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Salvatore Luciano Cosentino - One of the best experts on this subject based on the ideXlab platform.

  • biomass yield and Energy balance of three perennial crops for Energy use in the semi arid mediterranean environment
    Field Crops Research, 2009
    Co-Authors: M Mantineo, G M Dagosta, Venera Copani, Cristina Patane, Salvatore Luciano Cosentino
    Abstract:

    Abstract Three different lignocellulosic Energy crops (a local clone of Arundo donax L., Miscanthus x giganteus Greef et Deu. and Cynara cardunculus L. var. altilis D.C. cv. “Cardo gigante inerme”) were compared over 5 years (2002–2007) for crop yield, net Energy yield and Energy ratio. In a hilly interior area of Sicily (Italy), two different irrigation treatments (75 and 25% of ETm restoration) and two nitrogen fertilization levels (100 and 50 kg ha −1 ) were evaluated in a split-plot experiment. In the fourth and fifth years of the field experiment (2005–2007) no fertilizer or irrigation was used. From crop establishment to the third year, above ground dry matter yield increased over all studied factors, in A. donax from 6.1 to 38.8 t ha −1 and in M. x giganteus from 2.5 to 26.9 t ha −1 . Fifteen months after sowing, C. cardunculus yielded 24.7 t ha −1 of d.m. decreasing to 8.0 t ha −1 in the third year. In the fourth and fifth years, above ground dry matter yields of all crops decreased, but A. donax and M. x giganteus still maintained high productivity levels in both years. By contrast the yield of C. cardunculus yield fell to less than 1 t ha −1 of d.m. by the fourth year. Energy inputs of A. donax and M. x giganteus were higher in the year of establishment than that of C. cardunculus (34 GJ ha −1 for A. donax and M. x giganteus and 12 GJ ha −1 for C. cardunculus ), mainly due to irrigation. Net Energy yield showed low or negative values in the establishment year in A. donax and M. x giganteus . In the second and third year, net Energy yield of A. donax was exceptionally high (487.2 and 611.5 GJ ha −1 , respectively), whilst M x giganteus had lower values (232.2 and 425.9 GJ ha −1 , respectively). M x giganteus attained its highest net Energy yield in the fourth year (447.2 GJ ha −1 ). Net Energy yield of C. cardunculus Reflected Energy output of the crop, being high in the first compared to subsequent years (364.7, 277.0 and 119.2 GJ ha −1 , respectively for the first, second and third years). A significant effect of the different irrigation treatments was noted on all the studied parameters in all species. Conversely, only A. donax was affected by nitrogen fertilization.

  • biomass yield and Energy balance of three perennial crops for Energy use in the semi arid mediterranean environment
    Field Crops Research, 2009
    Co-Authors: M Mantineo, G M Dagosta, Venera Copani, Cristina Patane, Salvatore Luciano Cosentino
    Abstract:

    Abstract Three different lignocellulosic Energy crops (a local clone of Arundo donax L., Miscanthus x giganteus Greef et Deu. and Cynara cardunculus L. var. altilis D.C. cv. “Cardo gigante inerme”) were compared over 5 years (2002–2007) for crop yield, net Energy yield and Energy ratio. In a hilly interior area of Sicily (Italy), two different irrigation treatments (75 and 25% of ETm restoration) and two nitrogen fertilization levels (100 and 50 kg ha −1 ) were evaluated in a split-plot experiment. In the fourth and fifth years of the field experiment (2005–2007) no fertilizer or irrigation was used. From crop establishment to the third year, above ground dry matter yield increased over all studied factors, in A. donax from 6.1 to 38.8 t ha −1 and in M. x giganteus from 2.5 to 26.9 t ha −1 . Fifteen months after sowing, C. cardunculus yielded 24.7 t ha −1 of d.m. decreasing to 8.0 t ha −1 in the third year. In the fourth and fifth years, above ground dry matter yields of all crops decreased, but A. donax and M. x giganteus still maintained high productivity levels in both years. By contrast the yield of C. cardunculus yield fell to less than 1 t ha −1 of d.m. by the fourth year. Energy inputs of A. donax and M. x giganteus were higher in the year of establishment than that of C. cardunculus (34 GJ ha −1 for A. donax and M. x giganteus and 12 GJ ha −1 for C. cardunculus ), mainly due to irrigation. Net Energy yield showed low or negative values in the establishment year in A. donax and M. x giganteus . In the second and third year, net Energy yield of A. donax was exceptionally high (487.2 and 611.5 GJ ha −1 , respectively), whilst M x giganteus had lower values (232.2 and 425.9 GJ ha −1 , respectively). M x giganteus attained its highest net Energy yield in the fourth year (447.2 GJ ha −1 ). Net Energy yield of C. cardunculus Reflected Energy output of the crop, being high in the first compared to subsequent years (364.7, 277.0 and 119.2 GJ ha −1 , respectively for the first, second and third years). A significant effect of the different irrigation treatments was noted on all the studied parameters in all species. Conversely, only A. donax was affected by nitrogen fertilization.

