Abstract:
An acoustic line tracing system for tracing a fluid transfer system tubing line is described. The tracing system comprises: an infusion pump; a first acoustic receiver operably connectable to the tubing line and configured to receive a vibratory signal, the first acoustic receiver including: a first vibration sensor disposed to contact the tubing line, said first vibration sensor being configured for detecting vibration of the surface of the tubing line caused by the vibratory signal; and a signal transmitter operatively contacting the tubing set and electrically coupled with said first acoustic receiver, said signal transmitter configured for generating acoustic vibrations in the tubing line when said first vibration sensor detects the vibratory signal. The first acoustic receiver is upstream from the infusion pump and the signal transmitter is downstream from the infusion pump for reducing dampening of the vibratory signal by the infusion pump. Also described is a method for determining continuity of a tubing set.
Abstract:
According to an embodiment, a structure evaluation system includes a plurality of AE sensors, a signal processor, a position locator, a velocity calculator, and an evaluator. The AE sensors detect an elastic wave generated from a structure. The signal processor extracts an AE signal including information on the elastic wave by performing signal processing on the elastic wave detected by the AE sensor. The position locator derives a wave source distribution indicating a distribution of sources of the elastic waves generated in the structure on the basis of the AE signals. The velocity calculator derives a propagation velocity of the elastic wave generated in the structure on the basis of the AE signal. The evaluator evaluates the soundness of the structure on the basis of the wave source distributions and the propagation velocity of the elastic waves.
Abstract:
The present invention relates to a unit ultrasonic wave probe, an ultrasonic wave probe module, and an ultrasonic wave probe device. The unit ultrasonic probe according to the present invention includes: a rear block part; a flexible substrate part arranged on the top of the rear block part; and a piezoelectric wafer arranged on the top of and electrically connected with the flexible substrate part, the wafer being formed to have a smaller size than the rear block part, so that even if increasing the number of piezoelectric wafers transversely, the number of channels is increased by depositing the unit ultrasonic wave probe including the piezoelectric wafer, thus preventing the cost from geometrically increasing because of the structure of the flexible substrate becoming complex.
Abstract:
When frequencies used in the two-frequency measurement of a SAW sensor are represented by f 1 and f 2 (f 2 > f 1 ), an electrical signal processing device is provided without use of oversampling at a frequency higher than twice the frequency f 2 or a two-system low-frequency conversion circuit, in which temperature compensation with the same accuracy as the case where these are used can be realized. Narrow band frequency filtering is applied to a waveform after roundtrips in a delay line type SAW sensor capable of transmitting and receiving multiple frequencies, the two frequencies f 1 and f 2 (f 2 > f 1 ) are extracted, and a delay time is determined utilizing an aliasing obtained by applying undersampling at a frequency lower than twice the frequency f 1 .
Abstract:
The invention relates to an assembly for nondestructive material testing, by means of which assembly shear waves are emitted into elastic surfaces of components or workpieces and detected, wherein piezoelectric transducer elements are arranged one over the other in a plurality of planes and the piezoelectric transducer elements that are arranged in adjacent planes are operated oppositely to each other. The piezoelectric transducer elements can be piezoelectric fibers and/or piezoelectric plate-shaped elements, which are connected to or embedded in an elastically deformable material.
Abstract:
It becomes possible to obtain high sound pressure in a high frequency domain by a capacitive ultrasonic transducer which comprises a membrane 9 on which one electrode 7 is formed, a cavity 13 constructed in its backface, and a substrate 2 on which these are mounted and supported and on whose surface an electrode 12 is provided, on a surface in an ultrasonic transmission and reception side, characterized in that the membrane 9 comprises two or more layers, and at least one layer of them comprises a high dielectric constant film 8.
Abstract:
An acoustical transformer having a last matching section that includes a protective barrier of low permeability. The protective barrier is in contact with a test medium. In one embodiment, the protective barrier comprises one or more low permeability layers, such as a metallic foil or metallic coating(s) disposed on a low impedance layer such as polyimide, so that the low impedance layer and the protective barrier constitute the last matching section of the acoustical transformer. In other embodiments, the protective barrier comprises a fluoropolymer. A method for determining the thicknesses of the various layers of the acoustical transformer for enhanced performance is also disclosed.
Abstract:
An ultrasound therapy system is provided that can include any number of features. In some embodiments, the custom transducer housings can be manufactured using a rapid-prototyping method to arrange a plurality of single-element, substantially flat transducers to share a common focal point. The rapid-prototyping method can include, for example, fused-deposition modeling, 3D printing, and stereolithography. In some embodiments, the therapy system can include a plurality of transducer modules insertable into the openings of the transducer housing. Methods of manufacture are also described, including designing a transducer housing shell to a desired geometry and a plurality of acoustic focusing lenses integral to the transducer housing shell in a 3D computer aided design software, and constructing the transducer housing shell and the plurality of acoustic focusing lenses integral to the transducer housing shell using a rapid-prototyping method.
Abstract:
Die vorliegende Erfindung betrifft eine Vorrichtung zur berührungslosen Überprüfung von Werkstücken, die mindestens einen elektromagnetischen Ultraschallwandler (EMUS-Wandler) sowie mindestens einen Luftschallwandler umfasst. Zudem betrifft die Erfindung ein Verfahren zur berührungslosen Anregung und Empfang von Ultraschallen in Werkstücken aus elektrisch leitfähigen Materialien, wobei mittels eines elektromagnetischen Wechselfeldes im Werkstück Ultraschall induziert und der Ultraschall akustisch detektiert wird. Alternativ oder zusätzlich hierzu ist es erfindungsgemäß ebenso möglich, mittels Ultraschall im Werkstück ein elektromagnetisches Wechselfeld zu induzieren und das elektromagnetische Wechselfeld zu detektieren.