weld crack 中文意思是什麼
weld crack
解釋
焊縫裂紋-
Some crack extension probably developed from the unfused section of the butt weld across the thickness of the stiffener during transport and erection.
有些裂紋可能在運輸和安裝過程中就從加勁肋對接焊未熔透處開始發展。 -
Hence lack of fusion and slag would exist at the weld root and create a large initial crack condition.
因而未熔透及夾渣存在於焊縫棍部，並造成大的初始裂紋條件。 -
The second crack is a crack originating at the groove weld toe of the column flange-girder flange connection.
第二種是產生於立柱翼緣與主梁翼緣連接處的坡口焊縫焊趾處的裂紋。 -
The whole name of this steel is lower weld crack sensitivity steel o7mncrmov ( shorted as wdl )
該鋼種的全稱為低焊接裂紋敏感性07mncrmov系列鋼（簡稱wdl鋼） 。 -
Wdl is a certain steel which has lower sensitivity to weld cold crack and need not or a little warm - up before weld
國產wdl鋼種是一種對焊接冷裂紋敏感性低、焊接前不要預熱或稍加預熱而不產生焊接冷裂紋的鋼板。 -
What is taken account of includes the effects of the material, geometrical shape, manner of loading, ratio of cycle stress, residual stress and short crack in weld toe on fatigue strength
該模型考慮了材料、幾何形式、荷載形式、應力比、尺寸效應、殘余應力及焊趾根部短裂紋等因素對疲勞強度的影響。 -
Abstract : in view of the quantity examination of weld defect by ultrasonic, on the basis of theoretical analysis and test, the cause, composition and contriling method of error of crack defect size h have been analyzed systematically, a controlling and statistical method of ultrasolic examination error has been put forward. this method is simple and suitable, and has been verified by test
文摘:針對焊縫缺陷超聲波定量檢測，從理論分析與實驗出發，系統分析了裂紋類缺陷自身高度尺寸h的檢測誤差的物理成因、組成及誤差控制方法，提出了一套實用簡潔並經實驗證實可行的超聲波檢測誤差控制及統計方法。 -
The opening stress and the life of crack growth is calculated and compared with the test results and the experience formula. the feasibility of the newman theory of opening stress used in the high strength steel is validated. then through the slice synthesis method, the three dimension surface crack of the weld joint of cone - cylinder is decomposed into many plane through cracks
本文將基於裂紋閉合現象建立的帶狀屈服模型，用在平面貫穿裂紋中，計算此時的裂紋張開應力和疲勞裂紋擴展壽命，與試驗結果和經驗公式比較，驗證newman裂紋張開應力理論在高強鋼中的可行性；然後，用切片合成法，把潛艇結構凸錐柱結合殼焊縫處的三維表面裂紋分解成平面貫穿裂紋，用帶狀屈服模型的理論來分析平面貫穿裂紋，得到裂紋沿深度方向的擴展速率，進而得到潛艇結構的疲勞壽命。 -
With the experiment of surface crack growth of bhw - 35 weld metal, the law of the surface crack shape variation when it grows was obtained, and the law of surface crack growth rate was also gotten. these direct the evaluation of the surface crack fatigue growth life and the critical value of its length
對bhw - 35鋼焊縫材料進行表面裂紋擴展試驗研究，得到裂紋的擴展形貌變化規律，並對其疲勞擴展壽命進行預測研究，為汽包下降管角焊縫部位的表面裂紋擴展壽命預測提供依據，同時也確定了其表面裂紋擴展的臨界值。
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