On the use of length scale parameters to assess the static strength of notched 3D-printed PLA
作者: Adnan A. AhmedL. Susmel
作者单位: 1Department of Civil and Structural Engineering, the University of Sheffield, Mappin Street, Sheffield S1 3JD, UK
刊名: Fracture and Structural Integrity, 2017, Vol.11 (41), pp.252 - 259
来源数据库: Gruppo Italiano Frattura
DOI: 10.3221/IGF-ESIS.41.34
关键词: Additive ManufacturingPLATheory of Critical DistancesStatic FailureNotches
原始语种摘要: This paper aims to investigate the accuracy of the Theory of Critical Distances (TCD) in estimating static strength of notched additively manufactured PLA as both notch sharpness and infill angle vary. The TCD takes as its starting point the assumption that the extent of damage under static loading can be assessed successfully by using two different material parameters, i.e. (i) a critical distance whose length is closely related to the material microstructural features and an inherent (i.e., a defect free) material strength. Plain and notched specimens of 3D-printed PLA were manufactured horizontally by making the deposition angle vary in the range 0?-90?. Using the TCD in the form of the Point Method, failures were predicted by directly post-processing the linear-elastic stress fields...
全文获取路径: Gruppo Italiano Frattura 

  • static 静止的
  • sharpness 敏锐
  • parameters 参数
  • printed 印刷
  • length 距离
  • notched 有缺口的
  • scale 度盘
  • processing 加工
  • strength 强度
  • manufactured 出品