Article
Materials Science, Characterization & Testing
Yasuhisa Kodaira, Tatsuma Miura, Yoshinori Takano, Akio Yonezu
Summary: Porous polymer membranes undergo anisotropic elastoplastic deformation and it is important to investigate their deformation behavior under multiaxial loading. A novel biaxial tensile testing machine was developed to evaluate the deformation behavior and understand the mechanisms from their microstructure. Stress-strain curves for each loading axis were obtained to create a yield surface and investigate the deformation behavior under biaxial tensile loading.
Article
Engineering, Biomedical
Jumpei Takada, Kohei Hamada, Xiaodong Zhu, Yusuke Tsuboko, Kiyotaka Iwasaki
Summary: This study aimed to develop a biaxial tensile testing system to measure the mechanical properties of both sides of the tissue and reduce stress concentration. The test system showed that the mechanical response of the aortic tissue was significantly different between the intimal and adventitial side in the high-strain range due to collagen fiber disruption, predominantly in the longitudinal direction. However, in the mid-strain range, there was no difference in the elastic modulus between the intimal and adventitial sides, regardless of fiber disruption, and collagen fibers were elongated.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Polymer Science
Sergio Horta Munoz, Maria del Carmen Serna Moreno
Summary: This article reviews the biaxial testing methodology applied to fibre-reinforced polymers, analyzing various parameters and factors. The most significant results of biaxial tests with cruciform specimens are collected, and proposed modifications in literature are detailed.
Article
Polymer Science
Yiqun Hu, Suhang Ding, Mingxing Pan, Jianfei Xu, Yuhang Zhang, Wenwang Wu, Re Xia
Summary: This study investigates the effects of temperature, peak load, initial strain, and loading modes on the mechanical properties of Nafion (R) 212 PEM. The results show that membrane creeping is positively correlated with temperature and peak loads. The stress relaxation rate increases with initial strain, and an increase in temperature leads to a decrease in the anti-relaxation properties of Nafion (R) 212 membrane. Additionally, the mechanical properties of low-cycle fatigue at various temperatures were explored under biaxial cyclic loading conditions.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Biomedical
Ankush Aggarwal, Luke T. Hudson, Devin W. Laurence, Chung-Hao Lee, Sanjay Pant
Summary: A Bayesian approach was used to calculate the relative probabilities of different constitutive models for porcine aortic valve tissue based on experimental data. The May-Newman model was found to be the most probable model for the overall data, while the Lee-Sacks model and May-Newman model were equally probable for non-coronary cusps. The results demonstrate the ability of a PCA-based statistical model to capture significant variations in the mechanical properties of soft tissues.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Engineering, Biomedical
John S. Kang, Kishev Navindaran, J. Phillips, K. Kenny, Kee S. Moon
Summary: This paper presents a tensile testing technique to directly and accurately measure the mechanical properties of soft tissues. To solve the challenges in tensile testing on soft tissues, a sub-micro scale tensile testing system was designed, which uses a flexure mechanism and a 3D-printed sample holder for gripping the tissue samples, and two high-resolution cameras to measure the cross-section area and strain of the samples. The system was validated through tests on standard materials and lung tissue slices, showing low error and high repeatability.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Engineering, Mechanical
Amit Vikram Rex, Surajit Kumar Paul, Akhilendra Singh
Summary: The low cycle fatigue performance of AA2024-T4 aluminium alloy with different tensile pre-straining histories is investigated. Equi-biaxial tensile pre-strained specimens have the same fatigue life as 0% pre-strained specimens, while all uniaxial tensile pre-strained specimens show improved fatigue life. As-received specimens exhibit noticeable cyclic hardening at all strain amplitudes. Pre-strained specimens have a nearly stable cyclic stress-strain response for each strain amplitude. Electron backscattered diffraction examination reveals large lattice distortion in equi-biaxial tensile pre-strained specimens compared to the other two cases.
