Article
Materials Science, Multidisciplinary
Tolga Topkaya, Yuan Gao, Philippe H. Geubelle
Summary: This study investigates the manufacturing of short-fiber-reinforced polymeric matrix composites based on frontal polymerization (FP) using numerical analysis and analytical predictions. The results show the dependence of the steady-state front velocity and inclination angle on the fiber orientation angle and volume fraction.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Materials Science, Composites
Ping Liu, Yucheng Zhong, Qing-Xiang Pei, Viacheslav Sorkin, Yong-Wei Zhang
Summary: Short fiber reinforced thermoplastic composites have gained significant interest for their low density, high strength, environmental resistance, and low cost. Optimizing internal structures to maximize mechanical properties is crucial. Increasing the weight fraction of linkage material can enhance the mechanical properties of SFRTPCs.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Civil
Hossein Bisheh
Summary: This paper proposes a virtual framework for obtaining the elastic response of unidirectional continuous bamboo fiber-reinforced composites through micromechanical modeling. The framework incorporates a stochastic algorithm to generate Representative Volume Elements (RVEs) that account for micro-structural uncertainty and variability. The algorithm and model are validated using experiments and theoretical models. The effects of random fiber packing, fiber geometries, and variable RVE sizes on the accuracy of elastic property prediction are investigated through statistical micro-structural realizations.
Article
Engineering, Aerospace
Rossana R. Fernandes, Ali Y. Tamijani, Marwan Al-Haik
Summary: This study focuses on investigating the mechanical properties of thermoplastic matrix composites, finding that fiber layout influences the strength and glass transition temperature of printed composites, and dynamic mechanical analysis reveals high temperature-dependency and unexpectedly low frequency-dependency of the materials.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Weiwei Wang, Han Wang, Shaohua Fei, Haijin Wang, Huiyue Dong, Yinglin Ke
Summary: This paper introduces a novel method for generating random fiber distributions of carbon fiber reinforced plastic with high volume fraction. An adaptive fiber shaking module is developed to overcome issues like unreasonable resin-rich zones, with a maximum fiber volume fraction reached at 67.43%. Finite element analysis shows a maximum absolute error of 7.354% in elastic properties when compared with experimental and simulation results.
MATERIALS & DESIGN
(2021)
Article
Mechanics
E. Kormanikova, M. Zmindak, P. Novak, P. Sabol
Summary: This paper investigates the material properties of carbon fiber-reinforced composite materials through numerical homogenization and experimental research, as well as their application in strengthening reinforced concrete structures. The results indicate that using composite lamella can reduce the maximum tensile stress in concrete and concrete reinforcement.
COMPOSITE STRUCTURES
(2021)
Article
Polymer Science
Phattarin Mora, Chananya Nunwong, Parkpoom Sriromreun, Preecha Kaewsriprom, Ukrit Srisorrachatr, Sarawut Rimdusit, Chanchira Jubsilp
Summary: The mechanical and thermal properties of a new polybenzoxazine-based glass fiber post for dental restorations were evaluated. The study found that the reinforcement of glass fiber improved the properties of the polybenzoxazine composite, and the composite exhibited similar behavior to natural teeth.
Article
Critical Care Medicine
J. Albareda-Albareda, S. Gabarre-Raso, J. Rosell-Pradas, S. Puertolas-Broto, E. Ibarz-Montaner, B. Redondo-Trasobares, J. Gomez-Vallejo, N. Blanco-Rubio, M. Sanchez-Gimeno, A. Herrera-Rodriguez, L. Gracia-Villa
Summary: This study analyzed the influence of retrograde nail length on the biomechanical behavior of A type supracondylar fractures through finite element simulation, finding new possibilities for blocking configurations to provide recommendations for nail design and clinical practice. The study aimed to avoid excessive stress concentrations and potential issues like screw rupture and stress fractures in the cortical bone.
