For improving the interface's associative intensity of composite sandwich structure,we prepare a new composite sandwich with the compound core of composite pillar and foam plastic.

type piezoelectric composites using thickness shear mode (PCMTS) were selected as the cores of the sandwich structure, which can generate the thickness shear deformation and actuate the sandwich structure to give rise to the desired transverse deflection.

Microwave-absorbing composite sandwich structures have been widely used because of its light weight,high strength as well as perfect property of electromagnetic wave absorption.

The cross section morphology and skin-core structure of PAN fiber in wet-spinning are analyzed by the means of electron probe microanalyser (EPMA) and scanning electron microscope (SEM).

The results indicated that the soybean protein fibers have skin-core structure and fibril structure.

The formation of gel network and skin-core structure was researched during the preoxidation and carbonization stages depending on using the transmission electron microscope(TEM).

Effect of preoxidation temperature on core/shell structure during the preoxidation procession of PAN fibers;