HELLING test panel NR-5 corresponds to reference block PSM-5 acc. to ASTM (TAM Panel 146040).
Rectangly-shaped stainless steel plate (4 x 6 inch) with a chromium stripe at one side and five crack centres sorted according to their size. The other side is sand-blasted (medium roughness).
Application
| 1. |
Side with crack centres:
Monitoring and control of testing process of penetrant testing using manually, semi- or fully automatically operating crack testing equipment.
(Standard reference block for aerospace industry applications: Pratt & Whitney Aircraft TAM 146040)
|
| 2. |
Sand-blasted side:
Control of excess penetrant removal |
Not suitable for comparative tests with different test systems.
For each testing product family a separate reference block have to ap ply.
Reference block NR-5 fulfils as well as reference block PSM-5 the requirements of
- ASTM E1417 (§ 7.8.3.1)
- General Electric Specification P3TF2 (§ 5.4.1 and 10.1)
- MIL-STD 6866 (§ 5.8.3, 33B-11)
- NAVAIR 01-1A-16
- TM43-0103
