693.932 PEOPLE
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| Naji, M. |
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| Petrov, R. H. | Madrid |
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Kratz, James
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (46/46 displayed)
- 2024Effect of pre-curing on thermoplastic-thermoset interphasescitations
- 2024Microstructural analysis of unidirectional composites: a comparison of data reduction schemes
- 2024CFRP layer-by-layer curing using research-based automated deposition systemcitations
- 2024Effects of accelerated curing in thermoplastic particle interleaf epoxy laminatescitations
- 2024Annotator bias and its effect on deep learning segmentation of uncured composite micrographs
- 2024The effect of semi-curing on neat resin mode I fracture propertiescitations
- 2024Optimization and mechanical response of modular infusion compaction and normalization
- 2023A Feasibility Study for Additively Manufactured Composite Tooling
- 2023Effects of heat transfer coefficient variations on composite curingcitations
- 2023Automatic process control of an automated fibre placement machinecitations
- 2023Additively manufactured cure tools for composites manufacturecitations
- 2023In-situ defect detection and correction using real time automated fibre placement
- 2023The influence of key processing parameters on thermoset laminate curingcitations
- 2023The effect of convolutional neural network architectures on phase segmentation of composite material X-ray micrographscitations
- 2022Large Scale Forming of Non-Crimp Fabrics for Aerostructurescitations
- 2022Effects of heat transfer coefficient variations on composite curingcitations
- 2022The Effect of Process Parameters on First Ply Deposition in Automated Fibre Placementcitations
- 2022Tracking consolidation of out-of-autoclave prepreg corners using pressure sensorscitations
- 2022A FEASIBILITY STUDY OF ADDITIVELY MANUFACTURED COMPOSITE TOOLING
- 2021Modelling compaction behavior of toughened prepreg during automated fibre placement
- 2021Lab-based in-situ micro-CT observation of gaps in prepreg laminates during consolidation and curecitations
- 2020Predicting consolidation-induced wrinkles and their effects on composites structural performancecitations
- 2020Experimental characterisation of the in-plane shear behaviour of UD thermoset prepregs under processing conditionscitations
- 2019Modelling of the in-plane shear behavior of uncured thermoset prepreg
- 2019Heat transfer simulation of the cure of thermoplastic particle interleaf carbon fibre epoxy prepregscitations
- 2018Experimental Characterisation of In-plane Shear Behaviour of Uncured Thermoset Prepregs
- 2018Experimental and numerical investigation of full scale impact test on fibre-reinforced plastic sandwich structure for automotive crashworthiness
- 2018Out-of-Autoclave Prepreg Processingcitations
- 2017Improvement of the in-plane crushing response of CFRP sandwich panels by through-thickness reinforcementscitations
- 2017Resource-friendly carbon fiber compositescitations
- 2017An experimental technique to characterize interply void formation in unidirectional prepregscitations
- 2017Resource-friendly carbon fiber composites:combining production waste with virgin feedstockcitations
- 2017Void modelling and virtual testing of prepreg materials from 3D image capture
- 2017Tracking the evolution of a defect, characteristic of AFP layup, during cure with in-process micro-CT scanning
- 2016Predicting wrinkle formation in components manufactured from toughened UD prepreg
- 2016Reclaiming in-process composite waste for use in energy absorbing sandwich structures
- 2016Understanding and prediction of fibre waviness defect generation
- 2016Developing cure kinetics models for interleaf particle toughened epoxies
- 2016Visualising process induced variations in the manufacture of tufted sandwich panels
- 2015Towards the development of an instrumented test bed for tufting visualisation
- 2014Vacuum-bag-only prepreg processing of honeycomb structures
- 2014Vacuum-Bag Manufacturing of Honeycomb Structures
- 2014Vacuum-bag-only prepreg processing of honeycomb structures:From lab-scale experiments to an aircraft demonstrator
- 2013Thermal models for MTM45-1 and Cycom 5320 out-of-autoclave prepreg resinscitations
- 2013Anisotropic air permeability in out-of-autoclave prepregscitations
- 2010Out-of-autoclave honeycomb structures
Places of action
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article
Effects of accelerated curing in thermoplastic particle interleaf epoxy laminates
Abstract
Faster heating rates of 10 °C/min and higher process temperatures of 210 °C were applied to the commercial M21 resin system. The total process time was reduced by two-thirds while achieving the same degree-of-cure in the epoxy. Thermal analysis and hot-stage microscopy showed that the thermoplastic interleaf particles melt at around 15 °C above the manufacturer's recommended 180 °C curing temperature. A short dwell at 180 °C was found to prevent the thermoplastic particle from mixing with the thermoset pre-polymer before ramping to the accelerated curing temperature of 210 °C. Such interaction was found to decrease the glass transition temperature by 13–45 %, but increase the mode I delamination resistance by 70–105 %, respectively. The results demonstrate that accelerated curing of interleaf systems can shorten cycle time and produce a range of physical and mechanical properties from a single base material, opening the design space to new and optimised composite structures.