Article
Multidisciplinary Sciences
Yaru Qin, Qihui Wang, Chenglong Shi, Bing Liu, Shuqing Ma, Miao Zhang
Summary: This paper comprehensively evaluates the static mechanical properties, permeability, and cell adhesion effect of Ti6Al4V bionic scaffolds with different axial diameter ratios using numerical simulation and experiments. The results show that the scaffold with a non-1:1 axial diameter ratio has more advantages than the ordinary uniform scaffold structure with a 1:1 axial diameter ratio, which is of great significance for the optimal design of scaffolds.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Mechanical
Abdulla Almomani, Abdel-Hamid I. Mourad
Summary: Triply periodic minimal surface (TPMS) lattices have shown low densities and multi-functionalities, but there is a lack of understanding of the governing parameters, including fracture toughness and the use of conventional fracture testing protocols. This work aims to extract accurate toughness measurements, estimate KIc using LEFM conditions, and investigate the effect of relative density and unit cell size on fracture toughness. Results show that KIc increases linearly with relative density and with the square root of unit cell size. The outcomes contribute to understanding the damage tolerance of TPMS lattices and the reliability of lightweight materials.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Engineering, Marine
Bao-Loi Dang, Vuong Nguyen-Van, Phuong Tran, Magd Abdel Wahab, Jaehong Lee, Klaus Hackl, H. Nguyen-Xuan
Summary: This study proposes a novel porous breakwater based on triply periodic minimal surface (TPMS) cellular structure, and investigates its mechanical and hydrodynamic characteristics through experimental and numerical simulations. The results show that the Gyroid cellular structure exhibits better mechanical performance and its porosity affects the maximum load significantly. Computational fluid dynamics simulations reveal that the proposed breakwater can effectively reduce the energy of incident waves, and the porosity variation also influences wave transmission coefficients and wave-induced forces on the structure.
Article
Materials Science, Multidisciplinary
Shoujin Zeng, Weihui He, Jing Wang, Mingsan Xu, Tieping Wei
Summary: In this study, a porous bone scaffold with high yield strength and low elastic modulus was successfully manufactured by fusing TPMS units. The results provide an effective method for the application of bone substitutes.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Engineering, Manufacturing
Weiwei Wang, Yuan Jin, Yanru Mu, Minghua Zhang, Jianke Du
Summary: A novel type of tubular structure with negative Poisson's ratio based on gyroid-type TPMSs is proposed and investigated in this study. The compressive behaviors of the fabricated tubular structures are studied using experimental and numerical methods. The proposed method shows excellent potential for guiding the design and optimization of auxetic tubular structures.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Engineering, Manufacturing
Wei Liu, Lin Sang, Zihui Zhang, Shanglian Ju, Fei Wang, Yiping Zhao
Summary: This study utilized additive manufacturing to create triply periodic minimal surface (TPMS) structures and analyzed their mechanical properties and energy absorption capacity. The results demonstrated that the Diamond TPMS structure had superior load-carrying and energy absorption capacity. Additionally, polymeric blends with higher resistance to plastic deformation showed less internal damage and good resilient behavior. The cyclic loading experiments revealed that the Diamond TPMS structure exhibited better damping behavior, while the Schwarz P structure displayed elastic behavior.
JOURNAL OF MANUFACTURING PROCESSES
(2023)
Article
Thermodynamics
Luthfan Adhy Lesmana, Chenxi Lu, Fei Chen, Muhammad Aziz
Summary: Metal hydrides are promising materials for hydrogen storage, but their weight limits their application in the mobility sector. This study proposes using triply periodic minimum surface structures as reactors and heat exchangers to improve the practicality and efficiency of MH-based hydrogen storage systems.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Materials Science, Multidisciplinary
Cong Zhang, Hao Zheng, Lei Yang, Yang Li, Jiulu Jin, Wencao Cao, Chunze Yan, Yusheng Shi
Summary: Due to their lightweight design, high energy absorption capacity, and excellent thermal and sound insulation properties, lattice structures have great potential in various fields. In this study, a specific geometric design was used to create lattice structures, and their mechanical properties and deformation characteristics were investigated through experiments and simulations. The results showed that the stress change in the graded structure was larger during plastic deformation, and the mechanical properties could be customized by controlling the volume fraction.
MATERIALS & DESIGN
(2022)
Article
Engineering, Biomedical
Islam Bouakaz, Christophe Drouet, David Grossin, Elisabeth Cobraiville, Gregory Nolens
Summary: Bone repair is a challenging task in regenerative medicine, especially for large defects. This study explores the use of TPMS porous structures as bone substitutes, fabricated using a 3D printing technique. The scaffolds were evaluated for their percolation, absorption, and mechanical properties, and implanted in a large animal model for 6 months. The results demonstrate the bone-forming capability of the TPMS scaffolds, with better performance than the clinical standard at early implantation time.
