Strain sensing behavior of multifunctional polyaniline-based thermoset polymer under static loading conditions

Sukanta Das, Vipin Kumar, Tomohiro Yokozeki

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In this paper, a multifunctional thermoset polymer composite consisting of polyaniline, dodecylbenzene-sulfonic acid and divinylbenzene has been demonstrated as a strain sensor under different static loading conditions. Four-probe electrical conductivity measurement method was adopted to measure the change in electrical resistance of the material with respect to the applied static load. A systematic study was conducted to estimate the working range of the sensor considering the hysteresis effect, relaxation behavior and long cyclic load. A strain rate change effect and thermal stability study was also conducted to characterize the sensor. Moreover, gauge factor was calculated and its stability over the working range was studied. The results show that the sensor is suitable for low strain measurements, in a range of 0.025%–0.3% strain. These responses qualify this polymer system as a multifunctional material. The multi-functionality of the conductive adhesive layer has the potential to provide in-situ structural health monitoring in composite structures under loading conditions.

Original languageEnglish
Article number105916
JournalPolymer Testing
Volume77
DOIs
StatePublished - Aug 2019

Funding

The authors acknowledge Japan Society for the Promotion of Science for the financial support of this project (Grant-in-Aid for Scientific Research, 16H02424 ). The authors are thankful to Santwana Pati for the language check in the manuscript. Dr. Vipin Kumar was supported by the U.S. Department of Energy , Office of Energy Efficiency and Renewable Energy , Advanced Manufacturing Office , under contract DE-AC05-00OR22725 with UT-Battelle , LLC .

Keywords

  • Conductive polymer
  • Piezoresistive sensor
  • Polyaniline (PANI)
  • Strain sensor

Fingerprint

Dive into the research topics of 'Strain sensing behavior of multifunctional polyaniline-based thermoset polymer under static loading conditions'. Together they form a unique fingerprint.

Cite this