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Computational issues regarding lattice models for wood (2010)
Presentation / Conference Contribution
Reichert, T., & Ridley-Ellis, D. (2010, June). Computational issues regarding lattice models for wood. Presented at 11th World Conference on Timber Engineering 2010., Riva del Garda, Italy

This paper describes means to overcome some of the computational issues related to lattice models. The first is the use of a solution technique, different from a Newton-Raphson approach, called the Step-Size-Control (SSC) algorithm to handle strain-s... Read More about Computational issues regarding lattice models for wood.

Variables affecting the stiffness and distortion of Sitka spruce. (2010)
Thesis
Reynolds, T. N. Variables affecting the stiffness and distortion of Sitka spruce. (Thesis). Edinburgh Napier University. http://researchrepository.napier.ac.uk/id/eprint/5265

Inherent in the structure of timber are features affecting dimensional stability, stiffness and strength. These include knots, compression wood and spiral grain. Physical characteristics such as log shape, density, rate of growth,
presence of juveni... Read More about Variables affecting the stiffness and distortion of Sitka spruce..

Effects of genetics on the wood properties of Sitka spruce growing in the UK: bending strength and stiffness of structural timber. (2009)
Journal Article
Moore, J. R., Mochan, S. J., BrĂĽchert, F., Hapca, A. I., Ridley-Ellis, D., Gardiner, B. A., & Lee, S. . J. (2009). Effects of genetics on the wood properties of Sitka spruce growing in the UK: bending strength and stiffness of structural timber. Forestry, 82, 491-501. https://doi.org/10.1093/forestry/cpp018

Mechanical tests were conducted on structural timber from a 37-year-old Sitka spruce (Picea sitchensis (Bong.) Carr), progeny trial located in Kershope Forest, Cumbria, UK. Values of modulus of rupture (MOR) and global modulus of elasticity (MOEG) in... Read More about Effects of genetics on the wood properties of Sitka spruce growing in the UK: bending strength and stiffness of structural timber..

Strategic Integrated Research in Timber: Getting the most out of the UK's timber resource. (2009)
Journal Article
Ridley-Ellis, D., Moore, J., Lyon, A. J., Searles, G. J., & Gardiner, B. A. (2009). Strategic Integrated Research in Timber: Getting the most out of the UK's timber resource. Non-conventional Materials and Technologies,

Sitka spruce (Picea sitchensis) is the United Kingdom’s main commercial tree species accounting for nearly one-third of the UK's total woodland area and half of its conifer estate. Sawn timber from this species readily grades to the C16 strength clas... Read More about Strategic Integrated Research in Timber: Getting the most out of the UK's timber resource..

Random acts of elasticity: MoE, G and EN408. (2009)
Presentation / Conference Contribution
Ridley-Ellis, D., Moore, J., & Khokhar, A. M. (2009, April). Random acts of elasticity: MoE, G and EN408

The paper examines the variation in modulus of elasticity (MoE) and shear modulus (G) within sawn timber and the implications for testing timber in accordance with EN408:2003. A combination of mechanical testing and simple analytical modelling is us... Read More about Random acts of elasticity: MoE, G and EN408..

Recruiting Women into Scottish Wood Chain Industries (2008)
Journal Article
Ridley-Ellis, D., MacPherson, S., & Thomson, E. (2008). Recruiting Women into Scottish Wood Chain Industries. Timber Engineering, 1, 477-485

In common with many countries, the composition and attitudes of Scotland’s population are changing. It is the regions where the industries in the wood products value chain are based that are expected to change most dramatically. These industries cont... Read More about Recruiting Women into Scottish Wood Chain Industries.

Determining the Shear Modulus of Sitka Spruce from Torsion Tests (2008)
Journal Article
Khokhar, A. M., Zhang, H., Ridley-Ellis, D., & Moore, J. (2008). Determining the Shear Modulus of Sitka Spruce from Torsion Tests. Timber Engineering,

This paper presents details of the experimental method, and preliminary results from, a series of torsion tests undertaken to evaluate the shear modulus of Sitka spruce (Picea sitchensis) timber. Direct torsion tests were used to determine the variat... Read More about Determining the Shear Modulus of Sitka Spruce from Torsion Tests.

Strength grading and the end user – lessons from the SIRT project at Napier University (2008)
Presentation / Conference Contribution
Ridley-Ellis, D., Moore, J., & Lyon, A. J. (2008, October). Strength grading and the end user – lessons from the SIRT project at Napier University. Presented at Conference COST Action E53 “End user’s needs for wood material and products”

The paper reviews the research that has been undertaken by the Strategic Integrated Research in Timber (SIRT) project at Napier University, with reference to the technologies, techniques and approaches required to grade the UK’s timber resource accor... Read More about Strength grading and the end user – lessons from the SIRT project at Napier University.

