1814 ナノ構造の破壊センサーを目指したCNTプローブの弾性挙動解析(J06-2 マイクロ・ナノ構造と特性評価,J06 計算マイクロ・ナノメカニクス)

概要

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Miniaturization of machines in the near future requires new nano-scale apparatus for detecting defects, similar to acoustic emission (AE) sensors widely used for real-time searching of flaws. We attempt to examine a carbon nanotube (CNT) probe used as a microscopic AE sensor to assess defects. A molecular dynamics model with (10,10) single-wall CNT attached to a copper specimen with void is investigated here. The vibrational motion of CNT is analyzed by Fast Fourier Transform technique. Frequencies of the longitudinal velocity of the tube during tensile loading of the specimen are obtained for three different carbon-copper distances. When there is sufficient interaction strength to CNT, signal of developing defect in the specimen is captured by CNT and induces peak frequency spectra at few teraHelz.
社団法人日本機械学会の論文
2005-09-18