A system for non-destructive testing of a bond condition of concrete beams reinforced by steel rods is described. The system includes a transducing transmitter, a transducing receiver, and an ultrasonic pulse generator configured to generate drive signals for the transducing transmitter and receive a plurality vibrational waves at the transducing receiver. The system further includes a computing device including a measurement circuit configured to record a transit time for each vibrational wave and divide a distance between the transducing transmitter and the transducing receiver by the transit time to determine a pulse velocity of each vibrational wave, a comparison circuit configured to identify a highest pulse velocity of the vibrational waves and compare each highest pulse velocity to a first reference pulse velocity, and a decision circuit including an artificial neural network configured to identify a compromised bond condition around a steel rod.

A system, apparatus, and method for remotely detecting defects in a structure may proceed non-destructively. A mobile sensing platform may place sensors in a desired positioning relative to the structure. The desired position may include a non-contacting relation between the sensors and structure. The mobile sensing platform may project laser beams onto the structure and sense backscattered light via the sensors. Variations in the backscattered light may correspond to motion of the structure, such as vibrations. By calculating the frequency and amplitude of the vibrations, defects in the structure may be detected. By correcting for noise, such as that associated with acceleration of the mobile sensing platform, accuracy and precision of defect detection may be enhanced.

A methods and systems for determining a change in condition of a rock bolt. Some methods may comprise, at a first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a first time of flight for each of the shear and longitudinal waves, at a second point in time after the first point in time, propagating shear and longitudinal ultrasonic waves along the rock bolt to measure a second time of flight for each of the shear and longitudinal waves, and using the relative changes of the first and second time of flights, determining the change in condition of the rock bolt section.

A system and method for determining when a sand separator should be purged to remove solids from the sand separator. The system can include an acoustic sensor which detects the frequency of audible sound coming from the inner chamber of the vessel and generate a signature signal representative of the frequency of audible sound. There is a processor connected to the acoustic sensor and configured to compare the signature signal with a set frequency range of audible sound which in turn generates a signal indicating when the signature frequency and the set frequency are in overlapping relationship.

Disclosed are non-destructive evaluation systems and method thereof for detecting delamination, overlay debonding, spalling and detecting and differentiating between sound and delaminated patches in concrete structures. The non-destructive evaluation method for detecting delamination in concrete structures includes obtaining a plurality of acoustic waves, storing the plurality of acoustic waves, calculating a short-term Fourier transform (STFT) spectrum for each of the plurality of acoustic waves, wherein each STFT spectrum comprises a plurality of window discrete Fourier transforms, and detecting the delamination based on the STFT spectrum.

The current disclosure determines if structural faults exist and extracts geometric features of the structural faults from acoustic emission waveforms, such as crack length and orientation, and can evaluate the structural faults online, during normal operation conditions.

This disclosure presents a process to determine characteristics of a subterranean formation proximate a borehole. Borehole material can be typically pumped from the borehole, though borehole material can be used within the borehole as well. Extracted material of interest can be collected from the borehole material and prepared for analyzation. Typically, the preparation can utilize various processes, for example, separation, filtering, moisture removal, pressure control, cleaning, and other preparation processes. The prepared extracted material can be placed in a photoacoustic device where measurements can be taken, such as a photoacoustic imager or a photoacoustic spectroscopy device. A photoacoustic analyzer can generate results utilizing the measurements, where the results of the extracted material can include one or more of fracture parameters, fracture plane parameters, permeability parameters, porosity parameters, and composition parameters. The results can be communicated to other systems and processes to be used as inputs.

Systems and methods are provided for obtaining a flexural-attenuation measurement for cement evaluation that may be effective even for wells with relatively thick casings. A method includes emitting an acoustic signal at a casing in a well that excites the casing into generating an acoustic response signal containing acoustic waves, such as Lamb waves. The Lamb waves include flexural waves and extensional waves. The casing may be relatively large, having a thickness of at least 16 mm. The acoustic response signal may be detected and filtered to reduce a relative contribution of the extensional waves. This may correspondingly increase a relative contribution of the flexural waves. The filtered acoustic response signal may be used as a flexural-attenuation measurement for cement evaluation.

An apparatus and a method for testing combined dynamic-static loading strength of a rock-like material are provided. The apparatus and the method can test the combined dynamic-static loading strength of the rock-like material. The apparatus comprises an explosion load loading device, a static load loading device, and a stress wave rod transferring device. The explosion load loading device is connected with one end of the stress wave rod transferring device. The stress wave rod transferring device is connected with a rock-like material specimen. The stress wave rod transferring device is connected with the static load loading device.

A plurality of sensing devices are inserted into a concrete mixture to be used at a construction site. The concrete mixture is poured to form one or more structural elements, wherein one or more sensing devices are embedded in the concrete of each structural element. Data relating to a first characteristic of the concrete in each structural element is received from the sensing devices. For each structural element, a second characteristic of the concrete of the associated structural element is determined, based on the first characteristic. A map showing the one or more structural elements is generated. For each of the one or more structural elements, a respective graphical indicator indicating the second characteristic associated with the respective structural element is displayed on the map. The map is displayed on a user device.