Speaker
Description
Carbon fiber reinforced resin matrix composites (CFRP) are widely used in cryogenic engineering due to their light weight, high strength and corrosion resistance. Practical applications often involve processing CFRP structural components with holes. However, the presence of these holes have an important effect on the overall mechanical properties of the material. In this study, we introduce the acoustic emission (AE) technique to characterize the mechanical properties of materials within the temperature range of 20K to 300K. Through the application of acoustic emission (AE) technology, the static load axial tensile damage process of carbon fiber composite laminates containing holes in cryogenic environments was monitored in real time. The effects of opening shape and size on mechanical behavior and failure mechanism of carbon fiber composite laminates were studied. Based on the analysis of experimental data, the range of peak frequency (PF) in different damage stages was determined, and the tensile failure mechanism of porous carbon fiber composite laminates was analyzed with AE characteristic parameters.
| Submitters Country | China |
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