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امثلية عمليات اللحام باستخدام مصفوفة التضارب == Optimization Of Welding Processes Using Confusion Matrix
Author name:
حسين خليل برهان
Supervisor name:
حيدر الجبوري
General topic:
Production engineering metallurgy and materials
Specific topic:
Metals Engineering
Degree:
Higher Diploma
University:
University of Babylon - Faculty Of Materials Engineering - Department Of Metallurgical Engineering
Language:
English
University location:
Babylon
First pages:
46T185 - p.pdf
Abstract:
Welding is a materials joining process in which two or more parts coalesced at their contacting surfaces by suitable application of heat and/or pressure.The proposed system consist of three stages : - First stage : preparing the actual samples from the previous research. These stage have multi tests (i.e, residual stress, fatigue life, impact energy, hardness and tensile strength) - Second stage : Translated the result of previous stage depending on speed of welding and heat input. The mechanical properties was related to the heat input and the temperature of the processes of welding. The quantity of the heat input was increased when the speed of welding was slow and heat input decrease when the speed of welding was high, this high heat input led to form coarse grain and this led to decrease the mechanical properties.Third stage : generated software system used different types of error measures, this software include two phase, the first phase is to estimate the error between the actual and predicted tests. While the second phase is to verification of the result phase on the person correlation measures, and this phase show high correlation among welding processes. In general these correlation lied from +1. The verification occur base on the measures of confusion matrix, (i.e SSE, MSE, RMSE ,MAPE, MPE and MAE ).The system satisfy the following results (Accuracy equal 84.37%, True positive (TP) equal 86.66 % and Precision equal 96.2% ).
