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

Jubera García, Rafael; Ridruejo Rodríguez, Álvaro; Gonzalez Martínez, Carlos Daniel y 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.mechmat2014.03.007.

Descripción

Título: Mechanical behavior and deformation micromechanisms of polypropylene nonwoven fabrics as a function of temperature and strain rate
Autor/es:
  • Jubera García, Rafael
  • Ridruejo Rodríguez, Álvaro
  • Gonzalez Martínez, Carlos Daniel
  • Llorca Martinez, Francisco Javier
Tipo de Documento: Artículo
Título de Revista/Publicación: Mechanics of Materials
Fecha: Julio 2014
Volumen: 74
Materias:
Palabras Clave Informales: nonwoven fabrics, polypropylene, mechanical properties, fracture micromechanisms, strain rate, temperature
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 35601
Identificador DC: http://oa.upm.es/35601/
Identificador OAI: oai:oa.upm.es:35601
Identificador DOI: 10.1016/j.mechmat2014.03.007
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0167663614000507
Depositado por: Memoria Investigacion
Depositado el: 07 Jul 2015 12:25
Ultima Modificación: 01 Ago 2016 22:30
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