INJURY-INTERNATIONAL JOURNAL OF THE CARE OF THE INJURED
(2021)
Article
Materials Science, Composites
Denizhan Yavas, Ziyang Zhang, Qingyang Liu, Dazhong Wu
Summary: This study investigates the inter-layer and cross-layer fracture behavior of 3D printed short CFRP composites through experimental and numerical methods. The cross-layer fracture toughness was found to be three-fold of the inter-layer counterparts. Fracture surface morphology and crack-tip strain field demonstrated different toughening mechanisms for cross-layer and inter-layer fractures.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Composites
Justin D. Miller, Jan-Anders E. Mansson
Summary: The development of design guidelines and analysis techniques is crucial for the adoption of 3D tow reinforced hybrid-molded structures. The discrepancies in fiber length caused by the cross-sectional dimensions of the tow bundle result in tow spreading and local fiber waviness. The effects of simulating the resulting fiber orientations and effective elastic properties are investigated through modeling and comparing with previous experimental results. Accounting for fiber waviness greatly improves part stiffness predictions in tension, while spread tow bundles enhance strength and stiffness predictions compared to simulations with a uniform cross section. The behavior under bending load is significantly influenced by the overmolding material.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Engineering, Civil
Mattipally Prasad, Apichit Maneengam, Mohammed Javeed Siddique, Rajeshkumar Selvaraj
Summary: This study investigates the free vibration and bending characteristics of hybrid jute composite beams using the finite element method. The hybrid jute composite beam consists of jute fiber and glass fiber reinforced polymer composites, manufactured via a vacuum-assisted hand layup method. Experimental vibration analysis and MATLAB (R) software were used to predict the natural frequencies and validate the finite element results for composites. The study also examines the influence of stacking order, end condition, and ply orientation on the vibration and bending properties of hybrid jute composite beams.
Article
Mechanics
Xiaocan Zou, Zhonghai Xu, Jin Gao, Shibao Wu, Ruoyu Li, Wenjie Li, Xiaodong He
Summary: In this paper, a novel explicit multi-phase damage model based on the puck failure criterion and explicit dynamics is proposed to predict the progressive failure process of composite laminates. The model introduces a penalty parameter to reformulate the crack surface energy density for different failure modes to ensure reasonable damage prediction results. The model has undergone rigorous algebraic derivation to ensure thermodynamic consistency. The effects of explicit multi-phase field parameters on the damage prediction of composite are investigated by two representative cases, and the results show that the phenomenological failure criteria combined with appropriate explicit multi-phase field parameters can reasonably explain the progressive failure process of composite laminates.
COMPOSITE STRUCTURES
(2023)
Article
Polymer Science
Rajesh Kumar Mishra, Bijoya Kumar Behera, Vijay Chandan, Shabnam Nazari, Miroslav Muller
Summary: This investigation predicts the mechanical behavior of basalt-fiber-reinforced concrete using the finite element method (FEM) and validates the results through experiments. The study shows that basalt-fiber-reinforced concrete has superior mechanical properties compared to conventional concrete, with significant improvement under increased loading. It also offers a lightweight construction material and overcomes the problem of corrosion.
Article
Construction & Building Technology
Qudeer Hussain, Anat Ruangrassamee, Panuwat Joyklad, Anil C. Wijeyewickrema
Summary: The aim of this research is to investigate the efficiency of newly developed Natural Fiber Rope Reinforced Polymer (NFRRP) composites in enhancing the shear strength of reinforced concrete (RC) beams. Two types of NFRRP composites made from low-cost hemp and cotton fiber ropes were studied. The study found that the NFRRP composites significantly improved the load carrying abilities, energy dissipation, and deformation capabilities of RC beams compared to control beams.
