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Beam Probing

The second example shows results obtained with an angle beam probe for transverse waves in coarse grained grey cast iron. Two commercially available probes are compared the composite design SWK 60-2 and the standard design SWB 60-2. The reflector in this example is a side-drilled hole of 5 mm diameter. The A-scans displayed below in Fig. 5 and 6 show that the composite probe has a higher sensitivity by 12 dB and that the signal to noise ratio is improved by more than 6 dB. [Pg.709]

To determine the influence degree on both types of structure and volume of structural heterogeneity on the frequency spectrum characteristics of an ultrasonic pulse, research work using angle beam and straight beam probes was performed... [Pg.731]

Parameters of ultrasonic probe wideband angle beam probe with the frequency of 1.1-3.9MHz. [Pg.732]

Software for the use of straight beam probes and T/R probes (bond testing, corrosion mapping, general flaw detection)... [Pg.776]

Side drilled holes are widely used as reference reflectors, especially when angle beam probes are used (e.g. for weld testing). However, the distance law of side drilled holes is different to that of a flat bottomed hole. In the literature [2] a conversion formula is given which allows to convert the diameter of a side drilled hole into the diameter of a flat bottomed hole and vice versa, valid in the far field only, and for diameters greater than 1.5 times the wave length. In practical application this formula can be used down to approximately one nearfield length, without making big mistakes. Fig. 2 shows curves recorded from real flat bottomed holes, and the uncorrected and corrected DGS curves. [Pg.814]

K. Kimura Measurement of directivity for angle beam probe by side drilled holes and the effects of couplant thickness. Journal of JSNDI, Vol. 24, February, p88-89, (1975)... [Pg.908]

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Probe beam

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