Abstract:
A method for detecting a preload residual rate involves: a. installing a temperature sensor on one of two preloaded elements; b. making the two preloaded elements to move with respect to each other, and recording a time-related temperature variation sensed by the temperature sensor, so as to obtain an initial temperature-rising curve; c. making the two preloaded elements to move with respect to each other, and recording a time-related temperature variation sensed by the temperature sensor, so as to obtain a detected temperature-rising curve; and d. comparing the initial and detected temperature-rising curves, so as to obtain the preload residual rate between the two preloaded elements of the step c to the step b. The method detects a preload residual rate applied to an object when the object is operating while being advantageous in terms of cost, service life, response and accuracy.
Abstract:
Processing containers include a first member having a substantially rigid body with a plurality of regions defining spaced apart workstations and a flexible barrier member sealably attached to the first member to define a closed chamber over the plurality of workstations. The flexible barrier is substantially impermeable and includes or is a manipulation tool that is sealably attached to the barrier. The manipulation tool has a first internal interface that resides in the closed chamber under the flexible barrier and a second external interface that resides outside the closed chamber. The processing containers are particularly suitable for automated processing of nucleic acids and other samples. The manipulation tool can cooperate with or include a pipette head. When the barrier is sealed, the barrier separates the contents of the container from a robotic arm or other manipulation device.
Abstract:
A system for monitoring damage progression in a composite structure includes a load sensor, acoustic emission sensors, a camera, and a monitoring device. The load sensor measures an applied load to the structure. The sensors measure acoustic emission data indicative of possible damage to the structure. The camera captures image data of the structure in a designated portion of the electromagnetic spectrum. The monitoring device executes a method by which the acoustic emission data is synchronously collected with the image data and the applied load. The device automatically maps the acoustic emission data onto the image data to detect an area of damage progression in the composite structure. A failure event in the detected area of damage progression may be predicted using the mapped data, and a control action may be executed in response to the predicted failure event.
Abstract:
The present invention relates to a zip-line ride system. The zip-line ride system may consist of a tower and an anchor connected by a cable. The anchor may be fixed or temporary, allowing for a zip-line ride that may be portable. The zip-line ride system may also allow for an adjustment to the height, length, tension, or any combination of all three, of the cable.
Abstract:
A posture of a user is monitored by obtaining first pressure sensor information from a plurality of sensors upon a first item of furniture occupied by the user at a first time. First sensor position information defining the relative positions of the sensors upon the first item of furniture is also obtained. The first pressure sensor information and the first sensor position information are processed to determine a first user posture upon the first item of furniture. User posture is monitored over time and/or upon different items of furniture, and a cumulative load upon the user's spine over time is determined.
Abstract:
A process of forming a papermaking fabric. A value of at least one characteristic of a first papermaking fabric is determined. The at least one characteristic is related to one of (i) knuckles in the first papermaking fabric, (ii) pockets in the first papermaking fabric, and (iii) both knuckles and pockets in the first papermaking fabric. A second papermaking fabric is formed. The second papermaking fabric is configured such that a value of the at least one characteristic in the second papermaking fabric is different from the value of the characteristic in the first papermaking fabric.
Abstract:
Embodiments relate to stress compensation in differential sensors. In an embodiment, instead of compensating for stress on each sensor element independently, stress compensation circuitry aims to remove stress-related mismatch between two sensor elements using the sensor elements themselves to detect the mismatch. A circuit can be implemented in embodiments to detect mechanical stress-related mismatch between sensor elements using the sensor elements, and tune the output signal by a compensation factor to eliminate the mismatch. Embodiments are therefore less complicated and less expensive than conventional approaches. While embodiments have applicability to virtually any differential sensor, including magnetic field, pressure, temperature, current and speed, an example embodiment discussed herein relates to magnetic field.
Abstract:
An optical fiber having at least one fiduciary mark is provided. The at least one fiduciary mark is located at one or more axial positions along the optical fiber. The at least one fiduciary mark is configured to produce at least one change in a Rayleigh backscattering signal in the optical fiber. The at least one change in a Rayleigh backscattering signal may be an abrupt change in the Rayleigh backscattering signal. The abrupt change in the Rayleigh backscattering signal occurs over a length of the optical fiber that is of the order of or less than a spatial resolution of an interrogation system employed to detect the Rayleigh backscattering signal.
Abstract:
Diametral measurement systems can be used to measure and evaluate the diametral variation of cylindrical objects, such as cylindrical rock cores. A diametral measurement system can include two indicator gauges aligned opposite one another for measuring diametral variation as the cylindrical object is rotated. Measurements from the diametral measurement system may be obtained at predetermined intervals through one or more rotations of the cylindrical object. The measurements obtained from diametral measurement systems can be used to evaluate the magnitude and orientation of in-situ stress and strain normal to the rock core axis.
Abstract:
The present invention generally relates to lightweight, portable robot for analyzing golf balls for short game performance attributes. The preferred robot is specifically designed to be lightweight and portable and to be able to hit a golf ball off of the ground or a mat that simulates the ground such that realistic short game performance of clubs and balls can be evaluated.