Article
Materials Science, Multidisciplinary
Luquan Ren, Zhuoshi Li, Qingping Liu, Lei Ren, Qian Wu, Bingqian Li, Guiwei Li, Zhengyi Song, Xueli Zhou
Summary: The article introduces a bioinspired programmed 4D printing method, achieving fiber orientation and resin crosslinking through magnetic orientation and 3D printing. The converted complex 3D structures can be permanently preserved. The study investigates the effects of crosslinking density and other factors on the deformation of printed objects.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Nanoscience & Nanotechnology
Seyeon Park, Eiyong Park, Minjae Lee, Sungjoon Lim
Summary: This paper proposes a 4D-printed multimaterial Miura origami structure for RF spectrum applications, which can achieve shape morphing antenna arrays through thermal actuation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Lei Wan, Zhengyi Mao, Hui Liu, Youneng Xie, Fucong Lyu, Zhaowenbo Cao, Yunhu He, Jianan Yin, Xiongqi Han, Wai Yan Kannie Chan, Jian Lu
Summary: This paper proposes a direct four-dimensional (4D) printing technology for achieving and precisely controlling complex ceramic architectures. The designability and flexibility of the proposed approach were demonstrated. The obtained ceramics exhibited excellent mechanical properties. This study can help establish a novel paradigm for designing ceramics with complex structures, with potential for application in various fields such as aerospace and biomedical engineering.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Tobias Kuhnt, Sandra Camarero-Espinosa, Milad Takhsha Ghahfarokhi, Mariana Arreguin, Riccardo Cabassi, Franca Albertini, Daniel Nieto, Matthew B. Baker, Lorenzo Moroni
Summary: Shape morphing materials, particularly those fabricated by 4D printing, are becoming increasingly popular due to their ability to be pre-programmed and remotely actuated using magnetic nanoparticles. These materials show great potential for biomedical applications, but are currently limited by factors such as biocompatibility and the nature of the required stimuli.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Analytical
Seonjin Lee, Doyeon Bang, Jong-Oh Park, Eunpyo Choi
Summary: The single-layer 4D printing technology has immense potential and challenges in areas such as smart materials, robotics, and drug delivery systems, as it allows for controllable response to external stimuli. In this paper, the authors demonstrate the ability to program shape morphing by patterning both the static and shape-morphing layers using a single-layer 4D printing system. This technique has the potential to contribute to the development of micro-scale soft robots.
Article
Chemistry, Multidisciplinary
Devin J. Roach, Xiaohao Sun, Xirui Peng, Frederic Demoly, Kun Zhou, Hang Jerry Qi
Summary: In this study, a LCE-SMP composite was created using 4D printing technology, which enables rapid and reversible shape changes and tunable shape morphing regulated by cooling rate. The composite has a high stiffness at low temperature to support heavy loads, offering a novel approach for future engineering applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Manufacturing
Luquan Ren, Wangxuan Li, Huili Liu, Bingqian Li, Xueli Zhou, Lei Ren, Zhiwu Han, Zhengyi Song, Qingping Liu
Summary: A novel method of rotational co-extrusion 3D printing is proposed to enable the programmable material configuration of extruded filaments, achieving a variety of spatial distribution configurations and customized surface textures. This method has the potential applications in reconfigurable structural materials, tunable meta-materials, tissue engineering, soft robots, etc.
ADDITIVE MANUFACTURING
(2023)
Article
Engineering, Manufacturing
Chiara Zarna, Sandra Rodriguez-Fabia, Andreas T. Echtermeyer, Gary Chinga-Carrasco
Summary: This study explores the potential of wood fiber reinforced fillers in shape-changing 3D printing (4D printing). The results show that the addition of different additives to thermomechanical pulp fibers has a significant impact on fiber morphology and material properties. Using hot water as a stimulus, the study also found that 3D printed specimens with milled thermomechanical pulp fibers have higher tensile strength and shape-changing ability compared to specimens with thermomechanical pulp fiber granulate.
ADDITIVE MANUFACTURING
(2022)
Article
Nanoscience & Nanotechnology
Heng Deng, Chi Zhang, Kianoosh Sattari, Yun Ling, Jheng-Wun Su, Zheng Yan, Jian Lin
Summary: A 4D printing method for fabricating multistable shape-morphing structures has been proposed, allowing for quantitative control of the structures' shapes. These structures have been demonstrated to be applicable in the assembly of 3D electronics and adaptive wearable sensors.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Physical
Irene Chiesa, Maria Rachele Ceccarini, Silvia Bittolo Bon, Michela Codini, Tommaso Beccari, Luca Valentini, Carmelo De Maria
Summary: Four-dimensional (4D) printing is an innovative additive manufacturing technology that fabricates structures capable of evolving over time in response to environmental stimuli. It transforms static objects into programmable active structures that achieve their functions through changes in their physical/chemical properties.
