Experimental Determination of the Dynamic Initiation Fracture Toughness of Composite Modified Double base Propellant

DOI

10.2991/aiie-15.2015.119How to use a DOI?

Keywords

composite modified double base propellant; initiation fracture toughness; loading rate

Abstract

This paper presents a detailed experimental procedure for determining the dynamic initiation fracture toughness of Composite Modified Double-Base (CMDB) propellant under dynamic loading. The Cracked Straight Through Flatten Brazilian Disc (CSTFBD) specimens were conducted using the split Hopkinson pressure bar SHPB system under high loading rates. Experimental setup, data acquisition and interpretation were described in details. The strain gauge was adopted to monitor the time-to-fracture accurately. We interpreted the detailed procedure of getting the time-to-fracture, as well as confirmed all the propellant specimens were in a state of dynamic force equilibrium. Experimental results show that the CMDB fracture initiation toughness depended on loading rate. The pattern of destroyed sample indicated the solid propellant material was evident brittle fracture under dynamic loads.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - W.Q. Wang
AU  - X. Chen
AU  - J. Zheng
AU  - J.S. Xu
AU  - C.X. Sun
PY  - 2015/07
DA  - 2015/07
TI  - Experimental Determination of the Dynamic Initiation Fracture Toughness of Composite Modified Double base Propellant
BT  - Proceedings of the 2015 International Conference on Artificial Intelligence and Industrial Engineering
PB  - Atlantis Press
SP  - 437
EP  - 440
SN  - 1951-6851
UR  - https://doi.org/10.2991/aiie-15.2015.119
DO  - 10.2991/aiie-15.2015.119
ID  - Wang2015/07
ER  -