Energy absorption mechanism of thermoplastic fiber-reinforced plastics under impact loading using split-hopkinson pressure-bar method

Ayuta Nambu, Shogo Adachi, Tomoya Yabu, Yuji Ishitsuka, Atsushi Hosoi, Hiroyuki Kawada

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

Abstract

The energy absorbing performance in the progressive failure of glass long-fiber-reinforced polyamide was evaluated by using the split Hopkinson pressure-bar method. An impact compression test of glass long-fiber-reinforced polyamide was performed from –30 °C to 90 °C, and the temperature-independent energy absorbing performance was confirmed only for the progressive failure mode. To clarify this phenomenon, compression tests, interlaminar compressive shear tests and mode-I fracture-toughness tests were conducted under static and impact conditions. The compression strength and the shear strength of all specimens decreased with an increase in temperature. The toughness improved with temperature. In addition to the mechanical tests, failure-mode analysis was performed by using a three-dimensional X-ray microscope to clarify the absorbing mechanism. From the above, it was concluded that the temperature-independent energy absorbing performance results from a balance of these mechanical properties against the temperature change.

Original languageEnglish
Title of host publicationPolymer Science and Engineering
EditorsKatsuyuki Kida
PublisherTrans Tech Publications Ltd
Pages47-52
Number of pages6
ISBN (Print)9783035716382
DOIs
Publication statusPublished - 2020
Event3rd International Conference on Composite Material, Polymer Science and Engineering, CMPSE 2019 - Bangkok, Thailand
Duration: 2019 Oct 242019 Oct 25

Publication series

NameKey Engineering Materials
Volume858 KEM
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Conference

Conference3rd International Conference on Composite Material, Polymer Science and Engineering, CMPSE 2019
CountryThailand
CityBangkok
Period19/10/2419/10/25

Keywords

  • Energy absorption
  • Fiber-reinforced thermoplastics
  • Impact properties
  • Injection molding
  • Split Hopkinson pressure-bar apparatus

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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