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고무변성 에폭시 수지의 균열선단 손상역 발달과 음향 방출 특성

Title
고무변성 에폭시 수지의 균열선단 손상역 발달과 음향 방출 특성
Other Titles
Growth Process and Acoustic Emission Characteristics of Damage Zone around a Crack Tip for Rubber-Modified Epoxy Resin
Author
최낙삼
Keywords
Fracture Mechanics; Fracture Toughness; Acoustic Emission; Damage Zone; Rubber-Modified Epoxy Resin; 파괴기구; 파괴인성; 음향방출; 손상역; 고무변성 에폭시수지
Issue Date
2002-08
Publisher
대한기계학회
Citation
대한기계학회 2002년도 제2회 재료 및 파괴부문 학술대회 논문집, page. 236-242
Abstract
A damage zone around a crack tip occurred before fracturing is a significant data, which offer the toughening mechanism of a materials. The growth processing of damage zone in the vicinity of crack tip for rubber-modified epoxy resin is investigated using an acoustic emission(AE) analysis system. The volume fractions of rubber(CTBN 1300×8) in rubber-modified epoxy resin are 5% and 15%. The fracture toughness(KIC) and the fracture energy(GIC) were measured using single notch 3 point bending specimens. The damage zone and rubber particles distributed around the crack tip of damaged specimens were observed by a polarization microscope and an atomic force microscope(AFM). The damage zone around crack tip of rubber-modified epoxy resin appears in 13.1% loading and develops into 57.2% loading based on 100 % fracture loading. The propagated-behavior of stable crack which initiated at 57.2% loading occurs in discontinuity. At the maximum loading, it has changed into unstable crack and the modified epoxy resin is broken
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE01485146https://repository.hanyang.ac.kr/handle/20.500.11754/157473
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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