121 マグネシウム合金スタッド溶接の非破壊検査(OS 材料利用・改質に関する実験・数値解析(その3))

概要

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Nondestructive evaluation for magnesium alloy stud welding is studied. Stud welding is a key technology to use magnesium alloy sheets for cases of electronic devices. Boss forming is difficult in the case of thin magnesium alloy sheet. The condition of stud welding of magnesium alloy is strict. To determine the welding condition the evaluation of welding is indispensable. We propose a nondestructive evaluation method of magnesium alloy stud in which eddy current excitation and laser vibrometer measurement are used. We apply this method to two types of stud specimens, welded in the optimum condition and in the unsuitable condition. The FFT results of the vibration for the specimens are shown. A slight difference between the FFT results is shown
社団法人日本機械学会の論文
2007-10-12