Behavior Study of Commercial Polyurea under Monotonic, Rate Dependent, Cyclic and Fatigue Tensile Loading for Potential Structural Applications

Pawan Acharya, Hamed Ebrahimian, Mohamed A. Moustafa

Research output: Contribution to journalArticlepeer-review

Abstract

Understanding material behavior is key to discovering innovative applications in any field. Regardless of the exciting mechanical properties of polyurea, there has been a limited effort in studying the use of polyurea for structural retrofit and strengthening applications. This study aims to understand the behavior of polyurea under different tensile loading conditions to provide critical information towards enabling the future use of polyurea in structural applications. Several standard coupons are tested under various tensile loading conditions to understand the mechanical behavior of eight different commercial polyureas. The study provides the full stress–strain characteristic curves that can be used for constitutive modeling purposes. The results show that polyurea has a wide range of properties from low strength flexible nature to high strength rigid nature. All tested polyureas displayed some level of rate dependency, i.e., ultimate strength is a function of loading rates. The high-strength polyureas tested only show slight rate dependency and good strength re-tention under cyclic and fatigue tensile loading, suggesting that polyureas have promising mechanical properties for potential structural applications.

Original languageEnglish (US)
Article number1878
JournalPolymers
Volume14
Issue number9
DOIs
StatePublished - May 1 2022

Keywords

  • cyclic loading
  • fatigue loading
  • polyurea
  • rate dependent loading
  • structural polyurea
  • tensile loading

ASJC Scopus subject areas

  • General Chemistry
  • Polymers and Plastics

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