Authors:

Jack Martin

Date Created:

Not specified

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Professor:

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About Paper:

With the use of Vibration Assisted Printing (VAP), printing can be done at much higher speeds in more complex geometries that could enhance the range of tailorability among high solids loading materials. This project studied different inline and offset print geometries at two infill percentages to understand the impact on detonation shock front velocity using an RDX-based explosive. Four different print orientations-0° inline, 0° offset, 45° inline, and 45° crosshatch -were analyzed. Detonation testing was performed on all the samples and the tests were imaged with ultra highspeed imaging to determine the effects of printing on detonation propagation. The test results showed jetting behavior of the shock front specifically along channels (inline) in between RDX explosive print beads that inhibited detonation propagation. This jetting was not observed in cross-grain samples. Gaps in material (low print infill) combined with the orientation of the print led to more polarizing detonation velocity.

Source:

Purdue University / 2023

Topics:

No topics listed

Co-authors:

Jack Martin