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Failure induced by instability in structural composites under longitudinal compression

Grant number: 19/00917-8
Support type:Regular Research Grants
Duration: September 01, 2019 - August 31, 2020
Field of knowledge:Engineering - Aerospace Engineering
Cooperation agreement: Consortium of Alberta, Laval, Dalhousie and Ottawa (CALDO)
Mobility Program: SPRINT - Projetos de pesquisa - Mobilidade
Principal Investigator:Alfredo Rocha de Faria
Grantee:Alfredo Rocha de Faria
Principal investigator abroad: John Montesano
Institution abroad: University of Waterloo, Canada
Home Institution: Divisão de Engenharia Mecânica (IEM). Instituto Tecnológico de Aeronáutica (ITA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil
Partner institutions: University of Waterloo
Associated research grant:18/09251-0 - Design for residual stress (Drs) on gears manufacturing: industry 4.0 approach, AP.R

Abstract

Many types of loadings encountered in practical applications may lead to compressive stresses in the longitudinal direction. Therefore, the need to investigate potential failure due to longitudinal compressive stresses is recurring by itself. Moreover, ultimate loads can only be reliably predicted if failure models are able to pinpoint the onset of the damage initiation and its subsequent propagation up to catastrophic failure.It is expected that this initial research proposal will stimulate a creative and productive environment to foster further collaborative projects in the areas of damage tolerance, high and low speed impact, compressive failure modeling, ply-level modeling, strain rate effects and dynamic testing using the facilities available in ITA (drop test tower, split Hopkinson bar and high speed camera) and the University of Waterloo (compressive, combined load and fatigue testing machines).In the long term the ambitious objective is to expand research of damage tolerance models to include thermoplastic based composites, a trend that seems to lead to almost unlimited possibilities in terms of cost savings and performance enhancement of composite aerostructures. (AU)