Prediction of strain rate sensitivity of polymers by integral transform of DMA data

Steven Eric Zeltmann, Chrys Koomson, Nikhil Gupta

Research output: Contribution to conferencePaper

Abstract

Interest in designing lightweight structures has resulted in the adoption of polymers and particulate composites in numerous structural applications. Weight saving is extremely beneficial both in terms of increased payload and reduced fuel consumption in transportation sector. Major challenges to the adoption of composite materials for such applications include unavailability of predictive models for high strain rate response and creep life. Dynamic mechanical analysis (DMA) is a widely used technique in polymer science for determining transition temperatures and activation energies. However, DMA results are not directly applicable to the design of structures because only frequency-domain properties are reported from those measurements. This work develops a transformation method for converting the DMA data from frequency to the time domain by appropriate integral relations from viscoelasticity theory. The material relaxation function can then be determined in order to predict the response over varying strain rates and loading conditions. The procedure is demonstrated for three material systems: vinyl ester, polycarbonate and high density polyethylene/fly ash composites. Close matching between the DMA predictions and the results of separate tensile tests and literature data is observed at a wide range of strain rates.

Original languageEnglish (US)
StatePublished - Jan 1 2017
Event21st International Conference on Composite Materials, ICCM 2017 - Xi'an, China
Duration: Aug 20 2017Aug 25 2017

Other

Other21st International Conference on Composite Materials, ICCM 2017
CountryChina
CityXi'an
Period8/20/178/25/17

Fingerprint

Dynamic mechanical analysis
Strain rate
Polymers
polycarbonate
Composite materials
Coal Ash
Viscoelasticity
Polyethylene
High density polyethylenes
Polycarbonates
Fly ash
Fuel consumption
Superconducting transition temperature
Esters
Creep
Activation energy

Keywords

  • Dynamic mechanical analysis
  • Strain rate sensitivity
  • Viscoelasticity

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

Cite this

Zeltmann, S. E., Koomson, C., & Gupta, N. (2017). Prediction of strain rate sensitivity of polymers by integral transform of DMA data. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.

Prediction of strain rate sensitivity of polymers by integral transform of DMA data. / Zeltmann, Steven Eric; Koomson, Chrys; Gupta, Nikhil.

2017. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.

Research output: Contribution to conferencePaper

Zeltmann, SE, Koomson, C & Gupta, N 2017, 'Prediction of strain rate sensitivity of polymers by integral transform of DMA data' Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China, 8/20/17 - 8/25/17, .
Zeltmann SE, Koomson C, Gupta N. Prediction of strain rate sensitivity of polymers by integral transform of DMA data. 2017. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.
Zeltmann, Steven Eric ; Koomson, Chrys ; Gupta, Nikhil. / Prediction of strain rate sensitivity of polymers by integral transform of DMA data. Paper presented at 21st International Conference on Composite Materials, ICCM 2017, Xi'an, China.
@conference{aa445057c1e34ca280acff1ac69d52c7,
title = "Prediction of strain rate sensitivity of polymers by integral transform of DMA data",
abstract = "Interest in designing lightweight structures has resulted in the adoption of polymers and particulate composites in numerous structural applications. Weight saving is extremely beneficial both in terms of increased payload and reduced fuel consumption in transportation sector. Major challenges to the adoption of composite materials for such applications include unavailability of predictive models for high strain rate response and creep life. Dynamic mechanical analysis (DMA) is a widely used technique in polymer science for determining transition temperatures and activation energies. However, DMA results are not directly applicable to the design of structures because only frequency-domain properties are reported from those measurements. This work develops a transformation method for converting the DMA data from frequency to the time domain by appropriate integral relations from viscoelasticity theory. The material relaxation function can then be determined in order to predict the response over varying strain rates and loading conditions. The procedure is demonstrated for three material systems: vinyl ester, polycarbonate and high density polyethylene/fly ash composites. Close matching between the DMA predictions and the results of separate tensile tests and literature data is observed at a wide range of strain rates.",
keywords = "Dynamic mechanical analysis, Strain rate sensitivity, Viscoelasticity",
author = "Zeltmann, {Steven Eric} and Chrys Koomson and Nikhil Gupta",
year = "2017",
month = "1",
day = "1",
language = "English (US)",
note = "21st International Conference on Composite Materials, ICCM 2017 ; Conference date: 20-08-2017 Through 25-08-2017",

}

TY - CONF

T1 - Prediction of strain rate sensitivity of polymers by integral transform of DMA data

AU - Zeltmann, Steven Eric

AU - Koomson, Chrys

AU - Gupta, Nikhil

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Interest in designing lightweight structures has resulted in the adoption of polymers and particulate composites in numerous structural applications. Weight saving is extremely beneficial both in terms of increased payload and reduced fuel consumption in transportation sector. Major challenges to the adoption of composite materials for such applications include unavailability of predictive models for high strain rate response and creep life. Dynamic mechanical analysis (DMA) is a widely used technique in polymer science for determining transition temperatures and activation energies. However, DMA results are not directly applicable to the design of structures because only frequency-domain properties are reported from those measurements. This work develops a transformation method for converting the DMA data from frequency to the time domain by appropriate integral relations from viscoelasticity theory. The material relaxation function can then be determined in order to predict the response over varying strain rates and loading conditions. The procedure is demonstrated for three material systems: vinyl ester, polycarbonate and high density polyethylene/fly ash composites. Close matching between the DMA predictions and the results of separate tensile tests and literature data is observed at a wide range of strain rates.

AB - Interest in designing lightweight structures has resulted in the adoption of polymers and particulate composites in numerous structural applications. Weight saving is extremely beneficial both in terms of increased payload and reduced fuel consumption in transportation sector. Major challenges to the adoption of composite materials for such applications include unavailability of predictive models for high strain rate response and creep life. Dynamic mechanical analysis (DMA) is a widely used technique in polymer science for determining transition temperatures and activation energies. However, DMA results are not directly applicable to the design of structures because only frequency-domain properties are reported from those measurements. This work develops a transformation method for converting the DMA data from frequency to the time domain by appropriate integral relations from viscoelasticity theory. The material relaxation function can then be determined in order to predict the response over varying strain rates and loading conditions. The procedure is demonstrated for three material systems: vinyl ester, polycarbonate and high density polyethylene/fly ash composites. Close matching between the DMA predictions and the results of separate tensile tests and literature data is observed at a wide range of strain rates.

KW - Dynamic mechanical analysis

KW - Strain rate sensitivity

KW - Viscoelasticity

UR - http://www.scopus.com/inward/record.url?scp=85053147611&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85053147611&partnerID=8YFLogxK

M3 - Paper

ER -