INTERNATIONAL JOURNAL OF FATIGUE
(2023)
Article
Chemistry, Multidisciplinary
Bahram Mirani, Sean O. Mathew, Neda Latifi, Michel R. Labrosse, Brian G. Amsden, Craig A. Simmons
Summary: In this study, a novel method combining computational modeling, melt electrowriting (MEW), and design of experiments (DOE) is reported to generate scaffolds with prescribed mechanical properties to mimic the nonlinear and anisotropic behavior of three model tissues. The optimized scaffold architecture is then used to create functional scaffolds with accurate mechanics, which can also be used for tissue engineering applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Wangran Wu, Hongyu Wei, Pengyu Tang, Guangan Yang, Jiaxing Wei, Siyang Liu, Weifeng Sun
Summary: In this letter, the electrical properties of 1200V planner-gate 4H-SiC power metal-oxide-semiconductor field-effect transistors under mechanical strains are investigated. Results show that compressive strains enhance drain current and shift threshold voltage negatively, while tensile strains have the opposite effect. The modulation of band structure in the poly-Si gate due to strain is the main cause for the threshold voltage shift. Biaxial strains only change drain current, while both parallel and perpendicular uniaxial compressive strains enhance drain current. The improvement in drain current is attributed to the increase in electron mobility in the inverted channel caused by the repopulation of electrons into valleys with smaller conduction effective mass.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Chemistry, Physical
W. S. Braga, O. R. Santos, N. M. Kimura, M. Simoes, A. J. Palangana
Summary: By studying the optical signals of lyotropic cholesteric liquid crystalline phases under different conditions, it was found that the optical signal of the biaxial cholesteric phase depends on the phases surrounding it when situated between uniaxial cholesteric phases, and must undergo a change if located between uniaxial phases with opposite optical signals.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Biotechnology & Applied Microbiology
Michael J. Blair, Kyle P. Quinn
Summary: Quantitative Polarized Light Imaging (QPLI) is a technique used to compute the orientation of collagen fibers. In this paper, a single shot QPLI system (ssQPLI) without moving parts is presented, which can accurately quantify the fiber orientation and quickly provide pixel-wise measurements during mechanical testing. The ssQPLI system utilizes four cameras to simultaneously collect linearly polarized light in four states.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Kyleigh Kriener, Raushan Lala, Ryan Anthony Peter Homes, Hayley Finley, Kate Sinclair, Mason Kelley Williams, Mark John Midwinter
Summary: This study characterizes the tensile properties of the human abdominal wall in layers and as a partial composite, revealing variations in tensile properties within and between tissues and suggesting that the tensile properties of composite abdominal walls are not additive.
BIOENGINEERING-BASEL
(2023)
Article
Cardiac & Cardiovascular Systems
David W. Sutherland, Aisling McEleney, Matheus de Almeida, Masaki Kajimoto, Giselle Ventura, Brett C. Isenberg, Michael A. Portman, Scott E. Stapleton, Corin Williams
Summary: This study provides anatomical measurements and mechanical properties of porcine cardiovascular tissues, which are crucial for the development of pediatric heart valve replacements. The researchers also developed a novel method to measure tissue stiffness and validated it against a traditional testing method.
FRONTIERS IN CARDIOVASCULAR MEDICINE
(2022)
Article
Engineering, Civil
Lin Shi, Zhenyu Wu, Xiaoying Cheng, Zhongxiang Pan, Yanhong Yuan
Summary: This paper investigates the impact of transverse low-velocity impacts on tubular composites in automobile engineering, comparing the effects of different stacking sequences and weaving structures on impact response. The results show that hybrid tubes exhibit better impact resistance at higher impact energies.
ENGINEERING STRUCTURES
(2021)
Article
Materials Science, Multidisciplinary
Z. Wang, D. Guines, X. Chu, L. Leotoing
Summary: This study constructs the forming limit curve (FLC) of AA6061-T4 sheets using in-plane biaxial tensile tests with two distinct cruciform specimens, covering a wider range of strain paths. Four different necking detection methods are investigated and proper ones are selected based on finite element modeling and the Marciniak test. An anisotropic Gurson-Tvergaard-Needleman (GTN) plasticity model is calibrated and implemented to reproduce the behavior of AA6061-T4 sheets. The predicted FLCs show good agreement with the experiments, indicating the effectiveness of the numerical biaxial tensile test combined with the anisotropic GTN plasticity model for predicting sheet metal formability.
MECHANICS OF MATERIALS
(2023)
Article
Engineering, Biomedical
Andrew B. Robbins, Alan D. Freed, Michael R. Moreno
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2020)
Article
Engineering, Biomedical
Mingliang Jiang, Zachary T. Lawson, Veysel Erel, Sophie Pervere, Tianyi Nan, Andrew B. Robbins, Alan D. Feed, Michael R. Moreno
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2020)
Article
Engineering, Biomedical
Michaela R. Pfau, Felipe O. Beltran, Lindsay N. Woodard, Lauren K. Dobson, Shelby B. Gasson, Andrew B. Robbins, Zachary T. Lawson, W. Brian Saunders, Michael R. Moreno, Melissa A. Grunlan
Summary: Self-fitting scaffolds prepared from biodegradable poly(epsilon-caprolactone)-diacrylate (PCL-DA) have shown promise in promoting bone formation and ingrowth in craniomaxillofacial (CMF) bone defects, as evidenced by histological analysis, micro-CT, and biomechanical push-out tests in a rabbit calvarial defect model. The results suggest that these scaffolds could potentially serve as an effective treatment option for CMF defects.
