The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform
T Ozaki - One of the best experts on this subject based on the ideXlab platform.
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Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors
Structural Health Monitoring-an International Journal, 2007Co-Authors: Masataro Amano, Yoji Okabe, Nobuo Takeda, T OzakiAbstract:The authors focus on the construction of a structural health monitoring (SHM) system with an advanced grid Structure (AGS) made of carbon-fiber reinforced plastic (CFRP). AGS is often applied to aerospace Structures because the ribs carry only axial forces in the carbon fiber direction, making AGS structurally effective and lightweight, and because the repetition of many ribs in the AGS composition results in damage tolerance. The failure of a single rib hardly affects the fracture of the whole Structure, making AGS a Fail-Safe Structure. In this research, the authors have embedded multiplexed-fiber Bragg grating (FBG) sensors into an AGS rib in the longitudinal direction to measure mechanical strains of all ribs in order to detect the existence and regions of AGS rib fractures. Monitoring the change in rib-longitudinal strains is the most effective SHM system for AGS. To confirm the proposal, the authors explore the following. First, various damage characteristics under low-velocity impact loading are in...
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Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors
Structural Health Monitoring, 2007Co-Authors: Masaki Amano, Yoji Okabe, Nobuo Takeda, T OzakiAbstract:The authors focus on the construction of a structural health monitoring (SHM) system with an advanced grid Structure (AGS) made of carbon-fiber reinforced plastic (CFRP). AGS is often applied to aerospace Structures because the ribs carry only axial forces in the carbon fiber direction, making AGS structurally effective and lightweight, and because the repetition of many ribs in the AGS composition results in damage tolerance. The failure of a single rib hardly affects the fracture of the whole Structure, making AGS a Fail-Safe Structure. In this research, the authors have embedded multiplexed-fiber Bragg grating (FBG) sensors into an AGS rib in the longitudinal direction to measure mechanical strains of all ribs in order to detect the existence and regions of AGS rib fractures. Monitoring the change in rib-longitudinal strains is the most effective SHM system for AGS. To confirm the proposal, the authors explore the following. First, various damage characteristics under low-velocity impact loading are investigated and it is verified that partial rib cracks are the most typical damage in AGS. An AGS is then fabricated with embedded FBG sensors and verified that the SHM system is able to measure all rib strains. Subsequently, it is analytically determined that the change in longitudinal-rib strains is the most appropriate mechanical feature for damage detection. Moreover, a statistical outlier analysis is introduced into the SHM system for automatic damage detection. Finally, AGS is established with the SHM system and verified experimentally. Results confirm that the existence of damage and its regions in AGS can be detected with the proposed SHM system.
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Design and testing of integrated Bragg grating sensor systems for advanced grid Structure
Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 2006Co-Authors: Masataro Amano, Yoji Okabe, Nobuo Takeda, Tadahito Mizutani, T OzakiAbstract:In this research, the authors target on the construction of structural health monitoring system of Advanced Grid Structure (AGS) made of Carbon fiber reinforced plastic (CFRP). AGS has often been applied to aerospace Structures because of the following advantages: (1) Since ribs carry only axial forces, the weakness in the transverse direction of the CFRP unidirectional laminates is negligible. (2) AGS has damage tolerance because the fracture of a rib hardly affects other ribs, namely AGS is a Fail-Safe Structure. In this research, in order to detect existence and regions of rib fractures in AGS, we embedded multiplexed fiber Bragg grating (FBG) sensors into AGS in rib longitudinal directions for measurement of strains. Monitoring of the change in rib longitudinal strains is the most effective SHM system for AGS. In order to confirm our proposal, we carried out following discussions. First, we analytically revealed that the change in rib longitudinal strains was the most sensitive signal for damage detection because of AGS's structural redundancy. Then, we introduced a statistical outlier analysis technique into the SHM system for damage recognition. Finally, we established AGS with the SHM system and verified experimentally. The result of the test showed that damage existence and regions in AGS could be detected with the proposed SHM system.
Masaki Amano - One of the best experts on this subject based on the ideXlab platform.
