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Prediction of Upset Length and Upset Time in Inertia Friction Welding Process Using Deep Neural Network

관성 마찰용접 공정에서 심층 신경망을 이용한 업셋 길이와 업셋 시간의 예측

  • 양영수 (전남대학교 기계공학과) ;
  • 배강열 (경남과학기술대학교 메카트로닉스공학과)
  • Received : 2019.08.30
  • Accepted : 2019.09.12
  • Published : 2019.11.30

Abstract

A deep neural network (DNN) model was proposed to predict the upset in the inertia friction welding process using a database comprising results from a series of FEM analyses. For the database, the upset length, upset beginning time, and upset completion time were extracted from the results of the FEM analyses obtained with various of axial pressure and initial rotational speed. A total of 35 training sets were constructed to train the proposed DNN with 4 hidden layers and 512 neurons in each layer, which can relate the input parameters to the welding results. The mean of the summation of squared error between the predicted results and the true results can be constrained to within 1.0e-4 after the training. Further, the network model was tested with another 10 sets of welding input parameters and results for comparison with FEM. The test showed that the relative error of DNN was within 2.8% for the prediction of upset. The results of DNN application revealed that the model could effectively provide welding results with respect to the exactness and cost for each combination of the welding input parameters.

Acknowledgement

Supported by : 경남과학기술대학교

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