Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Motoyasu Yuta and Gotoh Yuji and Sasaguri Nobuya and Kawasaki Kazuhiro,Non-Destructive Evaluation of Surface Hardening Depth of Spheroidal Graphite Cast Iron using Alternating Magnetic Field,Journal of Japan Foundry Engineering Society,13420429,Japan Foundry Engineering Society,2016,88,10,595-603,https://cir.nii.ac.jp/crid/1390282681487693568,https://doi.org/10.11279/jfes.88.595