Patrice Masson - One of the best experts on this subject based on the ideXlab platform.

  • correlation based imaging technique for fatigue monitoring of riveted lap joint structure
    Smart Materials and Structures, 2014
    Co-Authors: Nicolas Quaegebeur, Pierreclaude Ostiguy, Patrice Masson
    Abstract:

    In the present study, a correlation-based imaging technique called Excitelet is assessed to monitor fatigue crack propagation in a riveted aluminum lap-joint, representative of an aircraft component. For this purpose, a micro-machined piezoceramic array is used to generate guided waves into the structure and measure the reflections induced by potential damage. The method uses a propagation model to correlate measured signals with a bank of signals and imaging is performed using a round-robin procedure (full-matrix capture). This allows taking into account the transducer dynamics and finite dimensions, multi-modal and dispersive characteristics of the guided wave propagation and complex interaction between with damage. Experimental validation has been conducted on an aluminum lap-joint instrumented with a compact linear piezoceramic array of 8 circular elements of 3 mm diameter each. The imaging technique is applied to detect crack propagation after fatigue cycling. Imaging results obtained using A0 mode at 300 and 450 kHz are presented for different crack sizes. It is demonstrated that crack detection and localization can be achieved, while the correlation level indicates the level of Reflected Energy, and thus damage severity. An accuracy below 5 mm on damage location can be achieved, demonstrating the potential of the correlation-based imaging technique for damage monitoring of complex aerospace structures.

  • correlation based imaging technique for fatigue monitoring of riveted lap joint structure
    Smart Materials and Structures, 2014
    Co-Authors: Nicolas Quaegebeur, Pierreclaude Ostiguy, Patrice Masson
    Abstract:

    In the present study, a correlation-based imaging technique called Excitelet is assessed to monitor fatigue crack propagation in a riveted aluminum lap-joint, representative of an aircraft component. For this purpose, a micro-machined piezoceramic array is used to generate guided waves into the structure and measure the reflections induced by potential damage. The method uses a propagation model to correlate measured signals with a bank of signals and imaging is performed using a round-robin procedure (full-matrix capture). This allows taking into account the transducer dynamics and finite dimensions, multi-modal and dispersive characteristics of the guided wave propagation and complex interaction between with damage. Experimental validation has been conducted on an aluminum lap-joint instrumented with a compact linear piezoceramic array of 8 circular elements of 3 mm diameter each. The imaging technique is applied to detect crack propagation after fatigue cycling. Imaging results obtained using A0 mode at 300 and 450 kHz are presented for different crack sizes. It is demonstrated that crack detection and localization can be achieved, while the correlation level indicates the level of Reflected Energy, and thus damage severity. An accuracy below 5 mm on damage location can be achieved, demonstrating the potential of the correlation-based imaging technique for damage monitoring of complex aerospace structures.

M Mantineo - One of the best experts on this subject based on the ideXlab platform.

