Browsing by Author "Asareh, Mehdi"

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    Dataset for paper - Optimisation of an in-process lineal dielectric sensor for liquid moulding of carbon fibre composites
    (Cranfield University, 2020-11-04 09:22) Mesogitis, Tassos; Asareh, Mehdi; Skordos, Alex; Maistros, George; Lira, Christian
    Data: -RTM experiment - 4 bar clamping pressure.xlsx Excel spreadsheet containing the impedance/admittance signals and corresponding covered length for the the PI-LD lineal sensor alongside the visual flow front measurements using video for the 4 bar clamping pressure RTM trial -RTM experiment - 7 bar clamping pressure.xlsx Excel spreadsheet containing the impedance/admittance signals and corresponding covered length for the PI-LD and NyPU lineal sensor, the impedance signals for the PI-LD cure sensor, and the temperature evolution used for the kinetics/specific heat capacity evolution for the 6 bar clamping pressure RTM trial -Air sensor tests.xlsx Excel spreadsheet containing the impedance and admittance spectra of 3 PU sensors in air Models: -FLEXPDE sensor in air.dat FLEXPDE script for 2D FE complex electric field model of sensor in air -FLEXPDE sensor in resin.dat FLEXPDE script for 2D FE complex electric field model of sensor in resin Images: - Flow front mm_process time min.zip Compressed set of images used to identify the flow front position in the 4 bar clamping pressure RTM trial. Files are named to indicate the flow front position and process time. For example, file 150-1.70 is the image corresponding to a flow position of 150 mm at 1.70 min.
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    Electrical and mechanical behaviour of copper tufted CFRP composite joints
    (SAMPE, 2021-09-29) Asareh, Mehdi; Pouchias, A.; Zitoun, A.; Yasaee, Mehdi; Kazilas, M.; Skordos, Alexandros A.
    Electrical continuity of dissimilar joints controls the current and thermal pathways during lightning strike. Tufting using carbon, glass or Kevlar fibres is a primary to introduce through thickness reinforcement for composite structures and assemblies. Replacing the conventional tuft thread material with metallic conductive wire presents an opportunity for enhancing current dissipation and deal with electrical bottlenecks across dissimilar joints. Simulation of the electro-thermo-mechanical behaviour of joints was carried out to assess the influence of metallic tufting. The finite element solver MSC.Marc was utilised. Mechanical models incorporate continuum damage mechanics (CDM) to capture progressive damage in both composite and aluminium components of the joint. The mechanical models were coupled with electrical and thermal simulations of reference and copper tufted carbon fibre epoxy composite joints to assess both the lightning strike response and mechanical robustness of the assembly as well as the improvements offered by tufting. Validation of the model is based on electrical conduction and temperature measurements alongside delamination tests.
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    Manufacture of a rotor blade pitch horn using binder yarn fabrics
    (International Committee on Composite Materials, 2009-07-31) Weiland, F.; Weimer, C.; Katsiropoulos, C. V.; Pantelakis, S. G.; Asareh, Mehdi; Cartié, Denis; Mills, Andrew; Skordos, Alexandros A.; Dufort, L.; De Luca, P.; Pickett, A. K.
    The use of binder yarn fabrics in rotor blade applications is investigated in this work. A preforming procedure is incorporated in manufacturing, resulting in higher degree of automation and a reduction of process steps. The performance of the process is evaluated with respect to cost savings compared to prepregging technologies.