🗊Презентация Self-ameliorating inkjet printed composites

Science and Manufacturing: Ingredients for Innovation Professor Alma Hodzic AMRC Research Director 17th December 2013 AFOSR, Washington DC

System: Custom design Nikon/Metris dual source high energy micro-focus walk-in room system System: Custom design Nikon/Metris dual source high energy micro-focus walk-in room system This scan used the 225kV source with and 1621 PerkinElmer cesium-iodide detector To enhance contrast a Mo target was used and peak voltage was set at 55kV, with no pre-filtration The current was set at 157uA (8.6W) and the panel brought forwards so that the source-imaging distance was ~700mm. At this power, the focal spot is spread slightly to prevent melting of the target - however, since the voxel size at this magnification was 7.6microns, we could afford to gain flux at the expense of focal spot size, without affecting the resolution of the reconstruction. 3142 projections were taken over the 360 degree rotation, with 4 frames per projection being averaged in order to improve signal to noise Exposure time of each projection was 354ms and the gain set to 30dB To reduce the effect of ring artefacts, shuttling was used with a maximum displacement of 5 pixels

Can we accurately print thermoplastics in AE accredited CFRPs?  Can we accurately print thermoplastics in AE accredited CFRPs?  Are there compatible SH polymers in the incompatible families?  Are structural static and dynamic properties preserved?  Is damage tolerance improved?  Are discrete patterns more desirable?  Are shear properties improved?  Is there improvement after 2nd thermal treatment?  Is machining qualitatively improved?  Did we manage to avoid adding any parasitic weight?  Did we conform to the existing supply chain?  Did we increase the value of the product?  Did we pioneer a new improved system? 

Sheffield, Bristol, South Carolina (McNair) and Clemson: Sheffield, Bristol, South Carolina (McNair) and Clemson: R1: manufacturing of novel IJPCs (Smith, Hodzic, Scaife, Tarbutton, van Tooren) R2: embedding novel sensors in IJPCs (Giurgiutiu, Tarbutton, Smith, Hodzic) R3: grafting novel polymers for IJPCs (Luzinov, Kornev, Smith) R4: watermark composites (Smith, van Tooren, Majumdar) R5: multiscale ultrasonic inspection in woven IJPCs (Banerjee, Giurgiutiu, Smith, Hodzic, van Tooren) R6: developing FEA from x-ray tomography of IJPCs (Pinna, Deng, Majumdar, Smith, Hodzic, van Tooren) R7: validation of damage models in IJPCs using SHM and 3D NDT CSIC (Hodzic, Smith, Pinna), DRG (Worden, Manson) from Sheffield and NDT (R. Smith) from Bristol – white paper submitted to AFOSR R8: machining of IJPCs, influence on durability (Hodzic, Scaife, Pinna, Smith) R9: integration of R1-8

Innovation and Research Manufacture/Characterization/Certification

FW: NDT at high frequencies Prof. Robert Smith 3D Characterisation of composite materials Ultrasonic response Inversion methods give actual material properties Fibre vector maps Fibre volume fraction Porosity Frequency response Distinguish between types