  • biomass yield and Energy balance of three perennial crops for Energy use in the semi arid mediterranean environment
    Field Crops Research, 2009
    Co-Authors: M Mantineo, G M Dagosta, Venera Copani, Cristina Patane, Salvatore Luciano Cosentino
    Abstract:

    Abstract Three different lignocellulosic Energy crops (a local clone of Arundo donax L., Miscanthus x giganteus Greef et Deu. and Cynara cardunculus L. var. altilis D.C. cv. “Cardo gigante inerme”) were compared over 5 years (2002–2007) for crop yield, net Energy yield and Energy ratio. In a hilly interior area of Sicily (Italy), two different irrigation treatments (75 and 25% of ETm restoration) and two nitrogen fertilization levels (100 and 50 kg ha −1 ) were evaluated in a split-plot experiment. In the fourth and fifth years of the field experiment (2005–2007) no fertilizer or irrigation was used. From crop establishment to the third year, above ground dry matter yield increased over all studied factors, in A. donax from 6.1 to 38.8 t ha −1 and in M. x giganteus from 2.5 to 26.9 t ha −1 . Fifteen months after sowing, C. cardunculus yielded 24.7 t ha −1 of d.m. decreasing to 8.0 t ha −1 in the third year. In the fourth and fifth years, above ground dry matter yields of all crops decreased, but A. donax and M. x giganteus still maintained high productivity levels in both years. By contrast the yield of C. cardunculus yield fell to less than 1 t ha −1 of d.m. by the fourth year. Energy inputs of A. donax and M. x giganteus were higher in the year of establishment than that of C. cardunculus (34 GJ ha −1 for A. donax and M. x giganteus and 12 GJ ha −1 for C. cardunculus ), mainly due to irrigation. Net Energy yield showed low or negative values in the establishment year in A. donax and M. x giganteus . In the second and third year, net Energy yield of A. donax was exceptionally high (487.2 and 611.5 GJ ha −1 , respectively), whilst M x giganteus had lower values (232.2 and 425.9 GJ ha −1 , respectively). M x giganteus attained its highest net Energy yield in the fourth year (447.2 GJ ha −1 ). Net Energy yield of C. cardunculus Reflected Energy output of the crop, being high in the first compared to subsequent years (364.7, 277.0 and 119.2 GJ ha −1 , respectively for the first, second and third years). A significant effect of the different irrigation treatments was noted on all the studied parameters in all species. Conversely, only A. donax was affected by nitrogen fertilization.

  • biomass yield and Energy balance of three perennial crops for Energy use in the semi arid mediterranean environment
    Field Crops Research, 2009
    Co-Authors: M Mantineo, G M Dagosta, Venera Copani, Cristina Patane, Salvatore Luciano Cosentino
    Abstract:

    Abstract Three different lignocellulosic Energy crops (a local clone of Arundo donax L., Miscanthus x giganteus Greef et Deu. and Cynara cardunculus L. var. altilis D.C. cv. “Cardo gigante inerme”) were compared over 5 years (2002–2007) for crop yield, net Energy yield and Energy ratio. In a hilly interior area of Sicily (Italy), two different irrigation treatments (75 and 25% of ETm restoration) and two nitrogen fertilization levels (100 and 50 kg ha −1 ) were evaluated in a split-plot experiment. In the fourth and fifth years of the field experiment (2005–2007) no fertilizer or irrigation was used. From crop establishment to the third year, above ground dry matter yield increased over all studied factors, in A. donax from 6.1 to 38.8 t ha −1 and in M. x giganteus from 2.5 to 26.9 t ha −1 . Fifteen months after sowing, C. cardunculus yielded 24.7 t ha −1 of d.m. decreasing to 8.0 t ha −1 in the third year. In the fourth and fifth years, above ground dry matter yields of all crops decreased, but A. donax and M. x giganteus still maintained high productivity levels in both years. By contrast the yield of C. cardunculus yield fell to less than 1 t ha −1 of d.m. by the fourth year. Energy inputs of A. donax and M. x giganteus were higher in the year of establishment than that of C. cardunculus (34 GJ ha −1 for A. donax and M. x giganteus and 12 GJ ha −1 for C. cardunculus ), mainly due to irrigation. Net Energy yield showed low or negative values in the establishment year in A. donax and M. x giganteus . In the second and third year, net Energy yield of A. donax was exceptionally high (487.2 and 611.5 GJ ha −1 , respectively), whilst M x giganteus had lower values (232.2 and 425.9 GJ ha −1 , respectively). M x giganteus attained its highest net Energy yield in the fourth year (447.2 GJ ha −1 ). Net Energy yield of C. cardunculus Reflected Energy output of the crop, being high in the first compared to subsequent years (364.7, 277.0 and 119.2 GJ ha −1 , respectively for the first, second and third years). A significant effect of the different irrigation treatments was noted on all the studied parameters in all species. Conversely, only A. donax was affected by nitrogen fertilization.

