Relationship between Frequency Distribution Characteristics of Acoustic Emission and Fracture Mechanisms on AFRP (2nd Report, Analysis of Frequency Distribution by Weighted Mean Frequency Distribution Method).

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  • ＡＦＲＰの破壊音の周波数分布特性と破壊機構の関連性　第２報　加重平均周波数分布法による周波数解析
  • AFRP ノ ハカイオン ノ シュウハスウ ブンプ トクセイ ト ハカイ キコ

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Studies using an acoustic emission (AE) method have been undertaken to elucidate the fracture mechanisms of [0]8 and [0/±45/90]s AFRP in a static tensile test. In a previous paper, it was confirmed that the fracture phenomena were related to characteristics of the frequency distribution of individual AE waves. Since many AE waves are observed in each deformation process before reaching the final fracture, it is difficult to define a correspondence the representative frequency distribution of AE waves with the representative fracture mechanisms. So, in this paper, a method for new statistical analysis has been proposed. Using this method, it is confirmed that the fracture phenomena can be specified by variation of shape of frequency distribution.

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