Mechanical behavior of polytetrafluoroethylene (PTFE) in tensile and compressive tests at different strain rates

• Grant number: 12/10319-1
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: July 01, 2012
• End date: December 31, 2013
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal Investigator: Rodrigo Bresciani Canto
• Grantee: Vinicius Fiocco Sciuti
• Host Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil
• Associated scholarship(s): 12/25374-8 - Modeling of mechanical behavior of PTFE, BE.EP.IC

Abstract

The aim of this research project is the characterization of the mechanical behavior of polytetrafluoroethylene (PTFE) in tensile and compressive tests at different strain rates. This study is part of a larger scientific project that aims to develop theoretical models for the simulation of the PTFE processing (compaction and sintering) and its in-service mechanical behavior, supported by an international cooperation program (Capes-Cofecub 641-09) among researchers from LMT- Cachan (France), EESC-USP and Dema-UFSCar. Uniaxial tensile and CT (compact tension) specimens will be prepared under controlled conditions of isostatic compaction (in multiple steps) and sintering. This type of processing allows obtaining an isotropic material with a reduced number of defects (voids, macro, and microcracks). Uniaxial tensile and compressive mechanical tests at different strain rates will be performed using the digital image correlation technique (DIC). The results will be used to characterize the mechanical behavior at the specified conditions and eventually also to identify a model to be used for in-service numerical simulation. Finally, some mechanical properties evaluated will be used for the ASTM-E1820 standard application, that measures the fracture toughness, of other research in development.(AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SCIUTI, VINICIUS FIOCCO; MELO, CAIUA CALDEIRA; CANTO, LEONARDO BRESCIANI; CANTO, RODRIGO BRESCIANI. Influence of Surface Crystalline Structures on DSC Analysis of PTFE. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 20, n. 5, p. 1350-1359, SEP-OCT 2017. (12/25374-8, 13/00256-5, 12/10319-1, 10/20925-0)

SCIUTI, VINICIUS FIOCCO; MELO, CAIUA CALDEIRA; CANTO, LEONARDO BRESCIANI; CANTO, RODRIGO BRESCIANI. Influence of Surface Crystalline Structures on DSC Analysis of PTFE. MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS, v. 20, n. 5, p. 10-pg., 2017-09-01. (13/00256-5, 12/10319-1, 12/25374-8, 10/20925-0)

PATRÍCIA GIUNCHETTI STRABELLI; VINICIUS FIOCCO SCIUTI; FERNANDA SILVEIRA MONTILHA; LEONARDO BRESCIANI CANTO; RODRIGO BRESCIANI CANTO. Influência de variáveis de sinterização na microestrutura de peças de PTFE moldadas por prensagem isostática. POLIMEROS-CIENCIA E TECNOLOGIA, v. 24, n. 5, p. 612-619, 2014-09-30. (12/10319-1, 12/10317-9)