Fatigue life prediction of matrix dominated polymer composite materials
SCIE
SCOPUS
- Title
- Fatigue life prediction of matrix dominated polymer composite materials
- Authors
- Lee, CS; Hwang, W
- Date Issued
- 2000-10
- Publisher
- SOC PLASTICS ENG INC
- Abstract
- Fatigue life prediction is investigated analytically for matrix dominated polymer composite laminates having nonlinear stress/strain response, based on the fatigue modulus concept. Fatigue modulus degradation rate at any fatigue cycle was assumed as a power function of number of fatigue cycles. A new stress function describing the relation of initial fatigue modulus and elastic modulus was used to account for material non-linearity at the first cycle. It was assumed that fatigue modulus at failure is proportional to the applied stress level. A new fatigue life prediction equation as a function of applied stress is proposed. The prediction was verified experimentally using cross-ply carbon/epoxy laminate (CFRP) tube under torsional fatigue loading. It is shown that the proposed equation has wide applicability and agrees well with experimental data.
- Keywords
- DAMAGE MECHANICS; LAMINATE; DEGRADATION; FAILURE; MODEL
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/19824
- DOI
- 10.1002/pc.10234
- ISSN
- 0272-8397
- Article Type
- Article
- Citation
- POLYMER COMPOSITES, vol. 21, no. 5, page. 798 - 805, 2000-10
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