摘要:
Systems, apparatuses, and methods provide for measuring elastic modulus usable with a tubular object. A sound signal is propagated within the tubular object via a speaker coupled to a proximal end of an impedance tube. The propagated sound signal is measured within the tubular object via a pair of microphones coupled to the impedance tube. An elastic modulus of the tubular object is determined in response to the measurement of the propagated sound signal.
摘要:
An ultrasonic inspection device is used for inspecting a packaging container having a joined portion including overlapping and joined edges of the packaging container. The ultrasonic inspection device includes a transmitter configured to irradiate ultrasonic waves toward at least a base end portion of the joined portion in a state in which the joined portion protrudes from a surface of an object in a direction orthogonal to the surface, the base end portion being positioned on a side of the object. The ultrasonic inspection device further includes a plurality of receivers configured to receive the ultrasonic waves transmitted through the joined portion.
摘要:
In general, according to one embodiment, a sound inspection apparatus includes: at least three microphones, a removing unit, and an estimation unit; the removing unit calculates an impulse response based on a sound pressure of a radiation sound collected via reference microphone and a first microphone, calculate an impulse response based on the sound pressure of the radiation sound collected via the reference microphone and a second microphone, and remove a component corresponding to the vibration sound from the calculated impulse response; the intensity calculation unit calculates an intensity of the radiation sound based on the impulse response from which the vibration sound is removed; the estimation unit estimates, based on the calculated intensity, a site where an abnormality in the inspection target object has occurred.
摘要:
A method of automatically inspecting a weld bead deposited in a plurality of passes in a chamfer formed between two parts by performing the following steps: positioning at least one emission electromagnetic acoustic sensor on one side of the chamfer and at least one reception electromagnetic acoustic sensor an opposite side of the chamfer, the ultrasound wave emission sensor being configured to emit Rayleigh surface waves; while depositing a pass, automatically moving the sensors to follow the movement of welding electrodes along the chamfer; activating the sensors while they are moving to enable the emission sensor to generate and emit Rayleigh waves towards the pass of the weld bead that is being deposited, the reception sensor receiving the ultrasound signals transmitted and/or reflected in said pass; and reiterating the operation for the entire pass of the weld bead.
摘要:
It is described an apparatus for inspecting a pipeline, said apparatus including a cylindrical body (15) adapted to be transported inside said pipeline, an array of acoustical transducers (Tx,y) installed in the surface of the cylindrical body (15), the acoustical transducers being organized in columns and rows in a belt around the cylindrical body, a controller adapted to initiate a transmission of an acoustical signal from a first transducer (T2,2) and a reception of said acoustical signal from other transducers in said array surrounding the first transducer, the controller further being adapted to determine the direction to a flaw in the wall of said pipeline from the received acoustical signals.
摘要:
A method and apparatus for evaluating an object having a wrinkle are provided. An array of receiving elements is configured such that only two receiving apertures are configured to receive at a given point in time. Energy is sent into the object using an array of transmitting elements. Reflected energy is received at the only two receiving apertures of the array of receiving elements in response to a portion of the energy being reflected off a plurality of layers in the object. A number of dimensions of a wrinkle in the object is determined based on the reflected energy received at the only two receiving apertures of the array of receiving elements.
摘要:
A noisemaker system includes: a node of an infrastructure system; and a noisemaker including a vibrating plate, the vibrating plate including a top surface and a bottom surface, the bottom surface of the vibrating plate in contact with an exterior surface of the node, and an actuator configured to engage the top surface of the vibrating plate and generate an acoustic signal.
摘要:
Various approaches for assessing a part for a defect are disclosed and that are based upon SAW modes. In one embodiment, a part-under-test (120) is excited. One or more SAW modes (206) are identified in the frequency response (240/260) of the part-under-test (120). A SAW mode area (248/266) in the frequency response of the part-under-test (120) is compared with a baseline SAW mode area (238/258) of a baseline frequency response (230/250) (and which may be associated with an acceptable part). This comparison may be used to determine if the part-under-test (120) may be characterized defective in at least some respect.
摘要:
Structural health monitoring (“SHM”) methods, apparatus and techniques involve building deformation fields maps (amplitude and phase related to excitation) on the surface of the structural component under monitoring based on a network of strain measurements by fiber Bragg grating sensors.