Modares Mechanical Engineering

Modares Mechanical Engineering

Investigation of Interlayer Fracture of Printed Composite (Glass/ABS) Considering a Statistical Micromechanical Damage Model

Document Type : Original Research

Authors
Nabi Mehri Khansari 1
salar zare 2
hadi ghorbani 3
1 Assistant professor, sahand university of technology
2 sahand university of technology
3 tarbiat moderes university
10.48311/mme.25.2.107
Abstract
In this study, using a novel hybrid method (FDM+Fiber), continuous thermoplastic fiber composites (Glass/ABS) was produced using a 3D printer. This study investigated the challenges associated with incomplete impregnation between fibers and matrix in thermoplastic composites, especially printed specimens. This defect is caused by the formation of interlayer micropores that can behave similarly to microcracks and lead to a decrease in layer adhesion and a decrease in mechanical properties. In addition, the probabilistic and random distribution of micropores creates a kind of uncertainty in the properties of these materials and affects the path of the main crack growth. The innovation of this study is in providing a model based on micromechanical statistical damage and experimental results to predict the growth of the main crack in these materials. In this regard, different porosity percentages (10, 20, 30, and 40 percent) with normal, gamma, and uniform distributions have been used in cases with and without interference. Experimental and numerical results indicate that the use of statistical micromechanical damage models allows more accurate prediction of interlayer fracture behavior of Glass/ABS composites
Keywords
Fracture mechanics
Continuous Fiber-Reinforced Thermoplastic Composites
Additive Manufacturing
Statistical Damage Model

Subjects

[1] Ebadi Shishegaran M., Mehri Khansari N., and Ghorbani h. "Experimental and numerical investigation of interlayer fracture of glass/PP continuous fiber thermoplastic composite in mixed mode (I/II) %J Journal of Science and Technology of Composites," vol. 11, no. 3, pp. 2536-2545, 2024.
[2] Mehri-Khansari N., Ghorbani h., and Golzar M. "Impregnation Ability and Micromechanical Assessments of Pultruded GL/PP and GL/PA6 Thermoplastic Prepregs %J Journal of Aerospace Science and Technology," pp. -, 2024.
[3] Dickson A. N., Abourayana H. M., and Dowling D. P. J. P. "3D printing of fibre-reinforced thermoplastic composites using fused filament fabrication—A review," vol. 12, no. 10, p. 2188, 2020.
[4] Valino A. D., Dizon J. R. C., Espera Jr A. H., Chen Q., Messman J., and Advincula R. C. J. P. i. P. S. "Advances in 3D printing of thermoplastic polymer composites and nanocomposites," vol. 98, p. 101162, 2019.
[5] Yang C., Tian X., Liu T., Cao Y., and Li D. J. R. P. J. "3D printing for continuous fiber reinforced thermoplastic composites: mechanism and performance," vol. 23, no. 1, pp. 209-215, 2017.
[6] He Q., Wang H., Fu K., Ye L. J. C. s., and technology "3D printed continuous CF/PA6 composites: Effect of microscopic voids on mechanical performance," vol. 191, p. 108077, 2020.
[7] Budiansky B. and O'Connell R. J. "Elastic moduli of a cracked solid," International Journal of Solids and Structures, vol. 12, no. 2, pp. 81-97, 1976.
[8] Mori T. and Tanaka K. "Average stress in matrix and average elastic energy of materials with misfitting inclusions," Acta Metallurgica, vol. 21, no. 5, pp. 571-574, 1973.
[9] Huang Y. and Hu K. X. "A Generalized Self-Consistent Mechanics Method for Solids Containing Elliptical Inclusions," Journal of Applied Mechanics, vol. 62, no. 3, pp. 566-572, 1995.
[10] Hashin Z. "The differential scheme and its application to cracked materials," Journal of the Mechanics and Physics of Solids, vol. 36, no. 6, pp. 719-734, 1988.
[11] Deng H. and Nemat-Nasser S. "Microcrack Interaction and Shear Fault Failure," International Journal of Damage Mechanics, vol. 3, no. 1, pp. 3-37, 1994.
[12] Chudnovsky A., Dolgopolsky A., and Kachanov M. "Elastic interaction of a crack with a microcrack array—I. Formulation of the problem and general form of the solution," International Journal of Solids and Structures, vol. 23, no. 1, pp. 1-10, 1987.
[13] Kachanov M. "Elastic solids with many cracks: a simple method of analysis," International Journal of Solids and Structures, vol. 23, no. 1, pp. 23-43, 1987.
[14] Mehri Khansari N., Farrokhi A., and Mosavi A. J. E. S. M. "Orthotropic mode II shear test fixture: Iosipesque modification," vol. 7, no. 2, pp. 93-108, 2019.
[15] Mehri Khansari N. and Aliha M. R. M. "Mixed-modes (I/III) fracture of aluminum foam based on micromechanics of damage," International Journal of Damage Mechanics, vol. 32, no. 4, pp. 519-548, 2023.
[16] Fakoor M., Sabour M. H., and Khansari N. M. J. S. "A new approach for investigation of damage zone properties in orthotropic materials," vol. 1, p. X2, 2014.
[17] Mehri Khansari N., Danandeh Hesar H., Zare Hosseinabadi S. J. M. B. D. o. S., and Machines "Orthotropic failure criteria based on machine learning and micro-mechanical matrix adapting coefficient," pp. 1-24, 2024.
[18] Shahab Shamsirband N. M. K. "Micro-mechanical damage diagnosis methodologies based on machine learning and deep learning models[J]," Journal of Zhejiang University Science A & Springer, vol. 22, no. 8, pp. 585-608, 2021.
[19] Khansari N. M., Fakoor M., Berto F. J. T., and Mechanics A. F. "Probabilistic micromechanical damage model for mixed mode I/II fracture investigation of composite materials," Theoretical and Applied Fracture Mechanics, vol. 99, pp. 177-193, 2019.
[20] Khan T. et al. "Recent developments in improving the fracture toughness of 3D-printed fiber-reinforced polymer composites," vol. 283, p. 111622, 2024.
[21] Santos J. D., Guerrero J. M., Blanco N., Fajardo J. I., and Paltán C. A. J. P. "Numerical and experimental analysis of the mode I interlaminar fracture toughness in multidirectional 3D-printed thermoplastic composites reinforced with continuous carbon fiber," vol. 15, no. 10, p. 2403, 2023.
[22] Mattey R., Jewell B., Ghosh S., and Sain T. J. E. F. M. "Phase-field fracture coupled elasto-plastic constitutive model for 3D printed thermoplastics and composites," vol. 291, p. 109535, 2023.
[23] Qin Q. and Yu S.-W. "Quasi-micromechanical damage model for brittle solids with interacting microcracks," Mechanics of Materials, vol. 36, pp. 261-273, 2004.
[24] Sabor M. H., fakoor m., and Mehri Khansari N. "A model for investigation of damaged zone mechanical properties in crack tip vicinity of orthotropic materials," Modares Mechanical Engineering, vol. 14, no. 14, pp. 69-78, 2014.
Modares Mechanical Engineering
Volume 25, Issue 2
February 2025
Pages 107-115