The introduction of new composite material systems and cost-efficient manufacturing routes requires the development, or adaptation, of existing material testing standards that can objectively quantify key material properties for design. The properties of discontinuous, randomly oriented, non-woven composites are inherently more variable than their established continuous fibre-reinforced counterparts, demanding some different approaches to testing. We adapted standard tests to better represent the material with significance given to test geometry, load introduction, failure modes and practical testing protocols. The material response to static and cyclic mechanical, physical thermal tests and exposure to various environmental conditions, was studied. We found that standard test procedures require some modification, and data interpretation must be undertaken very carefully.
Kumar, Karthik K.Heath, DavidHutchinson, Allan
Year of publication: 2018Date of RADAR deposit: 2019-04-18