KNOWLEDGE EXTRACTION IN ADDITIVE MANUFACTURING A FORMAL CONCEPT ANALYSIS APPROACH

Published

March 20, 2024

Author(s)

Zhuo Yang, Yan Lu, Yande Ndiaye, Mario Lezoche, Herve Panetto

Abstract

In Additive Manufacturing (AM), it is still a major challenge to manage part quality, which is heavily influenced by feedstock materials, process settings, and in-process control. Deviations in these factors can lead to defects in the final product, particularly in Laser-Powder Bed Fusion (L-PBF), an AM process that builds parts with high precision but is too complex to control. On that account, in-situ monitoring becomes crucial for evaluating and ensuring process stability during L-PBF builds. By analyzing insitu data, AM operators can detect process deviations and pause or stop a build as needed. Continuously monitoring in-situ data allows for immediate adjustments of process settings and avoids potential defects in the final part. However, the extensive amount of high dimensional data generated from advanced sensing technologies holds their benefit for anomaly detection and process control. The abundance and complexity of AM process monitoring data require a systematic approach to extract valuable insights and translate them into actionable knowledge. While machine learning-based techniques are nowadays essential for establishing AM process-structure-property relationships, they lack interpretability for quick actions from AM operators. In this context, we introduce a new methodology based on Formal Concept Analysis (FCA) to extract knowledge from AM multimodal data as a set of association rules that could be used as a knowledge base to guide decisions and provide guidelines for AM operators. Specifically, for L-PBF, melt pool features are first extracted from in-situ melt pool images, and clustered into discrete categories through Machine Learning (ML) techniques. After that, FCA is allied and demonstrated to discover association rules revealing the intricate relationships between ranges of values of these features and process deviations. The final set of rules is analyzed and presented for users to adopt in monitoring their L-PBF AM processes.

Proceedings Title

A FORMAL CONCEPT ANALYSIS-BASED METHODOLOGY FOR KNOWLEDGE EXTRACTION IN ADDITIVE MANUFACTURING

Conference Dates

August 25-28, 2024

Conference Location

Washington DC, DC, US

Conference Title

ASME IDETC-CIE 2024

Pub Type

Conferences

Keywords

Additive Manufacturing, Laser-Powder Bed Fusion, Data-driven, Data mining, Formal Concept Analysis, Knowledge extraction, Knowledge formalization

Citation

Yang, Z. , Lu, Y. , Ndiaye, Y. , Lezoche, M. and Panetto, H. (2024), KNOWLEDGE EXTRACTION IN ADDITIVE MANUFACTURING A FORMAL CONCEPT ANALYSIS APPROACH, A FORMAL CONCEPT ANALYSIS-BASED METHODOLOGY FOR KNOWLEDGE EXTRACTION IN ADDITIVE MANUFACTURING, Washington DC, DC, US (Accessed July 17, 2024)