Elevated-temperature Application of the IITRI Compression Test Fixture for Graphite/polyimide Filmentary CompositesNational Aeronautics and Space Administration, Scientific and Technical Information Branch, 1979 - Composite materials - 45 pages |
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0.2-percent strain 25 laminate B-staged Carbon Fibre Reinforced cm K MPa composite at 589 composite at room composite materials Compression diagrams COMPRESSIVE PROPERTIES compressive strength Effect of width elevated temperatures 589 ELEVATED-TEMPERATURE APPLICATION end blocks ET,I Experimental Regression analysis failure Fibre Reinforced Plastics GPa Stress Gr/PI graphite/polyimide high as 589 HTS-1/PMR-15 SPECIMENS HTS-2/PMR-15 composite HTS-2/PMR-15 material HTS-2/PMR-15 specimens IITRI test method laminate orientation Laminate Test Langley Research Center load alignment matrix measured ultimate strength NASA Number of plies percent plies Laminate thickness Poisson's ratio polynomial psi Figure replicate tests room and elevated Scatter of replicate shown in figure specimen bending specimen fabrication specimen width specimens failed strain gages strengths and initial Strip heaters TABLE tangent modulus Test 14 test region test specimen Thermocouple trapezoidal wedge collets U.S. Customary Units ultimate compressive stresses Unidirectional Carbon Fibre Units Test Number vacuum variation in back-to-back Δε ווו