A proposal to Investigate Stitched Composites Undergoing Delamination Using Multiscale Modeling Approach

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===Background===
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===Problem Description===
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Carbon fiber-reinforced composite (CFRC) materials are extensively used in the aerospace industry to enable significant weight savings due to their high in-plane specific strength and stiffness. However, this benefit is countered by their low out-of-plane properties, such as interlaminar strength, that make CFRC structures susceptible to delamination. To prevent delamination, through-the-thickness stitching has been shown experimentally alleviate the damage propagation due to impact in CFRCs. Material optimization of stitched composites is required to reduce delamination at a macroscale. Atomistic to macroscale structure-property relationships need to be established and quantified to reduce delamination behavior of stitched composites. This proposal presents a pathway to develop hierarchical multiscale modeling approach from all length scales to reduce delamination.
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[[Image:MS_Stitch_Slide.jpg|right|thumb|9000px|Investigation of Stitched Composites Undergoing Delamination Using a Multiscale Modeling Approach.]]
  
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===Macroscale===
  
===Corrosion mechanisms===
 
  
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===Microscale===
  
===Stress Corrosion Cracking===
 
  
 
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===Nanoscale===
===Atomistics===
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===Electronics Principles===
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===Electronic Scale===
  
  

Revision as of 15:40, 1 April 2017

Contents

Problem Description

Carbon fiber-reinforced composite (CFRC) materials are extensively used in the aerospace industry to enable significant weight savings due to their high in-plane specific strength and stiffness. However, this benefit is countered by their low out-of-plane properties, such as interlaminar strength, that make CFRC structures susceptible to delamination. To prevent delamination, through-the-thickness stitching has been shown experimentally alleviate the damage propagation due to impact in CFRCs. Material optimization of stitched composites is required to reduce delamination at a macroscale. Atomistic to macroscale structure-property relationships need to be established and quantified to reduce delamination behavior of stitched composites. This proposal presents a pathway to develop hierarchical multiscale modeling approach from all length scales to reduce delamination.

Investigation of Stitched Composites Undergoing Delamination Using a Multiscale Modeling Approach.

Macroscale

Microscale

Nanoscale

Electronic Scale

References

[1] Mouritz, A. P., et al. (1997). "A review of the effect of stitching on the in-plane mechanical properties of fibre-reinforced polymer composites." Composites Part A: Applied Science and Manufacturing 28(12): 979-991.

[2] Nishimura, A., et al. (1986). “New fabric structures for composite.” Recent Adv. In Japan and the United States: 29-36

[3] Tan, K. T., et al. (2010). "Effect of stitch density and stitch thread thickness on low-velocity impact damage of stitched composites." Composites Part A: Applied Science and Manufacturing 41(12): 1857-1868.

[4] Aktaş, A., et al. (2014). "Impact and post impact (CAI) behavior of stitched woven–knit hybrid composites." Composite Structures 116: 243-253.

[5] Tan, K. T., et al. (2013). "Effect of stitch density and stitch thread thickness on damage progression and failure characteristics of stitched composites under out-of-plane loading." Composites Science and Technology 74: 194-204.

[6] Liotier, P.-J., et al. (2010). "Characterization of 3D morphology and microcracks in composites reinforced by multi-axial multi-ply stitched preforms." Composites Part A: Applied Science and Manufacturing 41(5): 653-662.

[7] Carvelli, V. “Mutli-Scale Mechanical Numerical Analysis of Multi-Axial Composites.” 16th International Conference on Composite Materials: 1-7.

[8] Carvelli, V., et al. (2010). "Fatigue and post-fatigue tensile behaviour of non-crimp stitched and unstitched carbon/epoxy composites." Composites Science and Technology 70(15): 2216-2224.

[9] Bathgate, R. G., et al. (1997). "Effects of temperature on the creep behaviour of woven and stitched composites." Composite Structures 38(1–4): 435-445.

[10] Pang, F., et al. (1997). "Creep response of woven-fibre composites and the effect of stitching." Composites Science and Technology 57(1): 91-98.

[11] Tan, K. T., et al. (2010). "Experimental investigation of bridging law for single stitch fibre using Interlaminar tension test." Composite Structures 92(6): 1399-1409.

[12] Horstemeyer, M. (2012). Integrated Computational Materials Engineering (ICME) For Metals. Chapter 5: 146-147.

[13] Nouranian, S., et al. (2014). “An interatomic potential for saturated hydrocarbons based on the modified embedded-atom method.” Royal Society of Chemistry, 16: 6233.

[14] Khalatur P.G. (2012). Molecular Dynamics Simulations in Polymer Science: Methods and Main Results. Polymer Science: A Comprehensive Review, 1: 417-460.

[15] Changwoon, J. (2013). Interfacial shear strength of cured vinyl ester resin-graphite nanoplatelet from moleculr dynamic simulations.” Polymer 54: 3282-3289.

[16] Changwoon, J. (2012). “Relative Reactivity Volume Criterian for Cross-Linking: Application to Vinyl Ester Resin Molecular Dynamic Simulations.” Macromolecules, 45: 4876-4885.

[17] Odegard, G. M., et al. “Prediction of Mechanical Properties of Polymers with Various Force Fields.” American Institute of Aeronautics and Astronautics: 1-12.


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