Below-ground root yield and distribution in natural and replanted mangrove forests at Gazi bay, Kenya (2008)
Journal Article
Tamooh, F., Huxham, M., Karachi, M., Mencuccini, M., Kairo, J. G., & Kirui, B. (2008). Below-ground root yield and distribution in natural and replanted mangrove forests at Gazi bay, Kenya. Forest Ecology and Management, 256(6), 1290-1297. https://doi.org/10.1016/j.foreco.2008.06.026

Estimation of total biomass in woody ecosystems is important because of its relevance to nutrient turnover and the potential to store carbon. Most work on mangrove biomass, particularly in the Western Indian Ocean Region, has concentrated on the abov... Read More about Below-ground root yield and distribution in natural and replanted mangrove forests at Gazi bay, Kenya.

Promoting the science and engineering of timber to children. (2008)
Journal Article
Ridley-Ellis, D. (2008). Promoting the science and engineering of timber to children. Timber Engineering,

The UK’s young people are generally very poorly informed about the opportunities that exist for them in wood science and timber engineering, and commonly perceive the sector to be old-fashioned, unrewarding, environmentally damaging, and requiring of... Read More about Promoting the science and engineering of timber to children..

Properties of UK-Grown Sitka Spruce: Extent and Sources of Variation. (2008)
Journal Article
Moore, J., Lyon, A. J., Ridley-Ellis, D., & Gardiner, B. A. (2008). Properties of UK-Grown Sitka Spruce: Extent and Sources of Variation. Timber Engineering,

Structural timber produced from Sitka spruce plantations in the UK typically achieves the requirements for the C16 strength class. However, very little is known about the variability of this plantation resource, or the factors that contribute to this... Read More about Properties of UK-Grown Sitka Spruce: Extent and Sources of Variation..

Do people grow on trees? Guidance for employers in the Scottish forest and timber industries. (2008)
Report
Bond, S., Thomson, E., MacPherson, S., & Ridley-Ellis, D. (2008). Do people grow on trees? Guidance for employers in the Scottish forest and timber industries

The final report for the Forest Industries Recruitment and Retention (FIRRS) project.

Forests and their products are hugely important to the economic and environmental sustainability of Scotland’s economy and influence many aspects of Scottish soc... Read More about Do people grow on trees? Guidance for employers in the Scottish forest and timber industries..

Detection of β-1-4-galactan in compression wood of Sitka Spruce (Picea sitchensis (Bong.) Carrière) by immunofluorescence. (2007)
Journal Article
Hapca, A. I., Altaner, C., Knox, J. P., & Jarvis, M. C. (2007). Detection of β-1-4-galactan in compression wood of Sitka Spruce (Picea sitchensis (Bong.) Carrière) by immunofluorescence. Holzforschung, 61(3), 311-316. https://doi.org/10.1515/HF.2007.049

β-1-4-Galactan has been detected in Sitka spruce [Picea sitchensis (Bong.) Carrière] by an immunofluorescence procedure. The anti-β-1-4-galactan monoclonal antibody LM5 was found to bind to compression wood (CW) tissue as identified by cell morpholog... Read More about Detection of β-1-4-galactan in compression wood of Sitka Spruce (Picea sitchensis (Bong.) Carrière) by immunofluorescence..

A digital photographic method for 3D reconstruction of standing tree shape. (2007)
Journal Article
Hapca, A. I., Mothe, F., & Leban, J.-M. (2007). A digital photographic method for 3D reconstruction of standing tree shape. Annals of Forest Science, 64(6), 631-637. https://doi.org/10.1051/forest%3A2007041

A digital photographic method is presented which is able to reconstruct the profile of the stem on standing trees up to a height of 12 m and to provide a fine level of detail. The method uses two digital photographs taken at 90° to each other and doe... Read More about A digital photographic method for 3D reconstruction of standing tree shape..

Modelling environmental variation in Young’s modulus for Pinus radiata and implications for determination of critical buckling height. (2006)
Journal Article
Watt, M. S., Moore, J. R., Facon, J.-P., Downes, G. M., Clinton, P. W., Coker, G., Davis, M. R., Simcock, R., Parfitt, R. L., Dando, J., Mason, E. G., & Bown, H. E. (2006). Modelling environmental variation in Young’s modulus for Pinus radiata and implications for determination of critical buckling height. Annals of Botany, 98, 765-775. https://doi.org/10.1093/aob/mcl161

Background and Aims: Although density-specific stiffness, E/, (where E is Young's modulus and is wood density) is often assumed constant by the elastic similarity model, and in determination of critical buckling height (Hcrit), few studies have test... Read More about Modelling environmental variation in Young’s modulus for Pinus radiata and implications for determination of critical buckling height..

The effect of wind exposure on the tree aerial architecture and biomechanics of Sitka Spruce (picea sitchenisis Bong.). (2006)
Journal Article
Gardiner, B. A., & BrĂĽchert, F. (2006). The effect of wind exposure on the tree aerial architecture and biomechanics of Sitka Spruce (picea sitchenisis Bong.). American Journal of Botany, 93, 1512-1521

This paper reports on the effect of wind loading below damaging strength on tree mechanical and physical properties. In a wind-exposed Sitka spruce stand in western Scotland, 60 trees at four different levels of wind exposure (10 m, 30 m, 50 m, 90 m... Read More about The effect of wind exposure on the tree aerial architecture and biomechanics of Sitka Spruce (picea sitchenisis Bong.)..