Engineering, Manufacturing

Article Engineering, Manufacturing

Synergistic effects of periodic weak spark and spatial electric field for one-step dispersion of carbon-based micro/nanomaterial agglomerates

Yu Tian, Shuran Li, Mengze Li, Yihan Fu, Weidong Zhu, Keping Yan, Yinglin Ke

Summary: A universal spatiotemporal electrified (STE) approach is proposed to efficiently separate individual constituents from agglomerates, achieving one-step dispersion in the gas phase. The approach operates through periodic weak spark loosening and spatial electric field attraction, allowing for real-time separation and outputting of individual micro/nanomaterials.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Manufacturing

Facile fabrication Ni@SiO2/C derived from polysilsesquioxane as strong and broadband microwave absorbers with infrared stealth, flame retardant, and water resistant functions

Hanying Du, Jiaqi Ren, Donglin Zhang, Xiang Li, Wenchao Zhang, Rongjie Yang

Summary: This study presents a porous nickel nanoparticle supported on silica/carbon composite material, which exhibits strong and broadband microwave absorption. The optimized composite material shows excellent absorption performance at ultra-low filling ratio and possesses multiple properties.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Manufacturing

Pre-compositing polyetherketoneketone with short-cut carbon fibers into advanced powder materials toward composites with fully-adhered interfaces

Xin Wang, Yiting Qu, Junlei Bai, Fujun Xu, Bin Ding, Xiaohua Zhang

Summary: A solution-based strategy is proposed to achieve a strong bond between fibers and matrix in powder materials, resulting in improved mechanical properties, thermal conductivity, and fracture strain of the composites. The method also offers advantages such as enhanced powder flowability and thermal stability.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Manufacturing

Breathable and impact-resistant shear thickening gel based three-dimensional woven fabric composites constructed by an efficient weaving strategy for wearable protective equipment

Yuhao Tan, Yanxue Ma, Jingyan Liu, Zongjun Liu, Fengfan Wu, Yuling Li

Summary: This study demonstrates the application of flock-reinforced shear thickening gel in protective equipment. Three-dimensional woven fabrics with folded structures were efficiently manufactured using a modified loom, and 3D FRSTG/woven fabric composites were produced through a simple inclusion procedure. These composites exhibit flexibility and breathability, and show responsive impact resistance. Wearable protective applications prove the integration of breathability and impact resistance in these composites.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Manufacturing

Designing a novel carbonized polypyrrole nanotubes (C-PNTs) reinforced copper composite with good combination of mechanical-electrical and anti-corrosion properties

Zhaojie Li, Liang Liu, Rui Bao, Jianhong Yi, Caiju Li, Xiaofeng Chen, Chunxuan Liu

Summary: A novel carbon-based nanomaterial, carbonized polypyrrole nanotubes (C-PNTs), was used to fabricate copper composites. C-PNTs exhibited excellent self-dispersion characteristics and inherent interface bonding. Compared with commercially available carbon nanotubes (CNTs)/Cu composites, 0.3 vol% C-PNTs/Cu composites achieved significant improvement in mechanical-electrical properties and exhibited better corrosion resistance.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Manufacturing

Phosphonitrile-modified biomass multi-crosslinking strategy: Construction of flame retardant, smoke suppressive and antibacterial polyvinyl alcohol composites

Wei Tan, Lixiao Gao, Jingna Su, Chunlong Zuo, Yuanlin Ren, Xiaohui Liu

Summary: By modifying polyvinyl alcohol (PVA) through a multi-crosslinking structure and copper ions chelation, the problems of flammability, large smoke production, and bacterial breeding are solved. The modified PVA composites show improved flame retardancy, char-forming ability, smoke suppression, and antibacterial properties.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Manufacturing

Evolutionary algorithm-based integrated design of material-structural microwave absorption using material extrusion

Yuhui Zhang, Mengtong Shan, Han Lei, Pengzhen Zhao, Chen Yu, Yixing Huang

Summary: The development of electromagnetic wave absorbing materials and structures is of great importance in fields like aerospace and electronic communications. Traditional absorbing coatings have poor mechanical load-bearing capacity and struggle to meet lightweight requirements. In this study, a functional absorbing composite filament was developed using material extrusion technique, along with a magnetic lossy four-layer gradient honeycomb metastructure. The design enables effective absorption in the range of 6.09-37.18 GHz within a thickness of 16 mm, covering 81.82% of the frequency range of 2-40 GHz.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Manufacturing