Article
Engineering, Manufacturing
B. A. Castricum, M. Fagerstroem, M. Ekh, F. Larsson, S. M. Mirkhalaf
Summary: A coupled multi-scale model is developed to predict the non-linear elasto-plastic behavior of short fiber reinforced composites. The model incorporates a micro-mechanical model based on a two-step orientation averaging approach at the microscopic level and a Finite Element model at the macroscopic level. The model shows good predictive capability and computational efficiency improvements.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Orthopedics
Erik Aro, Jessica J. Alm, Niko Moritz, Kimmo Mattila, Hannu T. Aro
Article
Orthopedics
Sami Finnila, Niko Moritz, Niko Strandberg, Jessica J. Alm, Hannu T. Aro
JOURNAL OF ORTHOPAEDIC RESEARCH
(2019)
Article
Engineering, Biomedical
Carsten Rendenbach, Claudius Steffen, Kay Sellenschloh, Mark Heyland, Michael M. Morlock, Joonas Toivonen, Niko Moritz, Ralf Smeets, Max Heiland, Pekka K. Vallittu, Gerd Huber
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2019)
Article
Engineering, Biomedical
Oliver Liesmaki, Artem Plyusnin, Julia Kulkova, Lippo V. J. Lassila, Pekka K. Vallittu, Niko Moritz
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2019)
Article
Veterinary Sciences
Artem Plyusnin, Julia Kulkova, Gareth Arthurs, Niki Jalava, Peter Uppstu, Niko Moritz
RESEARCH IN VETERINARY SCIENCE
(2020)
Letter
Orthopedics
Hannu T. Aro, Sanaz Nazari-Farsani
Article
Orthopedics
Sanaz Nazari-Farsani, Mia E. Vuopio, Hannu T. Aro
JOURNAL OF ARTHROPLASTY
(2020)
Letter
Endocrinology & Metabolism
Hannu T. Aro, Sanaz Nazari-Farsani, Eliisa Loyttyniemi
JOURNAL OF BONE AND MINERAL RESEARCH
(2020)
Article
Biophysics
Sanaz Nazari-Farsani, Mia Vuopio, Eliisa Loyttyniemi, Hannu T. Aro
Summary: Cementless total hip arthroplasty relies on initial press-fit fixation of femoral stems against cortical bone for osseointegration, posing challenges in stability, especially in postmenopausal women with decreased bone mineral density. Postoperative hip BMD and walking activity are significantly associated with femoral stem rotation, with height acting as a potential confounding factor. The study highlights the need for high-resolution imaging techniques to explore reasons for stem subsidence even in women with normal hip BMD.
JOURNAL OF BIOMECHANICS
(2021)
Article
Orthopedics
Hannu T. Aro, Klaus Engelke, Kimmo Mattila, Eliisa Loyttyniemi
Summary: In postmenopausal women undergoing cementless total hip arthroplasty, initial femoral stem migration, as measured by RSA, is clinically significant. Patients with less than 2mm of initial stem subsidence showed faster recovery and better patient-reported outcome measures, while those with greater subsidence had slower recovery and less satisfactory outcomes.
JOURNAL OF BONE AND JOINT SURGERY-AMERICAN VOLUME
(2021)
Editorial Material
Orthopedics
Hannu T. Aro
Article
Orthopedics
Hannu T. Aro, Ville-Valtteri Valimaki, Niko Strandberg, Petteri Lankinen, Eliisa Loyttyniemi, Virva Saunavaara, Marko Seppanen
Summary: This study investigated the clinical efficacy of bioactive glass (BG) granules in filling defects following surgery for benign bone tumors. The results showed that BG granules had similar rates of treatment success compared to standard bone grafts. Additionally, BG granules had advantages in certain aspects, such as shorter operative time and less postoperative pain.
Article
Endocrinology & Metabolism
Sami Finnila, Eliisa Loyttyniemi, Hannu T. Aro
Summary: In a trial involving 65 postmenopausal women, denosumab failed to reduce initial migration of a cementless femoral stem despite preventing periprosthetic bone loss. Women with normal bone mineral density had significantly less stem subsidence compared to those with osteopenia and osteoporosis. Understanding 3D implant migration events can provide valuable insights for future large-scale trials.
Article
Endocrinology & Metabolism
Hannu T. Aro, Sanaz Nazari-Farsani, Mia Vuopio, Eliisa Loyttyniemi, Kimmo Mattila