EFFECT OF HEAT STABILIZATION AND SOLID LUBRICANTS ON HIGH STRAIN RATE RESPONSE OF POLYAMIDE 6

Luis Rafael Miranda Rodriguez, Neel Shah, Aisha S. Haynes, Calvin Lim, Christopher G. Stout, Stephen S. Recchia, Assimina A. Pelegri

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

Abstract

In this research, high strain rate impact testing of polyamide 6 composites (PA6) with different inclusions and processes is performed to assess the material response to increasing impact loads. Testing groups are divided into four categories depending on their inclusions and process: no inclusions, heat stabilized with no inclusions, oil & Molybdenum disulfide (MoS2), and glass fiber solid lubricant. Computational analysis is performed to obtain material properties such as dynamic modulus and stress-strain behavior from Split Hopkinson Pressure Bar (SHPB) tests. Out of the four groups, it was concluded that oil & MoS2 and glass fiber solid lubricant were more capable of maintaining dynamic modulus. In contrast, PA6 without any inclusions experienced a rapid decrease in dynamic modulus with increasing strain rate. Microscopic imagery is taken to evaluate crack formation in samples and sample deformation. Multiple side and edge cracks were developed from the specimens starting from a strain rate of 1900s-1; however, shattering of specimens was not experienced until above 2300s-1 strain rates were achieved. It is concluded that tested specimens experienced hardening trends at higher testing pressures and strain rates. A computational analysis is underway to establish the effect of heat stabilization and lubricant inclusions in PA6 strain rate-dependent mechanical response.

Original languageEnglish (US)
Title of host publicationMechanics of Solids, Structures, and Fluids; Micro- and Nano- Systems Engineering and Packaging
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791885680
DOIs
StatePublished - 2021
Externally publishedYes
EventASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021 - Virtual, Online
Duration: Nov 1 2021Nov 5 2021

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume12

Conference

ConferenceASME 2021 International Mechanical Engineering Congress and Exposition, IMECE 2021
CityVirtual, Online
Period11/1/2111/5/21

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Keywords

  • Dynamic loading
  • Glass fibers
  • Heat stabilization
  • Polyamide 6
  • Solid lubricants
  • Split Hopkinson pressure bar
  • Strain rate

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