood of false indications or of missing damage. Here, using finite element analysis of the damaged cantilevered beam, we study several existing parameters and introduce a new parameter called the Modal Moment Index (MMI). MMI is shown to jump sharply at the damage site and to have a direct relationship to the damage level. | ||
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10.1007/BF01170172 doi (DE-627)OLC2030122572 (DE-He213)BF01170172-p DE-627 ger DE-627 rakwb eng 530 VZ Nicholson, D. W. verfasserin aut Modal moment index for damage detection in beam structures 2000 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2000 Summary Health monitoring and damage detection in structures such as airframes are crucial to their safety and performance. Damage-induced changes in natural frequencies, damping ratios and mode shapes can be detected using experimental modal analysis (EMA), which has recently enjoyed intense research for application in structural health monitoring. A main theme of the current research has been to formulate a parameter, calculated using the measured changes in eigenparameters, which exhibits a significant “jump” at the damage location and whose value is a direct measure of the severity of the damage. A damage-sensitive parameter thus serves to localize the damage and to assess its severity, and it should likewise minimize the likelihood of false indications or of missing damage. Here, using finite element analysis of the damaged cantilevered beam, we study several existing parameters and introduce a new parameter called the Modal Moment Index (MMI). MMI is shown to jump sharply at the damage site and to have a direct relationship to the damage level. Fluid Dynamics Direct Measure Finite Element Analysis Direct Relationship Mode Shape Alnefaie, K. A. aut Enthalten in Acta mechanica Springer-Verlag, 1965 144(2000), 3-4 vom: Sept., Seite 155-167 (DE-627)129511676 (DE-600)210328-X (DE-576)014919141 0001-5970 nnns volume:144 year:2000 number:3-4 month:09 pages:155-167 https://doi.org/10.1007/BF01170172 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_59 GBV_ILN_62 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2020 GBV_ILN_2027 GBV_ILN_2129 GBV_ILN_2409 GBV_ILN_4046 GBV_ILN_4313 GBV_ILN_4316 GBV_ILN_4323 GBV_ILN_4700 AR 144 2000 3-4 09 155-167 |
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10.1007/BF01170172 doi (DE-627)OLC2030122572 (DE-He213)BF01170172-p DE-627 ger DE-627 rakwb eng 530 VZ Nicholson, D. W. verfasserin aut Modal moment index for damage detection in beam structures 2000 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2000 Summary Health monitoring and damage detection in structures such as airframes are crucial to their safety and performance. Damage-induced changes in natural frequencies, damping ratios and mode shapes can be detected using experimental modal analysis (EMA), which has recently enjoyed intense research for application in structural health monitoring. A main theme of the current research has been to formulate a parameter, calculated using the measured changes in eigenparameters, which exhibits a significant “jump” at the damage location and whose value is a direct measure of the severity of the damage. A damage-sensitive parameter thus serves to localize the damage and to assess its severity, and it should likewise minimize the likelihood of false indications or of missing damage. Here, using finite element analysis of the damaged cantilevered beam, we study several existing parameters and introduce a new parameter called the Modal Moment Index (MMI). MMI is shown to jump sharply at the damage site and to have a direct relationship to the damage level. Fluid Dynamics Direct Measure Finite Element Analysis Direct Relationship Mode Shape Alnefaie, K. A. aut Enthalten in Acta mechanica Springer-Verlag, 1965 144(2000), 3-4 vom: Sept., Seite 155-167 (DE-627)129511676 (DE-600)210328-X (DE-576)014919141 0001-5970 nnns volume:144 year:2000 number:3-4 month:09 pages:155-167 https://doi.org/10.1007/BF01170172 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_11 GBV_ILN_21 GBV_ILN_22 GBV_ILN_40 GBV_ILN_59 GBV_ILN_62 GBV_ILN_70 GBV_ILN_2006 GBV_ILN_2020 GBV_ILN_2027 GBV_ILN_2129 GBV_ILN_2409 GBV_ILN_4046 GBV_ILN_4313 GBV_ILN_4316 GBV_ILN_4323 GBV_ILN_4700 AR 144 2000 3-4 09 155-167 |
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Nicholson, D. W. |
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10.1007/BF01170172 |
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modal moment index for damage detection in beam structures |
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Modal moment index for damage detection in beam structures |
| abstract |
Summary Health monitoring and damage detection in structures such as airframes are crucial to their safety and performance. Damage-induced changes in natural frequencies, damping ratios and mode shapes can be detected using experimental modal analysis (EMA), which has recently enjoyed intense research for application in structural health monitoring. A main theme of the current research has been to formulate a parameter, calculated using the measured changes in eigenparameters, which exhibits a significant “jump” at the damage location and whose value is a direct measure of the severity of the damage. A damage-sensitive parameter thus serves to localize the damage and to assess its severity, and it should likewise minimize the likelihood of false indications or of missing damage. Here, using finite element analysis of the damaged cantilevered beam, we study several existing parameters and introduce a new parameter called the Modal Moment Index (MMI). MMI is shown to jump sharply at the damage site and to have a direct relationship to the damage level. © Springer-Verlag 2000 |
| abstractGer |
Summary Health monitoring and damage detection in structures such as airframes are crucial to their safety and performance. Damage-induced changes in natural frequencies, damping ratios and mode shapes can be detected using experimental modal analysis (EMA), which has recently enjoyed intense research for application in structural health monitoring. A main theme of the current research has been to formulate a parameter, calculated using the measured changes in eigenparameters, which exhibits a significant “jump” at the damage location and whose value is a direct measure of the severity of the damage. A damage-sensitive parameter thus serves to localize the damage and to assess its severity, and it should likewise minimize the likelihood of false indications or of missing damage. Here, using finite element analysis of the damaged cantilevered beam, we study several existing parameters and introduce a new parameter called the Modal Moment Index (MMI). MMI is shown to jump sharply at the damage site and to have a direct relationship to the damage level. © Springer-Verlag 2000 |
| abstract_unstemmed |
Summary Health monitoring and damage detection in structures such as airframes are crucial to their safety and performance. Damage-induced changes in natural frequencies, damping ratios and mode shapes can be detected using experimental modal analysis (EMA), which has recently enjoyed intense research for application in structural health monitoring. A main theme of the current research has been to formulate a parameter, calculated using the measured changes in eigenparameters, which exhibits a significant “jump” at the damage location and whose value is a direct measure of the severity of the damage. A damage-sensitive parameter thus serves to localize the damage and to assess its severity, and it should likewise minimize the likelihood of false indications or of missing damage. Here, using finite element analysis of the damaged cantilevered beam, we study several existing parameters and introduce a new parameter called the Modal Moment Index (MMI). MMI is shown to jump sharply at the damage site and to have a direct relationship to the damage level. © Springer-Verlag 2000 |
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| title_short |
Modal moment index for damage detection in beam structures |
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Alnefaie, K. A. |
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