Nanoscale nondestructive evaluation of materials and devices by ultrasonic atomic force microscopy

Autor:	Tsuyoshi Mihara, Hiroshi Irihama, Kazushi Yamanaka, Toshihiro Tsuji
Rok vydání:	2003
Předmět:	Materials science business.industry Analytical chemistry Resonance Stiffness Finite element method Stiffening Crack closure Highly oriented pyrolytic graphite Nondestructive testing medicine Ultrasonic sensor medicine.symptom Composite material business
Zdroj:	SPIE Proceedings.
ISSN:	0277-786X
DOI:	10.1117/12.483823
Popis:	Two evaluation methods of nano-scale internal defects by ultrasonic atomic force microscopy (UAFM) is reviewed. The first one is a linear vibration analysis of the contact stiffness calculated from a finite element method analysis of a model including a subsurface gap. The second one is a nonlinear vibration analysis of a stiffening or softening spring representing the opening-and-closing behavior of the gap. These methods were verified by the resonance frequency mapping, the load dependence of the resonance frequency and the resonance spectra in UAFM on a subsurface gap in highly oriented pyrolytic graphite. It was proved that the proposed methods are useful for evaluating the crack closure/opening on the nano-scale.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::745b13adc98effbf2b8f4f898e142c21 https://doi.org/10.1117/12.483823 Zobrazit plný text záznamu