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Crystals
Special Issues
Crack Propagation and Fracture of Composites
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Crack Propagation and Fracture of Composites

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Hybrid and Composite Crystalline Materials".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 2872

Special Issue Editors

Dr. Kai Huang

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Guest Editor
Department of Astronautic Science and Mechanics, Harbin Institute of Technology, Harbin, China
Interests: fracture mechanics; crack initiation/propagation; damage evolution; composite/nonhomogeneous materials
Prof. Dr. Hongjun Yu

E-Mail Website
Guest Editor
Department of Astronautic Science and Mechanics, Harbin Institute of Technology, Harbin 150001, China
Interests: fracture mechanics; nonhomogeneous materials; interface cracking; crack propagation
Prof. Dr. Yabin Yan

E-Mail Website
Guest Editor
School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China
Interests: interface mechanics; cohesive zone model; thin films

Special Issue Information

Dear Colleagues,

This proposed Special Issue of Crystals aims to present contributions related to the crack initiation and propagation, damage evolution, and fracture and failure of a great variety of composite materials and structures. Taking advantage of many excellent features, composites have been successfully used in engineering areas, such as aerospace, aircraft, automobile, manufacturing, micro/nanoelectronic, chemical, and medical industries. However, the existence of intrinsic material interfaces and manufactured defects (e.g., micro-cracks or voids) inside of composites will result in complicated stress concentration behaviours under external mechanical/thermal loading conditions when in service, and bring about potential risks of structural and functional failure caused by crack initiation/propagation and fracture. Considering these concerns, comprehensive and systematic research efforts are encouraged to achieve an in-depth understanding of the subject matter and further advance this research field.

Dr. Kai Huang
Prof. Dr. Hongjun Yu
Prof. Dr. Yabin Yan
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • composites
  • fracture
  • crack initiation/propagation
  • damage evolution
  • interfaces
  • delamination

Published Papers (2 papers)

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Research

19 pages, 4055 KiB  
Article
Phase Field Modeling of Crack Growth with Viscoplasticity
by Qianyu Shi, Hongjun Yu, Xiangyuhan Wang, Kai Huang and Jian Han
Crystals 2023, 13(5), 854; https://doi.org/10.3390/cryst13050854 - 22 May 2023
Viewed by 1597
Abstract
The fracture of viscoplastic materials is a complex process due to its time-dependent and plastic responses. Numerical simulation for fractures plays a significant role in crack prediction and failure analysis. In recent years, the phase field model has become a competitive approach to [...] Read more.
The fracture of viscoplastic materials is a complex process due to its time-dependent and plastic responses. Numerical simulation for fractures plays a significant role in crack prediction and failure analysis. In recent years, the phase field model has become a competitive approach to predict crack growth and has been extended to inelastic materials, such as elasto-plastic, viscoelastic and viscoplastic materials, etc. However, the contribution of inelastic energy to crack growth is seldom studied. For this reason, we implement the fracture phase field model coupled with a viscoplastic constitutive in a finite element framework, in which the elastic energy and inelastic energy are used as crack driving forces. The implicit algorithm for a viscoplastic constitutive is presented; this procedure is suitable for other viscoplastic constitutive relations. The strain rate effect, creep effect, stress relaxation effect and cyclic loading responses are tested using a single-element model with different inelastic energy contributions. A titanium alloy plate specimen and a stainless-steel plate specimen under tension are studied and compared with the experimental observations in the existing literature. The results show that the above typical damage phenomenon and fracture process can be well reproduced. The inelastic energy significantly accelerates the evolution of the phase field of viscoplastic materials. For cyclic loadings, the acceleration effect for low frequency is more significant than for high frequency. The influence of the weight factor of inelastic energy β on the force-displacement curve mainly occurs after reaching the maximum force point. With the increase of β, the force drops faster in the force-displacement curve. The inelastic energy has a slight effect on the crack growth paths. Full article
(This article belongs to the Special Issue Crack Propagation and Fracture of Composites)
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16 pages, 7559 KiB  
Article
Investigation on the Progressive Damage and Bearing Failure Behavior of Composite Laminated Bolted Joints under Tension
by Gang Liu, Ce Li, Wenjun Luo, Feng Liao, Yidong Zhang and Shan Zeng
Crystals 2023, 13(5), 729; https://doi.org/10.3390/cryst13050729 - 26 Apr 2023
Cited by 1 | Viewed by 1003
Abstract
Composite laminated bolted joints are increasingly used in the aerospace industry, and most researchers are involved in the study of the failure behavior of composite bolted joints’ structures. Because of the complexity and stability of the structure, precisely predicting the damage evolution and [...] Read more.
Composite laminated bolted joints are increasingly used in the aerospace industry, and most researchers are involved in the study of the failure behavior of composite bolted joints’ structures. Because of the complexity and stability of the structure, precisely predicting the damage evolution and failure behavior of the composite laminated bolted joint becomes rather difficult. In this paper, an asymptotic damage model is proposed to predict the failure behavior of the composite bolted joint structure. The model is based on the frame of mainstream criteria and some improvements are made to adapt to the particularity of composite laminated bolted joints. Combining the damage model with the finite element method, the failure behavior of single-lap and double-lap bolted joint structures are predicted and analyzed. In order to guarantee the reliability of the model, the corresponding experimental study is conducted, and the results show that the simulation curve and the experimental data are in good agreement. This damage model can further predict the failure behavior of various types of complex composite laminated bolted joints effectively. Full article
(This article belongs to the Special Issue Crack Propagation and Fracture of Composites)
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