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290 results

Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials.

Presentation / Conference
Barreto, D. (2011, January)
Exploring the effects of stress history on the drained and undrained cyclic behaviour of granular materials. Paper presented at 5th International Conference on Geotechnical Earthquake Engineering (5-ICEGE), Santiago, Chile
This paper presents the results of 3D DEM simulations of granular materials subject to cyclic loading. While both the drained and undrained conditions are considered, the effe...

Radial periodic boundaries for axi-symmetric DEM simulations: development, implementation and validation.

Presentation / Conference
O'Sullivan, C., Cui, L., & Barreto, D. (2009, November)
Radial periodic boundaries for axi-symmetric DEM simulations: development, implementation and validation. Paper presented at International Conference on Particle-Based Methods: Particles, Barcelona, Spain
No abstract available.

Evolution of soil fabric and its interpretation using different methods.

Presentation / Conference
Barreto, D. (2008, June)
Evolution of soil fabric and its interpretation using different methods. Paper presented at British Geotechnical Association (BGA) Young Geotechnical Engineers' Symposium, UCL, London
Different methods to study the evolution of fabric anisotropy are presented. DEM simulations on assemblies of spheres subjected to different stress paths using a three-dimensi...

Effect of particle loss on soil behaviour.

Presentation / Conference
Kelly, D., McDougall, J., & Barreto, D. (2012, August)
Effect of particle loss on soil behaviour. Paper presented at ICSE-6 6th International Conference on Scour and Erosion
Soil particle loss can result in strength and volume reductions which are difficult to predict. This paper investigates the influence of the removal of fractions of selected p...

Particle loss and volume change on dissolution: experimental results and analysis of particle size and amount effects

Journal Article
McDougall, J., Kelly, D., & Barreto, D. (2013)
Particle loss and volume change on dissolution: experimental results and analysis of particle size and amount effects. Acta geotechnica, 8(6), 619-627. https://doi.org/10.1007/s11440-013-0212-0
Soil particles may be lost through dissolution, degradation or erosion. Regardless of the process of loss, there follows a change in soil structure both in terms of phase comp...

Pedestrian detection using low-resolution thermal imager versus visual imager

Presentation / Conference
Nilsson, M., Binnie, D., & Armitage, A. (2004, May)
Pedestrian detection using low-resolution thermal imager versus visual imager. Paper presented at PREP 2004, Baltimore, USA
No abstract available.

Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials.

Conference Proceeding
Barreto, D., Prada-Sarmiento, L. F., & Ramos-Cañón, A. M. (2015)
Micromechanical insight into the undrained instability of granular materials: deformation characteristics of geomaterials. In V. A. Rinaldi, M. E. Zeballos, & J. J. Clariá (Eds.), Deformation Characteristics of Geomaterials, 655-662. doi:10.3233/978-1-61499-601-9-655
There is no agreement between experimental researchers whether the point where a granular material responds with a large change of stresses, strains or excess pore water press...

The influence of inter-particle friction and the intermediate stress ratio on soil response under generalised stress conditions

Journal Article
Barreto, D., & O'Sullivan, C. (2012)
The influence of inter-particle friction and the intermediate stress ratio on soil response under generalised stress conditions. Granular Matter, 14(4), 505-521. https://doi.org/10.1007/s10035-012-0354-z
Previous research studies have used either physical experiments or discrete element method (DEM) simulations to explore, independently, the influence of the coefficient of int...

Use of DEM and elastic stability analysis to explain the influence of the intermediate principal stress on shear strength

Journal Article
O'Sullivan, C., Wadee, M., Hanley, K., & Barreto, D. (2013)
Use of DEM and elastic stability analysis to explain the influence of the intermediate principal stress on shear strength. Géotechnique, 63(15), 1298-1309. https://doi.org/10.1680/geot.12.p.153
One interesting aspect of soil response is the sensitivity of the mechanical behaviour to the intermediate principal stress. In this study, a fundamental mechanism that explai...

DEM simulations of granular materials involving principal stress rotation.

Presentation / Conference
Barreto, D., O'Sullivan, C., & Zdravkovic, L. (2008, May)
DEM simulations of granular materials involving principal stress rotation. Paper presented at Inaugural International Conference of the Engineering Mechanics Institute - EM'08, Minneapolis, USA
No abstract available.
29 results

Redesign of an electrical device and metallurgy re-engineering

2015 - 2015
To look at the feasibility of redesigning an electronic device with specific properties to meet offshore performance standard. This will require materials analysis and design, electronics analysis and...
Funder: Scottish Funding Council | Value: £4,980

Geotechnical analysis of recycled materials for use in a sports environment

2015 - 2015
The project will investigate the effectiveness of adding crumbed rubber to the site soil as a means of improving soil resilience to wheel loads, resisting erosion and hence reducing maintenance burden...
Funder: Scottish Funding Council | Value: £4,863

1st choice Locksmiths - Feasibility study on automated window closure system

2015 - 2015
The customer has experience in the locksmith sector and has identified an opportunity for developing a system that will automatically control the closure of windows to prevent theft and break in. An i...
Funder: Scottish Funding Council | Value: £4,498

Development of a Columbia-UK research co-operation programme on infrastructure & climate change

2014 - 2015
This is a travel grant to develop research on unsaturated soil behaviour and cyclic behaviour of soils and their relations with climate changes effects on civil engineering infrastructure. It aims to ...
Funder: British Council | Value: £6,195

