Structural Engineering & Materials Discipline

Projects | Facilities | People

Leveraging the complimentary expertise of our team in the key areas of materials, structural engineering and computational mechanics we develop a fundamental understanding of the behaviour of components and structures, so that they can be tailored and adapted to meet the demands of an ever-changing society by taking advantage of novel materials and innovative manufacturing techniques.

Research Groups

Our research activities cover all aspects of structural engineering including: traditional and innovative construction materials; rehabilitation solutions and novel structural systems; resilient buildings and infrastructure under extreme load events such as earthquakes, blast and impact and fire; computational mechanics and building physics; lightweight and sustainable construction; digital manufacturing and robotics.

Concrete Structures

Our work covers all aspects of concrete, concrete technology and sustainable solutions, Fibre Reinforced Concrete, Fibre Reinforced Polymer strengthening and reinforcements, structural and material testing and characterisation, short and long-term structural behaviour, analysis, innovation, and design.

Group members:
Maurizio Guadagnini, Iman Hajirasouliha, Shan-Shan Huang, Zuhal Ozdemir, Kypros Pilakoutas & Giacomo Torelli

Steel and Composite Structures

Our current research activities are focussed on cold-formed steel structures considering local stability, joint performance and modelling under fire and dynamic loading, additive manufacturing, structural optimisation, performance-based seismic design, tubular structures, performance of steel composite structures in fire, steel and timber hybrid structures, the role of steel structures in building adaptability, and design for deconstruction and reuse of steel structures.

Group members:
Ian Burgess, Buick Davison, Shan-Shan Huang, Iman Hajirasouliha, Andrew Liew & Xiang Yun

Earthquake Engineering

Our current research activities cover all aspects of earthquake engineering including seismic hazard and risk assessment, vulnerability assessment, performance-based design, active/semi-active/passive seismic control systems, soil-structure interaction, and development of novel strengthening techniques.

Group members:
Maurizio Guadagnini, Iman Hajirasouliha, Zuhal Ozdemir, Kypros Pilakoutas, Elisabeth Bowman & Giacomo Torelli

Computational Mechanics & Design

Our research involves computer modelling to develop a deeper understanding of the mechanical behaviour of structures and materials and to facilitate the design of more resource efficient constructions.

Group members:
Matthew Gilbert, Zuhal Ozdemir, René de Borst, Luca Susmel, Andrew Liew, Colin Smith, Andy Tyas, Helen Fairclough & Linwei He

Blast & Impact Engineering

Our research covers experimental quantification of high explosive blast loading (including buried charges), high strain rate material characterisation (solids and geomaterials), numerical analysis and machine learning for blast in complex environments, structural response calculations, and development of quick running methods.

Group members:
Sam Clarke, Sam Rigby, Andrew Tyas, Zuhal Ozdemir & Genevieve Langdon

Intelligent Infrastructure

Research focuses on the development and application of digital design and manufacturing methods and innovative monitoring, sensing and analysis techniques to tackle current and future challenges in the field of constructed infrastructure. The aim is to enhance productivity and sustainability, working in close collaboration with practitioners responsible for the design, construction, operation and maintenance of buildings, bridges and other constructed infrastructure. The Intelligent Infrastructure group is affiliated to the Integrated Civil and Infrastructure Research (ICAIR) Centre, which provides excellent facilities for large-scale testing of concrete, masonry, steel and timber components and structures.

Group members:
Matthew Gilbert, Giacomo Torelli & Andrew Liew

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Research projects

Our research builds upon a culture of nurturing and addressing industry needs in collaboration with a range of stakeholders to provide innovative solutions to challenging problems.

Research Themes

Our work is focused across five major research themes, which align our interdisciplinary academic strengths to address some of the key scientific, social and environmental challenges of the new millennium.

• Digital
• Energy
• Hazards
• Infrastructure
• Materials

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Facilities and resources

Our engineering activities make use of a variety of innovative facilities and resources.

Blast & Impact

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Characterisation of Blast Loading (CoBL)

• Measuring reflected pressures from both free-air and buried explosives.
• X-shaped array of 17 Hopkinson pressure bars.
• Able to investigate the effects of confining and mitigating materials on the explosive output.
• Unique equipment world-wide.

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Blast Pad

• General purpose explosives arena for near- and far-field testing. 
• High speed video and zebra wall, for tracking of shock front.
• Tests up to 1000 grams of high explosive are possible.
• Measurements of incident and reflected pressures possible, with world-leading levels of repeatability.

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Applique

• Investigations into the performance of armour systems against buried explosives.
• Benchmark testing for Dstl on new and novel armour systems.
• Tests up to 1000 grams of high explosive are possible.
• Testing done at ½ scale of AEP-55.
• Stereo high speed video possible for back face DIC.

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Internal pressure measurement

• Capable of containing 50 gram high explosive charges. 
• Measurements of internal pressure currently possible, with rapid temperature measurement systems being currently developed

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Large Gas Gun

• 120 mm smooth bore gun.
• Capable of launching a 5 kg mass at up to 600 m/s.
• Containment cell capable of soft capture of projectiles.
• Protective systems up to ~2 x 2 x 1.5 m can be accomodated.

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Fragmentation Cell

• Reinforced, buried chamber
• Capable of internal blasts of up to 500 g of high explosive.
• Containment cell capable of soft capture of fragments. 
• High speed video to determine fragment velocity also possible. 
• Measurements of internal pressure (QSP). 

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SHPB Apparatus

• Compressive testing of materials in unconfined, fully confined and a unique triaxially confined apparatus.
• Range of bars available to test materials from foams up to high strength steels.
• Direct impact, tensile and Taylor testing also possible.

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Structural Testing Facilities/Equipment

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Digital servo-controller

• CONTROL CUBE Digital servo-controller
• SIGNAL CUBE Modular signal conditioning / acquisition system

Servo control actuators

• ESH 1000kN 100mm stroke tension/compression
• Losenhausen 250kN 500kN 150mm stroke tension/compression
• Eland 10kN 600mm stroke 50kN 200mm stroke 130kN 400mm stroke tension/compression

Universal testing machines

• ESH 1000kN 100mm stroke tension/compression with thermal chamber to 200° C
• Shimadzu AGS-X 10kN tension/compression
• Shimadzu AGS-X 300kN tension/compression
• Amsler 100kN tension/compression 400kN 1000kN 2000kN compression

Strong floor

• Capacity 1000kN 3m wide by 8m long. Crane 2T access

Strong frame

• Capacity 500kN frame 6.5m long by 4.5m wide by 4m high. Headroom 5m. Crane 2T access

Material Testing Facilities/Equipment

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Universal testing machines:

• CONTROLS 3000kN compression (suitable for testing cylinders and cubes)
• CONTROLS Flexural frame (suitable for testing standard prisms 100x100mm and 150x150mm square sections)

X-Ray diffraction:

• Siemens X-ray diffractometer

X-Ray fluorescence microscopy:

• Advanced scanning and transmission electron microscopy

Thermal analysis:

• Differential scanning and thermal calorimetry
• Graviometric analysis

Environmental Conditioning Facilities/Equipment

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Oxygen permeability apparatus:

• 6 cells for sample sizes 25mm 50mm 100mm 150mm diameter and 50mm thickness

Chloride permeability apparatus:

• 4 cells for sample size 50mm diameter and 50mm thickness

Porosity measurement apparatus:

• Vacuum saturation

Intermittent salt spray cabinet:

• Timer controls switching spray on/off. Purge rate controllable

Cyclic freeze-thaw cabinet:

• 810 litre cyclic curing cabinet
• Temperature range -25°/+70°C
• Temperature Stability ± 0.1°C
• Humidity control between 10% and 98% ± 1%

Specialized Testing Facilities/Equipment

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Multi-axial compression machine for concrete under elevated temperature (MAC2ET)

• This unique device can deliver three independent principal stresses (up to 400 MPa) on 100mm cubes.
• The precision of the measurement system enables stresses and strains to be detected to within 0.2 MPa and 10 microstrain respectively.

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People

Our dedicated staff that make this research possible.

Academics

Name	Research Discipline	Title
Burgess, Prof. Ian	Steel and Composite Structures	Emeritus Professor of Structural Engineering
Clarke, Prof. Sam	Blast & Impact	Professor in Blast Geotechnics
Davison, Prof. Buick	Steel & Composite Structures	Deputy Head of Department Professor of Structural Engineering
Fairclough, Dr Helen	Computational Mechanics & Design	Lecturer in Structural Engineering
Gilbert, Prof. Matthew	Computational Mechanics & Design Intelligent Infrastructure	Professor of Civil Engineering
Guadagnini, Dr Maurizio	Concrete Structures  Earthquake Engineering Group	Senior Lecturer
Hajirasouliha, Prof. Iman	Earthquake Engineering Group Steel & Composite Structures Concrete Structures	Chair in Structural Engineering
He, Dr Linwei	Computational Mechanics & Design	Lecturer in Structural Engineering
Huang, Dr Shan-Shan	Steel & Composite Structures Concrete Structures	Senior Lecturer in Structural Engineering
Liew, Dr Andrew	Computational Mechanics & Design Intelligent Infrastructure Steel & Composite Structures	Lecturer in Civil and Structural Engineering
Ozdemir, Dr Zuhal	Concrete Structures  Blast & Impact Earthquake Engineering Group	Lecturer in Structural Engineering
Pilakoutas, Prof. Kypros	Concrete Structures  Earthquake Engineering Group	Professor of Construction Innovation
Rigby, Dr Sam	Blast & Impact	Senior Lecturer in Blast and Impact Engineering
Susmel, Prof. Luca	Computational Mechanics & Design	Professor of Structural Integrity
Torelli, Dr Giacomo	Computational Mechanics & Design Intelligent Infrastructure Earthquake Engineering Group	Lecturer in Civil and Structural Engineering
Tyas, Prof. Andrew	Computational Mechanics & Design Blast & Impact	DSTL/Royal Academy of Engineering Research Chair in Blast Protection Engineering
Yun, Dr Xiang	Steel & Composite Structures	Lecturer in Structural Engineering