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7.7 Curved Surface Metric
The curved surface metric is very useful function for inspection with angle probe on
curved surface of object to be inspected. This function may be activated from within
the
SETTING
menu – see 4.6.
Some parameters of angle probe shall be set in the
SETTING
menu prior to use this
function: ANGLE and X-VALUE. Then actual geometrical parameters of the object to
be inspected shall be set as well: – CURVED SURF. – INSIDE (concave) or
OUTSIDE (convex); DIAMETER and THICKNESS. The skip lengths are calculated
automatically and displayed as white zigzag line in the upper part of the screen.
In the Status Window, the parenthesis
symbol “(” next to the D and P symbols
indicates that depth of flaw D( and surface
projection distance P( are calculated from
the outside (convex) surface and vice versa,
the parenthesis symbol “)” next to the D and
P symbols indicates that depth of flaw D)
and surface projection distance P) are
calculated
from
the
inside
(concave)
surface.
The symbols /\/\ next to the sound path value S in the Status Window indicate, in
which half skip is flaw located.
If a relation of outside diameter D and thickness T is D <= 2*T, then material will be
considered as full and the cutting reflex is assumed. In such case, the symbol (O)
under the DIAMETER value is changed to O; in addition, SKIP XX.X mm is changed
to SKIP (\) XX.X mm.
If the combination of sizes is nonsense, then projection distance axis ~Pmm], P and
D values are not displayed, with pink
SKIP error
message under the CURVED
SURF.
