Article
Materials Science, Multidisciplinary
Yecheng Wang, Tenghao Yin, Zhigang Suo
Summary: Lap shear and peel tests are commonly used for measuring toughness of soft materials. Experimental results show that the toughness values determined by both methods are comparable, but toughness determined by lap shear tends to have more scattering than peel. This is possibly due to the statistical variation of cuts made by scissors. Further experiments confirm that pre-peeling the specimen and using spacers of different thicknesses can reduce the scattering of toughness values in lap shear and peel tests.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2021)
Article
Polymer Science
Wanru Wang, Zhen Wang, Rui Guo, Guijun Xian
Summary: A new steel surface treatment method using suspensions of nano-sized and micro-sized Al2O3 particles was developed and proved to effectively enhance the bonding strength of steel-epoxy adhesives.
Article
Engineering, Environmental
Dingkun Wang, Fusheng Yang, Lulu Cong, Wanglong Feng, Chunpeng Wang, Fuxiang Chu, Jingya Nan, Riqing Chen
Summary: This study reports a hydrogel matrix by integrating Ag-Lignin nanoparticles into a polyacrylamide network to enhance the interfacial adhesion and mechanical toughness of flexible supercapacitors. The all-hydrogel supercapacitor based on this matrix shows robust interfaces, high specific capacitance, outstanding rate performance, and excellent capacitance retention.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Characterization & Testing
Ying Chen, Jie Li, Jiawei Lu, Meng Ding, Yi Chen
Summary: PVA hydrogels with high strength and toughness can be fabricated through dual physical and chemical cross-linking. The best mechanical properties are achieved by reacting at room temperature and subsequently undergoing freeze-thaw and annealing treatment. Additionally, the mechanical properties of PVA hydrogel increase and then decrease with the increase of molecular weight or mass fraction. By changing the reaction solvent, the mechanical properties of PVA hydrogel can be effectively adjusted.
Article
Materials Science, Coatings & Films
Devi Lal, Sanjay Sampath
Summary: A modified three-point bending technique was proposed to measure the interfacial toughness of thick plasma sprayed ceramic coatings. The test involved creating a pre-crack and measuring crack propagation along the interface using a pop-in load. Finite element analysis was used to calculate the interfacial toughness. The results were compared with the tensile adhesion test, and a correlation was proposed between the two methods.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Anran Wei, Han Ye, Fenglin Guo
Summary: In this study, a theoretical model is developed to describe the mechanical properties of self-folded two-dimensional nanomaterials (SF-2DNMs), and the load transfer behaviors and failure modes are demonstrated. The findings provide guidance for the structure design and property optimization of SF-2DNMs.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Alessandro Brito Thomaz, Carlos Nelson Elias, Heraldo Elias Salomao dos Santos, Celso Renato de Souza Resende, Claudinei dos Santos
Summary: This study proposes an innovative method of zirconia surface painting using epoxy powder paint with antibacterial and antifungal properties to improve the adhesion to dentin. The results showed that the painted zirconia had higher bonding strength compared to untreated or acid etched surfaces. The methodology of zirconia painting with epoxy powder paint facilitates the manufacturing of dental prostheses and increases the shear bonding strength to dentin.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Biotechnology & Applied Microbiology
Xiaochun Liu, Si Qin, Lei Xu, Guo Fu, Yongjun Huang, Chaoqun Yu, Guoyun Cheng, Ying Li, Yunzhi He, Yong Qi, Dawei Sun
Summary: In this study, a tough adhesive hydrogel with good mechanical stability for non-invasive wound repair was developed. The hydrogel is composed of polyethylene glycol dimethacrylate (PEGDA), chitosan (CS), and chitin nano-whisker (CW). PEGDA and CS form interpenetrating network hydrogel through free radical polymerization reaction under UV light. The introduction of CW enhances the toughness of the hydrogel. The adhesive hydrogel shows promising potential for wound closure repair.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Yuehui Yuan, Hao Wu, Xueyang Ren, Jianwu Wang, Ruiqing Liu, Benhui Hu, Ning Gu
Summary: Researchers have proposed an ionic nano-reservoir (INR)-based dual-network hydrogel for the treatment of gastric perforation, which has excellent adhesion and mechanical properties, and can promote tissue repair while blocking the perforation.
