Article
Engineering, Biomedical
Shirsha Bose, Simin Li, Elisa Mele, Vadim V. Silberschmidt
Summary: This study analyzed the fracture behavior of pure collagen films in both air and water. The results showed that the specimens tested in air exhibited rapid crack propagation in a brittle fashion, while a significant amount of plastic deformation was observed in the specimens tested in water. The fracture toughness parameters for pure collagen in air and water were estimated using different fracture mechanics approaches, and the structural changes linked to collagen fibrils in the crack-tip area and fracture surface were observed using scanning electron microscopy.
ACTA BIOMATERIALIA
(2022)
Article
Multidisciplinary Sciences
Hewan Li, Jian Liu, Laigui Wang, Tianjiao Ren
Summary: This paper proposes a method to analyze rock samples with different inclination angles from the standpoint of energy, using the bond-base peridynamic theory and the PMB model of brittle materials, combined with laboratory experiments. The whole process of shearing is analyzed, and the LAMMPS software is used to simulate the internal energy change of rock-like materials under shear conditions. The result shows that prefabricated cracks and the inclination of cracks are important factors for specimen damage, which has important theoretical value for rock mechanics research. The research results can reduce the occurrence of rock burst accidents, the difficulty of mine support, and the cost of mining engineering, as well as improve mine safety levels.
SCIENTIFIC REPORTS
(2023)
Article
Engineering, Manufacturing
T. Khan, M. S. Irfan, W. J. Cantwell, R. Umer
Summary: Pre-cracked carbon fiber reinforced composite laminates were manufactured and repaired using the vacuum assisted resin transfer molding process. The effects of healing parameters on fracture toughness were investigated using a factorial design of experiments. The results showed that joining temperature had the most significant influence on fracture toughness, followed by contact time. Optimizing the processing parameters can enhance fracture toughness.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Construction & Building Technology
Yu-Cheng Kan, Ming-Gin Lee, Hung-Wei Lee
Summary: This paper investigates the behavior of fracture mechanics and fracture properties of epoxy-repaired concrete in Mode I fracture. The fracture toughness and fracture energy of the repaired concrete can be improved by epoxy resin and mortar, with both increasing with the amount of fine sand content in epoxy mortar up to the workability limit. The Mode I fracture behavior of the repaired concrete exhibits higher resistance to fracture and greater ductility compared to plain concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Ceramics
Xi Shi, Nitish Kumar, Jacob L. Jones, Mark Hoffman
Summary: The fracture properties of 0.94(Na0.5Bi0.5)TiO3-0.06BaTiO(3) relaxor ferroelectrics were investigated using the Vickers indentation method and crack tip opening displacement calculation. It was found that unpoled and poled samples exhibited different fracture toughness, with crack growth influenced by residual stress and electromechanical strain. The crack propagation rate was affected by the applied electric field amplitudes, with evidence of a saturation threshold for crack propagation in relaxor ferroelectrics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Engineering, Geological
Mahmoud Alneasan, Abdel Kareem Alzo'ubi
Summary: This study investigated the effect of temperature on the fracture characteristics of granite. The experimental results showed that the fracture behavior of granite changed from brittle to ductile as the temperature increased. The crack tip speed was found to be very low at high temperatures, indicating a slower crack growth rate.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Peicheng Mo, Jiarong Chen, Chao Chen, Haiqing Qin, Feng Lin
Summary: Polycrystalline cubic boron nitride composites (PCBN) were synthesized by mixing cBN micro-powder, Zr powder, and Al powder in different mass ratios under high temperature and ultra-high pressure conditions. The phase composition and microstructure of the composites were analyzed, and the effects of different Zr/Al mass ratios on the sintering behavior and related properties of PCBN composites were studied. The research found that the highest hardness of the sample, 33.4 GPa, and the best fracture toughness, 6.6 MPa·m(1/2), were achieved when the Zr/Al ratio was 16 wt%:8 wt% (2:1). Furthermore, a PCBN composite with the best density, porosity as low as 0.7%, and the highest strength of 864.2 MPa was obtained when the Zr/Al ratio was 12 wt%:12 wt% (1:1).
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Multidisciplinary Sciences
Elsiddig Elmukashfi
Summary: A method for determining critical tearing energy in rubber-like materials using stored elastic energy is proposed. The study discovered that at lower unloading rates, the Mullins effect dominates and viscous dissipation is minor, while at higher unloading rates, viscous dissipation becomes significant.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Kaitlynn M. Conway, Cody Kunka, Benjamin C. White, Garrett J. Pataky, Brad L. Boyce
Summary: Fracture toughness, rather than strength, is often the limiting factor of structural materials. Developing new base materials with improved fracture toughness often takes more than a decade. Alternatively, topological design has recently been expanded by additive manufacturing to improve fracture toughness in a cost-effective and simple manner across a range of materials.
