摘要:
Verfahren zur Untersuchung der Laufbahn eines Großwälzlagers in einer Windenergieanlage, bei dem mit einer an dem Lagergehäuse montierten Ultraschallmesseinrichtung eine Laufbahn des Großwälzlagers vermessen wird, wobei die Ultraschallmesseinrichtung zwei Kanten der Laufbahn erfasst und deren relative Lage und/oder Gestalt zueinander vermessen wird.
摘要:
The invention concerns an assembly for controlling welds by ultrasound, comprising at least one annular multi-element probe (12) having longitudinal waves inclined at between 0 and 5°, comprising several concentric annular elements, and a linear multi-element probe (14) having transverse waves inclined at between 35 and 70°, comprising several straight elements parallel to each other. The annular probe (12) comprises a member for emitting waves at a frequency of between 5 and 15MHz and a means for focusing the acoustic energy emitted from the annular elements by electronically managing delay laws. The linear probe (14) comprises a member for emitting waves at a frequency of between 6 and 10MHz and a means for focusing the acoustic energy emitted from the straight elements by electronically managing delay laws.
摘要:
The present invention relates to a method for making a device for monitoring the structural integrity of structures such as beams, plates and shells, made of isotropic, anisotropic and/or laminated material, and to such a device. The method provides to define a asymmetric directivity function D(k1,k2) that has, in the domain of wave numbers, a plurality of maxima arranged on different concentric circumferences having center in the origin of the axes. Then a load distribution in spatial coordinates f(x1,x2) is computed by inverse Fourier transform of the directivity function D(k1,k2). Then therefore the device is made with the electrodes, whose shape is obtained by gathering the values of the load distribution f(x1,x2) in the plane having for coordinates the set of real numbers and imaginary numbers, defining at least two sectors of said plane that comprise at least one real value and one imaginary value.
摘要:
A system includes an ultrasound measurement probe. The ultrasound measurement probe includes a lower portion. The lower portion includes a delay block, an array of ultrasound transducers coupled to the delay block, and a first circuit board. The first circuit board further includes a first plurality of pins coupled to the array of ultrasound transducers. The ultrasound measurement probe also includes an upper portion removably coupled to the lower portion. The upper portion includes a second circuit board. The second circuit board further includes a second plurality of pins configured to couple with the first plurality of pins when the upper portion is removably coupled to the lower portion.
摘要:
The invention refers to an apparatus (1) for inspecting an object (100) in the field of material testing. An emitter (10) emits ultrasound waves towards a measuring area (30) and a receiver (20) receives ultrasound waves from the measuring area (30). The emitter (10) emits ultrasound waves from different positions relative to the measuring area (30) and/or the receiver (20) receives ultrasound waves at different positions relative to the measuring area (30). The invention also refers to a corresponding method.
摘要:
The invention relates to a method for testing of a train wheel by ultrasound. The method is based on a pulsed ultrasonic field in the train wheel to be tested by an array of individually controllable ultrasonic transmitting transducers acoustically coupled to the train wheel each controlled with a specific analog transient excitation signal. Each analog transient excitation signal generated based on an ultrasonic transmitting transducer-specific stored digital transient excitation function. The resulting echo signals from the train wheel to be tested are recorded by an array of individually controllable ultrasonic receiving transducers. Each ultrasonic receiving transducer can provide an analog, time-resolved echo signal. The received echo signals can be digitized in a transducer-specific way and stored in a set. A plurality of different reception processing rules can then be applied to the latter. Furthermore, the invention relates to a device for carrying out the method.
摘要:
An inspection system 10 for performing an inspection of an end region 12 of a part 14 is provided. The inspection system includes a robotic assembly 20 positioned along a side of the part. The inspection system includes an ultrasonic probe 24 coupled to the robotic assembly 20 and positioned in proximity to the end region 12 of the part 14. The ultrasonic probe 24 is moved by the robotic assembly 20 along a path to inspect the end region of the part. During the inspection, the ultrasonic probe 24 transmits a signal towards the end region of the part and receives a reflected signal from the end region of the part. The inspection system provides, as a single system, for inspection of both a body of the part and the end region of the part.
摘要:
A method for the nondestructive testing of a test object by ultrasound is provided, the method including generating a pulsed ultrasonic field in the test object by means of an array of individually drivable ultrasonic transmitting transducers acoustically coupled to the test object. The ultrasonic transmitting transducers are each driven with a specific analog transient excitation signal, wherein each analog transient excitation signal is generated based on an ultrasonic transmitting transducer-specific stored digital transient excitation function. The method further includes receiving resulting echo signals from the test object by means of an array of individually drivable ultrasonic receiving transducers, with each ultrasonic receiving transducer providing an analog time-resolved echo signal, temporarily storing the time-resolved, transducer-specific, digitized echo signals in the form of an echo signal set, and applying a plurality of different reception processing rules to the echo signal set.