Article
Nanoscience & Nanotechnology
Shan Wang, Qiushi Wang, Xiaotong Zhang, Tianwei Liu, Zhongxue Cui, Meiyu Chen, Xingyu Fan, Runjun Sun
Summary: This study developed a composite material with anti-freezing and flexible puncture-resistance properties by compounding a NaCl-soaked poly(vinyl alcohol) (PVA)/sodium alginate (SA)/glycerol (Gly) hydrogel (PSGN hydrogel) with Kevlar fabric. The Kevlar/PSGN composite exhibited excellent puncture-resistance properties and strain-sensing ability at both 25℃ and -30℃. Furthermore, it demonstrated the potential to respond to multiple body motions, making it a promising candidate for intelligent soft body armor.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Mechanical
K. Mishra, L. Brassart, A. Singh
Summary: The fracture behavior of highly cross-linked epoxy resin under different crack tip strain rates was studied. The plane strain fracture toughness initially decreases with increasing strain rate and stabilizes after reaching a certain strain rate. A fracture process zone forms ahead of the sharp pre-crack in all specimens, and the micro mechanism of fracture is governed by crazes. In-situ testing in a scanning electron microscope confirmed the existence of crazes. The size of the craze openings varies with strain rate, with larger openings at lower strain rates and smaller openings at higher strain rates.
ENGINEERING FAILURE ANALYSIS
(2022)
Article
Engineering, Multidisciplinary
Yu Zheng, Xin Li, Ping Liu, Ying Chen, Ce Guo
Summary: Fish skin, especially the sturgeon fish skin, has high flexibility and can provide good mechanical protection. It serves as a potential biomimetic design model for flexible and protective systems. The bending stiffness of the fish body decreases gradually from the anterior to the posterior region, indicating higher flexibility near the tail. Bony plates have an inhibitory effect on the bending deformation, especially in the posterior region. Moreover, the sturgeon fish skin significantly affects the flexural stiffness and promotes effective swimming motion.
Article
Materials Science, Ceramics
Victoria Vilchez, Pedro I. B. G. B. Pelissari, Victor C. Pandolfelli, Florian Bouville
Summary: With the progress of ceramic engineering, tough technical ceramics exhibit complex fracture patterns. The crack geometries and mechanisms responsible for crack propagation are difficult to understand. A robust local solution is reported to accurately estimate the effective stress intensity factors at the tips of multiple deflected cracks. The method highlights the role of findings in the understanding of mechanical response and future optimization of tough ceramics.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Qiushi Wang, Shan Wang, Meiyu Chen, Liang Wei, Jie Dong, Runjun Sun
Summary: The study demonstrated the preparation of a cold-adapted hydrogel using specific materials, laminated with aramid fabric to create a flexible composite with excellent cold adaptation and anti-puncture properties at low temperatures.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Engineering, Mechanical
Tiaoqi Fu, Ming Zhang, Qichen Zheng, Di Zhou, Xiaowang Sun, Xianhui Wang
Summary: By studying the dynamic response of strain-rate sensitive armor steel under air blast loading, a suitable scaling base mode was successfully established, and the scaling of the response of the armor steel plate was achieved through correction of specific impulse and total impulse. The results showed good agreement between predictions and experimental data.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2021)
Article
Materials Science, Characterization & Testing
Junyi Zhou, Antonio Pellegrino, Vito L. Tagarielli
Summary: We propose and evaluate a new experimental technique to measure the fracture toughness of engineering materials and its sensitivity to strain rate. The method, based on a ring expansion technique, overcomes the limitations of current dynamic fracture tests and results in spatially uniform stress and strain fields prior to fracture. Experiments show an increase in material toughness with increasing strain rate.
Article
Engineering, Biomedical
Saurabh Das, Florent Hannard, Francois Barthelat
Summary: Researchers conducted micromechanical tests on individual rays from Rainbow trout to study the mechanical behavior of rays under large deformations, resulting in a mechanical model that captures the behavior and providing new insights into the design of efficient bioinspired stiff morphing materials and structures at large deformations.
