4.6 Article

Sound Wave Absorption Coefficient and Sound Velocity in Thermally Modified Wood

Related references

Note: Only part of the references are listed.
Article Green & Sustainable Science & Technology

A scalable high-porosity wood for sound absorption and thermal insulation

Xinpeng Zhao et al.

Summary: Researchers have developed a sustainable material called "insulwood" that has high porosity, high sound absorption, low thermal conductivity, and high mechanical strength. It is made by removing lignin and hemicelluloses from natural wood using a rapid high-temperature process followed by low-cost ambient drying. Insulwood shows promise as a construction material for improved noise and thermal regulation due to its unique combination of attributes such as renewable source materials, high porosity, high sound absorption, low thermal conductivity, and high mechanical robustness.

NATURE SUSTAINABILITY (2023)

Article Nanoscience & Nanotechnology

Pickering Emulsions Based on Wax and Halloysite Nanotubes: An Ecofriendly Protocol for the Treatment of Archeological Woods

Lorenzo Lisuzzo et al.

Summary: A novel green protocol has been developed for the consolidation and protection of waterlogged archeological woods using wax microparticles, in which halloysite nanotubes (HNTs) based Pickering emulsions were designed. The prepared hybrid systems showed improved mechanical performance and thermal properties, demonstrating potential for the preservation of wooden artworks and shipwrecks.

ACS APPLIED MATERIALS & INTERFACES (2021)

Article Acoustics

Investigation of loose wood chips and sawdust as alternative sustainable sound absorber materials

Ayoub Boubel et al.

Summary: This study experimentally investigated the acoustic absorption of chips and sawdust of red and beechwood, showing different absorption coefficients for various particle sizes in different frequency ranges. Additionally, a novel alternative absorbent panel using redwood particles wrapped in fabric was proposed and demonstrated to have similar intelligibility parameters compared to commercial perforated panels, providing a cost-effective solution for reducing project budgets.

APPLIED ACOUSTICS (2021)

Article Acoustics

Hygrothermal treated paulownia hardwood reveals enhanced sound absorption coefficient: An effective and facile approach

Haradhan Kolya et al.

Summary: Hygrothermal treatment improves the quality of wood and enhances the sound absorption coefficient of hardwood species, making it useful for manufacturing sound absorption boards.

APPLIED ACOUSTICS (2021)

Article Forestry

Air permeability and sound absorption coefficient changes from ultrasonic treatment in a cross section of Malas (Homalium foetidum)

Chun-Won Kang et al.

Summary: The research indicates that ultrasonic treatment significantly increases the gas permeability and improves the sound absorption coefficient of Malas wood.

JOURNAL OF WOOD SCIENCE (2021)

Article Forestry

Swelling kinetics of thermally modified wood

Petr Cermak et al.

Summary: The study on swelling kinetics of native and thermally modified wood showed that thermal modification improved the dimensional stability depending on wood species, anatomical direction, and intensity of treatment. Different wood species, structure, and treatment intensity have an impact on the modification effect.

EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS (2021)

Article Forestry

Restoration of a XVII Century's predella reliquary: From Physico-Chemical Characterization to the Conservation Process

Giuseppina Fiore Bettina et al.

Summary: The study reports the restoration of a XVII century predella reliquary from the church of Madre Maria SS. Assunta in Italy. Scientific methods, including optical and electron microscopy, as well as hyperspectral imaging, were essential in the restoration process. The use of a green nanocomposite glue, with a sustainable approach, was also highlighted in the study.

FORESTS (2021)

Article Materials Science, Composites

Chemical treatment of wood fibers to enhance the sound absorption coefficient of flexible polyurethane composite foams

Hyeon Choe et al.

COMPOSITES SCIENCE AND TECHNOLOGY (2018)

Article Materials Science, Paper & Wood

Improving the Sound Absorption Capacity of Wood by Microwave Treatment

Dong Wang et al.

BioResources (2014)

Article Forestry

Experimental study of wood acoustic absorption characteristics

Jerzy Smardzewski et al.

HOLZFORSCHUNG (2014)