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Materials

Materials. R. Bates. Contents. What we said that we would do What we have done What is left to do from original list New things to add. What we said that we would do. Thermal conductivity measurements of bulk materials

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Materials

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  1. Materials R. Bates

  2. Contents • What we said that we would do • What we have done • What is left to do from original list • New things to add

  3. What we said that we would do • Thermal conductivity measurements of bulk materials • Gather significant number of samples of existing materials and new materials • Irradiate • Prepare samples with different moisture content • Thermal conductivity measurements of adhesives and co-cured items • Prepare a range of co-cured samples • Prepare a range of adhesive samples • Irradiate • Young's Modulus measurements (in compression, tension and shear) • Collect and prepare samples • Irradiate • Prepare samples with different moisture content • Measurement of coefficient of thermal expansion • Prefect measurement techniques • Collect samples • Irradiate • Prepare samples with different moisture content

  4. What we have done • Thermal conductivity of bulk materials • PocoFoam and Allcomp foam • Measured in-plane and transverse conductivities • Measured in-plane for a range of temperatures (-30oC to 20oC) • Bus Tape • Have not irradiated samples for post-irradiation testing • No moisture absorption work • Thermal conductivity measurements of adhesives and co-cured items • Adhesives: Hysol, Hysol + BN, DC SE4445, IRS 2125 • Co-cured items: CFRP 3ply K13D2U and K13C2Ucyanate ester RS3 resin • Measured • Irradiated Hysol + BN • No moisture absorption work • Need to irradiated DC and IRS (or others) • Not done a proper survey of available adhesives

  5. What we have done • Young's Modulus measurements (in compression, tension and shear) • PocoFoam, Allcomp Foam, CFRP • More work on Allcomp required – Shear measurements • No post irradiation measurements • No moisture absorption work • Measurement of coefficient of thermal expansion • This has not really started

  6. New things to add to list • Thermal test of sandwich under shear stress • Done for PocoFoam, repeat for Allcomp • Foam to pipe interface • What is this resistance really? • What variation do we expect? • Understand in-plane conductivity in CFRP • Does it scale as we expect? • QA testing of CFRP to understand quality of uncured and cured materials • Follow up on Georg’s work • Need to understand available effort • Creep tests of DC4445 joint • Method in place with DMA, need effort at RAL • Strength of facing to honeycomb • Tim is following this work post irradiation • Bend tests of plank samples post irradiation • Tim is following this work

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