Abstract
Different types of artificial defects are used for a
qualification of NDT methods. The representativeness of
these defects, as compared to service induce flaws, is
crucial when the performance of NDT method or inspector
is evaluated.
Ultrasonic indications are highly dependent on defect
characteristics like roughness, crack opening, tilt and
branching. These characteristics are even more
significant than the defect size. To develop performance
and reliability of ultrasonic inspection methods and
procedures more research on different type of
discontinuity indications is needed.
In this study, indications from different types of
discontinuities are measured using C-mode scanning
acoustic microscope (C-SAM). The inspection item is
austenitic stainless steel pipe with thermal fatigue
cracks and similar size of EDM notches. Clear difference
can be seen between indications from the EDM notches and
from the thermal fatigue cracks.
| Original language | English |
|---|---|
| Title of host publication | Proceedings |
| Subtitle of host publication | 18th World Conference on Nondestructive Testing, WCNDT |
| Number of pages | 8 |
| Publication status | Published - 2012 |
| MoE publication type | A4 Article in a conference publication |
| Event | 18th World Conference on Non-Destructive Testing, WCNDT - Durban, South Africa Duration: 16 Apr 2012 → 20 Apr 2012 |
Conference
| Conference | 18th World Conference on Non-Destructive Testing, WCNDT |
|---|---|
| Abbreviated title | WCNDT |
| Country/Territory | South Africa |
| City | Durban |
| Period | 16/04/12 → 20/04/12 |
Keywords
- ultrasound
- ultrasonic inspection
- C-mode scanning acoustic microscope (C-SAM)
- thermal fatigue
- indication
- discontinuity
- defect
- qualification