Provide an inspection apparatus and an inspection method capable of quickly inspecting a situation of joining between members in a joined body. The inspection apparatus is an inspection apparatus inspecting a situation of joining between a plurality of members in a joined body including the members joined to and overlapped one another.

Systems and methods to measure states of charge of a battery may include an ultrasonic sensor and a control system. For example, the control system may instruct the ultrasonic sensor to emit ultrasonic waves toward a battery, and may instruct the ultrasonic sensor to receive echoes of the emitted ultrasonic waves reflected back from the battery. In addition, the control system may process data associated with the emitted waves and received echoes, including properties associated with the waves and echoes, such as a time of flight, frequency, amplitude, wavelength, phase, duration, or others. Based on the properties of the received echoes, and by comparison with expected properties, various physical, mechanical, chemical, and/or material characteristics of the battery may be determined, based on which a state of charge and/or a state of health of the battery may further be determined.

An electro-magnetic acoustic transducer (EMAT) having an electromagnet array is provided. The electromagnet array includes electromagnets. Each electromagnet includes a magnetic core and a wound coil wrapped around the magnetic core. The electromagnet array generates bias magnetic fields having different patterns when the wound coils are energized differently. For instance, the electromagnet array generates a bias magnetic field having a given pattern, for the EMAT to transmit a first type of ultrasonic wave such as shear-horizontal wave, when the wound coils are energized in a given manner; and generates a bias magnetic field having a different pattern, for the EMAT to transmit a second type of ultrasonic wave such as a Lamb wave, when the wound coils are energized in a different manner.

An apparatus which includes a mounting, a plurality of detectors provided to detect a condition of at least on parameter indicative of presence of one or more materials in a gutter channel and data processing capabilities. A sequence of signals are transmitted and received when the apparatus is in a detection mode, and the data processing analyses the received signals to provide an indication if a material is detected as being present in the channel and, if detected, a type of the material. On the basis of this analysis and identification of material, decision can be made as to whether any remedial action is required to clear the material and/or decide upon an ongoing monitoring and maintenance.

A system and method for measuring characteristics, comprising: a directed energy source having an energy output which changes over time, incident on an object undergoing additive manufacturing; a sensor configured to measure a dynamic thermal response of at least a portion of the object undergoing additive manufacturing proximate to a directed location of the directed energy source over time with respect distance from the directed location; and at least one processor, configured to analyze the measured dynamic thermal response to determine presence of a manufacturing defect in the object undergoing additive manufacturing, before completion of manufacturing.

According to one embodiment, an ultrasonic device includes an ultrasonic transmitter. The ultrasonic transmitter includes a first element, a second element, and a driver. The first element is flexing-vibratable at a first resonant frequency. The second element is flexing-vibratable at a second resonant frequency different from the first resonant frequency. The driver is configured to supply a first electrical signal to the first element and to supply a second electrical signal to the second element. The first electrical signal includes a first signal having the first resonant frequency. The second electrical signal includes a second signal having the second resonant frequency.

A method for monitoring hydrate formation in an interior of a tube may include deploying a first hydrate controller device at a first location on an exterior surface of the tube. The method may include deploying a second hydrate controller device at a second location on the exterior surface of the tube. The method may include transmitting, by the first hydrate controller device, first acoustic signals towards the interior of the tube. The first acoustic signals may include a first frequency value and a first amplitude value associated to a transmission power level. The method may include receiving, by the second hydrate controller device, the first acoustic signals. The method may include measuring, by the second hydrate controller device, a reception power level of the first acoustic signals.

Operating parameters are selected for inspecting a structure. Selecting the operating parameters includes exciting broadband ultrasonic guided waves in a multilayered structure, acquiring data corresponding to the sensed broadband ultrasonic guided waves in the multilayered structure, selecting one or more narrow frequency bands based on the acquired data, and inspecting the multilayered structure using ultrasonic guided waves in the one or more narrow frequency bands. In some examples, the data is acquired by an inspection tool capable of sensing the broadband ultrasonic guided waves in the multilayered structure.

A method is provided for generating ultrasound transmission waves comprising: a) providing an array of electroacoustic transducer elements each one being connected to an electric excitation signal generator by a dedicated feeding channel; b) feeding at least a part of the electroacoustic transducer elements with a pulsed electric signal having a predetermined frequency, a predetermined amplitude, a predetermined length or duration and a predetermined phase or a predefined delay with respect to the pulsed electric signals fed to the adjacent transducer elements, the said pulsed electric excitation signals comprising a sequence of pulses; c) modulating each or at least part of the pulsed electric signals by feeding to the transducer elements only a predetermined portion of the pulses of the said pulsed electric signals. Modulating is carried out by cutting the duration of each pulse of the pulsed electric excitation signal according to a predetermined time period.

A method for monitoring hydrate formation in an interior of a tube may include deploying a first hydrate controller device at a first location on an exterior surface of the tube. The method may include deploying a second hydrate controller device at a second location on the exterior surface of the tube. The method may include transmitting, by the first hydrate controller device, first acoustic signals towards the interior of the tube. The first acoustic signals may include a first frequency value and a first amplitude value associated to a transmission power level. The method may include receiving, by the second hydrate controller device, the first acoustic signals. The method may include measuring, by the second hydrate controller device, a reception power level of the first acoustic signals.