Article
Materials Science, Multidisciplinary
M. T. Aranda, I. G. Garcia, A. Quintanas-Corominas, J. Reinoso
Summary: This study investigates the parameters setting of curved weak interfaces as crack arrestors in structures. It is found that the ratio of interface to bulk fracture toughness has a clear effect on crack deviation. However, the results vary among different analysis methods due to their different assumptions.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Polymer Science
Yuki Ogawa, Kimiyoshi Naito, Keisuke Harada, Hiroyuki Oguma
Summary: This study compared and analyzed the critical separation energy of three SGA adhesives, as well as examined the mechanical properties of the bond. It was found that the highly ductile adhesive showed plastic deformation in the steel adherends during the loading-unloading test, while the high tensile strength and modulus adhesives experienced a sudden decrease in load without plastic deformation. The critical separation energy increased with increasing adhesive thickness, and the highly ductile adhesives were more affected by adhesive thickness than highly strength adhesives.
Article
Mechanics
D. Pranavi, A. Rajagopal, J. N. Reddy
Summary: The proposed phase field model considers interfacial damage for different fiber configurations in composite materials, introducing anisotropy and capturing distinct contributions of fibers and matrix in elastic equilibrium. By considering factors such as fiber orientation, interface properties, and laminate configuration, the model captures predominant failure phenomena in composite materials.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Wanying Du, Baoshuai Han, Xuewen Li, Hao Wu, Kesong Miao, Rengeng Li, He Wu, Chenglu Liu, Wenbin Fang, Guohua Fan
Summary: In this study, the fracture toughness of the Ti2AlNb/Ti6Al4V layered metal composite prepared by vacuum hot pressing was tested, and the fracture mechanism was investigated through in-situ fracture mechanics process. The results showed that the composite had a KIC value of 70 MPa·m1/2, which was more than twice higher than that of Ti2AlNb alloy. The presence of layered structure, tough Ti6Al4V layer, and interface layer contributed to the complex crack propagation and significant improvement in fracture toughness of the composite.
Article
Materials Science, Composites
Wei Tan, Emilio Martinez-Paneda
Summary: The computational framework accurately captures the crack path, interface debonding, and load versus displacement response of fiber-reinforced polymer composites. Sensitivity analysis on the crack growth resistance curve to matrix fracture toughness and fiber-matrix interface properties, as well as the influence of porosity on the R-curve, provide insights into microscopic fracture mechanisms and pave the way for efficient design of high fracture toughness composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Mechanics
Sathiskumar Anusuya Ponnusami, Jayaprakash Krishnasamy, Sergio Turteltaub, Sybrand Van der Zwaag
Summary: The influence of the cohesive zone length on the crack driving force in a system of particles dispersed in a composite material matrix is analyzed. The study shows that the process zone length scale parameter has a critical influence on the magnitude and direction of the crack driving force. Numerical simulations demonstrate that the driving force magnitude is directly dependent on the length scale parameter, and the presence of a cohesive zone significantly affects the direction of the driving force.
ENGINEERING FRACTURE MECHANICS
(2022)
Article
Mechanics
Leslie Banks-Sills, Ofir Shor, Ido Simon, Tomer Chocron, Victor Fourman
Summary: In Part I of this study, fracture toughness tests were conducted on two laminate composites in modes I, II and mixed modes I/II. Both composites consisted of carbon fibers in an epoxy matrix. The tests used ASTM and ISO standards and included double cantilever beam, end-notched flexure, and mixed mode bending specimens. Part II of the study reported micro-computerized tomography on some of the specimens, linking the experimental behavior to the micromechanical structure of the materials. Numerical simulations using a cohesive zone model and finite element method were performed to gain better understanding of the observed failure behavior.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Engineering, Mechanical
L. Chen, R. de Borst
Summary: This article introduces the modeling of discrete interfaces in the phase field regularization framework and compares the applicability of different phase field models. The method combines the advantages of discrete and smeared approaches to improve the accuracy of interface modeling. The effectiveness of the method is demonstrated through several numerical examples.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2022)
Article
Materials Science, Multidisciplinary
Heshan Bai, Ruixiang Bai, Tianyu Zhao, Zhenkun Lei, Qian Li, Cheng Yan, Xiang Hong, Chen Liu
Summary: Vitrimer composites with bond-exchange reactions exhibit advantages in repair and recyclability. This study investigates the interfacial fracture properties of vitrimer carbon fiber composites with different epoxy/anhydride ratios. Experimental and numerical methods are used to analyze the composites' fracture behavior and develop a numerical simulation method to evaluate the interlaminar properties of composites.
