A microscopic study on local strain rate sensitivity of polypropylene syntactic foam with microballoons

Enyang Wang, Masaki Omiya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The local strain rate sensitivity of polypropylene syntactic foams with polymer microballoons in the relative density from 0.5 to 0.8 is studied at the nominal strain rate ranged from 10-1 to 102 s -1. Johnson-Cook law is employed to show the viscoelastic properties of polymer syntactic foams. A microscopic investigation reveals that the strain rate sensitivity and the effect of localised deformations can be observed at the higher strain rate (50-100 s-1). The local deformation mechanism is different in different strain rate regimes due to the effect of local strain rate. At strain rates below 10 s-1, cell-face stretching is the dominant deformation mechanism. At strain rates from 50 s-1 to 100 s-1, cell-face stretching and cell-edge bending are the main deformation mechanism.

Original languageEnglish
Title of host publicationMaterials Science and Engineering Applications
Pages1280-1284
Number of pages5
DOIs
Publication statusPublished - 2011 Jan 11
Event2011 International Conference on Materials Science and Engineering Applications, ICMSEA 2011 - Xi'an, China
Duration: 2011 Jan 152011 Jan 16

Publication series

NameAdvanced Materials Research
Volume160-162
ISSN (Print)1022-6680

Other

Other2011 International Conference on Materials Science and Engineering Applications, ICMSEA 2011
CountryChina
CityXi'an
Period11/1/1511/1/16

Keywords

  • Cellular microstructure
  • Closed-cell
  • Density
  • Polymer
  • Relative elastic modulus
  • Relative yield stress
  • Strain rate
  • Syntactic foam

ASJC Scopus subject areas

  • Engineering(all)

Fingerprint Dive into the research topics of 'A microscopic study on local strain rate sensitivity of polypropylene syntactic foam with microballoons'. Together they form a unique fingerprint.

  • Cite this

    Wang, E., & Omiya, M. (2011). A microscopic study on local strain rate sensitivity of polypropylene syntactic foam with microballoons. In Materials Science and Engineering Applications (pp. 1280-1284). (Advanced Materials Research; Vol. 160-162). https://doi.org/10.4028/www.scientific.net/AMR.160-162.1280