Here is a comprehensive review of the methods being
used at present or under development, for qualitative interpretation of
reflectors by means of pulse-echo techniques.
Ultrasonic inspection is used to determine whether or not
a test piece may be used according to its intended purpose
("fit for purpose"); that is, whether it is free of
discontinuities or contains defects.
The definition of "defects" cannot be determined solely
from ultrasonic information : knowledge of the construction of
the test piece, its intended purpose, its material and its
fabrication process is necessary. All this information is
important to decide whether an inspected part may be used
or not.
Therefore, in the following text the term "defect evaluation"
will not be used if we are referring to the interpretation of
ultrasonic pulse echoes.
Author:
U. Schlengermann
works many years in the development and application department
for Krautkrämer GmbH D-Hürth.
This Article is a 'reprint' and was published in the Echo 33,34,35.
"the echo" is published free of charge at various intervals. Produced by:
Krautkrämer GmbH Co.
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P. 0. Box 13 63 D-50354 Hürth
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