Assessment of sound quality: Australian native hardwood species for guitar fretboard production

Shirmohammadi, Maryam; Faircloth, Adam; Redman, Adam

doi:10.1007/s00107-020-01631-9

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…The importance of the supports or boundary conditions (BCs) has been stressed by many when the material properties are of interest (Shirmohammadi et al 2021). After obtaining all the frequency data using a data acquisition tool (DAQ, sound & vibration module; National Instruments Corporation, Austin, TX, USA), the signal processing was conducted in both LabVIEW (ver.…”

Section: Assessmentmentioning

confidence: 99%

“…The quality factor (Q factor) is determined as the ratio of peak frequency over the bandwidth of the half power point both sides of the peak (Shirmohammadi et al 2020(Shirmohammadi et al , 2021Hansen 2006;Brémaud et al 2012;Sproßmann et al 2017). From vibration data collected, the quality factor was determined using (Ono et al 1983;Brancheriau et al 2006;Aramaki et al 2007;Sproßmann et al 2017),…”

Section: Assessmentmentioning

confidence: 99%

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Assessment of termite damage in cross-laminated timber sections using micro-computed tomography and vibration analysis

Shirmohammadi¹,

Faircloth²,

Chan³

et al. 2023

BioRes

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The durability of engineered wood products (EWPs) is a parameter yet to be fully investigated and understood. This is specifically important for mass timber structures and cross-laminated timber (CLT) panels. The effect of termites and scale of damage on radiata pine sawn boards have been previously investigated. However, the effects of glue line and the layered structure of CLT exposed to termite feeding in the field in Australia have not been studied. A total of 420 CLT specimens with different exposed faces and layer arrangements were exposed to termite attack in the field. Microcomputer tomography and vibration analysis were used to assess sample conditions before and after 20 weeks exposure. The observed changes showed damage patterns within samples where a glue line and different growth ring patterns were present. The termites created continuous damage along the longitudinal cells through the length and width of the samples. The 3D data showed that the edge gap on the face of panels could potentially act as a pathway for termites entering the core or mid-layers of the panel. The vibration frequency values were lower for samples after the termite exposure. The vibration analysis results showed significant effects of sample direction exposed to termite attack, and percentage of mass loss had significant effects on internal friction and damping values determined.

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Section: Assessmentmentioning

confidence: 99%

Section: Assessmentmentioning

confidence: 99%

Assessment of termite damage in cross-laminated timber sections using micro-computed tomography and vibration analysis

Shirmohammadi¹,

Faircloth²,

Chan³

et al. 2023

BioRes

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show abstract

“…have prominent status in the European and North American tool handle market respectively, due to their toughness (Mania et al 2020), and a New Zealand equivalent is conceivable. Alternative regional timbers are demanded to replace unsustainably harvested tropical timber for use in musical instruments (Gibson & Warren 2018;Shirmohammadi et al 2021).…”

Section: Potential Marketsmentioning

confidence: 99%

A review of kowhai (Sophora spp.) and its potential for commercial forestry

Nguyen

Bayne

Altaner

2021

NZJFS

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Background: Demand for imported sawn timbers in New Zealand has increased over the last decade, reflecting the lack of New Zealand-grown, naturally durable timber in the domestic market. Therefore, a market opportunity exists for sustainably grown, naturally durable timbers in New Zealand for specialty applications. Kowhai (Sophora spp.) are New Zealand native tree species, known for their bright, yellow flowers and reported to produce coloured, naturally durable heartwood.Methods: Information on kowhai was collated from literature, focusing on their potential for commercial forestry. The taxonomic relationships, species descriptions, establishment, and growth rates of kowhai were examined, along with timber properties and historical uses, as well as medicinal applications. The review identified potential market opportunities for kowhai and key areas for further research.Results: Kowhai refers to eight different Sophora species that are endemic to New Zealand. Kowhai is easily established and the different species hybridise readily. While growth and form of kowhai varies with species, site, and management, examples of straight single-stemmed trees and annual diameter increments exceeding 20 mm have been found. Kowhai timber properties might be comparable to those of teak (Tectona grandis L.f.). Kowhai contains alkaloids, a class of compounds used in pharmaceutical applications. The species have been used for timber and traditional medicine by Maori in the past, while European settlers used kowhai for their durable and flexible timber.Conclusions: Kowhai could be established as a sustainable, domestic source of high-quality timber and substitute imported specialty timbers in New Zealand on account of their natural durability, strength, stiffness, colour, and density properties. The residues could support a secondary industry, as a source of alkaloids for pharmaceutical applications or natural dyes. Key areas that require further study include growth rates and silviculture, mechanical timber properties, machining/processing characteristics, natural durability and cytisine levels in kowhai, as well as the cultural, economic, and ecological framework required for a commercial kowhai forestry industry. Lack of literature on, and expertise in the use of native timbers in general are barriers to promoting native species for commercial forestry in New Zealand.

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Study on properties of radiata pine wood treated with furfuryl alcohol as fretboard materials for string instruments

et al. 2022

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Assessment of sound quality: Australian native hardwood species for guitar fretboard production

Cited by 5 publications

References 22 publications

Assessment of termite damage in cross-laminated timber sections using micro-computed tomography and vibration analysis

Assessment of termite damage in cross-laminated timber sections using micro-computed tomography and vibration analysis

A review of kowhai (Sophora spp.) and its potential for commercial forestry

Study on properties of radiata pine wood treated with furfuryl alcohol as fretboard materials for string instruments

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