シャルピ吸収エネルギと限界CODの関係

概要

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Correlation between Charpy absorbed energy and critical COD is investigated to get a useful method for estimating critical COD from Charpy V data. Round bar tension test, Charpy V impact test and static 3-point bending test with fatigue notched specimen are carried out using mild steel, 80 kgf/mm^2 grade high strength steel and A5083 aluminum alloy. Correlations are found between W'_c/σ_Y and δ_c as well as between EW'_c/σ^2_Y and Eδ_c/σ_Y, where W'_c is Charpy absorbed energy obtained by considering temperature difference between Charpy transition temperature and COD transition temperature. The symbols σ_Y, δ_c and E are yield strength, critical COD and Young's modulus respectively. The correlations are established for various kinds of metals and over a wide temperature range including not only upper shelf range but also transition range.
社団法人溶接学会の論文
1986-05-05