Assessment of fatigue lifetime and characterization of fatigue crack behavior of aluminium scroll compressor using C-specimen

Sang Youn Park, Jungsub Lee, Jong Tae Heo, Gyeong Beom Lee, Hyun Hui Kim, Byoung Ho Choi

Research output: Contribution to journalArticle

Abstract

Currently, a scroll compressor is used in many industrial fields; hence, research on its reliability is important. The major loading type during operation is pressure. However, unexpected contact between scroll compressors typically occurs, and thus, the severe loading condition should be considered. To consider this condition, the study modified the scroll compressor's structure to a C-type specimen. The study applied cyclic axial load in the specimen. The main objective of the study is to define a proper fatigue life method for the aluminium scroll compressor and proper finite element method (FEM) modeling. To define the method, the study included a case study for various parameters, such as mean stress effects. Furthermore, a crack propagation study is presented. In the study, the Darveaux method that considers the Bauschinger effect of ductile material is used. It is expected that the consideration of the parameters can help define the fatigue life assessment of an aluminium scroll compressor.

Original languageEnglish
Article number3226
JournalApplied Sciences (Switzerland)
Volume10
Issue number9
DOIs
Publication statusPublished - 2020 May 1

Keywords

  • Crack initiation
  • Crack propagation
  • Finite element method
  • Life assessment
  • Scroll compressor

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

Cite this