MATERIALS & DESIGN
(2023)
Article
Materials Science, Composites
Yuki Fujita, Satoshi Noda, Junichi Takahashi, Emile S. Greenhalgh, Soraia Pimenta
Summary: This paper investigates the fracture behavior of injection-moulded short-fibre composites and finds that the fracture toughness of the material increases with increasing fibre orientation, moisture content, and temperature. The increase in toughness is related to changes in failure and toughening mechanisms.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Mechanics
Mathilde Zani, Daniele Fanteria, Anita Catapano, Marco Montemurro
Summary: This study presents a consistent energy-based cohesive zone model for simulating the mode I delamination behavior of FUMD laminates and validates the effectiveness of the model through experiments. The numerical simulations closely replicate the delamination behavior of DCB specimens, but with some differences compared to experimental results.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Mechanical
J. Zambrano, S. Toro, P. J. Sanchez, F. P. Duda, C. G. Mendez, A. E. Huespe
Summary: The interaction phenomenon between a propagating crack and an interface is studied using a phase-field approach and a cohesive surface model. The study finds that the main mechanisms of this interaction include crack deflection into the interface, crack penetration, and crack kinking out of the interface. The occurrence of each mechanism depends on the fracture properties of the interface and the medium. Additionally, the study analyzes the apparent increase of structural toughness due to the crack-interface interaction and the mechanisms leading to this outcome.
INTERNATIONAL JOURNAL OF PLASTICITY
(2022)
Article
Mechanics
Bin Chen, Sam Coppieters, Erik Jungstedt
Summary: We propose an element-removal (ER) global digital image correlation (DIC) method to improve the measurement accuracy of discontinuous deformation fields, such as crack propagation. The proposed ER-global-DIC algorithm iteratively identifies and removes all the elements covering the crack, during the updating of displacement fields. The effectiveness and accuracy of the proposed method are validated through synthetically deformed images and applied to measure discontinuous displacement fields containing a crack deflection.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Mechanics
T. Laschuetza, Th. Seelig
Summary: The role of inertia effects during crack formation under non-singular static pre-stress is investigated using a linear softening cohesive zone model. In the case of a 1D tensile bar, about one third of the released strain energy is converted into kinetic energy during the finite time of decohesion. Results from dynamic finite element analyses using the same cohesive zone model are compared with predictions from finite fracture mechanics in the case of crack initiation from a circular hole in a 2D plate under remote tension or compression, showing a complex dependence on the hole radius. Both methods capture the critical load for crack initiation at the hole well, but only the numerical cohesive zone model analyses resolve the highly transient process of crack nucleation.
ENGINEERING FRACTURE MECHANICS
(2021)
Article
Materials Science, Ceramics
Lei Liu, Kenji Shinozaki
Summary: Silver nanoparticles were successfully incorporated into borosilicate glass using spark plasma sintering. Starting with coarse glass powder resulted in a higher concentration of silver nanoparticle precipitates and enhanced fracture toughness.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Mechanical
Vladislav Yakubov, Peidong He, Jamie J. Kruzic, Xiaopeng Li
Summary: The AlSi10Mg alloy modified with 4 wt.% cerium was fabricated using selective laser melting and heat-treated, showing a fine microstructure and good heat resistance. The addition of cerium did not affect the alloy hardness.
