Abstract: A testing device for a model of a floating gate, the device including: a towing carriage including a platform and a moon pool; a square support mechanism including two upper transversal beams, two upper longitudinal beams, two I-shaped longitudinal beams, four lower beams, and straight plates disposed on two of the four lower beams; a dynamometric mechanism including a longitudinal tensiometer, a transversal tensiometer, and a signal transmitting terminal; a data acquisition mechanism including a computer and a signal receiving terminal; a casing mechanism including two stepped shafts and two rolling wheels; and a guide rod mechanism including an inner sleeve, an outer sleeve, and a connecting plate. One end of the connecting plate is connected to the lower end of the inner sleeve, and the other end thereof is connected to a deck of the floating gate.

Abstract: A floating and mobile carrying platform device, including: a load-bearing deck trunk including an upper surface and a lower surface; a semi-submersible tower disposed on the upper surface of the load-bearing deck trunk; a column-type buoyancy pier connected to the lower surface of the load-bearing deck trunk; rest piers disposed on the upper surface of the load-bearing deck trunk; a console disposed in the semi-submersible tower; a slideway disposed on the upper surface of the load-bearing deck trunk; and a connection member disposed between the load-bearing deck trunk and the semi-submersible tower. The load-bearing deck trunk adopts a box structure, and the box structure includes a top plate, a bottom plate, side plates, a plurality of cross rib plates, and vent holes. The plurality of cross rib plates is disposed between the top plate and the bottom plate to support the top plate.

Abstract: A wave power generation device, including a power generation assembly, a mooring system, a floating platform, floating towers, control cabins, a connecting member, and anti-sway plates. The floating platform is a square floating box. The power generation assembly includes a swing plate, a hydraulic cylinder, an energy accumulator, a hydraulic motor, a generator, a battery, and a power generation and distribution device. The floating platform includes a main deck. The main deck includes a manhole and a support for supporting the swing plate. The swing plate is connected to the support via a first hinge. One end of the hydraulic cylinder is connected to the swing plate, and another end of the hydraulic cylinder is connected to a floating platform. The mooring system includes four anchor windlasses. A method for operating and maintaining the wave power generation device is also provided.

Abstract: An underwater towing device, including an underwater towing assembly and a fixing mechanism of the underwater towing assembly. The underwater towing assembly includes a first floating body, a second floating body, and a third floating body. The fixing mechanism includes a fairlead carrier and two supports disposed on two sides of the fairlead carrier. The first floating body, the second floating body, and the third floating body are connected together via a fixing frame. The first floating body, the second floating body, and the third floating body have streamlined and bilaterally symmetrical shapes and all are hollow to accommodate experimental equipment. The first floating body is a cylinder having a drop-shaped horizontal cross-section. The upper part of the first floating body is provided with a buoyancy reserve tank having an elliptic horizontal cross-section.

Abstract: The present invention discloses a device capable of converting thermal energy into kinetic energy, in particular a thermal-powered device, including a housing (1) and a transmission device (2) disposed in the housing (1). Alloy sheets (3) are disposed at the transmission device (2). The housing (1) is formed with a heat source interface (6). In the present invention, thermal energy or other energy in the automobile exhaust gas is converted into kinetic energy output by virtue of the memory function of memory alloys, thus reducing emission of greenhouse gas, protecting the atmosphere environment, and conforming to the strategies and policies of economy of energy, environmental protection, and harmonious development between man and nature.

Abstract: The invention relates to a solar-powered apparatus, comprising a housing (1), a shield panel (5) disposed on the housing (1), and a transmission apparatus (2) disposed inside the housing (1). The transmission apparatus (2) is provided with eight or more memory alloy sheets (3). The housing (1) is also provided with a ratchet pawl (13). The shield panel (5) is provided with a light-focusing apparatus (51) used for focusing light. The apparatus is capable of converting solar energy into mechanical energy.

