A brake wear monitoring system for measuring extended wear lengths includes a processing unit, a plurality of linear Hall sensors in electronic communication with the processing unit, a wear pin coupled to a brake stack, the wear pin comprising a magnetic portion, wherein the plurality of linear Hall sensors are configured to detect a position of the wear pin via the magnetic portion, and the processing unit is configured to generate an output signal, based upon the position of the wear pin relative to the plurality of linear Hall sensors, to indicate a wear status of the brake stack.

A method and system for estimating parameters of pipes. The method may comprise disposing an electromagnetic (EM) logging tool into a pipe string, creating a log from a first set of one or more measurements, and creating a synthetic model of one or more nested pipes based at least in part on a well plan. The method may further comprise adding a modeled pipe to the synthetic model, estimating one or more parameters of the modeled pipe through model calibration to form a calibrated model, and performing an inversion with the calibrated model to estimate one or more pipe parameters of the pipe string. The system may comprise an electromagnetic logging tool that may comprise a transmitter, wherein the transmitter is a first coil and is operable to transmit an electromagnetic field, and a receiver, wherein the receiver is a second coil and is operable to measure the electromagnetic field.

This disclosure provides a tire formed of a body having multiple plies and a tread that surrounds the body. The plies and/or the treads and/or other surfaces of the tire include one or more resonators that respond to being interrogated by an externally generated excitation signal. Multiple resonators formed of electrically-conducting materials are disposed (e.g., printed) on the plies and/or tread and/or other surfaces of the tire. Each of a group of multiple resonators can be individually configured to respond to different frequencies of the excitation signal such that the presence of a response (e.g., a measured attenuation of the excitation signal return) or lack of response (e.g., based on comparison of the excitation signal return to calibration curves) from individual ones of the multiple resonators can be combined to form a serial number that is unique to the tire or other elastomer-containing component (e.g., belts, hoses, etc.) being interrogated.

A tread portion of a pneumatic tire includes a columnar wear measurement magnet that has magnetic flux density or magnetic field strength formed thereby decreased due to wear thereof along with wear of tread rubber of the tread portion and a columnar reference magnet provided at a position where the columnar reference magnet is not worn with the wear of the tread rubber. The wear measurement magnet and the reference magnet extend from a tread surface side toward a tire cavity region of the pneumatic tire, and an end of the reference magnet on the tread surface side is located farther from a tread surface where the tread portion contacts the ground than an end of the wear measurement magnet on the tread surface side.

A method and system for determining properties of a pipe string using multi-channel induction measurements. The method may comprise disposing a multi-channel induction tool in a cased hole, obtaining a multi-channel measurement, forming a log from the multi-channel measurement, extracting at least one abnormality that corresponds to known metal thickness, performing a search to find a set of pipe material properties that minimize a mismatch between the abnormality and a simulated response, and inverting the log to estimate the set of pipe material properties at one or more depth points using the set of pipe material properties. The system may comprise a multi-channel induction tool. The multi-channel induction tool may comprise at least one transmitter, at least one receiver, and an information handling system.

The invention relates to a measuring arrangement and to a method for the inductive analysis of metal objects, comprising a coil arrangement having an excitation coil (1.1) that can be excited by means of an excitation current, and at least one receiver coil (1.2), said two coils being inductively coupled to one another. By means of an evaluation unit, an output signal (5.4) of the measuring arrangement is evaluated. Means for generating a ramp-shaped voltage signal of the excitation voltage (2.5) as a specification for a ramp-shaped current through the excitation coil are provided. A control device regulates the current at the base point of the excitation coil (1.1) such that a ramp-shaped excitation current is produced, which is modulated by the metal object (1.6), and which affects the change in the excitation voltage. Thus, an inductive analysis or detection method is provided, in which temperature influences on the coil system have no effect at all, and which, moreover, allows a spectral analysis of the inductive properties of the metal to be analyzed in a wide frequency range.

An apparatus includes a series connection of at least a first impedance and a second impedance, the first impedance having a first terminal and a second terminal and the second impedance having a first terminal and a second terminal. The second terminal of the first impedance is connected to the first terminal of the second impedance forming a first node. The apparatus further includes a signal generator to apply a first amplitude modulated signal to the first terminal of the first impedance and a second amplitude modulated signal to the second terminal of the second impedance; and further includes an evaluation device configured to receive a first measurement signal from the first node and to determine information on the at least one physical parameter depending on the first measurement signal.

To implement robotic inspection of an in-service tank through the lower wall, a launch system is operatively coupled to the in-service tank carrying a multiphase fluid separated into a first fluid phase settled at the bottom of the in-service tank and a second fluid phase floating above the first fluid phase. The launch system includes multiple valves and is coupled to the bottom of the in-service tank. By operating the launch system, a robotic tank inspection device is introduced into the first fluid phase in the in-service tank while bypassing the second fluid phase. By operating the robotic tank inspection device, the bottom of the in-service tank is inspected for corrosion.

A strut of a magnetostrictive oscillator includes a strut body which includes an airfoil with a first end, a second end, a leading edge, a trailing edge, a first side, and a second side. The strut further includes a heater element within the first side and second side, wherein the heater element connects from the first side to the second side. The strut further includes an electrically insulative layer between the heater element and the strut body. The heater element and the electrically insulative layer are integral with the strut body.

Systems and methods for corrosion detection of downhole tubulars. A method may include disposing an electromagnetic logging tool in a wellbore, wherein the electromagnetic logging tool may comprise a transmitter and a receiver; making a first measurement with the electromagnetic logging tool in a first nominal section of the wellbore, wherein the first nominal section may comprise M pipes, wherein M may be a number of pipes positioned in the first nominal section; making a second measurement with the electromagnetic logging tool in a second nominal section of the wellbore, wherein the second nominal section may comprise N pipes, wherein N may be a number of pipes in the second nominal section, wherein N may be different than M; calculating a phase difference between the first and second measurements; calculating a thickness difference between the first and second measurements; calculating a first slope from at least the phase difference and the thickness difference; making a third measurement in a non-nominal section of the wellbore; and calculating a thickness associated with a depth of the third measurement using at least the first slope and the third measurement.