3D soft glass printing of preforms for microstructured optical fibers

Przemyslaw Golebiewski, Pawel Wienclaw, Jaroslaw Cimek, Pawel Socha, Dariusz Pysz, Adam Filipkowski, Grzegorz Stepniewski, Olga Czerwinska, Ireneusz Kujawa, Ryszard Stepien, Rafal Kasztelanic, Andrzej Burgs, Ryszard Buczynski

Summary: We report the development of a 3D printing process for producing soft glass optical fibers. The process involves direct printing using a miniaturized crucible and depositing straight horizontally-oriented lines to replace traditional assembly techniques. Experimental results demonstrate good performance of the printed photonic crystal fiber preform.

ADDITIVE MANUFACTURING (2024)

Article Engineering, Manufacturing

Antioxidant films based on poly(lactic acid) incorporated with crude extract from Malpighia emarginata DC pomace for use in food packaging

Esther Emily Silva Freitas, Euder Reis Dias, Mara Marcia Sampaio Albuquerque, Ilka Borges Biondi, Carla Rodrigues Cardoso Branco, Renato Souza Cruz, Alexsandro Branco, Geany Peruch Camilloto

Summary: The aim of this study was to develop poly(lactic acid) (PLA)-based films with antioxidant activity by incorporating Malpighia emarginata DC pomace extract (MEPE). The results showed that MEPE exhibited good antioxidant activity and improved the antioxidant properties of the films. Despite changes in the physical properties of the films, they have potential for application as active food packaging.

PACKAGING TECHNOLOGY AND SCIENCE (2024)

Article Engineering, Multidisciplinary

Achieving high replicability for electrochemical machining via the stamp flushing method in stationary electrolyte

Xiaoming Duan, Xiaodong Yang, Masanori Kunieda

Summary: This study optimized and investigated the stamp-flushing method, achieving high replicability in ECM. By narrowing the frontal gap width and using a stationary electrolyte, bubbles and sludges can be uniformly removed, improving machining accuracy.

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY (2024)

Article Engineering, Multidisciplinary

Implementation and displacement self-sensing of a 4-DOF piezoelectric micromanipulator

Li Yu, Yu-Guo Cui, Yi-Ling Yang, Zhi-Wen Xiong, Jian-Qiang Ma, Guo-Ping Li, Jun-Qiang Lou

Summary: This paper presents the development and self-sensing displacement of a new four degrees-of-freedom piezoelectric micromanipulator. The micromanipulator offers improved operational flexibility and avoids the need for external sensors through the self-sensing method. Finite element analysis is used to optimize the geometric parameters and a displacement self-sensing method based on charge integration is proposed. Experimental results show good agreement between the self-sensing method and laser sensors. In addition, an application for micro-shaft assembly is demonstrated.

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY (2024)

Review Engineering, Industrial

Supply chain coopetition: A review of structures, mechanisms and dynamics

Korina Katsaliaki, Sameer Kumar, Vasilis Loulos

Summary: This research conducts a systematic literature review (SLR) and content analysis on Supply Chain Coopetition (SCC) through the PRISMA framework. It examines the theory of coopetition and organizational relationships in intra-firm and inter-firm supply chains, focusing on collaboration between rival manufacturers. The study identifies structures and mechanisms of coopetition, such as buyer-supplier coopetition, supply networks coopetition, and production and distribution/logistics coopetition. It provides a holistic approach to SCC management practices and serves as a guide for future research.

INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS (2024)

Article Engineering, Multidisciplinary

Macro-electrolyte jet machining of TC4 titanium alloy using a rear-end tilt tool

Liang Xue, Ningsong Qu

Summary: This study focuses on the key issues of improving material removal rate and surface quality in macro-electrolyte jet machining. By introducing a novel tool with the rear-end tilted, the current density of the workpiece surface can be increased, leading to improved machining performance. Experimental results show that the tool with a rear-end tilt angle of 15 degrees significantly enhances the material removal rate and reduces surface roughness compared to the standard tool.

