Low Velocity Impact Response on GFRP and GF-SMP Panels in Structural and High Frequency Bands
Low Velocity Impact Response on GFRP and GF-SMP Panels in Structural and High Frequency Bands作者机构：Civil Engineering Department Visvesvaraya Technological University Belagavi India Structural Technological Division CSIR-National Aerospace Laboratories Bangalore India Visvesvaraya Technological University Belagavi India
出 版 物：《Advances in Aerospace Science and Technology》 (航空科学与技术（英文）)
年 卷 期：2020年第5卷第2期
页 面：58-70页
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
主 题：Impact Low Velocity PZT Patches GFRP Composite Laminate Transient Dynamics
摘 要：A low velocity impact response study has been carried out on glass fibre composite laminates, made up of regular aircraft grade epoxy (GFRP) and shape memory polymer (GF-SMP). Under various impact loading intensities (4J, 6J, 12J), the responses are measured by a network of PZT (Lead Zirconate Titanate) sensors. A signal analysis methodology is subsequently developed to process the very high frequency (60 MHz) sampled data. In two frequency bands, namely 0 - 2000 Hz and 0 - 100 KHz, the results are examined and the transient dynamic behaviours of the composite laminates are evaluated. It is observed that both the laminates have generated the high frequency structural waves (0 - 100 KHz), which can be exploited to examine the BVID. However, GF-SMP laminate has shown some advantage in terms of energy dissipation in the structural frequency band (2000 Hz). Further, the GF-SMP laminate has demonstrated its capability to generate very high frequency structural waves, which could carry the damage information like BVID due to impact event to nearby sensors for impact event monitoring and health assessment.
维普期刊数据库