During the last decade, ecological concerns have resulted in a renewed interest in natural materials, and issues such as sustainability and eco-efficiency have gained more and more attention, thus controlling the development and introduction of new materials, products and processes. Plant fibers are currently being evaluated as environmentally friendly and low cost alternatives for glass fibers in engineering composites and structures. However, serious concerns are still present on the level of mechanical performance that can be achieved with these materials. In this regard, applying acoustic emission (AE) to monitor monotonic mechanical loading can provide useful information. In this work, three case studies on AE monitoring of mechanical tests of plant-fiber composites are presented and discussed. The fibers used as reinforcement are jute (case 1), celery (case 2) and phormium (case 3). As a whole, AE data analysis can yield some indications about the effectiveness of reinforcement, the prevalent mode of failure and the selection of different configurations, to obtain the best mechanical performance.
Natural Fiber Composites Monitored by Acoustic Emission
SANTULLI, CARLO;
2008-01-01
Abstract
During the last decade, ecological concerns have resulted in a renewed interest in natural materials, and issues such as sustainability and eco-efficiency have gained more and more attention, thus controlling the development and introduction of new materials, products and processes. Plant fibers are currently being evaluated as environmentally friendly and low cost alternatives for glass fibers in engineering composites and structures. However, serious concerns are still present on the level of mechanical performance that can be achieved with these materials. In this regard, applying acoustic emission (AE) to monitor monotonic mechanical loading can provide useful information. In this work, three case studies on AE monitoring of mechanical tests of plant-fiber composites are presented and discussed. The fibers used as reinforcement are jute (case 1), celery (case 2) and phormium (case 3). As a whole, AE data analysis can yield some indications about the effectiveness of reinforcement, the prevalent mode of failure and the selection of different configurations, to obtain the best mechanical performance.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