ACTA BIOMATERIALIA
(2023)
Article
Engineering, Mechanical
Donghwan Noh, Piemaan Fazily, Kwanghyun Yu, Sungbo Lee, Dong Kyun Ko, Min Je Sung, Hoon Huh, Jeong Whan Yoon
Summary: This paper presents experimental and numerical studies on the fragmentation of tungsten alloy under impact loading. Compression tests and Taylor impact tests are conducted to investigate the dynamic hardening behavior and evaluate the fragmentation. Finite element analysis is performed to predict the dynamic behaviors using Lim-Huh hardening model and Mohr-Coulomb fracture model, and the results show good agreement with the experimental data.
INTERNATIONAL JOURNAL OF IMPACT ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Prakash Karipoth, Abhilash Pullanchiyodan, Adamos Christou, Ravinder Dahiya
Summary: This paper presents a custom-made graphite-based piezoresistive strain sensor with gecko foot-inspired macroscopic features realized using Velcro tape on Ecoflex substrate. The sensor shows improved performance even at low strain values and has a high gauge factor (>100) for very low strain values. The piezoresistive behavior of strain sensors is influenced by factors such as the supporting elastic medium, architecture of the strain sensor, material properties, strain rate, and deformation sequence.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Civil
Zhihang Wang, Erlei Bai, Xin Luo, Yan Lv
Summary: In this study, 7 kinds of nano-concrete were prepared using inorganic nanoparticles and metal oxide nanoparticles. The impact toughness of the nano-concrete was studied using two evaluation indicators, and it was found that nanoparticles have a certain toughening effect on concrete. Among the different types of nanoparticles modified concrete, co-doping inorganic nanoparticles showed the best toughening effect.
Article
Chemistry, Multidisciplinary
Yongsong Luo, Xiaoliang Chen, Xiangming Li, Hongmiao Tian, Sheng Li, Liang Wang, Juan He, Zhengbing Yang, Jinyou Shao
Summary: Inspired by the gating characteristics of ion channels, a programmable fluidic strain sensor is proposed in this paper, which enhances the gating of ion pathways through the heterogeneous strain distribution of discrete micropillars. The sensor achieves ultra-high sensitivity and a wide range of stretching by adjusting the structure of the discrete micropillars. It also overcomes the sensing stability issue of flexible sensors. The sensor can be used to detect human motion and achieve human-machine interaction.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Patrick Feldner, Benoit Merle, Mathias Goeken
Summary: The study analyzed the deformation behavior of ultrafine-grained, heterogeneous superplastic alloy at small scales and found new characteristics of strain rate sensitivity, emphasizing the importance of controlling grain boundary sliding by dislocation creep.
MATERIALS RESEARCH LETTERS
(2021)
Article
Materials Science, Characterization & Testing
Jian Cui, Yanchao Shi, Xihong Zhang, Weibo Huang, Mingliang Ma
Summary: Polyurea is a strain rate sensitive material, with its mechanical properties significantly affected by the loading rates. Under tensile and puncture loads, the yield force and strength of polyurea increase with loading rates, while the fracture strain decreases. The strain rate effect on the polyurea's failure deformation is only observed when the loading rate is less than 2 m/s.
Article
Crystallography
Ishaq I. Alahmed, Sameh M. Altanany, Ismail Abdulazeez, Hassan Shoaib, Abduljabar Q. Alsayoud, Adel Abbout, Qing Peng
Summary: Graphene is a type of 2D material with unique properties and promising applications. In this study, the mechanical properties of triangular-cracked single-layer graphene were investigated through molecular dynamics simulations. The crack angle was found to have a significant impact on the mechanical properties, while variations in crack shape, size, and system size had minor effects. The elastic characteristics, including fracture toughness, were remarkably influenced by variations in strain rate.