SCIENCE CHINA-MATERIALS
(2022)
Article
Engineering, Mechanical
Shachar Keren, Tamar Segal-Peretz, Noy Cohen
Summary: This work aims to study the adhesion of soft adhesives to perforated substrates, and the experiments show that the shear response can be divided into two main regions. The perforations yield a highly heterogeneous stress state that enables one to increase adhesion strength and enhance the performance of lap shears in a variety of applications.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Materials Science, Multidisciplinary
Mikko Hietala, Mohammed Ali, Ali Khosravifard, Markku Keskitalo, Antti Jarvenpaa, Atef Hamada
Summary: The tensile-shear strength of laser-welded lap joints in abrasion resistance ultra-high strength ARS-600 steel was optimized through evaluation of joints achieved with different welding parameters and configurations. The microstructural evolution of the fusion zone was characterized using electron backscatter diffraction (EBSD), and stress analysis of different weld patterns was conducted using finite element method (FEM).
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Paper & Wood
William Leggate, Robert L. McGavin, Andrew Outhwaite, Chandan Kumar, Adam Faircloth, Mark Knackstedt
Summary: This study found that surface machining methods significantly affect the tensile shear strength of adhesive bonds in Southern pine and spotted gum, with face milling combined with sanding treatments showing the highest performance. The differences in tensile shear strength are likely related to the effects of these machining methods on surface roughness, fibrillation, and sub-surface cell damage.
Article
Engineering, Manufacturing
Junwei Lv, Yushang Liu, Yitian Qin, Qian Yin, Siyao Chen, Zheng Cheng, Junyi Yin, Yu Dai, Yang Liu, Xiangyang Liu
Summary: By constructing a hierarchically structured interphase and enhancing the interfacial shear strength and toughness through the in-situ grafting and foaming of polyurea on fiber surface and penetrating epoxy resin into the pores of aramid composites, significant improvements were achieved. The newly formed covalent bonded interfaces between fiber-polyurea and polyurea-epoxy resin greatly enhanced the interfacial shear strength by 115.9% and the interfacial shear toughness (GIC) by 493.2%, demonstrating the effectiveness of the strengthening and toughening mechanisms.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Construction & Building Technology
Haifeng Yang, Xiancheng Lu, Machi Gong, Peng Yang
Summary: Rubber powder produced from waste tires can improve the impact and shear toughness of concrete, as well as reduce environmental pollution. However, there is a lack of research on the mechanical behaviors and failure criteria of steel fiber reinforced rubber concrete (SFRRC) under combined compression-shear loading. This study investigated the effects of steel fiber and rubber powder content, and compressive stress ratio on the compression-shear properties of SFRRC. The results showed that SFRRC exhibited ductile failure under higher compressive stress ratios and the addition of steel fiber increased shear strength and peak displacement.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Chemical
Suryamani Behera, Deepti Ranjan Mohapatra, Subhajit Mondal, Pradip Sarkar
Summary: This study investigates the effect of incorporating different percentages of multi-walled carbon nanotubes (MWCNTs) in the adhesive on the bond shear strength of glass fibre-reinforced plastic (GFRP) splices. Results show that an optimum amount of MWCNTs can increase bond shear strength by approximately 30%. Statistical analysis using Kolmogorov-Smirnov (K-S), Anderson-Darling (A-D), and Chi-Square (C-S) goodness-of-fit tests reveals the variability in bond shear strength and suggests appropriate statistical distributions for modeling it. This knowledge is important for reliability-based structural analysis of FRP composite structures.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Mechanics
Zhe Chen, Tonghao Wu, Guodong Nian, Yejie Shan, Xueya Liang, Hanqing Jiang, Shaoxing Qu
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
(2019)
Article
Materials Science, Ceramics
J. Liu, G. D. Nian, Q. P. Cao, S. X. Qu, X. D. Wang, D. X. Zhang, J. Z. Jiang
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2019)
Article
Nanoscience & Nanotechnology
Zilong Han, Peng Wang, Guoyong Mao, Tenghao Yin, Danming Zhong, Burebi Yiming, Xiaocheng Hu, Zheng Jia, Guodong Nian, Shaoxing Qu, Wei Yang
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Materials Science, Multidisciplinary
Tonghao Wu, Tenghao Yin, Xiaocheng Hu, Guodong Nian, Shaoxing Qu, Wei Yang
ADVANCED OPTICAL MATERIALS
(2020)
Article
Materials Science, Multidisciplinary
Yimou Fu, Haotian Lu, Guodong Nian, Peng Wang, Nan Lin, Xiaocheng Hu, Haofei Zhou, Honghui Yu, Shaoxing Qu, Wei Yang
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2020)
Article
Chemistry, Multidisciplinary
Canhui Yang, Sibo Cheng, Xi Yao, Guodong Nian, Qihan Liu, Zhigang Suo
ADVANCED MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Donghao Zhao, Yide Liu, Binhong Liu, Zhe Chen, Guodong Nian, Shaoxing Qu, Wei Yang
Summary: A new strategy for formulating hydrogel inks has been proposed to enable printing of strong and tough particle-based double-network hydrogels of arbitrary shapes without the need for any rheological modifiers. The hydrogel inks consist of microgels and a hydrogel precursor, which regulate the rheological properties of the ink and enable direct printing. This approach allows for the 3D printing of multifunctional hydrogel structures with high mechanical performance and strong adhesion to diverse materials, opening up new possibilities for applications in tissue engineering and soft robotics.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Yecheng Wang, Guodong Nian, Xuxu Yang, Zhigang Suo
Summary: This paper investigates the elastic properties of adhesives and adherends in lap shear, examining the impact of the shear lag length on the energy release rate. The study reveals the significance of the ratio of remaining joint length to shear lag length in determining the deformations and energy release rates in short and long-joint limits. The shear lag model provides a reliable estimate of energy release rates for different values of the length ratio.