Article
Multidisciplinary Sciences
Ze Zhao, Jatin Kumar, Youngkyu Hwang, Jingyu Deng, Mohammed Shahrudin Bin Ibrahim, Changjin Huang, Subra Suresh, Nam-Joon Cho
Summary: Using standard digital printing technologies, programmable shape evolution and deformation can be induced in plant-based natural materials to meet a wide spectrum of uses. These autonomously hygromorphing configurations can be frozen by postprocessing coatings and have potential sustainable applications.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Materials Science, Multidisciplinary
Pritiranjan Mondal, Arkodip Mandal, Kaushik Chatterjee
Summary: A generalizable 4D bioprinting technique using graded semi-interpenetrating network (IPN) hydrogels is presented, showing rapid and sequential shape-morphing transformations in two opposite directions upon immersion in water. The bi-directional shape morphing behavior is achieved through anisotropic water uptake and subsequent water redistribution. The study demonstrates the precise programming of spatiotemporal characteristics by rationally designing dual-component hydrogel systems. The hydrogels have the potential to revolutionize the design of soft, deployable devices for minimally invasive drug delivery in the human body.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Chen Xin, Dongdong Jin, Rui Li, Dawei Wang, Zhongguo Ren, Bingrui Liu, Chao Chen, Longfu Li, Shunli Liu, Bing Xu, Yachao Zhang, Yanlei Hu, Jiawen Li, Li Zhang, Dong Wu, Jiaru Chu
Summary: Micromachines with high environmental adaptability have the potential to deliver targeted drugs in complex biological networks. However, current 4D printing methods have limitations in processing efficiency and single processing material, which restrict the development and application of shape-morphing micromachines (SMMs). In this study, two 4D printing strategies using pH-responsive hydrogels were proposed to fabricate SMMs for complex micro-networks traversing. The SMMs showed efficient magnetic, bubble, and hybrid propulsion modes and demonstrated the capability of traversing narrow micronetworks for targeted cargo delivery.
Review
Engineering, Biomedical
Guiwen Qu, Jinjian Huang, Guosheng Gu, Zongan Li, Xiuwen Wu, Jianan Ren
Summary: Biomedical implants have great potential in tissue repair and replacement, especially with the use of 3D printing for more precise customization. The emerging technology of 4D printing enables the production of dynamic functional implants by using shape-responsive materials and design methods. These implants can respond to stimuli and seamlessly integrate with irregular tissue defects, defect-luminal organs, or curved structures.
INTERNATIONAL JOURNAL OF BIOPRINTING
(2023)
Article
Chemistry, Multidisciplinary
Jingang Wang, Yuzhao Zhang, Jianchen Zheng, Xiubao Zhao, Hongji Guo, Ye Qiu, Xiaoduo Wang, Lianqing Liu, Haibo Yu
Summary: The active heterostructure with smart-response material and inactive material can deform to respond to external stimuli. The integration of 4D printing and two-photon polymerization technology allows for precise programmable design at the microscale, posing a challenge for constructing customized shape morphing micromachines. A reverse design strategy based on multi-material stepwise 4D printing is proposed, using a reverse design algorithm to guide the structural design of biomimetic micromachines.
Article
Engineering, Manufacturing
Masahito Ueda, Shun Kishimoto, Masao Yamawaki, Ryosuke Matsuzaki, Akira Todoroki, Yoshiyasu Hirano, Antoine Le Duigou
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2020)
Review
Materials Science, Multidisciplinary
Antoine Le Duigou, David Correa, Masahito Ueda, Ryosuke Matsuzaki, Mickael Castro
MATERIALS & DESIGN
(2020)
Article
Materials Science, Composites
Keisuke Iizuka, Akira Todoroki, Takuya Takahashi, Masahito Ueda
Summary: The study monitored 3D printed CFRTPs using the electrical resistance change method, revealing a larger standard deviation in resistance along the 90 degrees orientation and reverse piezo-resistivity in cyclic tests at low stress ranges.
ADVANCED COMPOSITE MATERIALS
(2021)
Article
Mechanics
Akira Todoroki, Tatsuki Oasada, Masahito Ueda, Ryosuke Matsuzaki, Yoshiyasu Hirano
Summary: This study proposes a simple method to reinforce the lay-up direction of 3D-printed composites. By inserting a reinforcing bar with continuous carbon fibers into a through hole and applying a large electric current to melt the bar and fuse it to the part, the stiffness and strength of the part are effectively increased.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Manufacturing
Hirohide Shiratori, Akira Todoroki, Masahito Ueda, Ryosuke Matsuzaki, Yoshiyasu Hirano
Summary: This study proposed a test method for evaluating the strength of curved sections of 3D printed continuous carbon fiber reinforced thermoplastics. Curved beam tests were conducted using L-shaped specimens with designed test jigs, which were verified with finite element analysis. Testing different geometries of L-shaped specimens revealed the effect of radius on circumferential strength, while investigating the failure mechanism through X-ray CT images showed that compressive failure occurred first with decreasing radius.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Materials Science, Composites
Yan Ma, Tomohiro Yokozeki, Masahito Ueda, Yuqiu Yang, Hiroyuki Hamada, Toshi Sugahara
Summary: Finite element simulation shows that the interface properties are crucial in determining the fracture behavior of unidirectional CF/PA6 laminates. Laminates with weak interface properties exhibit a splitting fracture mode, while those with strong interface properties show a step-like fracture behavior.
