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

Authors :
Acharya P
Ebrahimian H
Moustafa MA
Source :
Polymers [Polymers (Basel)] 2022 May 04; Vol. 14 (9). Date of Electronic Publication: 2022 May 04.
Publication Year :
2022

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 retention under cyclic and fatigue tensile loading, suggesting that polyureas have promising mechanical properties for potential structural applications.

Details

Language :
English
ISSN :
2073-4360
Volume :
14
Issue :
9
Database :
MEDLINE
Journal :
Polymers
Publication Type :
Academic Journal
Accession number :
35567047
Full Text :
https://doi.org/10.3390/polym14091878