MATERIALS & DESIGN
(2021)
Article
Materials Science, Composites
Po-Chun Chuang, Jia-Lin Tsai
Summary: Nanocomposites with aligned graphene were successfully fabricated for crack extension detection. The aligned graphene improved the electrical conductivity of the nanocomposite, and the resistance measurements were effective in detecting crack extension in the specimens.
COMPOSITES COMMUNICATIONS
(2021)
Review
Dentistry, Oral Surgery & Medicine
Sishi Chen, Dwayne Arola, Domenico Ricucci, Brian E. Bergeron, John A. Branton, Li-sha Gu, Franklin R. Tay
Summary: This review discusses the biomechanical properties of cracks and fractures in crown and root dentine, and attempts to explain why cracked teeth and vertical root fractures are so common. The implications of this knowledge are used to justify how these defects are managed clinically.
JOURNAL OF DENTISTRY
(2023)
Article
Materials Science, Ceramics
Maurya Sandeep Pradeepkumar, K. P. Sibin, Mohammed Adnan Hasan, Arjun Dey, Anoop Kumar Mukhopadhyay
Summary: The study evaluates the nano-scale load dependency of fracture toughness of indium tin oxide coating on silicon substrate using nanoindentation methods. It is observed that at loads above 40 mN, multiple cracks form in addition to the radial cracks, eventually leading to coating chipping off at 150-200 mN. The values of fracture toughness are sensitive to load variations and the strain energy release method results in higher values.
CERAMICS INTERNATIONAL
(2021)
Article
Mechanics
Zhao Duan, Chenxi Dong, Xusheng Yan, Qiang Sun, Bin Li
Summary: This study investigates the fracture damage behavior of loess using three-point bending tests and explores the relationship between crack angles and mechanical strength, crack evolution, and acoustic emission signals. The results provide an in-depth understanding of the fracture damage mechanism of loess.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Engineering, Mechanical
Marco Maurizi, Bryce W. Edwards, Chao Gao, Julia R. Greer, Filippo Berto
Summary: Nano-architected lattices, a novel class of mechanical metamaterials, demonstrate unprecedented mechanical properties by exploiting small scale material effects and structural topology. However, the understanding of fracture characteristics and properties of these 3D nano-architected lattices still hinders the design and realization of future engineering applications.
EXTREME MECHANICS LETTERS
(2022)
Article
Engineering, Mechanical
Reza Mohammadi, Roya Akrami, Maher Assaad, Mohamed Nasor, Ahmed Imran, Mohammad Fotouhi
Summary: This study investigated the fatigue properties of carbon fiber-reinforced polymer composite laminates and explored the effect of incorporating polysulfone nanofibers as an interleaving material. The results showed that adding polysulfone nanofibers significantly improved the fracture toughness and fatigue resistance of the composite laminates.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Yanzheng Wang, Qian Wu, Yiran Tian, Guoliang Huang
Summary: This paper proposes the microstructure design of an odd plate and investigates the directional wave energy amplification and the presence of interface waves in odd plates through theoretical and numerical analysis. The research findings contribute to the understanding of elastic behavior in 2D non-Hermitian systems.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
F. Greco, D. Codony, H. Mohammadi, S. Fernandez-Mendez, I. Arias
Summary: This study overcomes the difficulty of harnessing the flexoelectric effect by designing multiscale metamaterials. Through topology optimization calculations, we obtain optimal structures for various apparent piezoelectric properties and find that low-area-fraction lattices are the preferred choice. The results show competitive estimations of apparent piezoelectricity compared to reference materials such as quartz and PZT ceramics.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Xiaoxuan Zhang, Tryaksh Gupta, Zhenlin Wang, Amalie Trewartha, Abraham Anapolsky, Krishna Garikipati
Summary: This study presents a computational framework for coupled electro-chemo-(nonlinear) mechanics at the particle scale in solid-state batteries, including interfacial fracture, degradation in charge transfer, and stress-dependent kinetics. The discontinuous finite element method allows for arbitrary particle shapes and geometries.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Chengguan Zhang, Xavier Balandraud, Yongjun He
Summary: The coexistence of both austenite and martensite is a common characteristic in Shape Memory Alloys (SMAs). The multiple-domain microstructures, consisting of austenite, martensite twins, and individual martensite variants, evolve collectively during the phase transformation, affecting the material's macroscopic response. This paper presents an experimentally observed interface consisting of five domains in a Ni-Mn-Ga single-crystal, and analyzes the effects of thermal loading path and material initial state on the domain pattern formation.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Shaobao Liu, Haiqian Yang, Guang-Kui Xu, Jingbo Wu, Ru Tao, Meng Wang, Rongyan He, Yulong Han, Guy M. Genin, Tian Jian Lu, Feng Xu
