The results indicate that the shapes and positions of the CTOD design curve are greatly affected by the welding residual stress and the strength mis-matching.
CTOD Fracture Toughness Test for Weld Seam of Q370qE of Bridge
The Research on the Relationship between CTOD and J-integral Along with Their Critical Value δ_c and J_(Ⅰc);
取尺寸為B× 2B(B為試樣厚度 )、缺口方向為Np的試樣進行三點彎曲試驗 ,然後由所得到的 0℃下母材、焊縫和熱影響區 (HAZ)的p -V曲線來計算CTOD值 ,並對試驗結果進行了討論和總結。
結果表明,強度組配和殘餘應力對CTOD設計曲線具有明顯的影響;
The second order regressive polynomial was determined by the curve and the value of CTOD was estimated furthermore.
CTOD Experimental Study of Twin-wire Submerged Arc Welded Joint of High-strength Hull Steel
CTOD*能可作為修訂常規衝擊韌*標準的依據。
利用試驗研究和數值分析方法,對模擬焊接接頭三點彎曲試樣不同強度組配對裂紋尖端張開位移(CTOD)的影響進行了研究。
本文對化學成份相同、屈強比不同的兩種高強鋼進行了三點彎曲CTOD試驗。