ACTA BIOMATERIALIA
(2021)
Article
Materials Science, Multidisciplinary
Mingliang Jiang, Zhujiang Wang, Alan D. Freed, Michael R. Moreno, Veysel Erel, Adam Dubrowski
Summary: In this study, the virtual fields method (VFM) was used to extract constitutive parameters of silicone elastomers under equi-biaxial and general biaxial tests. It was found that the negative effects of missing data and noise introduced by digital image correlation (DIC) can be mitigated by properly scaling the load applied to the specimen boundary and extracting parameters through the least square method based on deformation fields of all loading steps.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2022)
Article
Engineering, Biomedical
Mingliang Jiang, Jiawen Dai, Guangxu Dong, Zhujiang Wang
Summary: Thirteen hyperelastic models of silicone elastomers were evaluated using the virtual fields method combined with full-field deformation data obtained from biaxial tests. The Yeoh model performed the best under finite biaxial deformation, and the first invariant has a significant role in constitutive modeling, while the second invariant does not have a clear influence on improving fitting performance.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Multidisciplinary Sciences
Michael R. Waters, Zachary A. Newell, Daniel C. Fisher, H. Gregory McDonald, Jiwan Han, Michael Moreno, Andrew Robbins
Summary: Bone fragments from a mastodon in the Manis site, Washington, were digitally excavated and reconstructed to create a human-made projectile point, which is thin, broad, and has smooth faces and sharp edges. The Manis projectile point, made of mastodon bone and dating back 13,900 years, is different from the cylindrical osseous points commonly found in the 13,000-year-old Clovis complex. This discovery suggests that pre-Clovis people in the Pacific Northwest used osseous weapons to hunt megafauna during the Bolling-Allerod.
Article
Mechanics
Mingliang Jiang, Xinwei Du, Arun Srinivasa, Jimin Xu, Zhujiang Wang
Summary: QR decomposition-based constitutive relations for hyperelastic materials have been extensively studied, but there is a lack of research on material parameter identification for these models. In this work, a reformulated virtual fields method is proposed, which is more concise and easier to implement compared to the conventional approach. The proposed method is validated by deriving the Mooney-Rivlin model under the QR framework and identifying its material parameters for incompressible silicone specimens. The results demonstrate the effectiveness of the virtual fields method for QR decomposition-based models.
Article
Multidisciplinary Sciences
Zachary T. Lawson, Jiwan Han, W. Brian Saunders, Melissa A. Grunlan, Michael R. Moreno, Andrew B. Robbins
Summary: This study developed fixtures and methods for performing push-out tests on calvarial models to evaluate the bone-implant interfacial strength. The newly developed fixture was validated through experiments on murine and leporine cranial caps with different defect sizes and treatments. The results demonstrate the effectiveness of the fixture for characterizing the strength of a bone implant interface in calvarial defect repair.
Article
Multidisciplinary Sciences
Shannon N. Ingram, Andrew B. Robbins, Stacy J. Gillenwater, Vince Gresham, James C. Sacchettini, Michael R. Moreno
Article
Orthopedics
Kyle R. Sochacki, Zachary T. Lawson, Robert A. Jack, David Dong, Andrew B. Robbins, Michael R. Moreno, Patrick C. McCulloch
ARTHROSCOPY TECHNIQUES
(2020)
Article
Orthopedics
Domenica A. Delgado, Bradley S. Lambert, Nickolas Boutris, Patrick C. McCulloch, Andrew B. Robbins, Michael R. Moreno, Joshua D. Harris
JOURNAL OF THE AMERICAN ACADEMY OF ORTHOPAEDIC SURGEONS GLOBAL RESEARCH AND REVIEWS
(2018)
Article
Engineering, Biomedical
Alysha P. Kishan, Andrew B. Robbins, Sahar F. Mohiuddin, Mingliang Jiang, Michael R. Moreno, Elizabeth M. Cosgriff-Hernandez
ACTA BIOMATERIALIA
(2017)
Article
Engineering, Biomedical
Silvia Minardi, Francesca Taraballi, Xin Wang, Fernando J. Cabrera, Jeffrey L. Van Eps, Andrew B. Robbins, Monica Sandri, Michael R. Moreno, Bradley K. Weiner, Ennio Tasciotti
ACTA BIOMATERIALIA
(2017)
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)