Summary: The balance between stress and adhesion plays a crucial role in governing the behaviors of adherent cells, such as cell migration. In certain microenvironments, such as tumor, variations in hydrostatic pressure can significantly impact cell volume and adhesion, which in turn affects cell behavior.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Xun Xiong, Qinglei Zeng, Yonghuan Wang, Ying Li
Summary: In this work, the authors investigate the possibility of enhancing the resistance to crack growth in brittle materials through microstructure design. They establish a computational framework to simulate crack propagation and characterize fracture energy. The effects of different types of voids on toughening mechanisms are explored, and the critical conditions for embrittlement-toughening transition are identified. The study also discusses the difference between void toughening in brittle and ductile materials, and extends the toughening strategy to nacre-like materials.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Huan Wang, Yong-Quan Liu, Jiu-Tao Hang, Guang-Kui Xu, Xi-Qiao Feng
Summary: This study establishes a cytoarchitectural model to accurately capture the buckling and postbuckling behaviors of epithelia under fast compression. The stress evolution of epithelia is divided into three stages: loading, phase transition, and stress recovery. The postbuckling process is governed by the active tension generated by the actomyosin network. The study also proposes a minimal model that predicts the flattening time and stress recovery extent as functions of applied strain or strain rate, in agreement with simulations and experiments.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Lei Liu, Hao Liu, Yuming He, Dabiao Liu
Summary: This study investigates the mechanics and topologically complex morphologies of twisted rubber filaments using a combination of experiment and finite strain theory. A finite strain theory for hyperelastic filaments under combined tension, bending, and torsion has been established, and an experimental and theoretical morphological phase diagram has been constructed. The results accurately determine the configuration and critical points of phase transitions, and the theoretical predictions agree closely with the measurements.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Abhishek Painuly, Kunnath Ranjith, Avinash Gupta
Summary: This paper analyzes the interfacial waves caused by frictional slipping and studies their dispersion relation and wave modes. By studying the slip waves in a geophysical model, the surface wave dispersion phenomenon is explored, and an alternative explanation is proposed.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Houlin Xu, Joshua Vievering, Hoang T. Nguyen, Yupeng Zhang, Jia-Liang Le, Zdenek P. Bazant
Summary: Motivated by the extraordinary strength of nacre, this study investigated the probabilistic distribution of fishnet strength using Monte Carlo simulations and found that previous analytical solutions are not applicable for fishnets with a large number of links. By approximating large-scale fishnets as a continuum with cracks or holes, the study revealed that the strength distribution follows the Weibull distribution. This new model has significance for optimizing the strength-weight ratio in printed material structures.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Souhayl Sadik, Arash Yavari
Summary: This paper revisits the mathematical foundations of nonlinear viscoelasticity and studies the geometry of viscoelastic deformations. It discusses the decomposition of the deformation gradient into elastic and viscous distortions and concludes that the viscous distortion can only be a two-point tensor. The governing equations of nonlinear viscoelasticity are derived and the constitutive and kinetic equations for various types of viscoelastic solids are discussed.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Wen Cheng, Hongkuan Zhang, Yu Wei, Kun Wang, Gengkai Hu
Summary: In this study, we propose a phenomenon similar to Thouless pumping for a continuous in-plane elastic system, enabling topological transport of elastic waves through spatial modulation of material elasticity. By incorporating specific lattice microstructures, termed pentamode materials, precise and robust control over elastic wave propagation is achieved.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)
Article
Materials Science, Multidisciplinary
Linda Werneck, Mertcan Han, Erdost Yildiz, Marc-Andre Keip, Metin Sitti, Michael Ortiz
Summary: We have developed a simple model that describes the ionic current through neuronal membranes by considering the membrane potential and extracellular ion concentration. The model combines a simplified Poisson-Nernst-Planck model of ion transport through individual ion channels with channel activation functions calibrated from experimental data. The calibrated model accounts for the transport of calcium, sodium, potassium, and chloride and shows remarkable agreement with experimentally measured current-voltage curves for human neural cells.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2024)