Waves from cement bond logging with a sonic logging-while-drilling tool (LWD-CBL) are often contaminated with tool waves and may yield biased CBL amplitudes. The disclosed LWD-CBL wave processing corrects the first echo amplitudes of LWD-CBL before calculating the BI. The LWD-CBL wave processing calculates a tool wave amplitude and a phase angle difference as the difference of the phases between the tool waves and casing waves. The tool waves are then used to correct the LWD-CBL casing wave amplitude and remove errors introduced from tool waves. In conjunction with the sets of operations described, the LWD-CBL wave processing also include array preprocessing operations. Array preprocessing may employ variation of bandpass filtering and frequency-wavenumber (F-K) filtering operations to suppress tool wave.

Described herein are systems, methods and devices for gathering sound emission data from railway spikes in order to determine if a spike is undamaged, damaged, or broken via initiating sound waves in the spike and analyzing same to determine the structural integrity of the spike being tested.

Described is a method for estimating a material property of an object by means of a laser ultrasonic (LUS) measurement equipment comprising a generation laser, a detection laser and a detector. The method includes providing a laser pulse onto a surface of the object by the generation laser such that an ultrasonic pulse is generated in the object and such that an ultrasonic vibration is immediately generated on the surface, measuring at least a first subsequent ultrasonic echo from the object by use of the detection laser and the detector, which ultrasonic echo is an echo from the ultrasonic pulse generated in the object, measuring the ultrasonic vibration which is immediately generated on the surface, by use of the detection laser and the detector, and estimating the material property by use of an ultrasonic attenuation parameter based on the measured at least first subsequent ultrasonic echo, whereby the material property is estimated by using the measured ultrasonic vibration which is immediately generated on the surface as reference to the measured at least first subsequent ultrasonic echo.

A system includes a learning network having a signal processor configured to: receive learned signaling containing information about representative samples of conditions related to operating states of a hydrocyclone and characterized as learned samples of each condition when the learning network is trained, and raw signaling containing information about raw samples containing information about the current operation of the hydrocyclone; and determine corresponding signaling containing information about an operating state of the current operation of the hydrocyclone based upon a comparison of the learned signaling and the raw signaling.

A three dimensional (3D) detection device has a detection supporter base to be disposed on a transmission device, ultrasonic transceiver modules disposed on at least one inner base surface of the detection supporter base and a controller. When a tested object is transmitted by the transmission device and then enters the detection supporter base, the ultrasonic transceiver modules emit ultrasonic signals to the tested object, and the tested object reflects the ultrasonic signals to the ultrasonic transceiver modules. The ultrasonic transceiver modules generate detection signals according to the reflected ultrasonic signals. The detection signals are sent to the controller, and the controller generates an ultrasonic image corresponding to a tested object according to the detection signals, and then compares the ultrasonic image to a pre-established original 3D image, so to achieve a surface detection objective.

A test robot for testing slot breech wedges, which are provided on the outer periphery of a rotor of a generator, the rotor being surrounded by a stator, with a chassis, which receives a drive system, a position detection device, a controller, which controls the drive system based on data captured by the position detection device, magnets attached to the chassis, which are positioned and designed such that the magnets adherently hold the chassis to a magnetic substrate, at least one ultrasound test head, which is freely accessible from the underside of the chassis and is movable upward and downward, and at least one couplant application component, which is provided on the chassis and is associated with the ultrasound test head.

According to one embodiment, a structure evaluation system includes an impact imparting unit, a sensor, and a structure evaluation device. The impact imparting unit applies impacts to a structure. The impact imparting unit applies the impacts at a frequency equal to or less than a frequency determined in accordance with an intensity at which the impacts are imparted. The sensor detects elastic waves. The structure evaluation device evaluates a deterioration state of the structure on the basis of the detected elastic waves.

The present disclosure provides methods, microfluidic devices, and systems for isolating target particles from a sample containing or suspected of containing the target particles. The methods, microfluidic devices, and systems disclosed herein facilitate affinity-based isolation of target particles in a microfluidic channel by translating the target particles to the side walls of the microfluidic channel where capture agents that bind to the target particles are immobilized.

An assembly for monitoring particulate in a production fluid. The assembly supports routing of production fluid through a restriction and to a strategically located detector downstream and adjacent the restriction. Further, the detector incorporates acoustic attenuating features to provide a tailored detection focused on acoustics directly from particulate in the fluid. These features may include the use of a transducer housing with a ribbed profile to achieve the attenuation. Although, other types of attenuating techniques may be employed.

A sensor system for detecting particles within a fluid, the sensor system comprising: i) a gauge body having a working surface for receiving a particle containing fluid; ii) an impactor spaced apart from the working surface of the gauge body defining a spacing between the impactor and the working surface of the gauge body through which particle containing fluid can pass, wherein the sensor system is configured such that as the particle containing fluid passes through the spacing between the impactor and the working surface of the gauge body, particles disposed over the working surface are impacted by the impactor generating a signal which is dependent on one or both of the size and concentration of particles in the fluid; and iii) a sensor configured to detect the signal generated by the particles impacting the impactor and provide an output signal.