Livrables
Numerical implementation of cohesive zone model for mode I and mode II delamination (plane stress) with detailed R-curves and demonstration of how individual R-curves for adjacent layers can promote parallel cracks and crack arrest. The implementation of the model and its use is presented in a memo.
Fatigue model based on a cohesive lawA computational model to simulate fatigue driven crack growth with focus on reasonable computaional cost. The model will be calibrated and validated with experimental data from subtask 3.2.1. The formulation, implementation, use and validation will be described in a memo.
Advanced algorithms for damage detection from strain measurementsStarting with PCA as baseline algorithm for processing strain data, a review on the latest advances in data analysis methods will be done, and those more promising will be implemented. The deliverable will be a Report summarizing main algorithms, and a comparison of results.
Micromechanical model for fibre peel-off and pull-outA micromechanical simulation model/method to predict the effect of fibre configuration and matrix properties on the cohesive traction - separation law. Based on a representative volume with one or a few fibres bridging two crack faces. Statistical treatment of results generated are used to predict the traction separation law for larger ensembles of fibres. The delivery will be a memo describing the simulation method and the results generated and appropriate results data in ASCII format
LCA database of environmental impacts to inform material selection processLCA database of environmental impacts to inform material selection process. An inventory will be created of the component materials which will form the basis of the composites. This will be informed by the use of background data from the ELCD and Ecoinvent databases. Where partners have already conducted their own LCAs, the information will also be incorporated into the database, where this is compatable. Where there are data gaps, these will be filled by conducting searches of the scientific literature and any published environmental product declarations. Where this is not possible, modelling will be used. All of this information will be incorporated into an excel spreadsheet. A report will accompany this spreadsheet.
Workshop gathering project partners and stakeholders Presentation of DACOMAT achievements Possibilities for exploitation of reults Stakeholder needs input from stakeholders Common roadmap for exploitation
DACOMAT project websiteThe website will be the main external communication tool developed in DACOMAT and will be implemented and updated all along the project duration. The website will publish on a regular basis the current status of the project and main results obtained, in a popularized format, in addition to newsletters that will also be published online. The website will also offer an agenda for coming events where DACOMAT partners will be present
project business case workshop 1Workshop gathering project partners and stakeholders Presentation of DACOMAT achievements and further plans Possibilities for exploitation of reults Stakeholder needs input from stakeholders Common roadmap for implementation
Final LCA and LCCA report based upon selected technologies in demonstrators When the final materials choices have been made for the demonstrators it will then be possible to finalise the LCA studies Based upon the environmental exposure and performance of the composites it will be possible to make informed estimates of the likely behaviour in service The LCA and LCCA study will incorporated the whole of the life cycle and include end of life scenarios regarding reuse or ultimate disposal The output for this deliverable will be in the form of a report
Interim LCA and LCCA report based upon technology selection and modelled processesInterim LCA and LCCA report based upon technology selection and modelled processes. Based upon the materials selection by the DACOMAT partners and studies of the composites, it will be possible to model the whole life of the materials at a coarse level using both LCA and LCCA. This modelling will involve the use of different scenarios to identify ‘hot-spots’ and allow for a sensitivity analysis to be conducted. This information can be used to ‘fine-tune’ the materials decisions before the demonstrators are made. A preliminary baseline study of conventional technologies will also be conducted at this time. The deliverable will be in the form of a report.
Report on the mixed mode interface cohesive laws using a new test methodA new microscale testing method based on single fibres being peeled of a matrix surface in scanning electron microscope will be developed. Various peeling angles will be tested and details of the displacement field of the fracture process zone where the fibre detaches will be documented and used for the determination of a microscale mixed mode cohesive law. The delivery will be a report describing the test specimen design, manufacturing testing fixtures, testing procedures and results for 1-2 different fibre/matrix interface treatments.
Report on mode II interface cohesive law using an improved single fibre fragmentation testThe state-of-the-art single fibre fragmentation test method will be improved to extract additional information to be applied in recent advanced micromechanical models able to separate the interface fracture energy from the interface friction. Mode II fracture energy will be measured and be used in WP1. The delivery will be a memo describing the improved evaluation method and the results generated.