Article
Dentistry, Oral Surgery & Medicine
Weishi Yan, Carolina Montoya, Marit Oilo, Alex Ossa, Avina Paranjpe, Hai Zhang, Dwayne D. Arola
JOURNAL OF ENDODONTICS
(2019)
Article
Engineering, Multidisciplinary
Juliana Gomez Tamayo, Astrid Oasis Rueda Arango, Edgar Alexander Ossa Henao
REVISTA FACULTAD DE INGENIERIA-UNIVERSIDAD DE ANTIOQUIA
(2020)
Article
Engineering, Biomedical
H. Jiang, S. Ghods, E. Weller, S. Waddell, E. A. Ossa, F. Yang, D. Arola
ACTA BIOMATERIALIA
(2020)
Article
Dentistry, Oral Surgery & Medicine
Santiago Arango-Santander, Carolina Montoya, Alejandro Pelaez-Vargas, E. Alexander Ossa
ARCHIVES OF ORAL BIOLOGY
(2020)
Article
Materials Science, Multidisciplinary
S. Gil-Duran, D. Arola, E. A. Ossa
Article
Materials Science, Multidisciplinary
Susana Estrada, Alex Ossa
ADVANCED ENGINEERING MATERIALS
(2020)
Article
Engineering, Multidisciplinary
Susana Estrada, Juan Camilo Munera, Javier Hernandez, Mauricio Arroyave, Dwayne Arola, Alex Ossa
BIOINSPIRATION & BIOMIMETICS
(2020)
Article
Materials Science, Multidisciplinary
Juan Camilo Munera, Debkalpa Goswami, Ramses Martinez, E. Alex Ossa
MECHANICS OF MATERIALS
(2020)
Article
Engineering, Biomedical
C. Renteria, J. M. Fernandez-Arteaga, J. Grimm, E. A. Ossa, D. Arola
Summary: The study investigated the impact of bite force quotient (BFQ) on the chemical, microstructural, and mechanical properties of enamel in teeth from six mammalian species. Results showed significant differences in the chemical composition and specific properties of enamel between the Low and High BFQ groups, potentially reflective of bite force requirements related to diet and predation. These findings emphasize the importance of considering the diversity of tooth enamel across species in the development of nature-inspired structural materials.
ACTA BIOMATERIALIA
(2021)
Article
Dentistry, Oral Surgery & Medicine
Catalina Serna-Meneses, Gabriel Ocampo-Parra, Santiago Arango-Santander, Claudia Garcia-Garcia, Luis Felipe Restrepo-Tamayo, Johnatan Cardona-Jimenez, Alexander Ossa, Alejandro Pelaez-Vargas
Summary: This study evaluated the optical properties of a feldspathic dental ceramic using two different ceramic paste preparation methods. The results showed that the incremental mixing method resulted in dental ceramics with lower translucency and higher roughness.
INTERNATIONAL JOURNAL OF DENTISTRY
(2022)
Article
Engineering, Biomedical
Heonjune Ryou, Franklin R. Tay, Alex Ossa, Dwayne Arola
Summary: This study presents a new experimental methodology for preparing samples of dentinal collagen fibrils and evaluating their mechanical behavior using atomic force microscopy. Dynamic mechanical analysis was performed to study the viscoelastic behavior of the fibrils, and measures of energy dissipation, phase angle, and loss modulus were used to characterize their capacity for viscous dampening. The peak regions of the fibrils showed significantly greater stiffness and dampening capacity than the trough regions, as indicated by the phase angle and loss modulus. This new approach will contribute to understanding the role of collagen fibrils in the mechanical behavior of dentin and other mineralized tissues, as well as the potential effects from changes in fibril confirmation due to tissue treatments, aging, or chronic diseases.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Multidisciplinary Sciences
Claudia Garcia, Yeison Orozco, Alejandra Betancur, Ana Isabel Moreno, Katherine Fuentes, Alex Lopera, Oscar Suarez, Tatiana Lobo, Alexander Ossa, Alejandro Pelaez-Vargas, Carlos Paucar
Summary: The increasing prevalence of bone diseases and defects necessitates the development of bone substitutes for restoration. Organic and inorganic scaffolds with antibacterial properties can offer advantages for bone regeneration. In this study, scaffolds made of polycaprolactone (PCL) charged with calcium phosphates nanoparticles and infused with extracts of Colombian plants were investigated for potential use in bone regeneration. The composites were successfully printed into scaffolds with Triply Periodic Minimal Surface (TPMS) geometry, which facilitates cellular growth due to its interconnected porosity. Scaffolds impregnated with extracts of Justicia cf colorifera and Billia rosea exhibited antibacterial properties, indicating their potential for bone defect repair.