Nicolas Quaegebeur - One of the best experts on this subject based on the ideXlab platform.

  • correlation based imaging technique for fatigue monitoring of riveted lap joint structure
    Smart Materials and Structures, 2014
    Co-Authors: Nicolas Quaegebeur, Pierreclaude Ostiguy, Patrice Masson
    Abstract:

    In the present study, a correlation-based imaging technique called Excitelet is assessed to monitor fatigue crack propagation in a riveted aluminum lap-joint, representative of an aircraft component. For this purpose, a micro-machined piezoceramic array is used to generate guided waves into the structure and measure the reflections induced by potential damage. The method uses a propagation model to correlate measured signals with a bank of signals and imaging is performed using a round-robin procedure (full-matrix capture). This allows taking into account the transducer dynamics and finite dimensions, multi-modal and dispersive characteristics of the guided wave propagation and complex interaction between with damage. Experimental validation has been conducted on an aluminum lap-joint instrumented with a compact linear piezoceramic array of 8 circular elements of 3 mm diameter each. The imaging technique is applied to detect crack propagation after fatigue cycling. Imaging results obtained using A0 mode at 300 and 450 kHz are presented for different crack sizes. It is demonstrated that crack detection and localization can be achieved, while the correlation level indicates the level of Reflected Energy, and thus damage severity. An accuracy below 5 mm on damage location can be achieved, demonstrating the potential of the correlation-based imaging technique for damage monitoring of complex aerospace structures.

  • correlation based imaging technique for fatigue monitoring of riveted lap joint structure
    Smart Materials and Structures, 2014
    Co-Authors: Nicolas Quaegebeur, Pierreclaude Ostiguy, Patrice Masson
    Abstract:

    In the present study, a correlation-based imaging technique called Excitelet is assessed to monitor fatigue crack propagation in a riveted aluminum lap-joint, representative of an aircraft component. For this purpose, a micro-machined piezoceramic array is used to generate guided waves into the structure and measure the reflections induced by potential damage. The method uses a propagation model to correlate measured signals with a bank of signals and imaging is performed using a round-robin procedure (full-matrix capture). This allows taking into account the transducer dynamics and finite dimensions, multi-modal and dispersive characteristics of the guided wave propagation and complex interaction between with damage. Experimental validation has been conducted on an aluminum lap-joint instrumented with a compact linear piezoceramic array of 8 circular elements of 3 mm diameter each. The imaging technique is applied to detect crack propagation after fatigue cycling. Imaging results obtained using A0 mode at 300 and 450 kHz are presented for different crack sizes. It is demonstrated that crack detection and localization can be achieved, while the correlation level indicates the level of Reflected Energy, and thus damage severity. An accuracy below 5 mm on damage location can be achieved, demonstrating the potential of the correlation-based imaging technique for damage monitoring of complex aerospace structures.

Cristina Patane - One of the best experts on this subject based on the ideXlab platform.

  • biomass yield and Energy balance of three perennial crops for Energy use in the semi arid mediterranean environment
    Field Crops Research, 2009
    Co-Authors: M Mantineo, G M Dagosta, Venera Copani, Cristina Patane, Salvatore Luciano Cosentino
    Abstract:

