Abstract: Fault diagnosis of the intershaft bearing of aeroengine is quite challenging because vibrations can only be measured on the distant external casing, resulting in weak fault features and ...

Science fiction has always needed materials that don't exist. How else do you explain a lightsaber, power a warp drive, or make a superhero's shield indestructible? Over a century of storytelling has ...

Artificial intelligence is increasingly used to integrate and analyze multiple types of data formats, such as text, images, ...

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Abstract: In this paper, cement-based piezoelectric composite material is introduced into the periodic structure. A type of one-dimensional phononic crystal structure was proposed to overcome the ...