Abstract:
The invention provides a method and apparatus for assessing a condition of a fluid conduit from its interior. The method comprises providing a measurement apparatus comprising at least one wideband acoustic transducer within the fluid conduit and transmitting a wideband acoustic signal from the measurement apparatus to excite a broadside resonance in at least a portion of the fluid conduit. A wideband acoustic signal is received in the measurement apparatus due to a broadside resonant response of the fluid conduit to obtain a wideband acoustic data set; and the data set is analysed to assess the condition of the fluid conduit.
Abstract:
Systems and methods for measuring corrosion rate of an equipment material are provided. A system may comprise a corrosion probe body for insertion within an interior of the equipment through which corrodant fluid flows. At least one sensor on the corrosion probe body includes an ultrasonic source configured to provide an ultrasonic signal into the probe body material, and a receiver configured to receive reflections of the ultrasonic signal from the probe body material and generate electrical response signals indicative of the travel time of the ultrasonic signal. A heat exchanger may be placed in fluid communication with the probe body to deliver heated or cooled fluids to the probe body. A processor is configured to process the electrical response signals and produce corresponding corrosion data.
Abstract:
Disclosed is a system and method for monitoring wind turbines, comprising a microphone for picking up acoustic emissions from a wind turbine and outputting a signal corresponding to the emissions; a filter for splitting the signal into a plurality of signals according to a plurality of frequency bands; and a processor for processing the plurality of signals and generating sound level data corresponding to at least a subset of the frequency bands. The system compares the sound level data with a sound threshold and generates an alarm signal when the sound level data exceeds the sound threshold. Alternatively, the system may include different thresholds corresponding to the different frequency bands, and an alarm can be generated when one or more of the different thresholds are exceeded by the different signals in the different frequency bands.
Abstract:
The application provides a device for measuring at least one parameter value of a suspended sediment of a fluid. The device includes a backscattering transducer module, a storage unit, and a calculation unit. The backscattering transducer module comprises a source module and a receiver module. The source module transmits at least three acoustic signals with different fixed characterising measurement frequencies while the receiver module measures at least three echo level values of echo signals, which correspond with the at least three acoustic signals. The storage unit stores a data set of predetermined echo level values with a data set of pre-determined suspended sediment parameter values. The calculation unit derives at least one suspended sediment parameter value from the data sets and the at least three echo level values.
Abstract:
L'invention concerne un appareil de diagnostic 1 pour la détection d'un délaminage dans l'épaisseur d'un panneau en composite stratifié. L'appareil de diagnostic permet l'une inspection d'un panneau ayant une épaisseur non constante selon sa longueur. L'appareil de diagnostic comprend une sonde ultrasonore 30 destinée à être mise au contact de la face avant du panneau à inspecter, un dispositif électronique 40 pour commander l'émission et la réception d'impulsions ultrasonores 51 par la sonde ultrasonore 30, ainsi qu'un dispositif de visualisation 41 muni notamment de témoins quant à la présence ou non de délaminage dans le panneau.
Abstract:
A solution for evaluating the condition of a rail component based on resonant response profiles across a set of bands of vibrations. The vibrations can be induced into the target component during normal operation of the target component. The resonant response profile of the rail component can vary depending on wear or damage, and thus can be used to determine whether the rail component can safely remain in use. An embodiment comprises an isolated segment of rail of a length selected to allow a single railroad wheel on it at a time, with a set of devices which can induce specific vibrations into the wheel as it passes, and another set of devices which can acquire the resonance signals from the wheel.
Abstract:
A device for acoustic measuring in a medium in a borehole such as velocity of sound in the medium or velocity of the medium, includes at least a first acoustic array situated in a first, slanted sidewall of a measuring area and operating to emit a series of acoustic waveforms across a measuring area. In one form, the device includes a second acoustic array situated in a second, slanted sidewall of the measuring area and operating to receive an acoustic signal resulting from the emitted series of acoustic waveforms or to receive said acoustic signal and emit a second series of acoustic waveforms. A the processor measures a time between when a predefined portion of one of the series of acoustic waveforms was emitted and when a predefined portion of the received acoustic signal corresponding to the predefined portion of one of the series of acoustic waveforms is received by the acoustic receiver, and correlates the measured time to a reference time, then outputs a correlation factor for determining the velocity of sound in the medium in the measuring area. The processor may also calculate transit time for the two emitted acoustic signals or echoes from the first emitted acoustic signals to determine medium flow velocity.
