The method of weld width prediction based on artificial neural network ( ANN ) was studied and the weld quality could be estimated by it .

研究了用神经网络预测 焊缝 宽度的方法。

The results of simulation showed that the ANN model could predict the weld width and the welding quality monitor system based on ANN was efficient .

仿真结果表明，所建立的ANN模型可预测 焊缝 宽度，基于人工神经网络的焊接质量检测系统是有效的。

An arc constriction will have more influence on the weld width than on the penetration depth .

电弧收缩影响 熔 宽，对熔深增加影响较小。

The inhomogeneous mechanical property of welded joint with longitudinal crack is analyzed and the effect of strength matching and weld width on J-integral is studied in this thesis .

本研究对含有横向裂纹焊接接头的力学性能不均匀性进行分析，讨论焊缝强度组配和 焊缝 宽度对J积分的影响规律。

The result showed that the weld penetration is dominantly affected by the laser power and the weld width is determinated by the arc energy .

结果表明：激光功率是焊接熔深的决定因素，而电弧能量对 焊接 熔 宽影响显著；

Laser beam welding has gained increasing application in the industry because of its high ratio of penetration deep to weld width low heat effects and high welding speed .

激光焊接由于其 焊缝深 宽比高、热影响 区小以及高的焊接速度而在工业上得到越来越广泛的应用。

Molten pool characteristic information can be gotten by image graying auto-threshold gray binary processing and morphologic processing . BP neural network prediction model can be built between shading characteristics of molten pool and weld width .

本文采用灰度化、自动阈值二值化、形态学方法处理熔池图像得到熔池阴影特征信息，并建立了熔池阴影特征信息和 焊缝 宽度之间的BP神经网络预测模型。

Elemental Te can curiously increase welding penetration and decrease weld width .

Te能明显增加焊接熔深，减小 焊缝 熔 宽。

Assembly clearance enlarged welding deformation of welded joints and decreased weld width and penetration .

随着装配间隙的增大，GH99高温合金焊接接头的变形增大， 熔 宽与熔深减小。

And the weld width decrease with welding speed being increased .

而焊接速度的增大， 焊缝正面和 背面 的 熔 宽明显减小。

Test result proves that the model can effectively predict the weld width according to the shading characteristics of molten pool .

试验结果表明，该模型能够根据焊接过程中熔池阴影特征信息有效地预测 焊缝 宽度。

The influences of Nd : YAG laser + pulsed GMAW ( gas metal arc welding ) arc hybrid welding parameters on weld width were investigated by bead-on-plate tests .

通过试验研究了Nd：YAG激光+脉冲GMAW复合热源焊接过程中焊接工艺参数对 焊缝 熔 宽的影响。

Based on a lot of experiments and the data of weld width of TIG deposit surfacing influencing parameters of weld width and the criterial welding measure during TIG deposit surfacing are advanced .

在大量试验的基础上，对TIG熔敷堆焊 焊缝 宽度进行数据分析，得出了在TIG熔敷堆焊情况下焊缝宽度的影响参数，提出了关于TIG熔敷堆焊焊接的规范措施。

By means of fuzzy control theory a fuzzy controller is designed with weld width error on the back and its variation as inputs the regulating variation of welding current as output . The fuzzy controller lays a foundation for controlling weld penetration accurately .

采用模糊控制理论，设计了以 焊缝背面 宽度的误差和误差变化率作为输入变量、焊接电流的调节量作为输出变量的模糊控制器，为进一步精确控制熔透状态奠定了基础。

Neuro-fuzzy Control of Back Weld Width in TIG Welding

焊缝 正面 实时 检测 熔 宽的方法TIG焊背面 熔 宽的神经网络模糊控制

The results show that the hybrid weld width increases with the increase of arc power and laser power and decreases with welding increased speed while the laser-arc distance and defocusing distance have little influence on it .

结果表明，复合热源 焊缝 熔 宽随电弧功率和激光功率的增大而增大，随焊接速度的提高而减小，而光丝间距和离焦量对复合热源 焊缝 熔 宽影响相对较小。

With the increasing of helium content in the mixed gases the arc voltage increase and the weld width broaden especially the weld penetration deepens obviously .

随着混合气体中氦气比例的增加，熔深和 熔 宽均增加，但熔深增加得更明显一些。

With the increase of remelting times the weld width and penetration increases and both the length and width of columnar crystals increase in the welding zone .

随着重熔次数的增加， 焊缝 熔 宽与熔深加大，焊缝区内柱状晶的长度与宽度增大。

According to the analysis of weld depth weld width weld area it can be seen that the main factor that affects weld cross section is welding current .

通过对焊缝熔深、 熔 宽、结合面尺寸的分析，发现焊接电流是影响复合焊接焊缝横截面尺寸的主要因素。

The experiment results show that with activating fluxes the weld penetration become deeper remarkably and the weld width become narrower ;

试验结果表明304不锈钢采用A-TIG焊时，涂敷活性焊剂的焊缝熔深显著增加， 熔 宽有所减小；

The Parameter Self - Tuning Fuzzy and Integral Control on TIG Weld Width

TIG 焊 熔 宽的参数自调整模糊与积分的混合控制

In the case of a fixed laser power with the increase of welding speed weld width decreases penetration depth increases the line energy 3KJ / cm is the critical point whether the weld will penetrate .

在固定激光功率的情况下，变换焊接速度，随着焊接速度的增加， 熔 宽减小，熔深加大，线能量为3KJ/cm左右是焊缝是否熔透的临界点。

This is because that the addition of arc voltage means the decreasement so the enlargement of are swing makes the incensement of weld width .

这是因为电弧电压增加意味着电弧的长度增加，因此电弧摆动范围扩大而导致 焊缝 宽度增加。

The swing of welding stick during the welding process can improve the welding efficiency increase the weld width and lower weld layer thickness .

焊接过程中的焊丝摆动，可以提高焊接效率、增加 焊道 宽度、降低焊层厚度。

The paper researches the relation of parameters and weld width of TIG deposit surfacing used in rapid prototyping .

研究了用于快速成形的TIG熔敷堆焊工艺中各参数与 焊缝 宽度的关系。

Moreover the welding speed effects on the fish-scale spacing and the defocus distance on the weld bead penetration and weld width mainly .

扫描速度对焊缝表面的鱼鳞状条纹间距影响尤为明显；离焦量主要影响 焊缝 的 宽度和熔透性；

The interaction between laser beam and plasma arc which changed with laser power and welding speed had an important influence on weld width and ratio of bottom to top width of weld .

激光/等离子电弧协同效应随激光功率和焊接速度变化而不同，从而影响 复合焊焊缝的 熔 宽和熔宽比。

The acreage of fused bath and weld width became smaller with getting a bevel on joint .

开坡口使接头熔池面积变小， 熔 宽减小。

With the models backside weld width could be deduced from topside parameters of welding pool in real time .

模型根据熔池正面参数可实时预测 焊缝背面 宽度。

Using this system and the analysis of the results the relationship of weld parameters between weld width and weld height was gotten .

应用该系统进行了堆焊试验，对试验结果进行分析得出了焊接工艺参数与 成型 焊缝 熔 宽、余高之间的关系。