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Wood properties & strength grading (2022)
Presentation / Conference
Ridley-Ellis, D. (2022, December). Wood properties & strength grading. Presented at James Jones & Sons Architects' and Structural Engineers' Open Day, Lockerbie

James Jones & Sons held an open day for architects and structural engineers at its flagship sawmill site in Lockerbie. "James Jones & Sons' new visitor building at its flagship sawmill site in Lockerbie has attracted considerable interest in the... Read More about Wood properties & strength grading.

Correction of Evanescent Wave Influence on the Flexural Wave Velocity and Wavelength Estimation Based on a Mode Shape Function (2022)
Journal Article
Pantelić, F., Šumarac Pavlović, D., Mijić, M., & Ridley-Ellis, D. (2022). Correction of Evanescent Wave Influence on the Flexural Wave Velocity and Wavelength Estimation Based on a Mode Shape Function. Archives of Acoustics, 47(4), 539-546. https://doi.org/10.24425/aoa.2022.142017

The aim of this research is to use a simple acoustic method of a very near field recording, which enables measurement and display of oscillation modes, to estimate the velocity of flexural waves, based on the wavelengths of standing waves measured on... Read More about Correction of Evanescent Wave Influence on the Flexural Wave Velocity and Wavelength Estimation Based on a Mode Shape Function.

Design of Timber Buildings for Deconstruction and Reuse — Three methods and five case studies (2022)
Report
Sandin, Y., Shotton, E., Cramer, M., Sandberg, K., Walsh, S. J., González-Alegre, V., …Zabala Mejia, A. (2022). Design of Timber Buildings for Deconstruction and Reuse — Three methods and five case studies. ForestValue

There is a need for a shift towards circular economy in the construction sector and design philosophies as Design for Deconstruction and Reuse (DfDR) and Design for Adaptability (DfA) are being developed as means to design out waste and enhance resou... Read More about Design of Timber Buildings for Deconstruction and Reuse — Three methods and five case studies.

The relationship between bending and tension strength of Irish and UK spruce and pine (2022)
Journal Article
Gil-Moreno, D., Ridley-Ellis, D., O'Ceallaigh, C., & Harte, A. M. (2022). The relationship between bending and tension strength of Irish and UK spruce and pine. European Journal of Wood and Wood Products, 80, 585-596. https://doi.org/10.1007/s00107-022-01787-6

The correct characterisation of wood properties is fundamental for the best utilisation of resources. In Europe, grading is defined by strength classes that are determined based on either bending or tension tests. The European standards give equation... Read More about The relationship between bending and tension strength of Irish and UK spruce and pine.

More than the sum of their parts - How UK Timber Houses can be Deconstructed and Reused (2021)
Conference Proceeding
Cramer, M., & Sandin, Y. (2021). More than the sum of their parts - How UK Timber Houses can be Deconstructed and Reused. In Proceedings of the 17th meeting of the Northern European Network for Wood Science and Engineering (WSE 2021) (108-110). https://doi.org/10.5755/e01.9786090217627

The InFutUReWood project (infuturewood.info) focuses on the reuse of structural timber and is working on improving the design of buildings to facilitate deconstruction and reuse. For this purpose, we conducted five case studies in four of the partner... Read More about More than the sum of their parts - How UK Timber Houses can be Deconstructed and Reused.

Perception and use of timber in construction: A case study of Ireland and the UK (2021)
Conference Proceeding
O'Ceallaigh, C., Gil-Moreno, D., Ridley-Ellis, D., & Harte, A. M. (2021). Perception and use of timber in construction: A case study of Ireland and the UK. In WCTE 2021: World Conference on Timber Engineering Proceedings

A survey was carried out to examine the perception of timber in construction among industry stakeholders within northwest Europe. The survey received responses from 17 countries in total. The total results of all respondents are presented along with... Read More about Perception and use of timber in construction: A case study of Ireland and the UK.

Test Machine Effect in the determination of modulus of elasticity for strength-graded timber (2021)
Conference Proceeding
Gil-Moreno, D., Ridley-Ellis, D., & Harte, A. M. (2021). Test Machine Effect in the determination of modulus of elasticity for strength-graded timber. In WCTE 2021: World Conference on Timber Engineering Proceedings

This paper investigates if the relationship between the global and local moduli of elasticity (MoE), measured in bending tests, is affected by the test machines employed, and how that may influence strength grading. The ultimate aim is to study the p... Read More about Test Machine Effect in the determination of modulus of elasticity for strength-graded timber.

Estimating mechanical properties of clear wood from ten‐year‐old Melia azedarach trees using the stress wave method (2021)
Journal Article
Van Duong, D., & Ridley-Ellis, D. (2021). Estimating mechanical properties of clear wood from ten‐year‐old Melia azedarach trees using the stress wave method. European Journal of Wood and Wood Products, 79(4), 941-949. https://doi.org/10.1007/s00107-021-01664-8

The objective of this study was to examine the potential of stress wave velocity (SWV) as a rapid and non-destructive method to estimate the mechanical properties of Melia azedarach wood. The SWV, dynamic modulus of elasticity (MOE d), modulus of ela... Read More about Estimating mechanical properties of clear wood from ten‐year‐old Melia azedarach trees using the stress wave method.

