迄今为止，高碳合金钢材料的焊接理论仍未完善。
Up to now, the welding theory for high carbon alloy steel has not been well established.
A部分：焊接理论基础—闭卷考试；150道考题；
本文基于闪光焊接理论研究及钢轨闪光焊接的工艺要求，设计了一种智能控制的钢轨闪光焊焊接系统。
In this paper, on the base of the study of flash butt welding theory, a new intelligent control system of rail flash butt welding is developed.
该方法拓展了粗糙集理论的应用领域，并为焊接建模提供了一种新方法，具有较大的应用潜力。
So it enlarges the application area of rough set theory and provides a new method for modeling in welding area, and has a large potential of wide application.
由于在焊缝部位存在焊接缺陷，采用传统的建立在构件无缺陷、无裂纹基础上的强度理论进行设计计算时，往往不能确保起重机在额定载荷下使用的安全性。
Since there are weld defects in welds, using traditional strength theory based on no defect and no crack to design, crane's security in rating load can't be insured.
这为进一步研究焊接接头的抗断性能分析提供了一定的理论基础。
This provides a certain theory and criterion for us to further research the fracture-resistant capability of welded joint .
对应用激光散射方法检测焊接烟尘进行了理论分析，并给出了相应的检测手段。
The application of laser light scattering to detect welding fume is theoretically analyzed in this paper as well as the corresponding detecting means is presented.
这也从分形理论的角度证明了在超塑性固相焊接头的形成过程中，焊接面各微区的焊合状态是非均匀性的。
It is proved by fractal theory that the welded state of every micro zone at welded surface is uneven in the formation process of isothermal superplastic solid-state welding joint.
对焊接结构疲劳寿命的预测有重要理论意义和实际应用价值。
For weld structure fatigue life forecasting, it has important theory meanings and practical applying value.
以可靠性理论为基础，制定了电站锅炉蛇形管焊接接头的加速寿命试验规范。
Based on reliability theory, the specification of accelerate life test for friction welded joints in boiler snake pipe was worked out.
根据断裂力学及可靠性理论，提出了一种起重机焊接箱形梁存在裂纹缺陷的可靠度计算方法。
Based on fracture mechanics and theory of reliability, this paper offers the reliability calculation method for welded box beam having fracture.
本论文从实验和理论两个方面对爆炸焊接装药量与界面波的组织形状及复合板力学性能间的关系进行了研究和探讨。
This papers using experiment and theory studies and discusses dose of explosive welding, microstructure of interface wave and mechanical properties relation of explosive clad plates.
本文在大量实验的基础上提出了对焊接节点采用断裂力学的方法和对螺栓球节点应用累积损伤理论估算它们疲劳寿命的计算方法。
Finally, the methods for calculating fatigue life based on fracture mechanics for welded node and cumulative damage theory for bolted sphere node respectively have been presented.
对所测试件选取适当的模型，应用弹性力学理论，推导出微小位移与焊接残余应力的关系式。
On the basis of model selection from the pieces tested and according to elastic mechanics, the relation between minute displacement and welding residual stress is deduced.
本文重点对大型管、简构件的现场焊接及变形控制做了深入的分析和探讨，具有较强的理论意义和实际应用推广价值。
In this bode, onsite welding and deformation control of the large pipe and barrel structures have been deeply analyzed, which is very useful for theory and practice.
公理设计理论为由多机器人组成的多零部件集成装配与自动焊接系统的设计提供了一种指导性的框架。
Axiomatic design theory provides an instructional frame for the design of multi-part integration assemblage composed of multi-robots and automatic weld system.
该系统的开发对于信息技术在焊接设备检测领域的应用有重要的理论与实用意义。
The development of this system is very meaningful to the use of information technology in field of test of welding machine .
在对焊点质量与焊接过程中信息的盒维数统计物理关系的分析基础上建立了基于模糊控制理论的焊点质量判定系统。
The qualitative judgment system based on fuzzy control was built after analyzing the relation between quality of spot welding and the box fractal dimension of signals in spot welding.
在数字信号处理及无损检测的理论基础上，分析了焊接过程对电流信号频谱的影响。
On the basis of digital signal process and nondestructive testing, the effect of welding process on the frequency spectrum of the current signal in AC spot welding is analyzed.
通过对均匀布药工艺下爆炸焊接复合板的界面波形进行理论分析，提出不等厚度布药的新工艺。
The paper studied and analyzed the interface wave of clad plate explosive welding used average arranging explosive, then put forward the new technology of unequal thickness arranging explosive.
本文根据线性累积损伤理论，给出了农机焊接件在谱载荷作用下的寿命估算方法。
According to the linear cumulative damage theory, a method for estimating life for welding structure of farm machinery acted under load spectrum is given.
对与焊接至关重要的钨极高磨尖角度、端头直径，焊接规范参数从理论到应用予以介绍。
The grind sharpened Angle of tungsten electrode, the diameter of end face and welding parameters that are important for welding are introduced from theory to application.
等离子喷焊电源是为等离子弧提供能量的电源，涉及到焊接工艺学、电力电子学、控制理论和计算机科学与技术等众多领域。
Plasma spray welding power source, which gives energy to plasma arc welding, involves welding technology, power electricals, control theory, computer science and technology, and so on.
把焊接电弧作为一个发尘点源，应用大气湍流扩散理论，建立了焊接过程中烟尘扩散的数学模型。
A mathematical model of fume diffusion in welding process was founded by considering welding arc as a spot source of generating fume and supplying the turbulent diffusion theory.
在对金属结构的焊接过程进行理论分析之后，本文介绍了焊接变形计算的计算机程序。
Following a theoretical analysis of the welding process of metal structure, a computer program for the calculation of the welding deformation is described in this article.
在此基础上用频域法进行分析和校正，在理论校正参数附近取多组实际校正参数，分别进行电阻负载实验和焊接工艺实验。
Based on the model, analysis and revising in frequency domain, several parameters are taken around the theoretical revising parameter, both resistance load and welding experiments are carried out.
鉴于焊接弧长控制系统通常为复杂的非线性系统，本文将模糊控制理论引入弧长控制过程中。
The fuzzy control theory is inducted to the control as the control system is a complicated nonlinear one.
本文澄清了人们对焊缝有关尺寸的偏见，从理论上分析了焊缝宽度、高度与焊接质量间的辨证关系。
The paper clarifies some conservative views of the weld size concerned, theoretically analysing the dialectic relationship between the weld width, height and its quality.
本文澄清了人们对焊缝有关尺寸的偏见，从理论上分析了焊缝宽度、高度与焊接质量间的辨证关系。
The paper clarifies some conservative views of the weld size concerned, theoretically analysing the dialectic relationship between the weld width, height and its quality.
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