Month: August 2019

Congratulations Prosenjit on passing his MS thesis defense!

Congratulations Prosenjit on successfully passing his MS thesis defense! His thesis title is “Prediction of Elastic and Strength Properties of 3D Printed Materials using Microstructure-based Representative Volume Element”. He will start his PhD in Materials Science and Engineering at the University of Virginia. Farewell, Prosenjit. We wish you all the best on your new journey!

Congratulations Osama on his paper published in Int J Adv Manuf Tech

Congratulations Osama! His paper “ARIMA-GMDH: A low order integrated approach for predicting and optimizing the additive manufacturing process parameters” was accepted for publication in the International Journal of Advanced Manufacturing Technology. Here is the abstract (the paper link):

ARIMA-GMDH: A low order integrated approach for predicting and optimizing the additive manufacturing process parameters

Osama Aljarrah1, Jun Li1*, Wenzhen Huang1, Alfa Heryudono2, and Jing Bi3

1. Department of Mechanical Engineering, University of Massachusetts Dartmouth, Dartmouth, MA 02747

2. Department of Mathematics, University of Massachusetts Dartmouth, Dartmouth, MA 02747

3. Dassault Systemes SIMULIA Corp, Johnston, RI 02919

This paper proposes a novel data-driven approach for predicting and optimizing the additive manufacturing process parameters. The integrated scheme consists of three popular algorithms: (1) group method for data handling (GMDH) as the engine of neural networks, (2) autoregressive integrated moving average (ARIMA) for characterizing spatial collinearity of the multiple response, and (3) indirect optimization on the basis of self-organization (IOSO) to adopt the emerged correlated multi-response optimization problem. As a numerical case study: a computer-generated fused deposition modeling data tested the introduced algorithms. The finite element (FE) simulation model consists of the multi-layer residual stresses as targets, in respect of printing speeds as process parameters. The residual stresses predicted by the low order Integrated ARIMA-GMDH variants correlate well with the FE simulations. This approach provides a viable data-driven alternative for computationally-based rapid prototyping and additive manufacturing processes.