Rugosidade da superfície e dureza Shore-D de seis madeiras tropicais

Autores

DOI:

https://doi.org/10.29352/mill0223e.41753

Palavras-chave:

madeira tropical; rugosidade superficial; dureza Shore-D; lixagem; propriedades do material

Resumo

Introdução: Este estudo investiga as características da dureza Shore-D e da rugosidade superficial de seis espécies de madeiras tropicais: Canelo (Nectandra spp.), Limbali (Gibertiodendron dewevrei), Difou (Morus mesozygia), Curupay (Anadenanthera macrocarpa), Ebiara (Berlinia bracteosa) e Zwarte kabbes (Diplotropis martiusii), com o intuito de avaliar sua adequação para aplicações de alto desempenho.

Objetivo: Avaliar como o tipo de madeira e o processo de lixagem influenciam as propriedades mecânicas e a qualidade da superfície das madeiras tropicais selecionadas.

Métodos: As amostras foram acondicionadas e submetidas a lixamento com lixas de diferentes granulometrias (80, 100, 120, 150 e 180). Foram avaliados os parâmetros de rugosidade superficial Ra, Rq e Rz, além da dureza Shore-D. Os dados foram analisados estatisticamente por meio de ANOVA e teste de Duncan.

Resultados: A análise estatística revelou que a granulometria da lixa influenciou significativamente a rugosidade superficial (p < 0,001), sendo que lixas mais finas resultaram em superfícies mais lisas. O tipo de madeira também teve efeito significativo sobre a rugosidade e a dureza. A lixagem apresentou o maior impacto nos parâmetros Ra, Rq e Rz. A madeira Ebiara apresentou a superfície mais lisa, enquanto a Curupay demonstrou a maior dureza (74,65).

Conclusão: A rugosidade superficial é influenciada principalmente pelo grão da lixa, enquanto a dureza é determinada pela espécie da madeira. Os resultados destacam a importância de adaptar os procedimentos de lixagem ao tipo de madeira, com o objetivo de otimizar a qualidade da superfície e o desempenho mecânico em aplicações industriais e decorativas.

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Publicado

2026-06-23

Como Citar

Ayata, U., Domingos, I., Ferreira, J., Cruz-Lopes, L., & Esteves, B. (2026). Rugosidade da superfície e dureza Shore-D de seis madeiras tropicais. Millenium - Journal of Education, Technologies, and Health, 2(23e), e41753. https://doi.org/10.29352/mill0223e.41753

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Engenharias, tecnologia, gestão e turismo