AUSTRALIAN JOURNAL OF MECHANICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
Joshua D. Pribe, Halsey E. Ostergaard, Thomas Siegmund, Jamie J. Kruzic
Summary: This study presents incremental finite element computations of creep-fatigue crack growth in Alloy 718 at 650°C in air. The computations predict crack growth with post-overload retardation, which depends on the overload ratio. It is also found that dynamic recovery and geometrically necessary dislocations significantly influence crack extension after overload.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Michael Moschetti, Patrick A. Burr, Edward Obbard, Jamie J. Kruzic, Peter Hosemann, Bernd Gludovatz
Summary: The demanding operating environments of advanced nuclear reactors require the development of new nuclear materials. High-entropy alloys (HEAs) have shown impressive mechanical, thermomechanical, and corrosion-resistant properties. Research has shown that HEAs may exhibit unique irradiation tolerance. This work assesses the challenges faced by nuclear materials and identifies the potential advantages of HEAs in specific applications.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Review
Engineering, Biomedical
Jamie J. Kruzic, Mark Hoffman, Joseph A. Arsecularatne
Summary: Human tooth enamel needs to withstand contact forces, wear, and corrosion in the oral environment. This review provides an overview of the fatigue and wear mechanisms of enamel and their relationship to tooth damage. Additionally, it highlights the importance of understanding these processes for improving the longevity of natural teeth and calls for further research in this area.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Carina B. Tanaka, Haoyu Teng, Bosong Li, Bernd Gludovatz, Ding-Bang Xiong, Jamie J. Kruzic
Summary: The fracture toughness of nanolaminated graphene/aluminum composites was investigated, which exhibited a tensile strength exceeding 300 MPa. The results showed fracture toughness values exceeding 20 MPa root m, with negligible anisotropy for two cracking orientations. This approach of bioinspired nanolaminated metal matrix composites overcomes the trade-off between strength and toughness in pure aluminum by promoting crack blunting, deflection, and bifurcation.
Article
Pharmacology & Pharmacy
Diana Pereira Lopes, Selma Regina Muniz Freitas, Carina Baptiston Tanaka, Giovanne Delechiave, Lucia Nobuco Takamori Kikuchi, Roberto R. Braga, Jamie J. Kruzic, Maria Stella Moreira, Leticia Cristina Cidreira Boaro, Luiz Henrique Catalani, Flavia Goncalves
Summary: The study aimed to analyze how different process parameters control the size and properties of submicrometer chitosan particles loaded with DCPA. Solutions of 10 mg/mL chitosan and 2.5 mg/mL DCPA in a 90% acetic acid were electrosprayed under three distinct flow rate conditions: 0.2, 0.5, and 1.0 mL/h. The particles were characterized in terms of morphology, inorganic content, zeta potential, and minimum inhibitory concentration (MIC) against S. mutans. The results showed that a flow rate of 0.5 mL/h presented the best compromise solution in terms of morphology, zeta potential, MIC, and inorganic content.
Correction
Engineering, Biomedical
Yuwan Huang, Pavithra B. Jayathilaka, Md Shariful Islam, Carina B. Tanaka, Meredith N. Silberstein, Kristopher A. Kilian, Jamie J. Kruzic
ACTA BIOMATERIALIA
(2023)
Article
Chemistry, Multidisciplinary
Xinyue Zhang, Yiyuan Yang, Yujing Liu, Zhe Jia, Qianqian Wang, Ligang Sun, Lai-Chang Zhang, Jamie J. Kruzic, Jian Lu, Baolong Shen
Summary: A novel defect engineering strategy has been proposed to construct a nanoporous high-entropy metallic glass with a nanocrystalline surface structure, which exhibits excellent electrocatalytic performance using only 3% of platinum. The defect-rich metallic glass achieves ultralow overpotentials and long-term durability under alkaline conditions, and significantly reduced energy barriers for water electrolysis.
