The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform
Marcel Ucke - One of the best experts on this subject based on the ideXlab platform.
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load and structural health monitoring of a scaled cfrp Rudder Stock using electro mechanical impedance technique
Health Monitoring of Structural and Biological Systems XIV, 2020Co-Authors: Joche Moll, Matthias Schmid, Johannes Kasge, Jorg Mehldau, Marcel Ucke, Feli HaupAbstract:In this work, we present the design and realization of a scaled Rudder Stock sample with structural embedded strain gauges and piezoelectric transducers. While the strain gauges register the loading, the electro-mechanical impedance technique is used for the assessment of the structural conditions. The experimental data acquisition is based on a dedicated multichannel EMI device that supports high frequencies (up to 1 MHz) and high currents (up to 2A) so that highly attenuated materials such as the proposed CFRP Rudder Stock can be inspected. Experimental results will be presented for this combined load and structural health monitoring (L-SHM) system from a laboratory investigation where the Rudder Stock sample was loaded with bending and torsional loads. A damage indicator is defined in the frequency domain and used for the analysis of different structural conditions. The diagnostic content of multiple piezoelectric transducers arranged on the circumference will be evaluated and compared.
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simultaneous load and structural monitoring of a carbon fiber Rudder Stock experimental results from a quasi static tensile test
Journal of Intelligent Material Systems and Structures, 2019Co-Authors: Klaus Neuschwande, Joche Moll, Matthias Schmid, Vittorio Memmolo, Marcel UckeAbstract:Carbon-fiber-reinforced plastics are widely used in lightweight marine structures due to their high strength and superior fatigue behavior. In this article, we will present an innovative methodolog...
Klaus Neuschwande - One of the best experts on this subject based on the ideXlab platform.
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simultaneous load and structural monitoring of a carbon fiber Rudder Stock experimental results from a quasi static tensile test
Journal of Intelligent Material Systems and Structures, 2019Co-Authors: Klaus Neuschwande, Joche Moll, Matthias Schmid, Vittorio Memmolo, Marcel UckeAbstract:Carbon-fiber-reinforced plastics are widely used in lightweight marine structures due to their high strength and superior fatigue behavior. In this article, we will present an innovative methodolog...
Vittorio Memmolo - One of the best experts on this subject based on the ideXlab platform.
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simultaneous load and structural monitoring of a carbon fiber Rudder Stock experimental results from a quasi static tensile test
Journal of Intelligent Material Systems and Structures, 2019Co-Authors: Klaus Neuschwande, Joche Moll, Matthias Schmid, Vittorio Memmolo, Marcel UckeAbstract:Carbon-fiber-reinforced plastics are widely used in lightweight marine structures due to their high strength and superior fatigue behavior. In this article, we will present an innovative methodolog...
Spence, Silas Joh Yro - One of the best experts on this subject based on the ideXlab platform.
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Experimental and Numerical Study of Pre-Swirl Stators PSS
'MDPI AG', 2020Co-Authors: Kousha Kourosh, Krasilnikov Vladimi, Nataletti Marco, Sileo Lucia, Spence, Silas Joh YroAbstract:Energy saving within shipping is gaining more attention due to environmental awareness, financial incentives, and, most importantly, new regional and international rules, which limit the acceptable emission from the ships considerably. One of the measures is installation of energy saving devices (ESD). One type of such a device, known as pre-swirl stator (PSS), consists of a number (usually 3 to 5) of fins, which are mounted right in front of the propeller. By modifying the inflow and swirl into the propeller, the fins of a PSS have the possibility to increase the total propulsion efficiency. However, at the same time, they may introduce additional resistance either due to changes in pressure distribution over the aft ship or due to its own resistance of fins. In this paper, the authors present experimental and numerical investigation of a PSS for a chemical tanker. Numerical analysis of the vessel with and without PSS is performed in the model and full scale. Model testing is performed with and without PSS to verify the power savings predicted numerically. Among other quantities, 3D wake field behind the hull is densely measured at different planes, starting from the PSS plane to the Rudder Stock plane. 3D wake measurements are also conducted with a running propeller. The measurements show considerable improvement in the performance of the vessel fitted with PSS. On the numerical side, analyses show that scale effect plays an important role in the ESD performance. Investigation of the scale effect on the vessel equipped with an ESD provides new insight for the community, which is investing more into the development of energy saving devices, and it offers valuable information for the elaboration of scaling procedures for such vessels.publishedVersio
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Experimental and Numerical Study of Pre-Swirl Stators PSS
MDPI AG, 2020Co-Authors: Kousha Kourosh, Krasilnikov Vladimi, Nataletti Marco, Sileo Lucia, Spence, Silas Joh YroAbstract:Energy saving within shipping is gaining more attention due to environmental awareness, financial incentives, and, most importantly, new regional and international rules, which limit the acceptable emission from the ships considerably. One of the measures is installation of energy saving devices (ESD). One type of such a device, known as pre-swirl stator (PSS), consists of a number (usually 3 to 5) of fins, which are mounted right in front of the propeller. By modifying the inflow and swirl into the propeller, the fins of a PSS have the possibility to increase the total propulsion efficiency. However, at the same time, they may introduce additional resistance either due to changes in pressure distribution over the aft ship or due to its own resistance of fins. In this paper, the authors present experimental and numerical investigation of a PSS for a chemical tanker. Numerical analysis of the vessel with and without PSS is performed in the model and full scale. Model testing is performed with and without PSS to verify the power savings predicted numerically. Among other quantities, 3D wake field behind the hull is densely measured at different planes, starting from the PSS plane to the Rudder Stock plane. 3D wake measurements are also conducted with a running propeller. The measurements show considerable improvement in the performance of the vessel fitted with PSS. On the numerical side, analyses show that scale effect plays an important role in the ESD performance. Investigation of the scale effect on the vessel equipped with an ESD provides new insight for the community, which is investing more into the development of energy saving devices, and it offers valuable information for the elaboration of scaling procedures for such vessels
Matthias Schmid - One of the best experts on this subject based on the ideXlab platform.
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load and structural health monitoring of a scaled cfrp Rudder Stock using electro mechanical impedance technique
Health Monitoring of Structural and Biological Systems XIV, 2020Co-Authors: Joche Moll, Matthias Schmid, Johannes Kasge, Jorg Mehldau, Marcel Ucke, Feli HaupAbstract:In this work, we present the design and realization of a scaled Rudder Stock sample with structural embedded strain gauges and piezoelectric transducers. While the strain gauges register the loading, the electro-mechanical impedance technique is used for the assessment of the structural conditions. The experimental data acquisition is based on a dedicated multichannel EMI device that supports high frequencies (up to 1 MHz) and high currents (up to 2A) so that highly attenuated materials such as the proposed CFRP Rudder Stock can be inspected. Experimental results will be presented for this combined load and structural health monitoring (L-SHM) system from a laboratory investigation where the Rudder Stock sample was loaded with bending and torsional loads. A damage indicator is defined in the frequency domain and used for the analysis of different structural conditions. The diagnostic content of multiple piezoelectric transducers arranged on the circumference will be evaluated and compared.
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simultaneous load and structural monitoring of a carbon fiber Rudder Stock experimental results from a quasi static tensile test
Journal of Intelligent Material Systems and Structures, 2019Co-Authors: Klaus Neuschwande, Joche Moll, Matthias Schmid, Vittorio Memmolo, Marcel UckeAbstract:Carbon-fiber-reinforced plastics are widely used in lightweight marine structures due to their high strength and superior fatigue behavior. In this article, we will present an innovative methodolog...
