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All Outputs (189)

TG1/0211/13rev: Derivation of GoldenEye-702 Grading Machine Settings for British Spruce (2011)
Preprint / Working Paper
Ridley-Ellis, D., & Moore, J. R. TG1/0211/13rev: Derivation of GoldenEye-702 Grading Machine Settings for British Spruce

Confidential report for CEN TC124 WG2 TG1 Grading machine: GoldenEye-702 Manufacturer: MiCROTEC GmbH Growth area: United Kingdom and Ireland Species: Sitka spruce (Picea sitchensis) Norway spruce (Picea abies) (WPCS) Sizes: 35 mm to 82 mm 5... Read More about TG1/0211/13rev: Derivation of GoldenEye-702 Grading Machine Settings for British Spruce.

TG1/0211/14rev: Derivation of GoldenEye-706 Grading Machine Settings for British Spruce (2011)
Preprint / Working Paper
Ridley-Ellis, D., & Moore, J. R. TG1/0211/14rev: Derivation of GoldenEye-706 Grading Machine Settings for British Spruce

Confidential report for CEN TC124 WG2 TG1 Grading machine: GoldenEye-706 Manufacturer: MiCROTEC GmbH Growth area: United Kingdom and Ireland Species: Sitka spruce (Picea sitchensis) Norway spruce (Picea abies) (WPCS) Sizes: 35 mm to 82 mm 5... Read More about TG1/0211/14rev: Derivation of GoldenEye-706 Grading Machine Settings for British Spruce.

The shear strength and failure modes of timber joists obtained from the torsion test method. (2010)
Presentation / Conference Contribution
Khokhar, A. M., Zhang, H., & Ridley-Ellis, D. (2010). The shear strength and failure modes of timber joists obtained from the torsion test method. In A. Ceccotti (Ed.), 11th World Conference on Timber Engineering 2010 (WTCTE 2010) (3509-3516)

This paper presents details of the experimental method and test results from a series of torsion tests undertaken to evaluate the shear strength of timber joists. The failure modes and the correlation of shear strength and torsional shear modulus we... Read More about The shear strength and failure modes of timber joists obtained from the torsion test method..

Computational issues regarding lattice models for wood (2010)
Presentation / Conference Contribution
Reichert, T., & Ridley-Ellis, D. (2010). Computational issues regarding lattice models for wood. In A. Ceccotti (Ed.), 11th World Conference on Timber Engineering 2010 (WCTE 2010) (2127-2132)

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.

The future of quality control for wood & wood products. (2010)
Presentation / Conference Contribution
(2010). The future of quality control for wood & wood products. In D. Ridley-Ellis, & J. Moore (Eds.), Proceedings of the final conference of COST Action E53

The principal aim of the COST Action E53 was to improve methods of quality control in processing round wood and timber to ensure that timber products and components meet the requirements of the users. The Action also promoted the improvement of spe... Read More about The future of quality control for wood & wood products..

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., Brüchert, 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..

Determination of shear strength of timber joists by torsion testing. (2009)
Presentation / Conference Contribution
Khokhar, A. M., Zhang, H., & Ridley-Ellis, D. (2009). Determination of shear strength of timber joists by torsion testing. In J. A. Santos (Ed.), Proceedings of COST E53 conference "Economic and Technical aspects of quality control for wood and wood produ

This paper presents an experimental investigation in which the torsion testing approach was employed to evaluate the shear strength of Sitka spruce and Norway spruce joists. Rectangular structural size specimens of lengths ranging from 1.0 m to 3.6... Read More about Determination of shear strength of timber joists by torsion testing..

The use of acoustic-based NDT to predict the wood properties of UK-grown Sitka spruce at different stages in the wood supply chain. (2009)
Presentation / Conference Contribution
Moore, J., Lyon, A. J., Searles, G. J., & Ridley-Ellis, D. (2009). The use of acoustic-based NDT to predict the wood properties of UK-grown Sitka spruce at different stages in the wood supply chain. In H. Zhang, & X. Wang (Eds.), Proceedings of the 16th I

This paper is concerned with the extent to which portable stress-wave-based instruments can be used to segregate Sitka spruce trees and logs; in particular the relationship between acoustic velocity and the properties of sawn timber. Measurements wer... Read More about The use of acoustic-based NDT to predict the wood properties of UK-grown Sitka spruce at different stages in the wood supply chain..

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). 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..

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.

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.

Bubble hunters 3D. (2008)
Digital Artefact
Ridley-Ellis, D. (2008). Bubble hunters 3D

Short video invited to be shown in the 3D theatre session of the 2009 Stereoscopic Displays and Applications conference, California

Online learning for the forest and timber industries. (2008)
Presentation / Conference Contribution
Ridley-Ellis, D., Nolte, S., & Condon, P. (2008). Online learning for the forest and timber industries. In 10th World Conference on Timber Engineering 2008 (461-469)

Online learning offers advantages for all levels of training and development in the timber industries, from new recruits at technician level to chartered professionals. Learners and employers both value the flexibility it affords, while educators val... Read More about Online learning for the forest and timber industries..

Dynamic performance of multi-webbed engineered timber joists (2008)
Journal Article
Bahadori-Jahromi, A., & Ridley-Ellis, D. (2008). Dynamic performance of multi-webbed engineered timber joists. Journal of the Institute of Wood Science, 18, 87-93. https://doi.org/10.1179/wsc.2008.18.2.87

The introduction of engineered beams offered longer span, lower cost joists in comparison to traditional solid timber sections; however, vibration criteria in the design codes may significantly reduce the permissible span of joists for domestic const... Read More about Dynamic performance of multi-webbed engineered timber joists.

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). Strength grading and the end user – lessons from the SIRT project at Napier University.

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.

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..