Abstract: A wave power generation device, including a power generation assembly, a mooring system, a floating platform, floating towers, control cabins, a connecting member, and anti-sway plates. The floating platform is a square floating box. The power generation assembly includes a swing plate, a hydraulic cylinder, an energy accumulator, a hydraulic motor, a generator, a battery, and a power generation and distribution device. The floating platform includes a main deck. The main deck includes a manhole and a support for supporting the swing plate. The swing plate is connected to the support via a first hinge. One end of the hydraulic cylinder is connected to the swing plate, and another end of the hydraulic cylinder is connected to a floating platform. The mooring system includes four anchor windlasses. A method for operating and maintaining the wave power generation device is also provided.

Abstract: An underwater towing device, including an underwater towing assembly and a fixing mechanism of the underwater towing assembly. The underwater towing assembly includes a first floating body, a second floating body, and a third floating body. The fixing mechanism includes a fairlead carrier and two supports disposed on two sides of the fairlead carrier. The first floating body, the second floating body, and the third floating body are connected together via a fixing frame. The first floating body, the second floating body, and the third floating body have streamlined and bilaterally symmetrical shapes and all are hollow to accommodate experimental equipment. The first floating body is a cylinder having a drop-shaped horizontal cross-section. The upper part of the first floating body is provided with a buoyancy reserve tank having an elliptic horizontal cross-section.

Abstract: Embodiments of the disclosure include an apparatus and methods for using a piezoelectric device, that includes an outer flextensional casing, a first cell and a last cell serially coupled to each other and coupled to the outer flextensional casing such that each cell having a flextensional cell structure and each cell receives an input force and provides an output force that is amplified based on the input force. The apparatus further includes a piezoelectric stack coupled to each cell such that the piezoelectric stack of each cell provides piezoelectric energy based on the output force for each cell. Further, the last cell receives an input force that is the output force from the first cell and the last cell provides an output apparatus force In addition, the piezoelectric energy harvested is based on the output apparatus force. Moreover, the apparatus provides displacement based on the output apparatus force.

Abstract: An imaging catheter system is provided, including a hollow lumen having a distal portion, and a plurality of first transducer elements arranged in a first array configured to be received within the distal portion of the hollow lumen. Each of the first transducer elements include a micromachined piezocomposite, and the plurality of first transducer elements is configured to operate at an effective operational frequency of greater than about 30 MHz. A plurality of second transducer elements configured to operate at an effective operational frequency of less than about 15 MHz may be arranged in a second array, each of the second transducer elements including a micromachined piezocomposite, and engaged with the first array. The low frequency array may be operated in a transmit mode and the high frequency array may be operated in a receive mode to facilitate contrast imaging.

Abstract: The present invention discloses a device capable of converting thermal energy into kinetic energy, in particular a thermal-powered device, including a housing (1) and a transmission device (2) disposed in the housing (1). Alloy sheets (3) are disposed at the transmission device (2). The housing (1) is formed with a heat source interface (6). In the present invention, thermal energy or other energy in the automobile exhaust gas is converted into kinetic energy output by virtue of the memory function of memory alloys, thus reducing emission of greenhouse gas, protecting the atmosphere environment, and conforming to the strategies and policies of economy of energy, environmental protection, and harmonious development between man and nature.

Abstract: The invention relates to a solar-powered apparatus, comprising a housing (1), a shield panel (5) disposed on the housing (1), and a transmission apparatus (2) disposed inside the housing (1). The transmission apparatus (2) is provided with eight or more memory alloy sheets (3). The housing (1) is also provided with a ratchet pawl (13). The shield panel (5) is provided with a light-focusing apparatus (51) used for focusing light. The apparatus is capable of converting solar energy into mechanical energy.

Abstract: A novel full piezoelectric multilayer stacked hybrid actuation/transduction system. The system demonstrates significantly-enhanced electromechanical performance by utilizing the cooperative contributions of the electromechanical responses of multilayer stacked negative and positive strain components. Both experimental and theoretical studies indicate that for this system, the displacement is over three times that of a same-sized conventional flextensional actuator/transducer. The system consists of at least 2 layers which include electromechanically active components. The layers are arranged such that when electric power is applied, one layer contracts in a transverse direction while the second layer expands in a transverse direction which is perpendicular to the transverse direction of the first layer. An alternate embodiment includes a third layer.