Design of hoover attachment

2013 - 2015
The company have a design idea for a fully flexible hoover attachment that has a flexible hinge that will allow a person to clean inaccessible areas of the house without assuming dangerous positions o...
Funder: Scottish Funding Council | Value: £4,830

Development of mobile walking device

2014 - 2015
The customer had a prototype made by a FE College that proved inadequate and did not use the appropriate materials. The project will be to re-engineer a prototype using the desired specifications. We...
Funder: Scottish Funding Council | Value: £4,845

Array Based Infrared Radiation Detection System

2010 - 2016
Industrial Case studentship - The aim of the project is to develop algorithms and an Application Program Interface (API) that will provide an intelligent analysis of the complex signals generated by a...
Funder: Engineering and Physical Sciences Research Council | Value: £70,867

A micro-scale (DEM) investigation on driven pile cycle behaviour

2014 - 2016
Structures such as bridges or wind turbines develop loads that have to be transmitted to the ground. The loads can be static (self-weight) or dynamic (wind, wave or traffic loads) and may be significa...
Funder: Royal Academy of Engineering | Value: £8,000

KTP Quality Precision Technology

2016 - 2018
The strategic development of technology and organisation to support the company’s growth in design, manufacture and delivery of water treatment and energy conservation systems Innovate KTP no. 010118
Funder: Innovate UK | Value: £137,743

KTP CGI International Ltd (Pyroguard)

2015 - 2018
To evaluate and understand the rheological behaviour of CGI Pyroguard technologies to inform new product development and appropriately measure current production. Innovate KTP no. 010023
Funder: Innovate UK | Value: £231,537
7 results

Design, modelling and control of a rotorcraft landing gear for uneven ground conditions

2016 - 2020
The PhD project studies the area of robotic landing gear. Most aerial vehicles, including helicopters, incorporat...
Daniel Melia Boix | Director of Studies: Dr Keng Goh | Second Supervisor: Gareth Smith

Cyclic performance of rubber-soil mixtures to enhance seismic protection

2015 - 2020
The main aim of the project seeks to enhance the resistance of the soil foundation against seismic events with the introduction ...
Dr Juan Bernal-Sanchez | Director of Studies: Dr John McDougall | Second Supervisor: Dr Daniel Barreto Gonzalez

Investigations into the application of engineered bamboo for future hybrid beams

2015 - 2020
Around half of all non-renewable resources mankind consumes are used in construction sector, making it one of the least ...
Niaz Gharavi | Director of Studies: Dr Johnson Zhang | Second Supervisor: Dr Kenneth Leitch

Advanced numerical simulation of soil liquefaction

2018 - date
Mr James Leak | Director of Studies: Dr Daniel Barreto Gonzalez | Second Supervisor: Dr Vicky Dimitriadi

The feasibility study of development and implementation of smart energy system for 100% renewable energy and transport solutions for Sri Lanka

2015 - date
Mr Wattala Fernando | Director of Studies: Dr Kamyab Givaki | Second Supervisor: Prof Naren Gupta

The use of torsion test method to evaluate the shear modulus and the shear strength of timber joists

2005 - 2011
Dr Aamir Khokhar | Director of Studies: Dr Johnson Zhang

2001 - 2007
Dr Neil Shearer | Director of Studies: Alan Davidson | Second Supervisor: Janos Hajto
9 results

Cyclists: why uneven roads and potholes are endangering your health

25 August 2019
A HIGH-TECH bicycle which measures cyclists' exposure to potentially harmful vibrations from uneven road surfaces could be used to check the safety of cycle lanes and other routes. Back problems and ...

Japanese vibration expert joins Scottish monitoring firm Reactec

28 July 2019
Professor Setsuo Maeda, one of the world’s most respected experts in human response to vibration, has been appointed as Reactec’s chief scientific liaison – relocating from Japan to Edinburgh for the ...

Curvilinear MetaSurfaces for wave manipulation: a closer step to invisibility cloak

11 March 2019
Scientists from Edinburgh Napier University (Dr. Luigi La Spada) in collaboration with Queen Mary University of London and UK Industries (Qinetiq Group Ltd) have successfully developed a new design me...

Cyclists risk nerve damage from potholes and rough roads, study finds

15 October 2017
Cyclists are at risk of permanent nerve damage because of poor road surfaces, research using an innovative measuring bike has revealed.

Cobbles, potholes, and rough roads can cause nerve damage for cyclists, study finds

12 October 2017
Cyclists who regularly ride on poor road surfaces or cobbles could be at risk of suffering nerve damage in their hands and arms, a new study has found.

Cobbles, potholes, and rough roads can cause nerve damage for cyclists, study finds

8 October 2017
Cyclists who regularly ride on poor road surfaces or cobbles could be at risk of suffering nerve damage in their hands and arms, a new study has found. The study by Edinburgh Napier University found ...

Risk of poorly-maintained roads to cyclists' health highlighted

7 October 2017
Cyclists are risking permanent nerve damage due to poor road surfaces, research by Edinburgh Napier University reported in The Scotsman suggests.

Is your commute causing you permanent nerve damage?

7 October 2017
Potholes are not just a danger to your bike - but could also cause permanent nerve damage to you, according to new research. A study by Edinburgh Napier University discovered that Hand Arm Vibration ...

Cyclists risk nerve damage from uneven street surfaces

7 October 2017
Cyclists are at risk of permanent nerve damage because of poor road surfaces in Scottish cities, research using a innovative measuring bike has revealed.