Development of Fuzzy Logic System to Predict the SAW Weldment Shape Profiles

一个模糊模型被介绍预言包括热的形状的沉没的弧焊接(锯) 的焊接形状侧面影响了地区(HAZ ) 。锯 bead-on-plates 被跟随一个完整的因素的设计矩阵焊接。设计矩阵由焊接进程参数的输入的三个层次组成了。焊接是 cross-sectioned 并且蚀刻，并且地区被测量。一种印射的技术被用来测量焊接地区的各种各样的片断。这些印射的地区被用来造一个模糊逻辑模型。模糊模型的会员功能为焊接地区的精确预言被选择。模糊模型进一步为一套测试用例数据被测试。模糊逻辑模型预言的焊接地区与试验性地获得的形状侧面和靠近的同意在之间相比二被注意。为焊接地区和模糊逻辑模型开发的印射的技术能被用于 SAW 过程的联机控制。从 SAW 模糊逻辑模型熔化和 HAZ 罐头的一个评价也被开发。

A fuzzy model was presented to predict the weldment shape profile of submerged arc welds （SAW） including the shape of heat affected zone （HAZ）. The SAW bead-on-plates were welded by following a full factorial design matrix. The design matrix consisted of three levels of input welding process parameters. The welds were cross-sectioned and etched, and the zones were measured. A mapping technique was used to measure the various segments of the weld zones. These mapped zones were used to build a fuzzy logic model. The membership functions of the fuzzy model were chosen for the accurate prediction of the weld zone. The fuzzy model was further tested for a set of test case data. The weld zone predicted by the fuzzy logic model was compared with the experimentally obtained shape profiles and close agreement between the two was noted. The mapping technique developed for the weld zones and the fuzzy logiemodel earl be used for on-line control of the SAW process. From the SAW fuzzy logic model an estimation of the fusion and HAZ can also be developed.