Tests were carried out to determine the interlaminar fracture toughness of stitch-bonded biaxial polymer matrix carbon nanotube nanocomposites for mode I, II, and I-II including durability effects. Analysis of the test specimens in terms of mode I energy release rates showed good agreement among Modified Beam Theory, Compliance Calibration, and Modified Compliance Calibration methods. End-Notched Flexure (ENF) and four point End-Notched Flexure (4ENF) tests gave very consistent crack initiation and propagation results for mode II fracture. The results show that the critical mode I energy release rate for delamination decreases monotonically with increasing mode II loading. The effects of accelerated aging (60°C and 90% Rh) on fracture properties were studied. Early accelerated aging (0–12 months) has the dominant diminishing effect on energy release rate initiation and propagation in composites and nanocomposites.
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ASME 2016 International Mechanical Engineering Congress and Exposition
November 11–17, 2016
Phoenix, Arizona, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-5051-0
PROCEEDINGS PAPER
The Effects of In-Service Induced Reduction of Bonding Quality on the Mode I, II, and I-II Fracture Toughness of CNT Nanocomposites Available to Purchase
Masoud Yekani Fard,
Masoud Yekani Fard
Arizona State University, Tempe, AZ
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Brian Raji,
Brian Raji
Pipe Reconstruction Inc., Phoenix, AZ
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John M. Woodward,
John M. Woodward
Arizona State University, Tempe, AZ
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Aditi Chattopadhyay
Aditi Chattopadhyay
Arizona State University, Tempe, AZ
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Masoud Yekani Fard
Arizona State University, Tempe, AZ
Brian Raji
Pipe Reconstruction Inc., Phoenix, AZ
John M. Woodward
Arizona State University, Tempe, AZ
Aditi Chattopadhyay
Arizona State University, Tempe, AZ
Paper No:
IMECE2016-66907, V001T03A037; 6 pages
Published Online:
February 8, 2017
Citation
Yekani Fard, M, Raji, B, Woodward, JM, & Chattopadhyay, A. "The Effects of In-Service Induced Reduction of Bonding Quality on the Mode I, II, and I-II Fracture Toughness of CNT Nanocomposites." Proceedings of the ASME 2016 International Mechanical Engineering Congress and Exposition. Volume 1: Advances in Aerospace Technology. Phoenix, Arizona, USA. November 11–17, 2016. V001T03A037. ASME. https://doi.org/10.1115/IMECE2016-66907
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