Rudolf E. Booker
Forest Research Institute
6 Papers
113 Citations
Rudolf E. Booker is an academic researcher from Forest Research Institute. The author has contributed to research in topics: Pinus radiata & Resin canal. The author has an hindex of 5, co-authored 6 publications. Previous affiliations of Rudolf E. Booker include Scion.
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Papers
Variation of stress wave velocity with MC and temperature
H. Kang,Rudolf E. Booker +1 more
TL;DR: In this paper, the effect of moisture content (MC) and temperature on the stress wave velocity and signal frequency spectrum through sapwood has been investigated, and it was found that in 2.5 m long green boards only low frequencies were present in the transmitted signal, while for boards less than 500 mm long, the much higher resonance frequency of the transducer was dominant.
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Impregnation of radiata pine wood by vacuum treatment II: effect of pre-steaming on wood structure and resin content
Junji Matsumura,Rudolf E. Booker,Bradley G. Ridoutt,Lloyd Donaldson,Naoto Mikajiri,Hiroshi Matsunaga,Kazuyuki Oda +6 more
TL;DR: In this paper, the primary flow pathways in radiata pine sapwood and heartwood were found to be the resin canal network and ray parenchyma cells, which provided conduction without large resistance.
Impregnation of radiata pine wood by vacuum treatment: Identification of flow paths using fluorescent dye and confocal microscopy
TL;DR: In this article, Radiata pine sapwood and heartwood were pre-steamed with toluidine blue and fluorescein and compared with non-presteamed sapwood.
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•Journal Article
Comparison of log segregation methods for structural lumber yield improvement
TL;DR: In this paper, the authors compared branch size, Pilodyn penetration, and longitudinal stress-wave velocity as methods for structural log selection, and found that for plantation-grown logs, where branches can be large (often exceeding 2 in, diameter), the best results are obtained by combining branch size and sonic grading.
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Geometric model to predict twist in unrestrained boards
TL;DR: In this article, a theory for calculating the twist that develops in boards during drying without restraint, as well as the deformation in cross-section that accompanies the development of twist was developed.
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