Predictive shrinkage error model for selective laser sintering hybrid milling

Trung Nghiep Nguyen, Hideki Aoyama, Ichiro A. Raie

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Selective laser sintering hybrid milling (SHM) is an advanced manufacturing technology that combines the flexibility of additive manufacturing with the precision of traditional machining. In SHM, instead of machining the products after they are completely formed using selective laser sintering (SLS), the milling process is conducted alternatively with the SLS. This allows direct fabrication of extremely complicated and high-precision products on the same workstation. However, shrinkage owing to SLS is a fundamental problem of this technology, because it creates significant dimensional errors in the final product. In this study, a method is proposed to calculate shrinkage error in SHM based on equations built from the data collected using F E A . Consequently, the calculation result is used to compensate the SHM shrinkage error. The experimental results of this study confirm that the error prediction model and the proposed compensation technique work efficiently in reducing SHM error.

Original languageEnglish
Pages (from-to)687-701
Number of pages15
JournalSeimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering
Issue number9
Publication statusPublished - 2020 Sept 5


  • Compensation
  • SLS hybrid milling
  • Shrinkage error

ASJC Scopus subject areas

  • Mechanical Engineering


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