ADVANCED MATERIALS
(2023)
Article
Construction & Building Technology
Y. A. Moe, M. T. Hasib, M. J. Paul, M. Amraei, A. Ahola, J. Kruzic, A. Heidarpour, X. L. Zhao
Summary: This study experimentally investigates the fatigue crack growth rates of three different grades of ultra-high strength steels (S700, S960 and S1100) in welded components. The fatigue material constants for different regions of the welded components are determined, and comparisons are made with literature results. It is found that the S700 base material has the lowest fatigue crack propagation resistance, and laser welding outperforms gas metal arc welding in terms of fatigue crack growth resistance.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Hongwei Liu, Keita Nomoto, Anna V. Ceguerra, Jamie J. Kruzic, Julie Cairney, Simon P. Ringer
Summary: This study develops a new software tool for calculating Pair distribution function (PDF) from electron diffraction patterns (EDPs). The software tool features accurate background subtraction and automatic conversion of different diffraction intensity profiles into a PDF. The study also evaluates the effects of background subtraction and elliptical distortion on PDF profiles. The EDP2PDF software provides a reliable tool for analyzing the atomic structure of both crystalline and non-crystalline materials.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2023)
Article
Materials Science, Multidisciplinary
Michael Moschetti, Alan Xu, Anton Hohenwarter, Tao Wei, Joel Davis, Ken Short, Gordon J. Thorogood, Charlie Kong, Jean-Philippe Couzinie, Dhriti Bhattacharyya, Jamie J. Kruzic, Bernd Gludovatz
Summary: This study characterizes the impact of phase transformations on the room-temperature irradiation tolerance of a nanocrystalline TiZrNbHfTa RHEA. Results show that the alloy demonstrates exceptional irradiation tolerance after 500°C treatments for 1-100 h, with minimal irradiation-induced hardening. However, 800°C treatment for 1 h negatively impacts the mechanical performance, causing significant irradiation-induced hardening and embrittlement.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
Manish Jain, Amit Sharma, Krzysztof Pajor, Krzysztof Wieczerzak, Nicolo M. della Ventura, Xavier Maeder, Jamie J. Kruzic, Bernd Gludovatz, Johann Michler
Summary: Metallic glasses can have various atomic arrangements determined by processing history, influencing their mechanical properties. Recent studies have shown that physically stable thin film metallic glasses can have high strength and plasticity, although they may differ from bulk metallic glasses. This study utilized two different fabrication methods to create compositionally similar Zr-based glasses in thin film and bulk form, and characterized their oxygen concentration, composition, and structure. The mechanical response of both types of glasses was examined and found that the thin film metallic glass exhibited higher strength without sacrificing plasticity, with the deformation mechanism changing at elevated temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zhuohan Cao, Qian Liu, Qianchu Liu, Xiaobo Yu, Jamie J. Kruzic, Xiaopeng Li
Summary: This study develops a machine learning-based approach using image data to predict and reconstruct the microstructural features of LPBF fabricated Ti-6Al-4V alloy. The results show that the proposed method can accurately predict the microstructural features under different process parameters, offering potential applications in process optimization and material design in additive manufacturing.
NPJ COMPUTATIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Xinyue Zhang, Yiyuan Yang, Yujing Liu, Zhe Jia, Qianqian Wang, Ligang Sun, Lai-Chang Zhang, Jamie J. Kruzic, Jian Lu, Baolong Shen
Summary: The paper presents a novel defect engineering strategy to construct a nanoporous high-entropy metallic glass with a nanocrystalline surface structure, which achieves excellent electrocatalytic performance using only 3 at% of Pt. The defect-rich material shows ultralow overpotentials and long-term durability under alkaline conditions, as well as low energy consumption under acidic and neutral conditions.
