Materials

Items to cover Monthly phone meetings started (2 so far) –Details on Twiki –Item check list to keep us on track – included at end of slides Some items from list Report –Yet another delay - sorry BN loaded Hysol –New material ordered from Momentive with bigger grains -> higher conductivity –Order placed 8/3 ? – hopefully have soon Poco-S/S interface under shear –Mechanical test sample proved jig –Real measurements next week – aim for first data for AUW Thermal conductivity of Allcomp Foam –Previous measurements were probably wrong –Material appears isotropic with k=70 W/mK measured in through & in-plane Glue creep measurements –Standards ordered and test spec being written Foam Modules tests –Difficult problem to understand correctly. –Talking with Ryan Page from “low mass” project viz modelling Cleavage test of glued CFRP samples –Need new samples Radiation tests –Big late – working on this for AUW

WP4 (Mechanics) Materials task action list Updated S Canfer/S Jones 8 March 2011Update after 8th March 2011 meeting ItemWhoDates Write up previous resultsRLB (with input from others as requested)First draft by March 25 th Write up 2011 resultsRAL (with input from others)First draft by Dec 1 st Thermal conductivity measurements Thermal conductivity of thin pieces of Allcomp foam in cold to understand if pervious result is repeatable Isaac, Fiona, RLB (Glasgow)End March. Progressing well and expect to be on time. Measurement of poco foam thermal conductivity after a shear force. Look at different glue loadings Isaac, Fiona and RLBMechanical trails done early March. End of March for first measurements Measurement of Allcomp foam thermal conductivity after a shear force. Look at different glue loadings Isaac, Fiona and RLBEnd April (if above works) BN loading of Hysol Can we improve thermal conductivity with particle size mix or different wetting agents RLB to talk with companies Isaac/Fiona to make measurements Send sample to Graham to cross check this. Mid Feb to talk with companies and identify items to purchase. End Feb ordered new BN – done start March. End March to make measurements Waiting on material Degassing of BN loaded glue at RAL and measured at Glasgow – issues with gas content in the glue affecting the conductivity. RAL and GlasgowNeed more BN. 2 nd week of April. CNT loaded HysolRLB and QMU (possibly)End March to find sources of glue/CNT End April to have samples End May to make measurements Foam to pipe studies. Samples from real pipe to foam joints to be measured QMUwaiting on Glasgow numbers from Poco to s/s and CFPR numbers

Studies of Module to Stave glue DC SE4445 thermal conductivityRLB, Isaac Maybe some help from Liverpool with their LineSourceProbeMeasurement Done. Thermal conductivity of Intertronics IRS 2125 GlasgowSlight delay - April DC SE4445 creep test. Need to understand if modules will move with time if glued with DC RAL/Glasgow Need to understand technique RAL (Simon) to advise on technique and perform tests. If tests are portable to Glasgow, the Glasgow able to perform long term testing ASTMs ordered, SHJ has written a technical note on creep testing End April Market survey of other glues to glue silicon detector. RAL –to look into options. Discussed with MGEnd March – on going Testing of other gluesRAL or Glasgow for creep (see DC creep tests item) End April/May Measurements of CTE Measurement of CTE using Strain gauges. Look at foams, glues and foams filled with glue before irradiation Glasgow (and Liverpool?)End of April – not started in Glasgow. Depends on calls on Fiona’s time.

Mechanical tests Poco foam – outstanding issues on modulus data. RAL (Simon/Stephanie)Parked for now, this is a huge area for study CFPR stress/strain relationship under tension. Measure with strain gauges RAL (Simon/Stephanie)Familiar with test methods, now a standard test for RAL as and when required. To be written up for a Monday meeting Bend tests of corrugated samplesRAL/OxfordTo do Cleavage test of glued CFRP samples with DCB. RAL/Tim JonesDone, but supplied samples were too thin. To contact Tim Jones for new samples Thermal expansion tests of foams – Use the DMA with quartz loading system RALQuartz probe away for repair Modulus using DMA to compare technique developed by Ryan page for SiC foam to Poco & Allcomp foams RAL/Ryan PageTo do

Radiation testing Define a list of items to irradiateRLB to coordinate – input from RAL/QMU/Liv/Oxford etc To include CFRP End March – For ATLAS upgrade week. Potential for AIDA collaboration Make itemsAs defined by above (RAL/Liv/Oxford)End April Potential for AIDA collaboration Irradiate itemsPS (Liverpool/Sheffield/QMU)May Potential for AIDA collaboration Thermal test of itemsGlasgow/QMU2-3 months from available. Note still waiting on samples to be shipped for June 2010! Mechanical test of itemsRAL2-3 months from available Studies of different CFPR samples Look at different gluesOxford/RAL? Studies of CFRP prepreg with DSC and FTIR for QA on uncured and cured materials RAL/OxfordLonger term project, Steve Robertson working with Georg V.