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- All of these tests are used to detect surface crack discontinuities. 所有这些测试是用来检测表面裂缝不连续性。
- No stress measurements or crack surface samples were available for examination, only the surface crack configuration. 没有应力测量或裂纹表面取样可用于检验，只能依据表面裂纹图形。
- A study of the surface crack at thread root of tool joint pins by the aid of finite element method. 石油钻杆公接头螺纹牙根部表面裂纹有限元计算
- Surface crack on teethclamp was studied by means of macroscopic and metallographic examination. 采用外观和金相检验等方法对牙钳表面裂纹进行了分析。
- The exterior surface crack is the most dangerous among crack defects of oil thimble. 套管裂纹缺陷中最危险的是表面裂纹,可分解成表面周向裂纹和表面轴向裂纹问题。
- During damage tolerance analysis, the probably crack types of key danger position are surface crack and edge angle crack in this article. 在损伤容限分析中，本文认为关键危险部位可能萌生的裂纹形态为表面裂纹与棱边角裂纹；
- Solving the corresponding differential equation, an analytical solution for the surface crack width of concrete covers is derived. 通过求解相应的微分方程，导出混凝土保护层表面裂缝宽度的解析解；
- There are four kinds of concrete appearance quality limitation:surface crack,surface dilapidation,asymmetry color and tendon-leakage. 砼外观质量的缺陷大致有:表面裂缝;表面破损;表面颜色不均匀:表面漏筋四方面,阐明了结合不同情况提出应采取的处理方法。
- Fatigue surface crack will initiate along the weld toe when tubular KK-joints in offshore platforms are subjected to cyclic loading for a long time. 摘要海洋平台中的KK管节点由于长期承受循环载荷而容易在焊缝处产生疲劳表面裂纹。
- This paper analyzes the composition of liquid steel on the high - temperature mechanical property of steel and longitudinal surface crack of CSP slab. 从钢水成分影响钢的高温力学性能的角度,研究钢水成分对钢的高温力学性能和CSP薄板坯表面纵裂的影响。
- It was concluded that this defect is not surface crack indeed,but cross extruded wrinkle rising from inhomogeneous deformation. 发现这种缺陷实际并非表面开裂，而是由于变形不均匀造成的横向挤压皱折。
- For surface crack in pipe, this paper presents the finite element model including line spring element that is used for J integration calculation,as well as numerical examples. 对管道上的表面裂纹采用线弹簧单元,建立了裂纹管道J积分计算的有限元模型,给出了J积分的计算实例。
- The prediction of geometric features of surface crack propagation under quasi-static loading is recognized as one of the attractive projects in LBB assessment. 表面裂纹准静态扩展的几何形貌变化规律的预测是破前漏(LBB)评判十分重要的课题之一。
- Based on the underground of high efficient CC in Ma steel,the longitudinal surface crack and centerline crack,the uppermost defects of beam blank CC production are studied. 本文针对马钢异型坯高效连铸的背景,分析了异型坯生产中铸坯质量的主要缺陷类型:表面纵裂和中心裂纹。
- The BIE method computer program, presented in this paper, can be accurately used for the elastoplastic fracture analysis of edge crack or long surface crack in various structural components. 本文提供的边界积分方程法计算机程序,可较精确地用于各种结构的边裂纹或长表面裂纹的弹塑性分析及裂纹尖端张开位移的计算,从而可对这些结构进行断裂分析。
- After that , we make with CDF drawing by interrelated formula and simulate the model of X56 pipeline with surface crack by finite element software ANSYS, then, we compute J integral of crack tip . R阻力曲线确定热影响区和焊缝金属分别具有的断裂韧度,根据相关的公式做出CDF评定图,应用有限元软件ANSYS模拟含表面裂纹的X56海底管线模型,并计算裂纹尖端的二维J积分值。
- The paper presents the design criteria and method for arresting crack and burst of the internal pressured vessels of big pipes with circular surface crack by arched strip and wound wire. 本文介绍了含有表面环向裂纹的内压简体及大型管道采用轴向加弧形务板与钢丝缠绕的止裂、抑爆设计原则及设计方法。
- The square-root stress singularity along the surface crack front was simulated using the quarter point singular elements collapsed by 20-node three-dimensional isoparametric elements. 表面裂纹前缘平方根应力奇异性使用由20节点三维等参块单元退化而成的四分之一节点奇异单元来模拟。
- Through the improvement to the press craft for the heavy wall-head, avoids the production of its surface crack, guarantees the products' quality, it offered the reference for the work in the future. 摘要通过对厚壁封头压制工艺的改进，避免了其表面裂纹的产生，保证了产品质量，为今后的厚壁封头压制工作提供了参考依据。
- The crack sensitivity of hypo-peritectic steel, its formation mechanism and factors are discussed, and on the analysis, the reasons and factors on longitudinal surface crack are found out. 为改善亚包晶钢高速浇铸时的表面质量,从过热度、锰硫比、拉速、铜板温度、平均热流和保护渣几个方面进行讨论。