A case study of timber demolition recycling in the UK (2021)
Conference Proceeding
Cramer, M., & Ridley-Ellis, D. (2021). A case study of timber demolition recycling in the UK. In Proceedings of the 16th Annual Meeting of the Northern European Network for Wood Science and Engineering – WSE2020 (89-91)

A brief look at alternative species in the UK (2021)
Conference Proceeding
Adams, S. H., & Ridley-Ellis, D. J. (2021). A brief look at alternative species in the UK. In Proceedings of the 16th Annual Meeting of the Northern European Network for Wood Science and Engineering – WSE2020 (68-70)

Developing a BIM and simulation-based hazard assessment and visualization framework for CLT construction design (2021)
Journal Article
BuHamdan, S., Duncheva, T., & Alwisy, A. (2021). Developing a BIM and simulation-based hazard assessment and visualization framework for CLT construction design. Journal of Construction Engineering and Management, 147(3), https://doi.org/10.1061/%28ASCE%29CO.1943-7862.0002000

The sustainability of the urban built environment has previously been investigated through many angles in relation to the growing global urban population and provision of energy-efficient housing. One emerging trend in sustainable medium-density cons... Read More about Developing a BIM and simulation-based hazard assessment and visualization framework for CLT construction design.

Offsite Ready Booklets (2020)
Report
Duncheva, M., Calcagno, C., Henquel, V., Leitch, K., Stinson, J., Plant O'Toole, E., …Ferriz-Papi, J. A. (2020). Offsite Ready Booklets. Edinburgh: Construction Industry Training Board

Refocusing modern methods of construction on the climate emergency: a 'five capitals' model for action (2020)
Journal Article
Campbell, A., Hairstans, R., & Jones, G. (2020). Refocusing modern methods of construction on the climate emergency: a 'five capitals' model for action. The structural engineer : journal of the Institution of Structural Engineers, 98(9), 22-28

Adrian Campbell, Robert Hairstans and Giulia Jones explain how natural, human, social, manufactured and economic capital can all benefit from a sustainability-focused approach to off -site manufacturing.

SPR biosensor based on polymer multi-mode optical waveguide and nanoparticle signal enhancement (2020)
Journal Article
Gabriela Walter, J., Eilers, A., Alwis, L., Wilhelm Roth, B., & Bremer, K. (2020). SPR biosensor based on polymer multi-mode optical waveguide and nanoparticle signal enhancement. Sensors, 20(10), Article 2889. https://doi.org/10.3390/s20102889

We present a surface plasmon resonance (SPR) biosensor that is based on a planar-optical multi-mode (MM) polymer waveguide structure applied for the detection of biomolecules in the lower nano-molar (nM) range. The basic sensor shows a sensitivity of... Read More about SPR biosensor based on polymer multi-mode optical waveguide and nanoparticle signal enhancement.

Analysis of a wooden specimen's mechanical properties through acoustic measurements in the very near field (2020)
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 assessment of modulus of elasticity using the impulse excitation is extended by usi... Read More about Analysis of a wooden specimen's mechanical properties through acoustic measurements in the very near field.

The Mechanical and Resonance Assessment of Large Clear Samples of UK-Grown Beech Wood (2019)
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 (Fagus sylvatica L.), grown in the United Kingdom. The material was largely fr... Read More about The Mechanical and Resonance Assessment of Large Clear Samples of UK-Grown Beech Wood.

Influence of knot area indexes on tension strength of Sitka spruce (2019)
Conference Proceeding
Gil-Moreno, D., Ridley-Ellis, D., & Harte, A. M. (2019). Influence of knot area indexes on tension strength of Sitka spruce. In Proceedings of the 15th Annual Meeting of the Northern European Network for Wood Science and Engineering

It is well known that knots can reduce the strength of timber, and the selection of “critical section” for testing to EN 408 and EN 384 is typically based on the size and position of knots. In Ireland, the visual strength grading Standard IS 127 spec... Read More about Influence of knot area indexes on tension strength of Sitka spruce.

Grading of British spruce cladding battens by ring width for density, fastener performance and fire (2019)
Conference Proceeding
Ridley-Ellis, D. (2019). Grading of British spruce cladding battens by ring width for density, fastener performance and fire. In Proceedings of the 15th Annual Meeting of the Northern European Network for Wood Science and Engineering

The UK has a British Standard for external timber cladding, BS8605-1, in which support battens are defined as timber components of a section, grade, and durability, suitable for supporting external timber cladding. The term includes both battens (whi... Read More about Grading of British spruce cladding battens by ring width for density, fastener performance and fire.