Banca de DEFESA: RODRIGO BARBOSA DE ARAUJO

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : RODRIGO BARBOSA DE ARAUJO
DATE: 30/01/2023
TIME: 10:00
LOCAL: https://meet.google.com/kip-ggds-pgp
TITLE:

ANÁLISE DAS ESTRATÉGIAS DE LEVEZA E RESISTÊNCIA PRESENTES NA FIBRA DO AGAVE: Uma proposta de design de materiais biológicos e estruturas bioinspiradas com instrumentos de modelagem paramétrica.

KEY WORDS:

biomimicry; agave; parametric design; digital fabrication; material design; surfboard.

PAGES: 100
BIG AREA: Ciências Sociais Aplicadas
AREA: Desenho Industrial
SUMMARY:

Raw materials are fundamental for the manufacture of artifacts. However, the growing demand to extract finite natural resources contributes significantly to environmental degradation. On the other hand, among the most used vegetable fibers, those of Agave sisalana are an extremely valuable alternative for presenting excellent mechanical and environmental properties. The use of natural materials has been gaining ground for decades, such as the use of agave and other bio-based materials in the manufacture of sustainable surfboards. The agave is an object of study in this investigation, thus, we seek to understand why this natural system is light and resistant, what are the biological strategies of lightness and resistance of the structure of cell walls. A bioinspired approach is believed to be one that favors eco-performance research and metrics over creating bioinspired shapes and materials. The investigation is guided by the Biomimicry Thinking methodological approach of the Instituto de Biomimetica 3.8, having the Principles of Life as sustainable design guidelines. Through analogy and transfer-of-function methods, biological strategies are emulated into design principles aided by parametric modeling processes. In particular, this proposal aims at the development of algorithms to generate light and resistant objects with their inner cores composed of voronoi diagrams, through the use of computational strategies to create bioinspired structures in a generic concept of lightness and resistance. Two more codes were also developed with the same approach and application in the development of surfboards and fins, which included an evolutionary algorithm for selecting optimized pattern options and another parameter for
verifying the integrity of artifact structures. In this way, bioinspiration was worked on in the lightness and resistance of agave with biological research, parametric modeling processes and digital fabrication for the generation of prototypes and study models. In this way, it was possible to carry out emulations of agave strategies in terms of experimentation with structures and materials. It also explores the potential application of fibers with the development of composites with biologically-based matrices, with verification of mechanical properties in flexion and tensile tests.

COMMITTEE MEMBERS:
Externa à Instituição - BÁRBARA RANGEL CARVALHO - FEUP
Externo à Instituição - MARIVALDO WAGNER SOUSA SILVA - UFPB
Externa ao Programa - 1836260 - EMILIA CRISTINA PEREIRA DE ARRUDA - nullExterno à Instituição - ITAMAR FERREIRA DA SILVA - UFCG
Presidente - 1351969 - NEY DE BRITO DANTAS