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Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors
Structural Health Monitoring, 2007Co-Authors: Masaki Amano, Yoji Okabe, Nobuo Takeda, T OzakiAbstract:The authors focus on the construction of a structural health monitoring (SHM) system with an advanced grid Structure (AGS) made of carbon-fiber reinforced plastic (CFRP). AGS is often applied to aerospace Structures because the ribs carry only axial forces in the carbon fiber direction, making AGS structurally effective and lightweight, and because the repetition of many ribs in the AGS composition results in damage tolerance. The failure of a single rib hardly affects the fracture of the whole Structure, making AGS a Fail-Safe Structure. In this research, the authors have embedded multiplexed-fiber Bragg grating (FBG) sensors into an AGS rib in the longitudinal direction to measure mechanical strains of all ribs in order to detect the existence and regions of AGS rib fractures. Monitoring the change in rib-longitudinal strains is the most effective SHM system for AGS. To confirm the proposal, the authors explore the following. First, various damage characteristics under low-velocity impact loading are investigated and it is verified that partial rib cracks are the most typical damage in AGS. An AGS is then fabricated with embedded FBG sensors and verified that the SHM system is able to measure all rib strains. Subsequently, it is analytically determined that the change in longitudinal-rib strains is the most appropriate mechanical feature for damage detection. Moreover, a statistical outlier analysis is introduced into the SHM system for automatic damage detection. Finally, AGS is established with the SHM system and verified experimentally. Results confirm that the existence of damage and its regions in AGS can be detected with the proposed SHM system.
Nobuo Takeda - One of the best experts on this subject based on the ideXlab platform.
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Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors
Structural Health Monitoring-an International Journal, 2007Co-Authors: Masataro Amano, Yoji Okabe, Nobuo Takeda, T OzakiAbstract:The authors focus on the construction of a structural health monitoring (SHM) system with an advanced grid Structure (AGS) made of carbon-fiber reinforced plastic (CFRP). AGS is often applied to aerospace Structures because the ribs carry only axial forces in the carbon fiber direction, making AGS structurally effective and lightweight, and because the repetition of many ribs in the AGS composition results in damage tolerance. The failure of a single rib hardly affects the fracture of the whole Structure, making AGS a Fail-Safe Structure. In this research, the authors have embedded multiplexed-fiber Bragg grating (FBG) sensors into an AGS rib in the longitudinal direction to measure mechanical strains of all ribs in order to detect the existence and regions of AGS rib fractures. Monitoring the change in rib-longitudinal strains is the most effective SHM system for AGS. To confirm the proposal, the authors explore the following. First, various damage characteristics under low-velocity impact loading are in...
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Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors
Structural Health Monitoring, 2007Co-Authors: Masaki Amano, Yoji Okabe, Nobuo Takeda, T OzakiAbstract:The authors focus on the construction of a structural health monitoring (SHM) system with an advanced grid Structure (AGS) made of carbon-fiber reinforced plastic (CFRP). AGS is often applied to aerospace Structures because the ribs carry only axial forces in the carbon fiber direction, making AGS structurally effective and lightweight, and because the repetition of many ribs in the AGS composition results in damage tolerance. The failure of a single rib hardly affects the fracture of the whole Structure, making AGS a Fail-Safe Structure. In this research, the authors have embedded multiplexed-fiber Bragg grating (FBG) sensors into an AGS rib in the longitudinal direction to measure mechanical strains of all ribs in order to detect the existence and regions of AGS rib fractures. Monitoring the change in rib-longitudinal strains is the most effective SHM system for AGS. To confirm the proposal, the authors explore the following. First, various damage characteristics under low-velocity impact loading are investigated and it is verified that partial rib cracks are the most typical damage in AGS. An AGS is then fabricated with embedded FBG sensors and verified that the SHM system is able to measure all rib strains. Subsequently, it is analytically determined that the change in longitudinal-rib strains is the most appropriate mechanical feature for damage detection. Moreover, a statistical outlier analysis is introduced into the SHM system for automatic damage detection. Finally, AGS is established with the SHM system and verified experimentally. Results confirm that the existence of damage and its regions in AGS can be detected with the proposed SHM system.
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Design and testing of integrated Bragg grating sensor systems for advanced grid Structure
Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 2006Co-Authors: Masataro Amano, Yoji Okabe, Nobuo Takeda, Tadahito Mizutani, T OzakiAbstract:In this research, the authors target on the construction of structural health monitoring system of Advanced Grid Structure (AGS) made of Carbon fiber reinforced plastic (CFRP). AGS has often been applied to aerospace Structures because of the following advantages: (1) Since ribs carry only axial forces, the weakness in the transverse direction of the CFRP unidirectional laminates is negligible. (2) AGS has damage tolerance because the fracture of a rib hardly affects other ribs, namely AGS is a Fail-Safe Structure. In this research, in order to detect existence and regions of rib fractures in AGS, we embedded multiplexed fiber Bragg grating (FBG) sensors into AGS in rib longitudinal directions for measurement of strains. Monitoring of the change in rib longitudinal strains is the most effective SHM system for AGS. In order to confirm our proposal, we carried out following discussions. First, we analytically revealed that the change in rib longitudinal strains was the most sensitive signal for damage detection because of AGS's structural redundancy. Then, we introduced a statistical outlier analysis technique into the SHM system for damage recognition. Finally, we established AGS with the SHM system and verified experimentally. The result of the test showed that damage existence and regions in AGS could be detected with the proposed SHM system.
Yoji Okabe - One of the best experts on this subject based on the ideXlab platform.
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Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors
Structural Health Monitoring-an International Journal, 2007Co-Authors: Masataro Amano, Yoji Okabe, Nobuo Takeda, T OzakiAbstract:The authors focus on the construction of a structural health monitoring (SHM) system with an advanced grid Structure (AGS) made of carbon-fiber reinforced plastic (CFRP). AGS is often applied to aerospace Structures because the ribs carry only axial forces in the carbon fiber direction, making AGS structurally effective and lightweight, and because the repetition of many ribs in the AGS composition results in damage tolerance. The failure of a single rib hardly affects the fracture of the whole Structure, making AGS a Fail-Safe Structure. In this research, the authors have embedded multiplexed-fiber Bragg grating (FBG) sensors into an AGS rib in the longitudinal direction to measure mechanical strains of all ribs in order to detect the existence and regions of AGS rib fractures. Monitoring the change in rib-longitudinal strains is the most effective SHM system for AGS. To confirm the proposal, the authors explore the following. First, various damage characteristics under low-velocity impact loading are in...
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Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors
Structural Health Monitoring, 2007Co-Authors: Masaki Amano, Yoji Okabe, Nobuo Takeda, T OzakiAbstract:The authors focus on the construction of a structural health monitoring (SHM) system with an advanced grid Structure (AGS) made of carbon-fiber reinforced plastic (CFRP). AGS is often applied to aerospace Structures because the ribs carry only axial forces in the carbon fiber direction, making AGS structurally effective and lightweight, and because the repetition of many ribs in the AGS composition results in damage tolerance. The failure of a single rib hardly affects the fracture of the whole Structure, making AGS a Fail-Safe Structure. In this research, the authors have embedded multiplexed-fiber Bragg grating (FBG) sensors into an AGS rib in the longitudinal direction to measure mechanical strains of all ribs in order to detect the existence and regions of AGS rib fractures. Monitoring the change in rib-longitudinal strains is the most effective SHM system for AGS. To confirm the proposal, the authors explore the following. First, various damage characteristics under low-velocity impact loading are investigated and it is verified that partial rib cracks are the most typical damage in AGS. An AGS is then fabricated with embedded FBG sensors and verified that the SHM system is able to measure all rib strains. Subsequently, it is analytically determined that the change in longitudinal-rib strains is the most appropriate mechanical feature for damage detection. Moreover, a statistical outlier analysis is introduced into the SHM system for automatic damage detection. Finally, AGS is established with the SHM system and verified experimentally. Results confirm that the existence of damage and its regions in AGS can be detected with the proposed SHM system.
