Các thuật ngữ trong ISO (49)
...
corrosion
ISO 8785:1998(en), 4.4.3
combined surface imperfection height
SIM<sub>ch</sub>
distance between the reference surface and the uppermost point of the surface imperfection, measured from and perpendicular to the reference surface
ISO 8785:1998(en), 3.4.1
single surface imperfection height
SIM<sub>sh</sub>
greatest height of the surface imperfection, measured from and perpendicular to the reference surface
ISO 8785:1998(en), 3.4
dent
ISO 8785:1998(en), 4.1.10
crazing
ISO 8785:1998(en), 4.4.5
crater
hollow with a circular contour and raised edges resembling the mouth of a volcano; the edges are higher than the reference surface cf. dent
(4.1.10)
ISO 8785:1998(en), 4.3.1
total surface imperfection area
SIM<sub>t</sub>
area equal to the sum of the individual surface imperfection areas, within the agreed limits of discrimination
Note 1 to entry:
- 1 The total surface imperfections area is calculated as:
- 2 When specifying the agreed limits of discrimination, the dimensional criterion that should be used is the minimum dimension of surface imperfection characteristic below which the surface imperfection is neglected when determining the SIMn and SIMt values.
ISO 8785:1998(en), 3.6
surface imperfection evaluation area
<span class="normal"><i>A</i></span>
portion of the real surface or the whole real surface of a workpiece on which surface imperfections are specified and inspected
ISO 8785:1998(en), 2.2