Abstract: The advanced modified high performance synthetic jet actuator with optimized curvature shape chamber (ASJA-M) is a synthetic jet actuator (SJA) with a lower volume reservoir or chamber. A curved chamber is used, instead of the conventional cylinder chamber, to reduce the dead volume of the jet chamber and increase the efficiency of the synthetic jet actuator. The shape of the curvature corresponds to the maximum displacement (deformation) profile of the electroactive diaphragm. The jet velocity and mass flow rate for the ASJA-M will be several times higher than conventional piezoelectric actuators.

Abstract: The present invention comprises a high performance, horizontal, zero-net mass-flux, synthetic jet actuator for active control of viscous, separated flow on subsonic and supersonic vehicles. The present invention is a horizontal piezoelectric hybrid zero-net mass-flux actuator, in which all the walls of the chamber are electrically controlled synergistically to reduce or enlarge the volume of the synthetic jet actuator chamber in three dimensions simultaneously and to reduce or enlarge the diameter of orifice of the synthetic jet actuator simultaneously with the reduction or enlargement of the volume of the chamber. The present invention is capable of installation in the wing surface as well as embedding in the wetted surfaces of a supersonic inlet. The jet velocity and mass flow rate for the SJA-H will be several times higher than conventional piezoelectric actuators.

Abstract: Embodiments of the disclosure include an apparatus and methods for using a piezoelectric device, that includes an outer flextensional casing, a first cell and a last cell serially coupled to each other and coupled to the outer flextensional casing such that each cell having a flextensional cell structure and each cell receives an input force and provides an output force that is amplified based on the input force. The apparatus further includes a piezoelectric stack coupled to each cell such that the piezoelectric stack of each cell provides piezoelectric energy based on the output force for each cell. Further, the last cell receives an input force that is the output force from the first cell and the last cell provides an output apparatus force In addition, the piezoelectric energy harvested is based on the output apparatus force. Moreover, the apparatus provides displacement based on the output apparatus force.

Abstract: A piezoelectric composite micromachined ultrasound transducer including single and multilayer 1-D and 2-D arrays having through-wafer-vias (TWVs) that significantly decreased electrical impedance per element, and hence the improved electrical impedance matching to T/R electronics and improved signal to noise ratio is disclosed. The TWVs facilitate integrated interconnection in single element transducers (positive and negative contact on the same side) and array transducers (contact pads array for integration with T/R switches and/or pre-amplifier circuits).

Abstract: The present invention comprises a high performance, vertical, zero-net mass-flux, synthetic jet actuator for active control of viscous, separated flow on subsonic and supersonic vehicles. The present invention is a vertical piezoelectric hybrid zero-net mass-flux actuator, in which all the walls of the chamber are electrically controlled synergistically to reduce or enlarge the volume of the synthetic jet actuator chamber in three dimensions simultaneously and to reduce or enlarge the diameter of orifice of the synthetic jet actuator simultaneously with the reduction or enlargement of the volume of the chamber. The jet velocity and mass flow rate for the present invention will be several times higher than conventional piezoelectric synthetic jet actuators.

Abstract: A piezoelectric composite micromachined ultrasound transducer including single and multilayer 1-D and 2-D arrays having through-wafer-vias (TWVs) that significantly decreased electrical impedance per element, and hence the improved electrical impedance matching to T/R electronics and improved signal to noise ratio is disclosed. The TWVs facilitate integrated interconnection in single element transducers (positive and negative contact on the same side) and array transducers (contact pads array for integration with T/R switches and/or pre-amplifier circuits).

Abstract: A piezoelectric composite micromachined ultrasound transducer including single and multilayer 1-D and 2-D arrays having through-wafer-vias (TWVs) that significantly decreased electrical impedance per element, and hence the improved electrical impedance matching to T/R electronics and improved signal to noise ratio is disclosed. The TWVs facilitate integrated interconnection in single element transducers (positive and negative contact on the same side) and array transducers (contact pads array for integration with T/R switches and/or pre-amplifier circuits).