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A platform for research: civil engineering, architecture and urbanism
High velocity impact on composite sandwich panels with nano-reinforced syntactic foam core
Abstract In this work, an experimental investigation of the high velocity impact resistance of syntactic foam core composite sandwich panel has been undertaken. The syntactic foams filled with ceramic microballoons of three different sizes and three different volume fractions. Also, to enhance the matrix strength of the foam core, some specimens reinforced with nano particles. The high velocity impact tests have been carried out using a light gas-gun and a 10 mm blunt-head steel projectile and the ballistic limit was measured. The Impact behavior and the failure mechanisms are thoroughly investigated and also the absorbed energy during projectile perforation was correlated to the damaged area of specimens. The test results show that the ballistic resistance decreases with increasing the volume fraction of microballoons and the panel with 40% volume fraction of microballoons has the highest specific perforation energy. Moreover, nano-reinforcing the syntactic foam core increased the ballistic limit velocity up to 10%.
Highlights Increasing the microballoon volume fraction up to 40% will increase the specific perforation energy. The results show that by decreasing the size of microballoons, the ballistic resistance would enhance up to 10%. The failure area of the impacted specimen is limited which is an advantage for post impact applications. The results show that presence of 3 wt% of nanoclay enhances the ballistic resistance about 10%.
High velocity impact on composite sandwich panels with nano-reinforced syntactic foam core
Abstract In this work, an experimental investigation of the high velocity impact resistance of syntactic foam core composite sandwich panel has been undertaken. The syntactic foams filled with ceramic microballoons of three different sizes and three different volume fractions. Also, to enhance the matrix strength of the foam core, some specimens reinforced with nano particles. The high velocity impact tests have been carried out using a light gas-gun and a 10 mm blunt-head steel projectile and the ballistic limit was measured. The Impact behavior and the failure mechanisms are thoroughly investigated and also the absorbed energy during projectile perforation was correlated to the damaged area of specimens. The test results show that the ballistic resistance decreases with increasing the volume fraction of microballoons and the panel with 40% volume fraction of microballoons has the highest specific perforation energy. Moreover, nano-reinforcing the syntactic foam core increased the ballistic limit velocity up to 10%.
Highlights Increasing the microballoon volume fraction up to 40% will increase the specific perforation energy. The results show that by decreasing the size of microballoons, the ballistic resistance would enhance up to 10%. The failure area of the impacted specimen is limited which is an advantage for post impact applications. The results show that presence of 3 wt% of nanoclay enhances the ballistic resistance about 10%.
High velocity impact on composite sandwich panels with nano-reinforced syntactic foam core
Ahmadi, Hamed (author) / Liaghat, Gholamhossein (author) / Charandabi, Sahand Chitsaz (author)
Thin-Walled Structures ; 148
2019-12-30
Article (Journal)
Electronic Resource
English
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