JOURNAL OF COMPOSITE MATERIALS
(2021)
Article
Materials Science, Composites
Shiryu Morita, Masahito Ueda, Takuya Takahashi, Kentaro Kajiwara, Akinori Yoshimura, Naoki Sugiura
Summary: In this study, X-ray computed tomography of unidirectional CFRP composites was performed, and a numerical model of CFRP was automatically generated using digital image correlation. The results showed that the accuracy of fiber tracking is crucial for generating duplicate CFRP without overlapping fibers, and the accuracy improved with decreasing distance between tomograms.
ADVANCED COMPOSITE MATERIALS
(2023)
Article
Engineering, Multidisciplinary
Naruki Ichihara, Masahito Ueda
Summary: A framework is proposed for producing optimized infill structures for 3D-printed curvilinear fiber-reinforced polymer composites. The material orientation was optimized to maximize physical properties, and a phase field of stripe patterns was developed based on the optimized material orientation vector field using a local activation and long-range inhibition system. The phase field was then converted into a 3D print path. Numerical and experimental validations demonstrated that the optimized infill structure exhibited higher structural stiffness compared to commonly used concentric or rectilinear strategies, highlighting the advantage of the proposed method.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Mechanics
Ryota Sako, Ryoma Aoki, Ryo Higuchi, Masahito Ueda, Yuta Urushiyama, Tomohiro Yokozeki
Summary: The purpose of this study is to establish end-notched flexure (ENF) tests for curved beam specimens and propose a compliance-based beam method (CBBM) for data reduction. The results showed good agreement between the ENF tests and curved beam theory, and the fracture toughness values obtained from the proposed CBBM were validated using finite element analysis.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Naruki Ichihara, Masahito Ueda
Summary: This study introduced a design framework to improve the toughness of 3D-printed carbon fiber-reinforced composite structures by utilizing intermediate material fraction obtained in the topology optimization. The framework was based on anisotropic topology optimization considering material fraction and material orientation. Experimental validations showed that the framework enhanced the toughness of the 3D-printed carbon fiber-reinforced composite structure.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Masahito Ueda, Naruki Ichihara, Tomohiro Yokozeki, Takeshi Watanabe, Yusuke Tsuchiyama, Yuta Urushiyama
Summary: The elastic, plastic, and in-plane damage evolutions of a carbon-fiber-reinforced epoxy composite fabricated via filament winding were studied using continuum damage mechanics. The specific voids and resin-rich region distributions were influenced by the material and manufacturing conditions. The damage evolution was described by a unified curve, demonstrating that the continuum damage mechanics approach provided a reliable prediction, although the critical damage at ultimate failure depended on the material and manufacturing conditions. The damage coupling parameters were also affected by these conditions, resulting in changes in the damage evolution behavior under simultaneous shear and transverse damage development situations.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Engineering, Manufacturing
Masahito Ueda, Yuki Suzuki, Silvestre T. Pinho
Summary: The analytical method for calculating the axial compressive stress-strain relationship of a unidirectional carbon fiber-reinforced plastic (UD CFRP) was presented, taking into account the variability of the fiber misalignment angle. It was found that the load-bearing capabilities of different fiber groups decreased significantly with greater misalignment angles. Fibers with a misalignment angle of 0.5 degrees showed a large load drop after reaching their maximum loading, leading to ultimate failure.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Materials Science, Composites
Masahito Ueda, Yunosuke Tasaki, Chikara Kawamura, Kenji Nishida, Masanori Honda, Koichi Hattori, Toshiaki Miyanaga, Tetsuya Sugiyama
Summary: In this study, the global fiber kinking theory for estimating the axial compressive strength of unidirectional carbon fiber reinforced plastic was modified to address the localized fiber kinking problem. The deterministic mechanism of compressive strength and kink-band width was interpreted using graphical methods. The estimated values of composite axial compressive strength and kink-band width based on shear properties of the composite and matrix were found to be in good agreement with experimental results.
COMPOSITES PART C: OPEN ACCESS
(2021)
Article
Multidisciplinary Sciences
Masahito Ueda, Vu Manh Cuong, Atsushi Yamanaka, Kazuhiro Sakata