Characterization of fracture mechanisms, fibre bridging and correlation to AE activityReport on the correlation of AE signals with the modified fracture properties. Physical characteristics of the fracture mechanism relating to fracture resistance, such as the degree of fibre bridging in a particular fracture process zone, can be inferred via differing AE waveform characteristics from cracks with a high or low degree of fibre bridging.
Determining the governing factors for promotion of secondary delamination frontsReport describing the governing factors for promotion of secondary delamination fronts based on results obtained with numerical simulations with varying choices of R-curves, laminate layup and load scenario.
Report on standardisation and guidelines of DACOMAT materialsFinal report about modelling activities and results
A report summarizing all work from WP1 on Micromechanical assessment of fibre bridging Cohesive zone modelling Fatigue modelling Structural optimisation including recommmendation and worked examples on how the developed models can be used in damage controlled design and evaluation of structural integrity and remaining useful life of damaged composite structures
Publications
Auteurs:
James L. Thomason, Peter G. Jenkins, Georgios Xypolias
Publié dans:
Composite Interfaces, Numéro 09276440, 2021, Page(s) 695-709, ISSN 0927-6440
Éditeur:
Taylor & Francis
DOI:
10.1080/09276440.2021.2011593
Auteurs:
James L Thomason, Georgios Xypolias
Publié dans:
Polymers, 2023, ISSN 2073-4360
Éditeur:
MDPI
DOI:
10.3390/polym15040835
Auteurs:
R.K. Joki, F. Grytten, B. Hayman, B.F. Sørensen
Publié dans:
Engineering Fracture Mechanics, Numéro 239, 2020, Page(s) 107274, ISSN 0013-7944
Éditeur:
Pergamon Press Ltd.
DOI:
10.1016/j.engfracmech.2020.107274
Auteurs:
James L Thomason, Georgios Xypolias
Publié dans:
Composite Interfaces, Numéro 09276440, 2022, ISSN 0927-6440
Éditeur:
Taylor & Francis
DOI:
10.1080/09276440.2022.2116842
Auteurs:
Peter G Jenkins, David Bryce, Georgios Xypolias, James L Thomason
Publié dans:
IOP Conference Series: Materials Science and Engineering, Numéro 942, 2020, Page(s) 012028, ISSN 1757-899X
Éditeur:
IOP Conference Series: Materials Science and Engineering
DOI:
10.1088/1757-899x/942/1/012028
Auteurs:
Stergios Goutianos, F. Sørensen Bent
Publié dans:
IOP Conference Series: Materials Science and Engineering, Numéro 388, 2018, Page(s) 012010, ISSN 1757-8981
Éditeur:
IOP Publishing
DOI:
10.1088/1757-899x/388/1/012010
Auteurs:
Stergios Goutianos
Publié dans:
SN Applied Sciences, Numéro 1/5, 2019, ISSN 2523-3963
Éditeur:
Springer
DOI:
10.1007/s42452-019-0499-z
Auteurs:
James Thomason
Publié dans:
Polymer Testing, Numéro 01429418, 2022, Page(s) 107591, ISSN 0142-9418
Éditeur:
Elsevier BV
DOI:
10.1016/j.polymertesting.2022.107591
Auteurs:
Frode Grytten; Bent F. Sørensen; Stergios Goutianos; Reidar Kvale Joki; Jens Kjær Jørgensen
Publié dans:
Grytten , F , Sørensen , B F , Goutianos , S , Joki , R K & Jørgensen , J K 2021 , ' A micromechanical model of fiber bridging including effects of large deflections of the bridging fibers ' , Composite Structures , vol. 258 , 113405 . https://doi.org/10.1016/j.compstruct.2020.113405, Numéro 3, 2021, ISSN 1879-1085