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Design and testing of integrated Bragg grating sensor systems for advanced grid Structure
Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 2006Co-Authors: Masataro Amano, Yoji Okabe, Nobuo Takeda, Tadahito Mizutani, T OzakiAbstract:In this research, the authors target on the construction of structural health monitoring system of Advanced Grid Structure (AGS) made of Carbon fiber reinforced plastic (CFRP). AGS has often been applied to aerospace Structures because of the following advantages: (1) Since ribs carry only axial forces, the weakness in the transverse direction of the CFRP unidirectional laminates is negligible. (2) AGS has damage tolerance because the fracture of a rib hardly affects other ribs, namely AGS is a Fail-Safe Structure. In this research, in order to detect existence and regions of rib fractures in AGS, we embedded multiplexed fiber Bragg grating (FBG) sensors into AGS in rib longitudinal directions for measurement of strains. Monitoring of the change in rib longitudinal strains is the most effective SHM system for AGS. In order to confirm our proposal, we carried out following discussions. First, we analytically revealed that the change in rib longitudinal strains was the most sensitive signal for damage detection because of AGS's structural redundancy. Then, we introduced a statistical outlier analysis technique into the SHM system for damage recognition. Finally, we established AGS with the SHM system and verified experimentally. The result of the test showed that damage existence and regions in AGS could be detected with the proposed SHM system.
Masataro Amano - One of the best experts on this subject based on the ideXlab platform.
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Structural Health Monitoring of an Advanced Grid Structure with Embedded Fiber Bragg Grating Sensors
Structural Health Monitoring-an International Journal, 2007Co-Authors: Masataro Amano, Yoji Okabe, Nobuo Takeda, T OzakiAbstract:The authors focus on the construction of a structural health monitoring (SHM) system with an advanced grid Structure (AGS) made of carbon-fiber reinforced plastic (CFRP). AGS is often applied to aerospace Structures because the ribs carry only axial forces in the carbon fiber direction, making AGS structurally effective and lightweight, and because the repetition of many ribs in the AGS composition results in damage tolerance. The failure of a single rib hardly affects the fracture of the whole Structure, making AGS a Fail-Safe Structure. In this research, the authors have embedded multiplexed-fiber Bragg grating (FBG) sensors into an AGS rib in the longitudinal direction to measure mechanical strains of all ribs in order to detect the existence and regions of AGS rib fractures. Monitoring the change in rib-longitudinal strains is the most effective SHM system for AGS. To confirm the proposal, the authors explore the following. First, various damage characteristics under low-velocity impact loading are in...
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Design and testing of integrated Bragg grating sensor systems for advanced grid Structure
Smart Structures and Materials 2006: Smart Structures and Integrated Systems, 2006Co-Authors: Masataro Amano, Yoji Okabe, Nobuo Takeda, Tadahito Mizutani, T OzakiAbstract:In this research, the authors target on the construction of structural health monitoring system of Advanced Grid Structure (AGS) made of Carbon fiber reinforced plastic (CFRP). AGS has often been applied to aerospace Structures because of the following advantages: (1) Since ribs carry only axial forces, the weakness in the transverse direction of the CFRP unidirectional laminates is negligible. (2) AGS has damage tolerance because the fracture of a rib hardly affects other ribs, namely AGS is a Fail-Safe Structure. In this research, in order to detect existence and regions of rib fractures in AGS, we embedded multiplexed fiber Bragg grating (FBG) sensors into AGS in rib longitudinal directions for measurement of strains. Monitoring of the change in rib longitudinal strains is the most effective SHM system for AGS. In order to confirm our proposal, we carried out following discussions. First, we analytically revealed that the change in rib longitudinal strains was the most sensitive signal for damage detection because of AGS's structural redundancy. Then, we introduced a statistical outlier analysis technique into the SHM system for damage recognition. Finally, we established AGS with the SHM system and verified experimentally. The result of the test showed that damage existence and regions in AGS could be detected with the proposed SHM system.
