Application of holographic interferometry to the inspection of HERF stainless steel pressure vessels
Conference
·
OSTI ID:7265489
Holographic interferometry has been demonstrated as a useful technique for inspecting small stainless steel pressure vessels machined from High Energy Rate Forged (HERF) material. This multistep forging process alters the mechanical properties of the material as the part is formed. Errors in the forging process can result in local or uniform reductions in tensile strength. Flaws of this type increase the amount of residual deformation which occurs as a result of pressure testing. Holographic interferometry is well suited to the measurement of the residual deformation because: (1) the deformations of interest are very small, and (2) the entire surface of the vessel must be inspected. Holographic interferograms of good-quality and poor-quality forgings are presented together with a set of accept-reject criteria to be used in a routine testing environment.
- Research Organization:
- Sandia Labs., Livermore, Calif. (USA)
- DOE Contract Number:
- AT(29-1)-789
- OSTI ID:
- 7265489
- Report Number(s):
- SAND-76-8656; CONF-760914-6
- Country of Publication:
- United States
- Language:
- English
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