Journal Published Online: 19 April 2018
Volume 47, Issue 2

Mechanical Behavior of a PBX Substitute Material under Static and Dynamic Loading

CODEN: JTEVAB

Abstract

A polymer-bonded explosive substitute material (PBX) composed of sugar granules and polymer binder was fabricated with a weight proportion of 90:10. Static Brazilian tests accompanied by high-speed photography, digital image correlation (DIC) technology, and dynamic mechanical analysis (DMA) were carried out. The tensile stress-strain relation is quasi-linear until failure with a tensile strength of about 0.89 MPa, elastic modulus of 35 MPa, and Poisson’s ratio of 0.392. Microscopically, interfacial debonding and intergranular fractures are the main mechanisms of damage. By DMA, the storage modulus and tan δ show a strong dependence on temperature and less dependence on frequency; the glass transition temperature is found to be about 50°C. These results are helpful for understanding the behavior of PBX under tensile and dynamic loading.

Author Information

Chen, Lin
Department of Materials Science and Engineering, Peking University, Haidian District, Beijing, China
Han, Dong
Department of Materials Science and Engineering, Peking University, Haidian District, Beijing, China
Bai, Shu-Lin
Department of Materials Science and Engineering, Peking University, Haidian District, Beijing, China
Zhao, Feng
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan, China
Li, Ke-Wu
Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, Sichuan, China
Chen, Jian-Kang
Department of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, Zhejiang, China
Pages: 11
Price: $25.00
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Details
Stock #: JTE20170300
ISSN: 0090-3973
DOI: 10.1520/JTE20170300