Flexural fatigue and fracture toughness behavior of nanoclay reinforced carbon fiber epoxy composites
Abstract
3-point flexural fatigue and Mode I interlaminar fracture tests were done to study the fatigue life and fracture toughness of nanoclay added carbon fiber epoxy composites. Fatigue life data was analyzed using Weibull distribution function, validated with Kolmogorov-Smirnov goodness-of-fit, and predicted by combined Weibull and Sigmoidal models, respectively. The nanophased samples showed more than 300% improvement in mean and predicted fatigue life. At 0.7 stress level, the nanophased samples passed the ‘run-out’ fatigue criteria (106 cycles), whereas, the neat samples failed much earlier. The interlaminar fracture toughness of nanophased samples was also enhanced significantly by 71% over neat samples. Optical and scanning electron microscopic images of the nanophased fractured samples revealed certain features that improved the respective fatigue and fracture properties of the composites.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 27, 2020
- Source ID
- 10.1177/0021998320935166
Entities
People
- Bodiuzzaman Jony
- Mahesh Hosur
- Md. Sarower Tareq
- Mohammad Al Ahsan
- Shaik Jeelani
- Shaik Zainuddin
Organizations
- Army Research Office
- National Science Foundation
- Purdue University
- Texas A&M University–Kingsville
- Tuskegee University
- University of Alabama