Delamination Fracture Toughness of Woven-Fabric Composites Under Mixed-Mode Loading

AIAA Journal ◽  
10.2514/2.747 ◽  
1999 ◽  
Vol 37 (4) ◽  
pp. 517-520 ◽  
Author(s):  
Nurudeen B. Adeyemi ◽  
Kunigal N. Shivakumar ◽  
Vishnu S. Avva
Keyword(s):  
Fracture Toughness ◽  
Mixed Mode ◽  
Woven Fabric ◽  
Mixed Mode Loading ◽  
Woven Fabric Composites ◽  
Delamination Fracture ◽  
Fabric Composites

Delamination fracture toughness of woven-fabric composites under mixed-mode loading

AIAA Journal ◽  
1999 ◽  
Vol 37 ◽  
pp. 517-520
Author(s):  
Nurudeen B. Adeyemi ◽  
Kunigal N. Shivakumar ◽  
Vishnu S. Avva
Keyword(s):  
Fracture Toughness ◽  
Mixed Mode ◽  
Woven Fabric ◽  
Mixed Mode Loading ◽  
Woven Fabric Composites ◽  
Delamination Fracture ◽  
Fabric Composites

Effects of Crimped Fiber Paths on Mixed Mode Delamination Behaviors in Woven Fabric Composites

2016 ◽  
Author(s):  
Paul V. Cavallaro ◽  
Andrew Hulton ◽  
Mahmoud Salama ◽  
Melvin W. Jee
Keyword(s):  
Fracture Toughness ◽  
Energy Release ◽  
Mixed Mode ◽  
Strain Energy ◽  
Strain Energy Release ◽  
Woven Fabric ◽  
Woven Fabric Composites ◽  
Fabric Composites ◽  
Energy Release Rates ◽  
Strain Energy Release Rates

This research investigated the fracture toughness and crack propagation behaviors of woven fabric reinforced polymer (WFRP) composite laminates subjected to single and mixed mode loadings using numerical models. The objectives were to characterize the fracture behaviors and toughness properties at the fiber/matrix interfaces and to identify mechanisms that can be exploited for increasing delamination resistance. The mode-I and mode-II strain energy release rates GI and GII, the effective critical strain energy release rate, Gc_eff, (also known as the mixed mode fracture toughness) and crack growth stabilities were determined as functions of crimped fiber paths using meso-scale, 2D multi-continuum finite element models. Three variations of a plain-woven fabric architecture were considered; each having different crimped fiber paths. The presence of mixed-mode strain energy release rates at the meso-scale due to the curvilinear fiber paths was shown to influence the interlaminar fracture toughness and was explored for pure single-mode and mixed-mode global loadings. It was concluded that woven fabric composites provided a Fracture Toughness Conversion Mechanism (FTCM) and their toughness properties were dependent upon and varied with positon along the crimped fiber paths. The FTCM was identified as an advanced tailoring mechanism that can be further utilized to improve toughness and damage tolerance thresholds especially when the mode-II fracture toughness GIIc is greater than the mode-I fracture toughness GIc.

Effect of manufacturing process on mixed-mode fracture toughness of woven fabric composites

1997 ◽  
Author(s):  
Nurudeen Adeyemi ◽  
Kunigal Shivakumar ◽  
Vishnu Avva ◽  
Nurudeen Adeyemi ◽  
Kunigal Shivakumar ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Manufacturing Process ◽  
Mixed Mode ◽  
Woven Fabric ◽  
Mixed Mode Fracture ◽  
Mode Fracture ◽  
Woven Fabric Composites ◽  
Fabric Composites

scholarly journals Mechanisms of Mode I Interlaminar Fracture of Glass Woven Fabric Composites

2000 ◽  
Vol 9 (3) ◽  
pp. 096369350000900 ◽  
Author(s):  
M. Kotaki ◽  
T. Kuriyama ◽  
H. Hamada ◽  
Z. Maekawa ◽  
I. Narisawa
Keyword(s):  
Fracture Toughness ◽  
Laminated Composites ◽  
Damage Zone ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Mode I ◽  
Interlaminar Fracture ◽  
Woven Fabric Composites ◽  
Fabric Composites ◽  
Silane Concentration

Mode I interlaminar fracture behaviours were investigated on the laminated composites reinforced with plain glass woven fabrics which were treated with different silane concentrations. The low silane concentration specimen indicated higher fracture toughness, compared to the high silane concentration specimen. This is due to the occurrence of the micro crack in the fibre strands. In the low silane concentration specimen, larger damage zone due to the micro crack was formed ahead of the crack tip.

Effects of Crimped Fiber Paths on Mixed Mode Delamination Behaviors in Woven Fabric Composites

2016 ◽  
Author(s):  
Paul V. Cavallaro ◽  
Andrew W. Hulton ◽  
Melvin W. Jee ◽  
Mahmoud Salama
Keyword(s):  
Mixed Mode ◽  
Woven Fabric ◽  
Woven Fabric Composites ◽  
Fabric Composites

Interlaminar fracture toughness of woven E-glass fabric composites

2011 ◽  
Vol 46 (13) ◽  
pp. 1583-1592 ◽  
Author(s):  
Steven P Blake ◽  
Keith A Berube ◽  
Roberto A Lopez-Anido
Keyword(s):  
Fracture Toughness ◽  
Fracture Behavior ◽  
Numerical Technique ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Resin Matrix ◽  
Periodic Pattern ◽  
Characterization Methods ◽  
Woven Fabric Composites ◽  
Fabric Composites

Composite materials fabricated using woven fabrics are characterized for fracture toughness. Crack propagation behavior in woven fabric composites is investigated with respect to the periodic pattern produced as a result of the weave structure. Additionally, experimental methods for determining fracture toughness are investigated for woven fabric composites and a numerical technique to detect crack onset is proposed. Fracture characterization methods for mode I, mode II, and mixed-mode are investigated. A case study encompassing DCB, ENF, and three MMB test configurations is presented for a typical marine-grade E-glass fiber reinforced composite with a toughened vinyl ester resin matrix. The aim of this article is to investigate the fracture behavior of a heavy woven fabric composite. The most important outcomes of this study are a numerical technique to detect crack initiation and a discussion of the fracture behavior of woven fabric composites.

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