Abstract: A distribution manifold includes a main trunk line at a first end of the manifold proximate a boost pump, two branch lines at a downstream end of the main trunk line, a first Y-connector coupling upstream ends of the two branch lines to the downstream end of the main trunk line, two sub-branch lines at a downstream end of each of the two branch lines, and two second Y-connectors coupling upstream ends of the four sub-branch lines to the downstream ends of the two respective branch lines. A sum of cross-sectional areas of downstream ends of the four sub-branch lines is equal to the cross-sectional area of the upstream end of the main trunk line.

Abstract: A machine health monitoring method may include receiving vibration data indicating vibration of a machine or a component of the machine, determining damage to the machine or the component for each of a plurality of load cycles based on the vibration data, determining the time rate of change of the damage to the machine or the component over the plurality of load cycles, and determining a damage rate based on the time rate of change of the damage to the machine or the component relative to a baseline damage rate.

Abstract: A distribution manifold includes a main trunk line at a first end of the manifold proximate a boost pump, two branch lines at a downstream end of the main trunk line, a first Y-connector coupling upstream ends of the two branch lines to the downstream end of the main trunk line, two sub-branch lines at a downstream end of each of the two branch lines, and two second Y-connectors coupling upstream ends of the four sub-branch lines to the downstream ends of the two respective branch lines.

Abstract: A suction manifold for providing fluid flow to a pump for hydraulic fracturing includes an input port configured to receive a flow of fluid from a source, a plurality of output ports configured to direct the flow of fluid to a plurality of corresponding cylinders of the pump, and a chamber configured to direct the flow of fluid from the input port to the output ports. The input port is configured to direct the flow of fluid in a direction parallel to a direction in which the output ports direct the flow of fluid.

Abstract: A machine health monitoring method may include receiving vibration data indicating vibration of a machine or a component of the machine, determining damage to the machine or the component for each of a plurality of load cycles based on the vibration data, determining the time rate of change of the damage to the machine or the component over the plurality of load cycles, and determining a damage rate based on the time rate of change of the damage to the machine or the component relative to a baseline damage rate.

Abstract: An apparatus for harvesting energy from motion of a prosthetic limb, wherein the prosthetic limb has motion in at least one degree of freedom, may include a hydraulic amplifier mechanically coupled with a generator. The hydraulic amplifier may include an input member configured to receive an input motion when a first motion in a degree of freedom of the prosthetic limb causes pressure and motion of hydraulic fluid. The hydraulic amplifier is configured to amplify the input motion of the input member to a greater output motion. The generator is configured to convert mechanical energy of the output motion into corresponding electrical energy delivered to one of an electrical load and an electrical storage reservoir.

Abstract: A improved method of monitoring a structure by mounting a sensor within a cavity of the structure to measure at least one of strain experienced by the structure and vibration experience by the structure. Mounting a wireless communication unit mounted within the structure and connecting the wireless communication unit to the sensor to receive data from the sensor and transmit the data to a receiver outside the structure. Mounting a power supply within the structure and connecting the power supply to the sensor and the wireless communication unit to supply necessary electrical power to the sensor and the communication unit.

Abstract: An apparatus for harvesting energy from motion of a prosthetic limb, wherein the prosthetic limb has motion in at least one degree of freedom, may include a piston configured to receive an input motion and provide an output motion when a first motion in a degree of freedom of the prosthetic limb causes pressure and motion of hydraulic fluid. The apparatus may include an electromagnetic motor for converting mechanical energy of the output motion into corresponding electrical energy delivered to an electrical load and a variable-impedance energy harvesting circuit across terminals of the motor.

Abstract: An internal structural monitoring system for a structure that includes a sensor mounted within the structure to measure at least one of strain experienced by the structure and vibration experience by the structure. It includes a first system support mounted and second system support mounted in the structure, where the first system and the second system support are mounted in the structure such that the sensor is between the first system support and the second system support to hold the sensor in position so that the sensor senses at least one of strain and vibration. It includes a wireless communication unit mounted within the structure, the wireless communication unit connected to the sensor to receive data from the sensor and transmit the data to a receiver outside the structure. It includes a power supply mounted within the structure to supply necessary electrical power to the sensor and the communication unit.

Abstract: An apparatus for harvesting energy from motion of a prosthetic limb, wherein the prosthetic limb has motion in at least one degree of freedom, may include a hydraulic amplifier mechanically coupled with a generator. The hydraulic amplifier may include an input member configured to receive an input motion when a first motion in a degree of freedom of the prosthetic limb causes pressure and motion of hydraulic fluid. The hydraulic amplifier is configured to amplify the input motion of the input member to a greater output motion. The generator is configured to convert mechanical energy of the output motion into corresponding electrical energy delivered to one of an electrical load and an electrical storage reservoir.

Abstract: An apparatus for harvesting energy from motion of a prosthetic limb, wherein the prosthetic limb has motion in at least one degree of freedom, may include a piston configured to receive an input motion and provide an output motion when a first motion in a degree of freedom of the prosthetic limb causes pressure and motion of hydraulic fluid. The apparatus may include an electromagnetic motor for converting mechanical energy of the output motion into corresponding electrical energy delivered to an electrical load and a variable-impedance energy harvesting circuit across terminals of the motor.

Abstract: A position sensing system including a flexible tether and at least one sensor at least partially embedded within a portion of the flexible tether is disclosed. The sensor may be adapted to detect a sensor position factor. The system also includes a communication device adapted to transmit the sensor position factor from the sensor, and a signal processor adapted to receive the sensor position factor. The signal processor is also adapted to calculate at least one of the shape or orientation of the flexible tether from the sensor position factor. The sensor position factor may be relative orientation, relative depth, relative pressure, presence of a magnetic field, presence of an electric field, acceleration, or relative rate of rotation. The system may also include a probe connected to the flexible tether, and the signal processor may calculate the orientation of the probe from the sensor position factor.

Abstract: Resonant sensors, preferably having floating bilayer symmetry, and their methods of use is determining the presence, amount or binding kinetics of an analyte of interest in a test sample are disclosed. The test sample may be a liquid or gas.

Abstract: Resonant sensors, preferably having floating bilayer symmetry, and their methods of use is determining the presence, amount or binding kinetics of an analyte of interest in a test sample are disclosed. The test sample may be a liquid or gas.

Abstract: A position sensing system including a flexible tether and at least one sensor at least partially embedded within a portion of the flexible tether is disclosed. The sensor may be adapted to detect a sensor position factor. The system also includes a communication device adapted to transmit the sensor position factor from the sensor, and a signal processor adapted to receive the sensor position factor. The signal processor is also adapted to calculate at least one of the shape or orientation of the flexible tether from the sensor position factor. The sensor position factor may be relative orientation, relative depth, relative pressure, presence of a magnetic field, presence of an electric field, acceleration, or relative rate of rotation. The system may also include a probe connected to the flexible tether, and the signal processor may calculate the orientation of the probe from the sensor position factor.