Development of experimental methodology on fracture toughness of microscale polymer resins under in situ observation. Issue 1 (8th September 2019)

• Record Type: Journal Article
• Authors: Kaneko, Ryota; Kaneko, Eiichi; Sumigawa, Takashi; Kitamura, Takayuki
• Is Part Of: Material design & processing communications. Volume 2:Issue 1(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-09-08
• Subjects: ABS -- fracture toughness -- microscale polymer -- stress intensity factor; Materials -- Research -- Periodicals; Materials -- Design -- Periodicals; Materials -- Research; Materials -- Design; Electronic journals; Periodicals; 620.11
• DOI: 10.1002/mdp2.102
• Languages: English
• ISSNs: 2577-5476

Abstract

Abstract: The purpose of this study is to develop a method on fracture toughness test for single‐digit micrometer scale polymeric materials, including shape design of the specimen and introduction of precrack. Acrylonitrile butadiene styrene (ABS) polymer resin is employed as test material for the development. The specimens are carefully manufactured by means of the focused ion beam (FIB), and a precracks are successfully introduced at the notch root by the asymmetric loading. After then, the specimens are reshaped, and the mode I load is applied for the evaluation of fracture toughness. The stress field around the crack tip is calculated by the finite element analysis, and the critical stress intensity factor K IC is found to be K IC = 0.145 to 0.175 MPa m .