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY (2024)

Article Engineering, Manufacturing

Progressive pseudograin damage accumulation model for short fiber-reinforced plastics and its application to fatigue life prediction

Jewook Yang, Jae-Hyuk Choi, Jinhyeok Jang, Hyonwoo Pang, Jeong-Min Cho, Woong-Ryeol Yu

Summary: A progressive pseudograin damage accumulation (PPDA) model is proposed to predict the fatigue life of short fiber-reinforced plastics (SFRPs). The model combines the viscoelastic-viscoplastic (VEVP) two-step homogenization theory and Chaboche fatigue damage model. Each representative volume element (RVE) of SFRPs is decomposed into pseudograins, and the fatigue life of each pseudograin is predicted using a master S-N curve. The overall failure of RVE is predicted by a PPDA model, which takes into account the stress concentration of the living pseudograins and results in non-linear fatigue damage evolution. The PPDA model is implemented into ABAQUS, and the predicted fatigue lifetime agrees well with experimental data.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Manufacturing

MOF derived NiFe@C composites with controllable multi-dimensional microstructures for broadband microwave absorption

Bo Liu, Biao Liang, Junjie Xiao, Mengfei Feng, Hui Cheng, Yuan Li, Yi Cheng, Kaifu Zhang

Summary: Metal-organic framework (MOF) derivatives have been found to be potential microwave absorbing materials (MAMs) due to their high porosity, abundant surface sites, and tunable constituents. This paper proposes an efficient microstructure controllable strategy for synthesizing thin-thickness broadband MAMs called NiFe@C. By controlling the supersaturation of precursors, different microstructures with specific absorption capabilities were obtained. This work provides a facile direction for designing thin thickness MAMs with broadband microwave absorption capability.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Industrial

A robust optimization approach for inventory management with limited-time discounts and service-level requirement under demand uncertainty

Yimeng Sun, Ruozhen Qiu, Minghe Sun

Summary: This study considers a multi-period inventory management problem for a retailer offering limited-time discounts and having a joint service-level requirement under demand uncertainty. It proposes a double-layer iterative approach to solve the problem and maximize total profit while balancing the service level using a posteriori method and an affinely adjustable robust chance-constrained model.

INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS (2024)

Article Engineering, Manufacturing

Temperature-dependent cutting physics in orthogonal cutting of carbon fibre reinforced thermoplastic (CFRTP) composite

Jia Ge, Wei Tan, Shahzad Ahmad, Brian G. Falzon, Giuseppe Catalanotti, Colm Higgins, Yan Jin, Dan Sun

Summary: The global commitment to reducing carbon emissions has led to the use of sustainable carbon-fibre-reinforced thermoplastic composites (CFRTPs). When machining CFRTPs, challenges arise due to their ductile-brittle composition and sensitivity to high temperatures. This study conducted temperature-controlled cutting experiments to investigate the temperature-dependent cutting physics of CFRTPs and analyzed the microstructural morphology and damage using advanced microscopy. The experimental results were further explained using a finite element analysis model considering thermal softening.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Multidisciplinary

An approach for optimal tolerance allocation of five-axis machine tools by simultaneously considering volumetric error and processing simplicity index

Haohao Tao, Tongjie Li, Feng Chen, Jinwei Fan, Ri Pan

Summary: In this paper, a novel OTA method is proposed that considers the relationship between tolerance of machine tools' key parts and volumetric error. A volumetric error prediction model is established based on the bridge between geometric error and tolerance. Additionally, a Processing Simplicity Index (PSI) is introduced to replace manufacturing cost and a tolerance-PSI model is established. An OTA model is formulated to minimize volumetric error and maximize PSI. The feasibility and effectiveness of the method are validated through simulations and experiments.

PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY (2024)

Article Engineering, Manufacturing

Understanding the static performance of composite helical springs with braided nested structures

Ling Chen, Joel Chong, Qian Jiang, Liwei Wu, Youhong Tang

Summary: A novel composite helical spring with a braided nested structure (BNCHS) is proposed in this study, which shows significantly improved static performance compared to steel.

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING (2024)

Article Engineering, Industrial

Alliance formation between a platform retailer and competing manufacturers in sharing consumer data for product development

Hiroshi Matsuhisa, Nobuo Matsubayashi

Summary: This study investigates the formation of an alliance between competing manufacturers and a monopolistic platform retailer, and analyzes the impact of the degree of differentiation among manufacturers on the formation of the alliance and the profitability of the retailer.

INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS (2024)