Abstract:
본 발명은 마이크로프로세서를 이용한 관로 파이프 구간의 검사 장치 및 그 방법에 관한 것으로, 더욱 상세하게는 음원 송신기와 수신기를 구비하고, 상기 송수신기 사이에 배열된 파이프를 검사하도록 구성된 관로 파이프 구간의 검사 장치에 있어서, 검사 대상의 파이프;와 상기 파이프 (300)에 진동을 일으키는 송신변환기; 상기 송신변환기에 진동을 발생시키는 전압을 공급하기 위한 펄스 발진기; 상기 펄스 발진기와 상기 송신변환기를 선택적으로 연결하거나 차단하도록 구비된 리모트 스위치;와 상기 리모트 스위치를 제어하는 리모트 제어수단; 및 상기 리모트 제어수단을 구동하는 마이크로프로세서;를 구비하고, 상기 송신변환기가 위치한 일단으로부터 소정의 거리에 떨어진 상기 파이프의 타단에는 상기 파이프로 전파되는 진동을 픽업하여 전기적 신호로 변환하기 위한 수신 변환기;와 상기 수신 변환기로부터의 전기적 신호를 증폭하는 수신증폭기;와 상기 수신증폭기로부터의 아날로그 신호를 디지털 데이터로 변환하는 A/D 변환기; 및 상기 A/D 변환기로부터의 데이터를 받아 가공 분석하는 마이크로프로세서; 상기 마이크로프로세서로부터 상기 파이프의 이상 유무를 출력하는 테스트 출력 단자;로 구성되며, 상기 마이크로프로세서 (700)는, 수신된 파형에 대해 직접파 (740)부분을 절대값을 취하여 적분하고 평균값을 계산하고, 상기 평균값을 정상상태의 제 1기준값과 비교하여 직접파의 경로의 파이프 크랙 (310)이나 파이프 침식 (320)의 존재여부를 테스트 출력 (800) 단자로 출력하고 상기 수신된 파형을 시간의 흐름에 따라 영상화모듈 (900)로 전송하며, 상기 영상화모듈 (900)은 상기 수신된 파형을 시간 단위로 취득한 후에 취득된 시간 단위의 수신된 파형을 일정 단위로 절단하고, 절단된 수신된 파형의 왜곡을 보정하며,보정된 수신 파형을 평면도면화로 접합하고, 상기 평면도면화된 수신 파형을 기저장된 파이프 이미지의 평면도면에 오버랩핑하여 표시하고, 상기 파이프 크랙 (310)이나 파이프 침식 (320)을 나타내는 손상 상황 및 손상의 치수를 표시하며, 손상 위치를 확대하여 표시하는 것을 특징으로 하는 마이크로프로세서를 이용한 관로 파이프 구간의 검사 장치와 이를 이용한 검사 방법을 제공한다.
Abstract:
Methods and apparatus for evaluating vibration resistance of a component of a fluid control valve are disclosed herein. An example method disclosed herein includes selecting a component of a fluid control valve and positioning a sensor relative to the selected component. The method also includes mechanically exciting the selected component, determining a resonant frequency of the selected component, and taking corrective action based on the resonant frequency of the selected component.
Abstract:
In a process plant, a first series of impedance measurements from a valve body are received. The first series of impedance measurements are stored. A second series of impedance measurements from the valve body are received. The second series of impedance measurements from the valve body are stored. The first series and second series of impedance measurements are compared. An indication of loss of integrity of the valve body is generated if the first series of impedance measurements deviates from the second series of impedance measurements.