ADVANCED MATERIALS
(2023)
Correction
Materials Science, Multidisciplinary
Michael Moschetti, Patrick A. Burr, Edward Obbard, Jamie J. Kruzic, Peter Hosemann, Bernd Gludovatz
JOURNAL OF NUCLEAR MATERIALS
(2024)
Article
Mechanics
Xiaolong Liu, Kelian Luo, Pengcheng Gao, Tao Cong, Xi Wang, Wenjing Wang
Summary: This paper investigates the formation mechanisms of the zig-zag crack region on the shattered rim of railway wheels. The zig-zag crack region, identified as a typical region for crack propagation in rolling contact fatigue behavior, was observed using scanning electron microscopy and transmission electron microscopy. The formation of the zig-zag morphology is attributed to the periodic deflection of the propagation path relative to the initial propagation plane, caused by the limited plastic deformation zone at the crack tip. Grain refinement and secondary cracks in the zig-zag crack region are a result of the large compressive and shear stresses induced by rolling contact loading.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Anastasia Iziumova, Aleksei Vshivkov, Ivan Panteleev, Virginia Mubassarova, Oleg Plekhov, Denis Davydov
Summary: The aim of this study was to investigate the correlation between structural, acoustic emission, and thermal characteristics of fatigue crack growth in titanium alloys. Cluster analysis of the acoustic emission signals revealed two different types of signals observed during the fatigue crack development. It was experimentally demonstrated that the stored energy tends to reach an asymptotic value at the final stage of fatigue crack growth and this is correlated with the twinning process intensification in titanium alloy Ti Grade 2. A correlation was assumed between the stages of change in heat flux, the cumulative energy of the first cluster of acoustic emission signals, and the crack length.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
M. Vieira de Carvalho, I. A. Rodrigues Lopes, F. M. Andrade Pires
Summary: This study investigates the numerical challenges of fracture mechanics models within implicit quasi-static frameworks and proposes an instability criterion. The ratio of cohesive to internal power is identified as a crucial factor. Two strategies for handling fracture problems with instabilities are discussed and a comparative assessment is performed. The study also examines more complex material responses, including transformation-induced plasticity effects.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Thomas Duminy, Aurelien Doitrand, Sylvain Meille
Summary: This study conducted in situ wedge splitting tests on millimeter-size PMMA samples and proposed a method to determine the material tensile strength and critical energy release rate using digital image correlation and a full finite element implementation of the coupled criterion.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Xin Chang, Xingyi Wang, Chunhe Yang, Yintong Guo, Yanghui Wan
Summary: The influence of cyclic thermal shock and high-temperature acid etching on the Mode I fracture of shale was investigated in this study. It was found that cyclic thermal shock severely degrades the strength and fracture toughness of shale, while high-temperature acid etching treatment improves the fracture toughness. These findings are valuable for optimizing process parameters to reduce initiation pressure in deep shale formations.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Liaojun Yao, Mingyue Chuai, Zhangming Lyu, Xiangming Chen, Licheng Guo, R. C. Alderliesten
Summary: Methods based on fracture mechanics have been widely used in fatigue delamination growth (FDG) characterization of composite laminates. This study proposes appropriate similitude parameters to represent FDG behavior with different R-ratios.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Zesheng Zang, Zhonghui Li, Yue Niu, Shan Yin
Summary: This study conducted experiments and recorded signals to investigate the fracture behavior and damage evolution characteristics of coal samples. The results showed that as loading proceeds, the stress, electric potential (EP), and acoustic emission (AE) values increase, and EP and AE signals are excited when stress drops. The fracture behavior of coal samples is altered by flaw inclination, and the destruction mode becomes increasingly complicated. The damage evolution characteristics of coal samples can be evaluated and analyzed by defining the coefficient of variation (CV value) of EP and the b value of AE.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Clotilde Berdin, Nathalie Prud'homme
Summary: In this study, zirconia layers with different fractions of tetragonal phase and thicknesses were tested for multi-cracking behavior. Cracks perpendicular to the tensile direction were observed, showing a blunting effect into the substrate. The ratio of crack spacing at saturation to layer thickness decreased as the layer thickness increased. Unit cell modeling was used to establish a relationship between crack spacing and layer strength, which fell within the bounds of Hu and Evans model and was found to be insensitive to the tetragonal zirconia fraction.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Huadong Zhang, Weichen Kong, Y. H. Liu, Yuh J. Chao
Summary: Williams' series expansion crack tip solution in linear elasticity is modified to include a uniform crack face pressure. Practical methods to calculate T-stress from near crack tip stresses are outlined. The analytical results are consistent with numerical results.
ENGINEERING FRACTURE MECHANICS
(2024)
Article
Mechanics
Jiahao Kong, Haoyue Han, Tao Wang, Guangyan Huang, Zhuo Zhuang
Summary: This paper introduces a phase-field model for polymer foam materials by combining the phase-field method with the crushable foam model. The model is calibrated using experimental data and successfully simulates the fracture processes of polyurethane under different loading conditions. The study is important for the engineering applications of polymer foam materials.
ENGINEERING FRACTURE MECHANICS
(2024)