Browse > Article

Effects of Elastic Modulus Ratio on Internal Stresses in Short Fiber Composites  

김홍건 (전주대학교 기계공학과)
노홍길 (전북대학교 대학원 정밀기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.13, no.4, 2004 , pp. 73-78 More about this Journal
Abstract
The conventional SLT(Shear Lag Theory) which has been proven that it can not provide sufficiently accurate strengthening predictions in elastic regime when the fiber aspect ratio is small. This paper is an extented work to improve it by modifying the load transfer mechanism called NSLT(New Shear Lag Theory), which takes into account the stress transfer across the fiber ends and the SCF(Stress Concentration Factor) that exists in the matrix regions near the fiber ends. The key point of the model development is to determine the major controlling factor among the material and geometrical coefficients. It is found that the most affecting factor is the fiber/matrix elastic modulus ratio. It is also found that the proposed model gives a good result that has the capability to correctly predict the elastic properties such as interfacial shear stresses and local stress variations in the small fiber aspect ratio regime.
Keywords
Composite; Fiber Aspect Ratio; Volume Fraction Ratio; SCF; NSLT; Elastic Modulus Ratio;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Elastic-Plastic Element Analysis of Short Fiber Composites /
[ Agarwal, B. D.;Lifsitz, J. M.;Broudtman, L. J. ] / Fiber Science and Technology   DOI   ScienceOn
2 /
[ Agarwal, B. D.;Broutman, L. J. ] / Analysis and performance of Fiber Composites
3 The Elasticity and Strength of Paper and Other Fibrous Materials /
[ Cox, H. L. ] / British Journal of Applied Physics   DOI   ScienceOn
4 Stress Transfer in shear Deformable Discontinuous Composites /
[ Kim, H. G. ] / KSME Jounal
5 Analytical Study on the Elastic-Plastic Transition in Short Fiber Reinforced Composites /
[ Kim, H. G. ] / KSME International Journal
6 Stress Analysis of a Discontinuous Composite Using Mechanics of Materials Approach /
[ Kim, H. G. ] / KSMTE
7 A Comparison between a Shear Lag Type Model and an Eshelby Type Model in Predicting the Mechanical Properties of Short Fiber Composite /
[ Taya, M.;Arsenault, R. J. ] / Scripta Metallurgica   DOI   ScienceOn