Paper Title:
Imaging and Evaluation of Nano-Scale Crack by Using Ultrasonic Atomic Force Microscopy
  Abstract

Evaluation method of nano-scale internal cracks by ultrasonic atomic force microscopy (UAFM) is proposed based on two approaches. 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 obtaining 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. As a result, it was proved that the proposed method is useful for evaluating the opening-and-closing behavior of the gap. Although the present study is focused on a nano-scale gap, this method is applicable to larger scale cracks using a larger tip and more stiff support than those used in AFM.

  Info
Periodical
Key Engineering Materials (Volumes 261-263)
Edited by
Kikuo Kishimoto, Masanori Kikuchi, Tetsuo Shoji and Masumi Saka
Pages
1067-1072
DOI
10.4028/www.scientific.net/KEM.261-263.1067
Citation
T. Tsuji, H. Irihama, T. Mihara, K. Yamanaka, "Imaging and Evaluation of Nano-Scale Crack by Using Ultrasonic Atomic Force Microscopy", Key Engineering Materials, Vols. 261-263, pp. 1067-1072, 2004
Online since
April 2004
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Price
$32.00
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