YAGレーザによる照射部の溶込み状態の評価に関する研究 : 第1報,AE信号の特徴と溶込み状態の関係

概要

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The laser welding methods are widely used for manufacturing the products of which the high-quality welding conditions are required. Therefore, the establishment of the technique that evaluates the conditions of the melting region during the welding is desired. In this stydy, the various irradiation energy was irradiated to the SUS304 stainless steel by YAG (Yttrium Aluminum Garnet) laser equipment, in order to evaluate the melting conditions at the irradiation region. During the irradiation, the AE (Acoustic Emission) signals that occurred by the melting of the steel were detected. After that, the detected signals were analyzed with AE method, FFT (Fast Fourier Transform), wevelet transform and chaos analysis. And the melting conditions were observed with the optical microscope. In this paper, the relationships between the features of the signals and the conditions are reported.
2009-10-25