In my January 2024 column, I reported on a new ASTM test method for use in assessing the damage tolerance of sandwich composites under compression loading: the sandwich compression-after-impact (CAI) ...

Figure 1. ASTM D8287 sandwich CAI test fixture and specimen. Photo Credit, all images: Dan Adams Damage tolerance testing of composites refers to the testing of specimens with a centrally located ...

Requirements, analysis methodologies, and selected test data for impact damage tolerance and fail-safety of composite sandwich panels are reviewed and discussed. Characteristic impact damage, failure ...

Synthetic-quartz-composite mixtures cast to tolerance and use less energy than casting iron. The dark days of energy-hogging, poorly toleranced cast parts are over. A new casting method dampens ...