Meso-scale deformation mechanisms of polymer bonded energetic materials under dynamic loading

Suraj Ravindran; Addis Tessema; Addis Kidane; Michael A. Sutton

doi:10.1007/978-3-319-21762-8_53

Meso-scale deformation mechanisms of polymer bonded energetic materials under dynamic loading

Suraj Ravindran, Addis Tessema, Addis Kidane, Michael A. Sutton

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Scopus citations

Abstract

To understand the plastic deformation mechanism of polymer bonded energetic materials, a meso-scale experiment is conducted under dynamic loading. Energetic simulant material with polymer plasticizer are cold pressed using a mold made of stainless steel. An experimental setup is developed to obtain the local strain field at the meso-scale under dynamic loading conditions. The setup consists of a high speed camera with extension tube and microscope objective lens to obtain magnifications ranging from 1× to 50×. A high intensity halogen light source is used for illumination. The field of view for the experiment is 1700 × 690 μm, with a spatial resolution of 4.427 μm/pixel at 100,000 frames/s. Dynamic loading is performed using a split Hopkinson pressure apparatus to obtain a range of strain rates. The strain fields are obtained using digital image correlation technique. To facilitate for the digital image correlation technique, the specimens are speckled using air brush with average speckle size ranging from 12 to 18 μm. Results are presented for the measured strain fields and the associated deformation mechanisms as a function of loading rate.

Original language	English (US)
Title of host publication	Mechanics of Composite and Multifunctional Materials - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics
Editors	Piyush R. Thakre, Carter Ralph, Meredith Silberstein, Raman Singh
Publisher	Springer New York LLC
Pages	451-456
Number of pages	6
ISBN (Print)	9783319217611
DOIs	https://doi.org/10.1007/978-3-319-21762-8_53
State	Published - 2016
Externally published	Yes
Event	SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2015 - Costa Mesa, United States Duration: Jun 8 2015 → Jun 11 2015

Publication series

Name	Conference Proceedings of the Society for Experimental Mechanics Series
Volume	7
ISSN (Print)	2191-5644
ISSN (Electronic)	2191-5652

Conference

Conference	SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2015
Country/Territory	United States
City	Costa Mesa
Period	6/8/15 → 6/11/15

Bibliographical note

Funding Information:
The financial support of Air Force Office of Scientific Research (AFOSR) under Grant No. FA9550-14-1-0209is gratefully acknowledged.

Publisher Copyright:
© The Society for Experimental Mechanics, Inc. 2016.

Keywords

DIC
Dynamic
Meso-scale
Polymer bonded explosive
Strain localization

Publisher link

10.1007/978-3-319-21762-8_53

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Cite this

Ravindran, S., Tessema, A., Kidane, A., & Sutton, M. A. (2016). Meso-scale deformation mechanisms of polymer bonded energetic materials under dynamic loading. In P. R. Thakre, C. Ralph, M. Silberstein, & R. Singh (Eds.), Mechanics of Composite and Multifunctional Materials - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics (pp. 451-456). (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 7). Springer New York LLC. https://doi.org/10.1007/978-3-319-21762-8_53

Meso-scale deformation mechanisms of polymer bonded energetic materials under dynamic loading. / Ravindran, Suraj; Tessema, Addis; Kidane, Addis et al.
Mechanics of Composite and Multifunctional Materials - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics. ed. / Piyush R. Thakre; Carter Ralph; Meredith Silberstein; Raman Singh. Springer New York LLC, 2016. p. 451-456 (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 7).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ravindran, S, Tessema, A, Kidane, A & Sutton, MA 2016, Meso-scale deformation mechanisms of polymer bonded energetic materials under dynamic loading. in PR Thakre, C Ralph, M Silberstein & R Singh (eds), Mechanics of Composite and Multifunctional Materials - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics. Conference Proceedings of the Society for Experimental Mechanics Series, vol. 7, Springer New York LLC, pp. 451-456, SEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2015, Costa Mesa, United States, 6/8/15. https://doi.org/10.1007/978-3-319-21762-8_53

Ravindran S, Tessema A, Kidane A, Sutton MA. Meso-scale deformation mechanisms of polymer bonded energetic materials under dynamic loading. In Thakre PR, Ralph C, Silberstein M, Singh R, editors, Mechanics of Composite and Multifunctional Materials - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics. Springer New York LLC. 2016. p. 451-456. (Conference Proceedings of the Society for Experimental Mechanics Series). doi: 10.1007/978-3-319-21762-8_53

Ravindran, Suraj ; Tessema, Addis ; Kidane, Addis et al. / Meso-scale deformation mechanisms of polymer bonded energetic materials under dynamic loading. Mechanics of Composite and Multifunctional Materials - Proceedings of the 2015 Annual Conference on Experimental and Applied Mechanics. editor / Piyush R. Thakre ; Carter Ralph ; Meredith Silberstein ; Raman Singh. Springer New York LLC, 2016. pp. 451-456 (Conference Proceedings of the Society for Experimental Mechanics Series).

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AB - To understand the plastic deformation mechanism of polymer bonded energetic materials, a meso-scale experiment is conducted under dynamic loading. Energetic simulant material with polymer plasticizer are cold pressed using a mold made of stainless steel. An experimental setup is developed to obtain the local strain field at the meso-scale under dynamic loading conditions. The setup consists of a high speed camera with extension tube and microscope objective lens to obtain magnifications ranging from 1× to 50×. A high intensity halogen light source is used for illumination. The field of view for the experiment is 1700 × 690 μm, with a spatial resolution of 4.427 μm/pixel at 100,000 frames/s. Dynamic loading is performed using a split Hopkinson pressure apparatus to obtain a range of strain rates. The strain fields are obtained using digital image correlation technique. To facilitate for the digital image correlation technique, the specimens are speckled using air brush with average speckle size ranging from 12 to 18 μm. Results are presented for the measured strain fields and the associated deformation mechanisms as a function of loading rate.

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Meso-scale deformation mechanisms of polymer bonded energetic materials under dynamic loading

Abstract

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Bibliographical note

Keywords

Publisher link

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