Investigation of vibro-impact resistance of fiber reinforced composite plates with polyurea coating with elastic constraints

Recent Developments in Polyurea Research for Enhanced Impact Penetration Resistance and Blast Mitigation

“…To accommodate various substrates or structures, the ratio of hard and soft segments in polyurea can be adjusted by modifying the type and content of isocyanate and amino compounds [21][22][23][24][25][26]. Moreover, the incorporation of nano or micron particles and reinforcing fibers serves to enhance the mechanical properties and blast resistance of polyurea composites [11][12][13][14][15][16][17][18][27][28][29]. Additionally, molecular dynamics (MD) simulation can be utilized to optimize polyurea at the molecular level, further enhancing its performance.…”

“…This requirement is particularly crucial for military protective equipment such as military ships, armoured vehicles and protective helmets, all of which need to withstand shock waves and high-speed fragments resulting from near-field explosions [1][2][3][4][5][6][7][8][9][10]. Even though research on the protective properties of metal structures and high-performance fiber composites has made significant progress, there is an increasing need for lightweight and efficient blast protection structures [11][12][13][14][15][16][17][18]. To accommodate this requirement, the application of high-performance polymers in composite protection structures has gained momentum due to their enhanced protection performance, cost reduction and expanded application possibilities.…”

“…Additionally, polyurea-based hybrid composites can be synthesized [12]. Previous research studies have demonstrated that polyurea-coated fiber-reinforced composites can enhance the impact resistance of concrete slabs [13,14]. Furthermore, the combination of polyurea coatings with carbon fibers and basalt fiber-reinforced polymer reinforcement techniques has shown positive effects in enhancing the blast resistance of urban utility tunnels [15].…”

Thermal Buckling and Bending Analyses of Carbon Foam Beams Sandwiched by Composite Faces Under Axial Compression

“…The effect of adding calcium carbonate nanoparticles (NPs) to cement plast on mechanical characteristics was experimentally explored by Safaei et al [104]. Li et al [105] investigated vibro-impact resistant performance of fiber reinforced composite (FRC) plates with polyurea coating (PC) under four-edge elastic constraints. Seong et al [106] applied bending mechanism to determine the control parameters of core shear stress and found that, according to analytic calculations, the shear stress of core could be greatly decreased by increasing clearance.…”