ACTA BIOMATERIALIA
(2023)
Article
Engineering, Biomedical
Lan Li, Peng Wang, Jing Jin, Chunmei Xie, Bin Xue, Jiancheng Lai, Liya Zhu, Qing Jiang
Summary: In this study, a TPMS-based meniscal scaffold was designed and evaluated for its mechanical properties and cartilage protection effect. The results showed that the scaffold with a larger volume fraction and longer functional periodicity exhibited better mechanical performance and closer resemblance to the native biomechanical environment. The TPMS group also demonstrated superior cartilage protection compared to the grid group. The findings highlight the importance of the TPMS method in meniscal regeneration and cartilage protection.
BIOMATERIALS RESEARCH
(2022)
Article
Thermodynamics
Wei Tang, Hua Zhou, Yun Zeng, Minglei Yan, Chenglu Jiang, Ping Yang, Qing Li, Zhida Li, Junheng Fu, Yi Huang, Yang Zhao
Summary: Heat dissipation capacity is a bottleneck in developing high heat release devices, and studying the convective heat transfer properties of TPMS structures is essential. This research evaluates the convective heat transfer performance of representative TPMS structures and elucidates their mechanism of enhanced heat transfer.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Engineering, Biomedical
Xiaolong Zhu, Feng Chen, Hong Cao, Ling Li, Ning He, Xiaoxiao Han
Summary: This paper introduces a new type of scaffold with a triply periodic minimal surface (TPMS) and multiple parallel channels, which can modulate its elastic modulus. The geometric parameters of TPMS and parallel channels were optimized through numerical simulations, and the optimized scaffold with two types of structures was fabricated. Finally, human adipose-derived stem cells were incorporated into the scaffold for improvement of the cell growth environment by perfusion and ultraviolet curing.
INTERNATIONAL JOURNAL OF BIOPRINTING
(2023)
Article
Multidisciplinary Sciences
Lan Li, Peng Wang, Huixin Liang, Jing Jin, Yibo Zhang, Jianping Shi, Yun Zhang, Siyuan He, Hongli Mao, Bin Xue, Jiancheng Lai, Liya Zhu, Qing Jiang
Summary: The Haversian system-like gradient structure can effectively promote bone regeneration. This structural design, based on triply periodic minimal surface architectures, with pore size varying from the edge to the center, can be used as a new solution for the clinical application of prosthesis design.
JOURNAL OF ADVANCED RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Koichiro Hayashi, Ryo Kishida, Akira Tsuchiya, Kunio Ishikawa
Summary: The aging population has increased the demand for bone regeneration. The pore structure of a scaffold plays a critical role in its mechanical strength and bone regeneration. Triply periodic minimal surface gyroid structures have been hypothesized to be superior to strut-based lattice structures in terms of bone regeneration, and this hypothesis was experimentally validated in this study. The gyroid scaffolds showed higher compressive strength, higher porosity, and significantly more bone formation compared to the grid scaffolds.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Yuting Lv, Binghao Wang, Guohao Liu, Yujin Tang, Jia Liu, Guijiang Wei, Liqiang Wang
Summary: In this work, a new bone-like scaffold with a continuous porosity gradient change based on minimal surfaces was designed. The scaffolds were successfully prepared using selective laser melting with a new alloy. The results showed that the scaffolds had low elastic modulus and suitable strength compared to human bone. The type of unit structure had a significant effect on the mechanical properties and permeability of the scaffolds.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Polymer Science
Raj Agarwal, H. K. Mehtani, Rishi Kumar, K. K. Raina
Summary: This study achieves thermally stable superhydrophobic doping of carboxyl functionalized multi-wall carbon nanotubes (MWCNT) in PVDF nanocomposite membranes at different weight percentages. The optimal concentration of 0.1% MWCNT in PVDF/COOH nanocomposite membrane showed the highest structural stability, crystallinity, and electrical properties.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2023)
Article
Materials Science, Composites
Abhinav Shard, Raj Agarwal, Mohinder Pal Garg, Vishal Gupta
Summary: This study proposes a rotary ultrasonic-assisted drilling technique using diamond-impregnated tools to reduce thermal damage in composite materials. The influence of drilling parameters on temperature elevations was monitored, and the results showed that rotational speed and abrasive grit size have the highest impact. Increasing ultrasonic power during drilling can minimize temperature elevations.
JOURNAL OF THERMOPLASTIC COMPOSITE MATERIALS
(2023)
Article
Engineering, Chemical
Shrutika Sharma, Vishal Gupta, Deepa Mudgal
Summary: This study fabricated bone plates using poly lactic acid and improved their mechanical properties through polydopamine coating. The effect of infill pattern on coating deposition and mechanical properties was investigated, and it was found that a concentric pattern is suitable for applications that require both high mechanical strength and maximum elongation at break, while a gyroid pattern is suitable for applications that only require high mechanical strength.
