裂縫焊合 的英文怎麼說
中文拼音 [lièfénghàngě]
裂縫焊合
英文
crack healing-
To avoid manual labor of chiseling - grossness, in the area of second - stage concrete construction, permanently non - removed metal molding boards nets are used as molding boards of first - stage concrete. substitution joints of reinforcing steel bars for traditional electric welding and usage of equipments for joints of reinforcing steel bars efficiently improve strength of junctions and rate of connecting reinforcing steel bars, and safety of construction and stability of quality, and greatly reduce cost. it ' s possible that three gorges project become top - ranking project in the world by study on systems engineering of high - strength concrete construction
混凝土縫面處理採用高壓水流沖毛技術，大大提高了施工工效，減少了倉面污染；模板工程大量採用定型鋼模板施工技術，提高了壩體混凝土成型質量和工程進度；在二期混凝土施工區域，為免除人工鑿毛勞動強度，採用永久性免拆金屬模板網作為一期混凝土模板；鋼筋連接改進傳統的電焊連接方式，採用大量採用鋼筋接頭機械連接技術，有效提高了接頭強度和鋼筋連接速度，施工安全性大大加強，質量穩定性有效提高，經濟成本大大降低；三峽二期工程持續高強度混凝土施工系統工程的研究，使三峽工程成為名符其實的「世界一流工程」成為可能；三峽二期工程混凝土溫控綜合技術的應用，有效降低了壩體混凝土溫度的產生；混凝土表面處理及裂縫處理技術的應用，提高了建築物的整體性和耐久性。The reduction factors derived from curve fitting based on calculation results by the finite element program ( ansys ) considering all kinds of damages such as cutouts, corrosion, cracks, denting, initial deflection and residual stress are introduced to modify the effective width of perfect panel in the present paper
本文考慮板中可能存在孔洞、腐蝕、裂縫、局部撞損和初始焊接變形或殘余應力等損傷和初始缺陷，對不同的損傷形式用有限元程序（ ansys ）進行大量的計算，通過曲線擬合的方法引入折減系數對完好板格的有效寬度進行修正。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。Then, the half - empirical paris equation, which can be used as a design base of flip chip package reliability, have been determined from the crack propagation rates da / dn measured and the energy release rates g simulated
然後由實驗測得界面裂縫擴展速率和有限元模擬給出的能量釋放率，擬合得到可作為倒裝焊封裝可靠性設計依據的paris半經驗方程。Repair and cause of fillet weld cracking of thermocouple tube and cylinder
聚合釜下部熱電偶套管與內筒體角焊縫開裂原因及修復The welding line microstructure of ticp / fe in situ composites gained by different welding technologies and welding methods was different. however the microstructure was diffused on the welding line and there were no welding defects, the welding quality was better. the tic reinforced particles on the welding line still kept the same shape as that of the casting microstructure
原位tic _ p fe復合材料採用不同焊接工藝和焊接方法所得的焊縫組織有所差別，但焊縫處的組織均勻，沒有裂紋等焊接缺陷產生，可焊性較好；焊縫處的tic增強顆粒仍保持鑄態組織中tic增強顆粒的形態。Choosing the reasonable weld dimension : the defornation will be increased when weld dimension is added ; but if the weld dimension is too small, it will decrease reduce the load ability of weld and quicken the cooling speed of joint
選用合理的焊縫尺寸：增大焊縫尺寸，變形也會變大；但過小的焊縫尺寸，將降低裂紋的承載能力，使接頭的冷卻速度加快。分享友人