東海地区の溶接検定結果の統計的考察

概要

論文の詳細を見る
It is quite important to establish and improve welder's techniques in fabricating industries. The national certification tests of welder's qualification are carried out periodically to realize this purpose. There are 26,000 applicants annually to this certification in this area of Tokai districts. As the author has been concerned with this certification test for the past 20 years, a statistical work on this field was made. This report describes the recent trends of certification results which were analyzed by computer. The results are summarized as follows; 1) 70 % of the applicants pass this certification i which includes manual metal arc welding and semi-automatic CO_2 arc welding. 2) Fundamental certification tests for manual arc welding reveal that 83 % of the persons fail the test because of defects in the root area of the weled joints.
大同工業大学の論文