MECHANICS OF MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Binhong Liu, Heng Zhu, Donghao Zhao, Guodong Nian, Shaoxing Qu, Wei Yang
Summary: This study demonstrates that a thin layer of hydrogel coating can simultaneously improve the mechanical, optical, and functional performance of optical fibers. By acting as a "skin", the hydrogel coating provides surface softness and low friction, while maintaining bulk properties of the optical fiber. With high transparency and low refractive index, the hydrogel coating helps form a step-index profile for efficient light transmission, enabling versatile functionalities such as fluorescence generation, photothermal effect, pH sensing, and drug delivery.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Engineering, Mechanical
Guogao Zhang, Tenghao Yin, Guodong Nian, Zhigang Suo
Summary: This study introduces a fatigue-resistant PU fiber-matrix composite, utilizing Spandex fibers and PU elastomer matrix to enhance toughness and fatigue threshold. The pullout test demonstrates high adhesion toughness, with the composite showing advantages in stress deconcentration solutions.
EXTREME MECHANICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Guodong Nian, Junsoo Kim, Xianyang Bao, Zhigang Suo
Summary: In this study, a novel method was developed to create hydrogels that are both swell-resistant and tough by densely entangling polymer chains at elevated temperatures and sparsely crosslinking them using UV light. This method is applicable to various synthetic and natural polymers and compatible with industrial processing technologies, opening doors to the development of sustainable and high-performance hydrogels.
ADVANCED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yecheng Wang, Guodong Nian, Junsoo Kim, Zhigang Suo
Summary: Synthesis-property relation is crucial in materials science, but still poorly understood for many materials. In this study, the synthesis-property relation of polyacrylamide hydrogels prepared by free radical polymerization is investigated. The results show that crosslinks decrease the strength of hydrogels, while entanglements do not. Additionally, both crosslinks and entanglements increase the modulus of the hydrogels.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Engineering, Mechanical
Meixuanzi Shi, Junsoo Kim, Guodong Nian, Zhigang Suo
Summary: This paper investigates a polymer network with degradable crosslinks and non-degradable polymer chains. The study reveals that the presence of entanglements significantly enhances the mechanical properties of the polymer network before degradation and slows down the degradation process. The researchers synthesized polyacrylamide hydrogels with disulfide crosslinks and observed that entanglements improve the swell resistance, stiffness, and toughness of the hydrogel. They further demonstrate that entanglements play a role in slowing down the degradation of the hydrogel in an aqueous solution of cysteine. This work highlights the importance of entanglements in expanding the properties of degradable polymers.
EXTREME MECHANICS LETTERS
(2023)
Article
Chemistry, Physical
Xianyang Bao, Guodong Nian, Yakov Kutsovsky, Junsoo Kim, Quan Jiao, Zhigang Suo
Summary: Many polymer networks are prepared by intense mixing processes, resulting in short chains and a low fatigue threshold. However, a low-intensity process combining kneading and annealing can preserve long chains and achieve a higher fatigue threshold. The fraction of dangling strands and the number of crosslinks per chain play a crucial role in determining the fatigue resistance of elastomers.
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)