POLYMER ENGINEERING AND SCIENCE
(2023)
Review
Metallurgy & Metallurgical Engineering
Shrutika Sharma, Mayank Sharma, Vishal Gupta, Jaskaran Singh
Summary: This article provides a detailed review of various aspects of the forging process, discussing the optimization of factors such as preform design, forging conditions, workpiece dimensions, die design, lubricant properties, and thermal treatment parameters to enhance tool life and forging quality. Methods for selecting die-forging tool material and improving surface quality of forged products are also reviewed. The article also presents measurement methods for forging quality, tool life, machine effectiveness, forging image acquisition, and forging parameters, reducing the risk of error in the forging process. This review serves as a reference for researchers to increase production rate, enhance measurement system effectiveness, and improve the quality of forged products.
STEEL RESEARCH INTERNATIONAL
(2023)
Article
Engineering, Manufacturing
Shrutika Sharma, Mayank Sharma, Vivek Jain, Vishal Gupta
Summary: The use of medical imaging techniques, such as magnetic resonance imaging and computed tomography, has made radiographic diagnosis more informative. However, understanding 3D anatomical structures from 2D images is difficult. The technique of 3D Printing has been developed to overcome this limitation and has shown significant improvement in the pre planning of surgical treatments.
INTERNATIONAL JOURNAL OF INTERACTIVE DESIGN AND MANUFACTURING - IJIDEM
(2023)
Article
Acoustics
Raj Agarwal, Vishal Gupta, Jaskaran Singh
Summary: This study aims to use ultrasound actuation to improve the pullout strength of orthopaedic bone screws by reducing induced cutting force and temperature rise during drilling. The results show that ultrasonic-assisted drilling leads to better cell viability and lower tissue damage compared to conventional drilling.
Article
Automation & Control Systems
Shrutika Sharma, Vishal Gupta, Deepa Mudgal, Vishal Srivastava
Summary: This study utilized machine learning algorithms to predict the tensile and flexural strengths of PDM-coated PLA bone plates. The LSTM model demonstrated the best performance, accurately predicting the strength values.
ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE
(2023)
Article
Engineering, Biomedical
Shrutika Sharma, Deepa Mudgal, Vishal Gupta
Summary: In this study, Poly Lactic Acid based bone plates were fabricated using 3D Printing technology and were coated with biocompatible polydopamine. The findings suggest that uncoated bone plates have higher degradation rate and significant reduction in mechanical characteristics, while the coating can slow down the degradation of PLA bone plates and result in complete healing of bone fracture.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Engineering, Chemical
Shrutika Sharma, Vishal Gupta, Deepa Mudgal, Vishal Srivastava
Summary: Coating 3D printed PLA bone plates with polydopamine enhances their mechanical strength. The combination of response surface methodology and machine learning allows for determination of optimal printing parameters, reducing waste, personalized bone plates, improved implant fit and functionality, and cost reduction.
POLYMER ENGINEERING AND SCIENCE
(2023)
Review
Engineering, Biomedical
Shrutika Sharma, Sanchita Pahuja, Vishal Gupta, Gyanendra Singh, Jaskaran Singh
Summary: Three-Dimensional Printing has made significant progress in the field of biomedical science, especially in spine surgeries. It has the ability to fabricate highly complex structures with ease and high dimensional accuracy. The article summarizes the benefits of 3D printing based models in spine pathology, including preoperative planning, training, improved communication with patients, and better surgical outcomes.
BIOMEDICAL ENGINEERING LETTERS
(2023)
Article
Acoustics
Shrutika Sharma, Vishal Gupta, Deepa Mudgal
Summary: Poly Lactic Acid (PLA) based bone plates fabricated using Fused Deposition Modeling can have improved mechanical strength by biocompatible polydopamine (PDM) coating. The effect of ultrasonic assisted coating parameters on tensile strength of coated bone plates was investigated and compared using Response Surface Methodology (RSM) and machine learning (ML) models. The gradient boosting regression (GBReg) model outperformed other models in terms of accuracy and prediction performance for predicting the tensile strength of PDM coated bone plates.
Article
Materials Science, Multidisciplinary
Shrutika Sharma, Vishal Gupta, Deepa Mudgal
Summary: Polymer based implants with porous structure and minimal stress shielding provide excellent biocompatibility. However, 3D printed PLA structures have insufficient mechanical strength for biomedical applications. This study addresses this challenge by enhancing their mechanical properties through surface modification using a one-step oxidative polymerization process to create a biocompatible polydopamine coating. The study investigates the effects of printing and coating parameters on the tensile and flexural behavior of bone plates, and confirms the deposition of polydopamine coating using SEM/EDS analysis, XRD, and Raman spectroscopy. The findings show significant enhancement in tensile and flexural strength, as well as improved hydrophilicity, making the coated bone plates suitable for tissue engineering applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Vishal Gupta, Rakesh Malik, Lalit Kumar
Summary: A highly efficient, flexible, and cost-effective ammonia gas sensor has been developed using a biodegradable paper substrate and optimized polyaniline film as an active sensing material. The sensor demonstrates excellent repeatability, stability, and selectivity towards ammonia detection, with a quick response time and the ability to detect rapid changes in concentration.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
