球状黒鉛鋳鉄に内在するチャンキー黒鉛による超音波特性の変化
Change in Ultrasonic Characteristics with Chunky Graphite Existing in Spheroidal Graphite Cast Iron

Yoshiaki Kawada, Hiroshi Kato, Yutaka Nagai, Ryoichi Morimoto
2004 Journal of Japan Foundry Engineering Society  
doi:10.11279/jfes.76.93 fatcat:7z4im3v5d5fljg3tjdntgbdlta