A fluidic device includes at least one bulk acoustic wave (BAW) resonator structure with a functionalized active region, and at least one first (inlet) port defined through a cover structure arranged over a fluidic passage containing the active region. At least a portion of the at least one inlet port is registered with the active region, permitting fluid to be introduced in a direction orthogonal to a surface of the active region bearing functionalization material. Such arrangement promotes mixing proximate to a BAW resonator structure surface, thereby reducing analyte stratification, increasing analyte binding rate, and reducing measurement time.

A fluidic device includes at least one bulk acoustic wave (BAW) resonator structure with a functionalized active region, and at least one first (inlet) port defined through a cover structure arranged over a fluidic passage containing the active region. At least a portion of the at least one inlet port is registered with the active region, permitting fluid to be introduced in a direction orthogonal to a surface of the active region bearing functionalization material. Such arrangement promotes mixing proximate to a BAW resonator structure surface, thereby reducing analyte stratification, increasing analyte binding rate, and reducing measurement time.

Method is provided for determining the extent of defects, in particular of crack depths, in a test specimen. At least one transmitting transducer excites sound waves in the ultrasonic range, and the sound waves propagate in the form of a sound beam. The acoustic axis of the sound beam preferably forms an angle the normal to a surface of the test specimen facing the transmitting transducer. The sound waves couple into the test specimen obliquely and are reflected in particular in a V-shaped manner at a preferably outer interface of the test specimen. At least one receiving transducer spaced apart from the transmitting transducer receives the sound waves reflected at the interface of the test specimen. By means of an evaluation unit, an extent of a defect arranged within a sound path is determined from a reduction of the amplitude of the sound waves received by the receiving transducer. The transmitting transducer and the receiving transducer are guided past the test specimen at an at least substantially constant distance therefrom, and the sound waves are coupled into the test specimen with an advance section via a liquid medium. A device for detecting signals based on defects in a test specimen is also provided.

Embodiments relate to a method for ultrasonic testing according to the pulse-echo method as well as an arrangement for performing such a method. By means of an ultrasonic transducer, an ultrasonic pulse is obliquely incident into a sound incidence surface of a test object. Next, an echo signal is received from the test object. This takes place either by means of the ultrasonic transducer, which has emitted the ultrasonic pulse or with another ultrasonic transducer. The time amplitude characteristic of the echo signal is evaluated in a predefined defect expectation interval of time. The evaluation step includes, in at least one section of the amplitude characteristic, an amplification of the amplitude and/or a reduction in the threshold value. For example, the amplitude of the received echo signal is then compared with the predefined threshold value.

A multi-feed detection device includes a transmission circuit substrate on which an ultrasonic transmitter transmitting an ultrasonic wave is installed, and an ultrasonic receiver receiving the ultrasonic wave. The ultrasonic transmitter transmits the ultrasonic wave in a direction intersecting a thickness direction of the transmission circuit substrate and at least one of the ultrasonic transmitter and the ultrasonic receiver has a plurality of ultrasonic elements.

A transducer assembly for use in determining a health state of a joint (45) between first and second joined parts (42, 44); the transducer assembly comprising a transducer module (50) comprising a transducer element (100) for transmitting or receiving an ultrasonic signal to or from, respectively, the joint, and a mounting part (52) comprising an internal wedge portion (70), formed integrally with the mounting part (52), to which the transducer element (100) is fixed permanently so that the transducer module forms a unitary replaceable module.

A method and device are provided for determining a mode of detection of an element that reflects ultrasonic waves, wherein it comprises at least the following steps: For each point P of a given volume Zr, determining an ultrasonic field value A.sub.ij.sup.m (P) for N emitter-receiver pairs (i, j) and for one detection mode m,

computing a number

[00001]$C^m\left(P,\stackrel{.fwdarw.}{n}\right)=\underset{i,j=1}{\overset{N}{.Math.}}.Math..Math.c_{\mathrm{ij}}^m\left(P,\stackrel{.fwdarw.}{n}\right)$

of reflections of the wave where

[00002]$c_{\mathrm{ij}}^m=\{\begin{array}{cc}1& \mathrm{if}.Math..Math..Math.{\stackrel{.fwdarw.}{n}}_{\mathrm{ij}}^m\left(P\right).Math.\stackrel{.fwdarw.}{n}.Math.=1\\ 0& \mathrm{if}.Math..Math.\mathrm{not}\end{array}$

with {right arrow over (n)}.sub.ij.sup.m(P) the normal formed by the forward direction {right arrow over (d)}.sub.i and the backward direction {right arrow over (d)}.sub.j of the ultrasonic wave emitted and reflected by the reflecting element, computing the energy value E.sup.m(P,{right arrow over (n)}) for each point P of the zone Zr, with {right arrow over (n)} and for a plurality of modes m with

[00003]

A system provides for the calculation of the penetration depth of a weld in an orthotropic steel decking system. Weld scan section data is accessed and each scan section along the weld seam is processed to find the amount of penetration as a percentage of the thickness of the rib leg metal at the weld location. The amount of penetration is calculated by finding ultrasonic reflections recorded as voxels that have the greatest magnitude within an area of contiguous magnitudes and then determining the location of those voxels relative to the weld geometry and distance along the thickness of the rib leg steel. A report for each section scan and the entire weld seam may be generated for review by a weld inspector that allows for spot inspections of specified areas along the weld seam for possible weld remediation.

Disclosed is an inspection probe of an inspection system that includes an ultrasonic probe that is freely movable on a test object and irradiates the test object with an ultrasonic wave to detect a reflected wave, and a calculation unit that executes arithmetic processing according to a detection result according to the ultrasonic probe to acquire a flaw detection result of the test object. The inspection probe includes a chassis that is freely movable on a sheet material where a two-dimensional pattern disposed on the test object and indicating a position on the test object is drawn. The ultrasonic probe is fixed to the chassis so that an incident point of an ultrasonic wave that is incident onto an opposing surface of the test object from the ultrasonic probe is within an angle of view of the reader which reads the two-dimensional pattern.

The Invention refers to an airborne ultrasound testing system for a test object (3) containing an ultrasound generator (1; 9) and an ultrasound receiver (2) and a control to control both and a computer assisted test result interface to display an image of the tested test object (3). The ultrasound generator (1) is a resonance-free thermo-acoustic ultrasound generator which does not rely on mechanically deformable or oscillating parts and the ultrasound receiver (2) is a membrane-free and resonance-free optical microphone in an air or gas coupled pulse echo arrangement or in an air or gas coupled transmission mode arrangement. With this testing system, it is possible to test objects with high precision and without liquids and disturbing ringing effects.