An Intelligent Metrology Architecture with AVM for Metal Additive Manufacturing

Haw Ching Yang, Muhammad Adnan, Chih Hung Huang, Fan Tien Cheng, Yu Lung Lo, Chih Hua Hsu

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


The capability of measuring melt pool variation is the key evaluating metal additive manufacturing quality. To measure the variation, a metrology architecture with in situ melt pool measurement and an estimation module is required. However, it is a challenge to effectively extract significant features from the huge data collected by the in situ metrology for quality estimation requirement. The purpose of this letter is to propose an intelligent metrology architecture with an in situ metrology (ISM) module and an enhanced automatic virtual metrology (AVM) system. The ISM module can extract the melt pool features with a coaxial camera and a pyrometer. On the other hand, the AVM system is improved with a feature selection method to solve the issue of limited samples in the component modeling quality. The examples with different metals are adopted to illustrate how the system works for estimating surface roughness and density of components, and, in the future, the system can even serve as the feedback signal for adaptive control of the process parameters by layering in an additive manufacturing system.

Original languageEnglish
Article number8733865
Pages (from-to)2886-2893
Number of pages8
JournalIEEE Robotics and Automation Letters
Issue number3
Publication statusPublished - 2019 Jul

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Biomedical Engineering
  • Human-Computer Interaction
  • Mechanical Engineering
  • Computer Vision and Pattern Recognition
  • Computer Science Applications
  • Control and Optimization
  • Artificial Intelligence


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