Predicting X-Rays for Dynamic Flaw Detection in Solid Rockets * Sverdrup Technology, Incorporated/AEDC Group Arnold Engineering Development Center Arnold Air Force Base, Tennessee

Format:

Conference/Event

Author/Creator:

Frederick, R. A., author.

Conference Name:

Aerospace Atlantic Conference & Exposition (1991-04-22 : Dayton, Ohio, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

The principal objective of this study was to evaluate the potential of real-time radiography as a diagnostic tool for measuring propellant crack propagation speed. The scope addressed either a non-propagating or a propagating axial bore crack in a 6-in.-diam solid-propellant motor. Simulations of X-ray emissions from a low-energy source, a model of propellant burn recession, and analysis of the simulated images provided the basis of the results. The complete simulation was performed on an IBM RISC-based workstation and the resulting images were evaluated using an image processor. The results show that the transmitted X-ray intensity profiles can be analyzed to determine the velocity of the crack tip during motor operation. A crack that was modeled to propagate at 5.0 in./sec was "measured" to within ± 1.0 inches/sec using the simulated data. The simulation included the effects of finite pixel resolution and finite (8-bit) intensity digitization

Notes:

Vendor supplied data

Publisher Number:

911152

Access Restriction:

Restricted for use by site license