초록 ▼

A conventional honeycomb structure is strengthened by intermediate membranes (13), which compartmentalize the cells (5) in the height-wise direction. Such a structure more particularly has an increased mechanical strength and high damping properties for Helmholtz resonators intended to trap sound wa

A conventional honeycomb structure is strengthened by intermediate membranes (13), which compartmentalize the cells (5) in the height-wise direction. Such a structure more particularly has an increased mechanical strength and high damping properties for Helmholtz resonators intended to trap sound waves arriving on the structure by a perforated face (1).

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for making a honeycomb structure including membranes dividing cells of the structure, comprising the steps of:a) superimposing main sheets for defining the cells and superimposing lengthwise folded intermediate sheets with said main sheets;b) adhesively joinin

[ What is claimed is:] [1.]1. A process for making a honeycomb structure including membranes dividing cells of the structure, comprising the steps of:a) superimposing main sheets for defining the cells and superimposing lengthwise folded intermediate sheets with said main sheets;b) adhesively joining each of said main sheets to two adjacent ones of said main sheets at joining portions that are to become straight edges of the cells, and which are separated by free portions that are to become oblique edges of the cells, and adhesively joining portions of said intermediate sheets to straight edges of two adjacent ones of said main sheets with said joining portions separated by free portions; andc) opening the structure by pulling the main sheets apart, and creating the cells of the structure divided by said membranes by unfolding said free portions of said intermediate sheets.