Article
Engineering, Biomedical
Carolina Montoya, Julia Kurylec, Alex Ossa, Santiago Orrego
Summary: This study investigated the effect of cyclic strain on the virulence of Candida albicans. The results showed that surfaces subjected to cyclic strain had significantly higher biofilm biomass and metabolic activity. Genes and transcription factors associated with adhesion, biofilm formation, secretion of extracellular matrix, virulence, and secretion of extracellular enzymes were significantly upregulated on cyclically strained surfaces compared to static surfaces. This study reveals a biomaterial surface factor triggering the pathogenesis of Candida albicans, which is important for understanding and preventing oral infections.
ACTA BIOMATERIALIA
(2023)
Article
Materials Science, Multidisciplinary
Carolina Duque, Carlos Andres Gomez-Tirado, Sebastian Ocampo, Liliana Maria Arroyave-Munoz, Luz Marina Restrepo-Munera, Andres Felipe Vasquez, Alex Ossa, Claudia Garcia
Summary: In this study, scaffolds with gyroid TPMS geometry were synthesized from an acrylic resin loaded with calcium phosphate nanoparticles. Surface treatment of the scaffolds using oxygen plasma improved the wettability and cell adhesion. In vitro bioactivity tests showed that the composite material exhibited bioactive behavior and supported cell proliferation.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Polymer Science
Ana Isabel Moreno, Yeison Orozco, Sebastian Ocampo, Sarita Malagon, Alex Ossa, Alejandro Pelaez-Vargas, Carlos Paucar, Alex Lopera, Claudia Garcia
Summary: This study developed a scaffold composed of polylactic acid and wollastonite particles enriched with propolis extracts for bone tissue repair and regeneration. The scaffold exhibited antibacterial activity against pathogens causing osteomyelitis and showed good physical, mechanical, and thermal properties. It also had high cell viability and strong bactericidal properties.
Article
Engineering, Biomedical
Xinyao Zhu, Yifan Liu, Jing Ye, Wei Xu, Xuexia Zhao, Tianyan Liu
Summary: This study reveals the adverse effect of acid on dentin in terms of degradation of its fracture toughness. The peritubular dentin plays a significant role in enhancing the dentin's fracture resistance capability. The findings highlight the importance of structural integrity for dentin.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Priya Ranganathan, Vijayakumari Sugumaran, Bargavi Purushothaman, Ajay Rakkesh Rajendran, Balakumar Subramanian
Summary: The study aims to design and fabricate an ultra-easier multi-functional biomedical polymeric scaffold loaded with unique equimolar Ca:P phasic bioactive glass material. The results showed that the G:BG (1:2) ratio is the more appropriate composition for enhanced bio-mineralization and higher surface area. The scaffold can induce mitogenesis in osteoblast cells for hard tissue regeneration and rapid collagen secretion in fibroblast cells for soft tissue regeneration.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Ziad Guerfi, Oum keltoum Kribaa, Hanane Djouama
Summary: Hydroxyapatite, a biocompatible and bioactive ceramic material, has been widely studied in fields such as orthopedics and plastic surgery. The use of computational tools, especially density functional theory, has become increasingly important in research. In this study, Hydroxyapatite was synthesized using the double decomposition method and quantum mechanical computations were performed using density functional theory. The experimental and computational results confirmed the successful synthesis of Hydroxyapatite and showed good agreement in spectroscopic characterizations.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Sally AbdulHussain Kadhum, Nassier A. Nassir
Summary: In this research, porous composites were successfully prepared and reinforced for bone scaffold applications. The functional groups, pore structure, and composition distribution of the materials were characterized using techniques such as FTIR, Atomic Force Microscopy (AFM), and Scanning Electron Microscopy (SEM).