Éditeur:
Elsevier
DOI:
10.1016/j.compstruct.2020.113405
Auteurs:
Alfredo Güemes, Antonio Fernandez-Lopez, Angel Renato Pozo, Julián Sierra-Pérez
Publié dans:
Journal of Composites Science, Numéro 4/1, 2020, Page(s) 13, ISSN 2504-477X
Éditeur:
MDPI
DOI:
10.3390/jcs4010013
Auteurs:
Cederløf, Hottentot
Publié dans:
DCAMM 17th Internal Symposium, Vejle, Denmark,, Numéro 7, 2019
Éditeur:
DCAMM 17th Internal Symposium, Vejle, Denmark
DOI:
10.5281/zenodo.3669930
Auteurs:
Cheng Fang, Daan Jonas Hottentot Cederløf, Alexander Bardenshtein, Yukihiro Kusano
Publié dans:
IOP Conference Series: Materials Science and Engineering, Numéro 942, 2020, Page(s) 012030, ISSN 1757-899X
Éditeur:
IOP Conference Series: Materials Science and Engineering
DOI:
10.1088/1757-899x/942/1/012030
Auteurs:
Bent F Sørensen
Publié dans:
IOP Conference Series: Materials Science and Engineering, Numéro 942, 2020, Page(s) 012004, ISSN 1757-899X
Éditeur:
IOP Conference Series: Materials Science and Engineering
DOI:
10.1088/1757-899x/942/1/012004
Auteurs:
Goutianos, Stergios; Sørensen, Bent F.; Jørgensen, Jens K.; Van Hoof, Frederic; Piiroinen, Olli; Hung, Owen
Publié dans:
INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS (ICCM22), Numéro 22, 2019, Page(s) 7
Éditeur:
http://iccm22.com/
DOI:
10.5281/zenodo.3578297
Auteurs:
Stergios Goutianos, Bent F. Sørensen
Publié dans:
6th European Conference on Computational Mechanics (ECCM 6), 2018
Éditeur:
ECCOMAS
Auteurs:
Stergios Goutianos, Bent F. Sørensen
Publié dans:
ECCM18 - 18th European Conference on Composite Materials, 2018
Éditeur:
ECCM
Auteurs:
A. Güemes, M. Reyes, J. Garcia-ramirez, C. Aguilar, A. Fernandez-Lopez
Publié dans:
10th International Symposium on NDT in Aerospace, 24 – 26 Oct 2018, Dresden, Germany, 2018
Éditeur:
ndt.net
Auteurs:
Peter G. Jenkins, Liu Yang, James L. Thomason
Publié dans:
ECCM18 - 18th European Conference on Composite Materials, 2018
Éditeur:
European Society for Composite Materials
Auteurs:
Daan J Hottentot Cederløf, Bent F Sørensen
Publié dans:
IOP Conference Series: Materials Science and Engineering, Numéro 942, 2020, Page(s) 012029, ISSN 1757-899X
Éditeur:
IOP Conference Series: Materials Science and Engineering
DOI:
10.1088/1757-899x/942/1/012029
Auteurs:
G Xypolias1, J Thomason1 and L Yang1
Publié dans:
IOP Conference Series: Materials Science and Engineering, 2020
Éditeur:
IOP science
DOI:
10.1088/1757-899x/942/1/012031
Auteurs:
Grytten, Frode; Sørensen, Bent F.; Goutianos, Stergios; Joki, Reidar Kvale; Jørgensen, Jens Kjær
Publié dans:
Grytten , F , Sørensen , B F , Goutianos , S , Joki , R K & Jørgensen , J K 2019 , ' Micromechanical model of cross-over fiber bridging ' 9th International Conference on Composites Testing and Model Identification , Luleå , Sweden , 27/05/2019 - 29/05/2019 , ., Numéro 9, 2019
Éditeur:
LTU Luleå, Sweden
DOI:
10.5281/zenodo.3784691
Auteurs:
Stergios Goutianos, Bent F. Sørensen
Publié dans:
ESMC 2018 – 10th European Solid Mechanics Conference, 2018
Éditeur:
ESMC
Auteurs:
Jørgensen, Jens Kjær; Heggenhougen, Tone
Publié dans:
AAAS 2018 Annual Meeting, Numéro 4, 2018
Éditeur:
AAAS 2018 Annual Meeting
DOI:
10.5281/zenodo.3635341
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