Advances in multiple assembly acoustic structural design strategies for honeycomb composites: A review

Honeycomb composites have been widely used in aerospace, transportation and other fields due to the excellent mechanical and acoustic properties. Acoustic properties are mainly influenced by material properties and structure parameters. In recent years, various honeycomb composites have been proposed to improve acoustic properties. Available studies regarding the acoustic properties of honeycomb structures are reviewed in this paper through VOSViewer, with a visual analysis of research hotspots and trends. Therefore, the status of acoustic research on honeycomb composites is discussed from three perspectives: honeycomb core geometry structures (special shaped and hexagonal cell structures), honeycomb embedded structures (embedded fibers, particles and porous materials) and laminated honeycomb structures (single honeycomb sandwich structure and the multi-honeycomb laminated structure). Meanwhile, the acoustic mechanisms of honeycomb composites are explained, and the methods to optimize acoustic properties of different honeycomb structures are reported. In addition to current practice, potential new directions in acoustic studies of honeycomb composites are identified in this paper, to serve for future honeycomb acoustic structure design.