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Veronika Geiger, Felicitas Mayinger, Moritz Hoffmann, Marcel Reymus, Bogna Stawarczyk
Summary: The study investigated the mechanical properties of four additively manufactured denture base resins in different measurement environments, and found that the measurement environment impacts the strength and fracture toughness of the materials.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Junxiao Wang, Amatjan Sawut, Rena Simayi, Huijun Song, Xueying Jiao
Summary: The development of cost-effective and eco-friendly conductive hydrogels with excellent mechanical properties, self-healing capabilities, and non-toxicity is of great significance in the field of biosensors.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Yijun Zhou, Lisa Ho, Ayan Samanta, Philip Procter, Cecilia Persson
Summary: In this study, soft, non-setting biomaterials based on Hyalectin gels and different morphological parameters of hydroxyapatite (HA) particles were evaluated as potential augmentation materials for orthopaedic implant fixation. The results showed that constructs reinforced with irregularly shaped nano-HA particles and spherically shaped micro-HA particles had significantly higher pull-out force compared to the control group.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Mehdi Jahandardoost, Donald Ricci, Abbas S. Milani, Mohsen Jahandardoost, Dana Grecov
Summary: Tubular flow diverters are important for treating cerebral aneurysms. A new design called VR-eCLIPs has been developed to cover the neck of challenging bifurcation aneurysms. A finite element model has been used to simulate the implantation processes of VR-eCLIPs and assess potential plastic deformation.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Marek Traczynski, Adam Patalas, Katarzyna Roslan, Marcin Suszynski, Rafa l Talar
Summary: This article evaluates the forces acting on intravenous needles during insertion into the skin and selects the most suitable model for future research. The experimental results show that needle size, insertion angle, and insertion speed have an influence on the measured force values.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Chester Jar, Andrew Archibald, Monica Gibson, Lindsey Westover
Summary: This study evaluates the ASIST technique for assessing the stability of dental implants. The results show that the ASIST technique can reliably measure the interfacial stiffness of dental implants, which is not significantly influenced by different abutment types. This method may provide an improved non-invasive way to measure the stability of dental implants.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Ali Kamali, Kaveh Laksari
Summary: In this paper, a UNet-based neural network model (El-UNet) is developed to infer the spatial distributions of mechanical parameters. The El-UNet shows superior performance in terms of accuracy and computational cost compared to other neural network models. A self-adaptive spatial loss weighting approach is proposed, which achieves the most accurate reconstructions in equal computation times.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Chunyan Yu, Yanju Lu, Jinhui Pang, Lu Li
Summary: In this study, a safe and effective hemostatic composite sponge was developed by combining chitosan and hydroxypropylmethylcellulose (HPMC). The sponge exhibited excellent flexibility and rapid hemostatic ability in vitro. In vivo assessments showed that the sponge had the shortest clotting time and minimal blood loss.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Zhongliang Yu, Lin Yu, Junjie Liu
Summary: The study proposes incorporating functionally graded tablets into nacreous composites to enhance both stiffness and damping properties. Analytical formulae and numerical experiments demonstrate the effectiveness of this design, surpassing existing homogeneous composites in performance.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Marc Graham, Sandra Klinge
Summary: This study investigates the macroscopic diffusion behavior of heterogeneous gels using a homogenization method in a finite element framework. Two materials, calcifying PDMA and PAAm, were studied, and the results show that the diffusivity of PDMA has a strong nonlinear dependence on the solute molecule radius.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)
Article
Engineering, Biomedical
Abdur-Rasheed Alao
Summary: This study aimed to find the optimal sandblasting parameters for roughening YTZP surfaces. Through experimental and statistical analysis, the best setting was found to be IA = 45 degrees, AP = 110 μm, ST = 20 s, and P = 400 kPa, which resulted in the maximum surface roughness, phase transformation, and shear bond strength.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2024)