    Abstract Three different lignocellulosic Energy crops (a local clone of Arundo donax L., Miscanthus x giganteus Greef et Deu. and Cynara cardunculus L. var. altilis D.C. cv. “Cardo gigante inerme”) were compared over 5 years (2002–2007) for crop yield, net Energy yield and Energy ratio. In a hilly interior area of Sicily (Italy), two different irrigation treatments (75 and 25% of ETm restoration) and two nitrogen fertilization levels (100 and 50 kg ha −1 ) were evaluated in a split-plot experiment. In the fourth and fifth years of the field experiment (2005–2007) no fertilizer or irrigation was used. From crop establishment to the third year, above ground dry matter yield increased over all studied factors, in A. donax from 6.1 to 38.8 t ha −1 and in M. x giganteus from 2.5 to 26.9 t ha −1 . Fifteen months after sowing, C. cardunculus yielded 24.7 t ha −1 of d.m. decreasing to 8.0 t ha −1 in the third year. In the fourth and fifth years, above ground dry matter yields of all crops decreased, but A. donax and M. x giganteus still maintained high productivity levels in both years. By contrast the yield of C. cardunculus yield fell to less than 1 t ha −1 of d.m. by the fourth year. Energy inputs of A. donax and M. x giganteus were higher in the year of establishment than that of C. cardunculus (34 GJ ha −1 for A. donax and M. x giganteus and 12 GJ ha −1 for C. cardunculus ), mainly due to irrigation. Net Energy yield showed low or negative values in the establishment year in A. donax and M. x giganteus . In the second and third year, net Energy yield of A. donax was exceptionally high (487.2 and 611.5 GJ ha −1 , respectively), whilst M x giganteus had lower values (232.2 and 425.9 GJ ha −1 , respectively). M x giganteus attained its highest net Energy yield in the fourth year (447.2 GJ ha −1 ). Net Energy yield of C. cardunculus Reflected Energy output of the crop, being high in the first compared to subsequent years (364.7, 277.0 and 119.2 GJ ha −1 , respectively for the first, second and third years). A significant effect of the different irrigation treatments was noted on all the studied parameters in all species. Conversely, only A. donax was affected by nitrogen fertilization.

  • biomass yield and Energy balance of three perennial crops for Energy use in the semi arid mediterranean environment
    Field Crops Research, 2009
    Co-Authors: M Mantineo, G M Dagosta, Venera Copani, Cristina Patane, Salvatore Luciano Cosentino
    Abstract:

    Abstract Three different lignocellulosic Energy crops (a local clone of Arundo donax L., Miscanthus x giganteus Greef et Deu. and Cynara cardunculus L. var. altilis D.C. cv. “Cardo gigante inerme”) were compared over 5 years (2002–2007) for crop yield, net Energy yield and Energy ratio. In a hilly interior area of Sicily (Italy), two different irrigation treatments (75 and 25% of ETm restoration) and two nitrogen fertilization levels (100 and 50 kg ha −1 ) were evaluated in a split-plot experiment. In the fourth and fifth years of the field experiment (2005–2007) no fertilizer or irrigation was used. From crop establishment to the third year, above ground dry matter yield increased over all studied factors, in A. donax from 6.1 to 38.8 t ha −1 and in M. x giganteus from 2.5 to 26.9 t ha −1 . Fifteen months after sowing, C. cardunculus yielded 24.7 t ha −1 of d.m. decreasing to 8.0 t ha −1 in the third year. In the fourth and fifth years, above ground dry matter yields of all crops decreased, but A. donax and M. x giganteus still maintained high productivity levels in both years. By contrast the yield of C. cardunculus yield fell to less than 1 t ha −1 of d.m. by the fourth year. Energy inputs of A. donax and M. x giganteus were higher in the year of establishment than that of C. cardunculus (34 GJ ha −1 for A. donax and M. x giganteus and 12 GJ ha −1 for C. cardunculus ), mainly due to irrigation. Net Energy yield showed low or negative values in the establishment year in A. donax and M. x giganteus . In the second and third year, net Energy yield of A. donax was exceptionally high (487.2 and 611.5 GJ ha −1 , respectively), whilst M x giganteus had lower values (232.2 and 425.9 GJ ha −1 , respectively). M x giganteus attained its highest net Energy yield in the fourth year (447.2 GJ ha −1 ). Net Energy yield of C. cardunculus Reflected Energy output of the crop, being high in the first compared to subsequent years (364.7, 277.0 and 119.2 GJ ha −1 , respectively for the first, second and third years). A significant effect of the different irrigation treatments was noted on all the studied parameters in all species. Conversely, only A. donax was affected by nitrogen fertilization.