Methods, systems, and apparatuses are provided for detecting conditions associated with a fluid conduit. An apparatus includes an insert having an internal conduit to connect with the fluid conduit and a plenum volume, and a detection device including a housing connected to the insert within the plenum volume, an acoustic sensor to receive acoustic signals, an acoustic exciter to apply acoustic signals to the housing, and a controller. The controller is electrically connected to the acoustic sensor and the acoustic exciter. The controller is configured to cause the acoustic exciter to apply an input acoustic signal to the housing, receive the acoustic signals from the housing using the acoustic sensor, analyze the received acoustic signals to determine a pipe condition of a pipe defining the fluid conduit or fluidically connected to the fluid conduit, and cause data representative of the pipe condition to be transmitted to an external device.

A measuring device for measuring an inspection target on the basis of vibration generated when the inspection target has been irradiated with laser light includes a condensing position deriving portion configured to derive an amount of adjustment of a distance between condensing lenses of a laser condensing unit configured to condense the laser light on the basis of a distance between a laser device configured to radiate the laser light and an irradiation location of the laser light and a communicating portion configured to transmit control information including information representing the amount of adjustment to the laser condensing unit.

The present disclosure provides systems and methods for non-destructively estimating the thickness of buried concrete without excavation. An example method may include placing one or more first accelerometers at a plurality of vertical positions below the surface of the ground at an approximate first distance from a vertical edge of the buried concrete each time. The method may further include, for each position in the plurality of vertical positions, generating a dispersive wave in the buried concrete and determining a time of arrival of the dispersive wave at the one or more first accelerometers. The method may further include estimating the thickness of the buried concrete based on at least the times of arrival of the dispersive waves at the one or more first accelerometers.

According to an embodiment, a diagnostic apparatus includes a sound-emitting unit, at least one measurement unit, and a processor. The sound-emitting unit includes a plurality of speakers arranged at equal angular intervals on a circumference of a circle, and is configured to emit a first vibration sound to a target by using the speakers. The at least one measurement unit is arranged on a central axis of the circle, and is configured to measure a vibration of the target generated in response to the first vibration sound, or a second vibration sound radiated from the target due to the vibration. The processor is configured to diagnose the target based on an output from the at least one measurement unit.

According to one embodiment, an inspection apparatus includes a vibration sensor, a microphone, and a processor. The vibration sensor detects a vibration of an inspection target object to which the vibration is excited. The microphone arranged near the inspection target object and collects a radiated sound from the inspection target object. The processor calculates an impulse response between the vibration sensor and the microphone. The processor denoises an unnecessary component from the impulse response. The processor converts the impulse response into a frequency characteristic. The processor calculates acoustic energy between the vibration sensor and the microphone based on the frequency characteristic. The processor determine the presence/absence of an abnormal state of the inspection target object.

A punching abnormality detection system, comprising: a punch, generating a vibration signal when working; an ultrasonic sensor, fixed on the punch and configured to convert the vibration signal into a voltage response signal; a data acquisition device, electrically connected to the ultrasonic sensor, configured to collect the voltage response signal in real time, generate a monitoring envelope curve, and analyze whether the voltage response curve deviates from the monitoring envelope curve; when the voltage response curve exceeds the monitoring envelope curve, the data acquisition device determine that the punch works abnormally, and an abnormal signal is output, thereby predicting production interruption caused by equipment abnormality during the production process and improving production quality.

An embodiment hammer device includes a driver, an upper body configured to move in a direction set by power generated from the driver, an elastic body provided on the upper body, a hammer provided in the elastic body, a force sensor provided in the hammer, and a support configured to support the elastic body and the hammer.

A detection system (100) and a method for identifying structural change (300) with a substrate (200) includes a sensor (101) configured to resonate at variable frequencies, the resonant frequency of the sensor changing in response to structural change in the substrate, a detector (102) located in proximity to the sensor for detecting the resonant frequency of the sensor, and a receiving device (103) in communication with the detector for receiving information output by the detector, an analyzing device (108) in communication with the receiving device for and interpreting information output by the receiving device. The sensor includes an engagement surface for engaging the substrate. The detector is located on the sensor and away from the engagement surface in such a way that the sensor and the detector are arranged to form a laminated structure.

This defect inspection apparatus (100) is provided with an excitation unit (1), a laser illumination unit (2), an interference unit (30), an imaging unit (31), a holding member (4) for holding the imaging unit at a position spaced apart from an inspection target (90) by a predetermined distance, a connecting member (5) for connecting the holding member or the imaging unit and the excitation unit, and a controller (6) for generating an image (61) related to the propagation of an elastic wave on an inspection target.

An apparatus and method facilitating a coin ping test that involves placing a coin in between two prongs that are covered with caps made of silicone, fabric, soft plastic, and/or other material or combination of materials that pinch and grip the coin tightly in place for a ping test. The elasticity of the caps also allows for the coin to be pressed down on one edge and then released, resulting in the coin snapping back down onto a hammer or surface causing the coin to ping on contact.