Next Article in Journal
Rheology Effects on Predicted Fiber Orientation and Elastic Properties in Large Scale Polymer Composite Additive Manufacturing
Previous Article in Journal
Green Composites Reinforced with Plant-Based Fabrics: Cost and Eco-Impact Assessment
Article Menu

Export Article

Open AccessArticle
J. Compos. Sci. 2018, 2(1), 9; doi:10.3390/jcs2010009

Predicting Fatigue Damage of Composites Using Strength Degradation and Cumulative Damage Model

Department of Aerospace Engineering, San Diego State University, San Diego, CA 92182, USA
N & R Engineering, 6659 Pearl Rd # 201, Cleveland, OH 44130, USA
Author to whom correspondence should be addressed.
Received: 30 December 2017 / Revised: 8 February 2018 / Accepted: 8 February 2018 / Published: 14 February 2018
View Full-Text   |   Download PDF [26456 KB, uploaded 14 February 2018]   |  


This paper discusses the prediction of fatigue response of composites using an empirical strength and stiffness degradation scheme coupled to a cumulative damage accumulation approach. The cumulative damage accumulation approach is needed to account for the non-constant stress levels that arise due to stress distributions from stiffness degradation during the fatigue loading. Degradation of strength and stiffness during fatigue loading of the composite was implemented by following the empirical model presented by Shokrieh and Lessard with some modification and correction to the non-dimensional load parameter definition. The fatigue analysis was performed using ABAQUS™ finite element software using a user-defined material subroutine UMAT developed for the material response. Implementation results were first verified for unidirectional laminate test cases and validated by predicting stress versus life (S-N) curves for several laminate coupons test simulations and residual strengths of Open Hole Tension (OHT) specimens subjected to constant amplitude fatigue loading. View Full-Text
Keywords: CFRP composite; fatigue; strength; stiffness; UMAT CFRP composite; fatigue; strength; stiffness; UMAT

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Khan, A.I.; Venkataraman, S.; Miller, I. Predicting Fatigue Damage of Composites Using Strength Degradation and Cumulative Damage Model. J. Compos. Sci. 2018, 2, 9.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics



[Return to top]
J. Compos. Sci. EISSN 2504-477X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top