Mechanical behavior and deformation micromechanisms of polypropylene nonwoven fabrics as a function of temperature and strain rate

Jubera García, Rafael and Ridruejo Rodríguez, Álvaro and Gonzalez Martínez, Carlos Daniel and Llorca Martinez, Francisco Javier (2014). Mechanical behavior and deformation micromechanisms of polypropylene nonwoven fabrics as a function of temperature and strain rate. "Mechanics of Materials", v. 74 ; pp. 14-25. ISSN 0167-6636. https://doi.org/10.1016/j.mechmat.2014.03.007.

Description

Title: Mechanical behavior and deformation micromechanisms of polypropylene nonwoven fabrics as a function of temperature and strain rate
Author/s:
  • Jubera García, Rafael
  • Ridruejo Rodríguez, Álvaro
  • Gonzalez Martínez, Carlos Daniel
  • Llorca Martinez, Francisco Javier
Item Type: Article
Título de Revista/Publicación: Mechanics of Materials
Date: July 2014
ISSN: 0167-6636
Volume: 74
Subjects:
Freetext Keywords: nonwoven fabrics, polypropylene, mechanical properties, fracture micromechanisms, strain rate, temperature
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The mechanical behavior and the deformation and failure micromechanisms of a thermally-bonded polypropylene nonwoven fabric were studied as a function of temperature and strain rate. Mechanical tests were carried out from 248 K (below the glass transition temperature) up to 383 K at strain rates in the range ≈10−3 s−1 to 10−1 s−1. In addition, individual fibers extracted from the nonwoven fabric were tested under the same conditions. Micromechanisms of deformation and failure at the fiber level were ascertained by means of mechanical tests within the scanning electron microscope while the strain distribution at the macroscopic level upon loading was determined by means of digital image correlation. It was found that the nonwoven behavior was mainly controlled by the properties of the fibers and of the interfiber bonds. Fiber properties determined the nonlinear behavior before the peak load while the interfiber bonds controlled the localization of damage after the peak load. The influence of these properties on the strength, ductility and energy absorbed during deformation is discussed from the experimental observations.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainMAT2012-37552UnspecifiedUnspecifiedUnspecified

More information

Item ID: 35601
DC Identifier: http://oa.upm.es/35601/
OAI Identifier: oai:oa.upm.es:35601
DOI: 10.1016/j.mechmat.2014.03.007
Official URL: http://www.sciencedirect.com/science/article/pii/S0167663614000507
Deposited by: Memoria Investigacion
Deposited on: 07 Jul 2015 12:25
Last Modified: 21 May 2019 09:54
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