On the mechanical properties of atomic and 3D printed zeolite-templated carbon nanotube networks

Autor(es):Mostrar menos -

Ambekar, Rushikesh S. ^[1] ; Oliveira, Eliezer F. ^{[2, 3, 4]} ; Kushwaha, Brijesh ^[1] ; Pal, Varinder ^[1] ; Machado, Leonardo D. ^[5] ; Sajadi, Seyed Mohammad ^[2] ; Baughman, Ray H. ^[6] ; Ajayan, Pulickel M. ^[2] ; Roy, Ajit K. ^[7] ; Galvao, Douglas S. ^{[3, 4]} ; Tiwary, Chandra S. ^{[2, 1]}

Afiliação do(s) autor(es)

^[1] Indian Inst Technol Kharagpur, Met & Mat Engn, Kharagpur 382355, W Bengal - India

^[2] Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 - USA

^[3] State Univ Campinas UNICAMP, Appl Phys Dept, Campinas, SP - Brazil

^[4] State Univ Campinas UNICAMP, Ctr Computat Engn & Sci CCES, Campinas, SP - Brazil

^[5] Fed Univ Rio Grande Norte UFRN, Dept Theoret & Expt Phys, Natal, RN - Brazil

^[6] Univ Texas Dallas, Alan G MacDiarmid NanoTech Inst, Dallas, TX 75080 - USA

^[7] US Air Force, Mat & Mfg Directorate, Res Lab, Wright Patterson AFB, OH 45433 - USA

• Tipo de documento: Artigo Científico
• Fonte: ADDITIVE MANUFACTURING; v. 37, JAN 2021.
• Citações Web of Science: 7

Resumo

Specific strength (strength/density) is a crucial factor while designing high load-bearing structures for aerospace and defense applications. The strength of the material can be enhanced by blending it with high strength components and/or fillers, but both options have limitations, such as that the materials can still fail due to poor filler and matrix interactions. Therefore, there is a great interest in enhancing the strength of materials by playing with topology/geometry. In this work, we have investigated the mechanical properties of zeolite-templated carbon nanotube networks (CNTnets). Atomic models were used to generate macro models that were 3D printed. The mechanical properties of CNTnets were investigated through fully atomistic molecular dynamics simulations and load-bearing tests. Our results show that several aspects of mechanical behavior proved to be scale-independent. The 3D printed structures were able to support high compressive loads without structural failure. Such complex architectures can be exploited for ultralight aerospace and automotive parts. (AU)

• Processo FAPESP: 13/08293-7 - CECC - Centro de Engenharia e Ciências Computacionais
• Beneficiário: Munir Salomao Skaf
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 16/18499-0 - Investigação de propriedades estruturais, mecânicas e funcionais de nanoestruturas de carbono
• Beneficiário: Eliezer Fernando de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 19/07157-9 - Projetando novas estruturas 3d a partir de modelos de zeólitas para aplicações em impressão 3d
• Beneficiário: Eliezer Fernando de Oliveira
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado