A5061846337- Mechanical Behavior of Composites
- Fire dynamics and safety research
- Flame retardant materials and properties
- Fiber-reinforced polymer composites
- Fire effects on concrete materials
- Smart Materials for Construction
- Combustion and Detonation Processes
- Graphene and Nanomaterials Applications
- Nanoparticles: synthesis and applications
- Advanced Measurement and Detection Methods
- Carbon Nanotubes in Composites
- Forensic Fingerprint Detection Methods
- Microplastics and Plastic Pollution
- Natural Fiber Reinforced Composites
- Thermal and Kinetic Analysis
- Epoxy Resin Curing Processes
- Spectroscopy and Chemometric Analyses
Defence Science and Technology Laboratory
2021-2025
Government of the United Kingdom
2023-2024
ABSTRACT This study investigates the combined thermal and mechanical response of pre‐loaded woven carbon‐epoxy U‐channels subjected to radiant heating conditions similar those experienced by aircraft structures in event a fire. A custom‐built laboratory scale test rig was used combine loads boundary conditions. The main experimental aim measure failure times, modes, displacement temperature distribution U‐channels. results show that undergo multiple phases decomposition when exposed heat....
This study uses a small-scale apparatus to investigate the influence of carbon fibre orientation and heat flux on thermomechanical response reinforced polymer (CFRP). The proposed test allows behaviour, relating mechanical performance degradation with particular surface temperature gradient CFRP, be investigated. motivation this is understand load-bearing CFRP materials during heating using cone heater. Experiments were performed specimens produced in four unique lay-ups their bending...
The thermal stability of carbon fibre-reinforced polymer (CFRP) and its constituents (neat epoxy resin fibre) are studied in terms mass loss using a thermogravimetry technique at different heating rates two atmospheric conditions (air pure nitrogen). By interpreting the over temperature range 25–900 °C, it was possible to identify specific mechanisms degradation. In an oxygen-free nitrogen atmosphere, degradation used as composite's matrix is strongly inhibited up 400 after which undergoes...
Abstract This study investigates the influence of fibre orientation and heat flux on post‐fire (residual) load‐bearing properties carbon fibre‐reinforced polymer (CFRP) laminates. As a result, deep insight into response is gained, which necessary to fully understand assess advantages CFRP laminates containing different orientations for use in structures. Specimens were produced from three orientations, exposed varying fluxes up 40 then loaded either tension or three‐point bending at ambient...
Abstract A novel laboratory scale testing equipment has been designed and developed, which combines impact heat/fire conditions to enable the of composite laminates, including ability capture debris/particles released during test. This incorporates a pendulum impactor create whilst sample is exposed cone heater at particular heat flux for specified period time. protocol samples under different capturing particles released, both from front back faces, along with effluents provided. carbon...
Nanomaterials – reinforced carbon fibre composites during fire and impact can release micro/nano particles in size ranges that deposit all regions of the respiratory tract or be swallowed, creating potential health hazards.
This study examines the effects of heat and fire on physical, mechanical electrical properties carbon fibre those in reinforced composites (CFRCs). Carbon fibres were exposed to controlled heating (thermogravimetric analysis (TGA) a tube furnace) inert air (oxygenated) environments simulated (cone calorimetry at 35-75kWm-2 jet (propane burner) 116kWm-2) atmospheres. While atmospheres there was minimal effect fibres, but an oxygenated environment, significant oxidation began temperatures...
This work investigates the aerosols emitted from carbon fibre-reinforced epoxy composites (CFC) incorporating nanomaterials (nanoclays and nanotubes), subjected to simultaneous fire impact, representing an aeroplane or automotive crash. Simultaneous impact tests were performed using a previously described bespoke testing methodology with capability collect particles released front/back faces of impacted plus effluents. In this has been further developed by connecting Dekati Low Pressure...
The thermo-oxidative and thermal stability of carbon fibre-reinforced polymer (CFRP) its constituents (neat epoxy resin fibre) are studied in terms mass loss using a thermogravimetry technique at different heating rates two atmospheric conditions (air pure nitrogen). By interpreting the over temperature range 25 to 900°C, it was possible identify specific mechanisms degradation. In an oxygen-free, nitrogen atmosphere, degradation used as composite’s matrix is strongly inhibited up 400°C,...