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114 results

Analysis of a wooden specimen's mechanical properties through acoustic measurements in the very near field

Journal Article
Pantelić, F., Mijić, M., Šumarac Pavlović, D., Ridley-Ellis, D., & Dudeš, D. (2020)
Analysis of a wooden specimen's mechanical properties through acoustic measurements in the very near field. Journal of the Acoustical Society of America, 147(4), EL320-EL325. https://doi.org/10.1121/10.0001030
This paper presents the method for prediction of some basic mechanical parameters of a wood specimen by using simple instrumentation. The standard acoustic method for assessme...

The Mechanical and Resonance Assessment of Large Clear Samples of UK-Grown Beech Wood

Journal Article
Ridley-Ellis, D. (2019)
The Mechanical and Resonance Assessment of Large Clear Samples of UK-Grown Beech Wood. Pro Ligno, 15(4), 32-39
The paper presents the results of non-destructive longitudinal resonance (impulse excitation technique), and mechanical flexural testing, of a batch of European beech wood (Fa...

Quantification of chemical changes taking place in spruce wood structure following long period thermal treatment

Presentation / Conference
Popescu, C., Ridley-Ellis, D., & Popescu, M. (2019, August)
Quantification of chemical changes taking place in spruce wood structure following long period thermal treatment. Paper presented at 2DCOS-10, The 10th International Symposium on Two-dimensional Correlation Spectroscopy, Changchun, China
Wood is a natural composite polymer containing different amounts of cellulose, lignin and hemicelluloses and some other low molecular compounds (i.e. extractives). Due to its ...

Timber grading potential of Douglas fir in the Republic of Ireland and the UK

Journal Article
Gil-Moreno, D., Ridley-Ellis, D., & Harte, A. (2019)
Timber grading potential of Douglas fir in the Republic of Ireland and the UK. International Wood Products Journal, 10(2), 64-69. https://doi.org/10.1080/20426445.2019.1617984
Results of the recently approved machine control grading settings for Douglas fir in the Republic of Ireland and the UK have shown that the species can be graded to C18, and h...

Lesser-used UK-grown timber

Book Chapter
Ridley-Ellis, D. (2019)
Lesser-used UK-grown timber. In TRADA Timber Industry Yearbook 2019, 200-205
Daniel Ridley-Ellis looks at the grading properties of different species in comparison with the highly commercial Sitka spruce.

Grading of British Timber

Journal Article
Ridley-Ellis, D. (2018)
Grading of British Timber. The Full Circle: The Journal of the Association of Scottish Hardwood Sawmillers, 34-36
A summary of grading of home grown timber for the magazine of the Association of Scottish Hardwood Sawmillers (ASHS).

Some thresholds for grading British grown spruce to optimised strength classes using longitudinal resonance

Conference Proceeding
Ridley-Ellis, D., Adams, S., & Lehneke, S. (2018)
Some thresholds for grading British grown spruce to optimised strength classes using longitudinal resonance
The main commercial species in the UK and Ireland is Sitka spruce (Picea sitchensis), which is graded in combination with a small amount of Norway spruce (P. abies). It is typ...

Strength grading of timber in the UK in 2018

Presentation / Conference
Ridley-Ellis, D. (2018, June)
Strength grading of timber in the UK in 2018. Presented at Timber 2018
This paper summarises the state-of-the-art of strength grading of UK-grown timber. It lists the following information along with the primary references: visual grading grades ...

The daily cycle of moisture content expansion and contraction in UK-grown Sitka spruce trees

Presentation / Conference
Adams, S., & Ridley-Ellis, D. (2018, June)
The daily cycle of moisture content expansion and contraction in UK-grown Sitka spruce trees. Paper presented at Timber 2018, London
The diameter of five dominant Sitka spruce (Picea sitchensis) trees at Griffin Forest (near Aberfeldy, Scotland) were monitored at two minute intervals with dendrometers betwe...

Impulse excitation measurement of small changes in elastic moduli and damping using R

Journal Article
Ridley-Ellis, D., Libeau, M., & Mignerat, D. (2018)
Impulse excitation measurement of small changes in elastic moduli and damping using R. International Wood Products Journal, 1-6. https://doi.org/10.1080/20426445.2018.1475928
Impulse excitation is commonly used to assess wood stiffness in both scientific and industrial settings. Modes of vibration are excited by a mechanical impulse and their reson...
20 results

Timber grading standards support (Workpackage 2)

2014 - 2018
Provide support to the forest industry through representation on various GB and European committees, and to provide dissemination and facilitate events to the sawmill industy.
Funder: Scottish Forestry | Value: £130,000

Larch grading setting

2014 - 2015
To create approved settings for existing x-ray and acoustic grading machines for British larch whilst creating knowledge on dimensional tolerance and creating a subset of sample resource for Proof of ...
Funder: Scottish Forestry | Value: £105,000

SIRT workplan 2014/17 (Workpackage 1)

2014 - 2018
Improving industry knowledge of timer properties and utilisation potential of 'alternative species', testing 6 different species. Disseminate and promote effectively the outputs of the programme, incl...
Funder: Scottish Forestry | Value: £289,999

Public engagement work - Bright Club Scotland

2012 - 2015
Public engagement and providing training for others doing public engagement
Funder: Bright Club Scotland | Value: £13,716

Growth & quality of minor conifer timber species

2012 - 2016
PhD investigating performance of timber from some minor species while developing approaches for assessing wood in standing trees.
Funder: Scottish Forestry | Value: £73,379

Historic Scotland, Development of Appropriate Tools for the Analysis of Historic Timber

2012 - 2013
Exploratory non-destructive testing of historic and artificially aged timber with a view to developing an inexpensive method of assessing historical wooden building elements in situ for condition and ...
Funder: Historic Environment Scotland | Value: £9,904

Improving the quality of Sitka spruce structural timber etc

2011 - 2014
Value: £20,500

Improving the quality of Larch & Douglas Fir for Structural timber

2011 - 2014
Distortion (warping) when sawn timber is kiln-dried has been identified as the most important quality barrier preventing the wider utilisation of UK-grown timber in the construction industry. Using m...
Funder: Scottish Forestry | Value: £55,181

Edinburgh Beltane Public Engagement Fellowship

2011 - 2012
Edinburgh Beltane Public Engagement Fellowship: National photography competition - science and Engineering in the forest industries
Funder: Beltane Public Engagement | Value: £7,244

Exploratory non-destructive testing of historical wooden painted ceilings

2010 - 2012
The project is to be an exploratory study using a number of dismantled historic painted ceilings in storage. The purpose is to understand the possibilities and challenges for non-destructive testing o...
Funder: Historic Environment Scotland | Value: £9,978

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