工业工程最新文献

{"title":"Research on multi-view collaborative detection system for UAV swarms based on Pix2Pix framework and BAM attention mechanism","authors":"Yan Ding,&nbsp;Qingxin Cao,&nbsp;Bozhi Zhang,&nbsp;Peilin Li,&nbsp;Zhongjiao Shi","doi":"10.1016/j.dt.2024.11.002","DOIUrl":"10.1016/j.dt.2024.11.002","url":null,"abstract":"<div><div>Drone swarm systems, equipped with photoelectric imaging and intelligent target perception, are essential for reconnaissance and strike missions in complex and high-risk environments. They excel in information sharing, anti-jamming capabilities, and combat performance, making them critical for future warfare. However, varied perspectives in collaborative combat scenarios pose challenges to object detection, hindering traditional detection algorithms and reducing accuracy. Limited angle-prior data and sparse samples further complicate detection. This paper presents the Multi-View Collaborative Detection System, which tackles the challenges of multi-view object detection in collaborative combat scenarios. The system is designed to enhance multi-view image generation and detection algorithms, thereby improving the accuracy and efficiency of object detection across varying perspectives. First, an observation model for three-dimensional targets through line-of-sight angle transformation is constructed, and a multi-view image generation algorithm based on the Pix2Pix network is designed. For object detection, YOLOX is utilized, and a deep feature extraction network, BA-RepCSPDarknet, is developed to address challenges related to small target scale and feature extraction challenges. Additionally, a feature fusion network NS-PAFPN is developed to mitigate the issue of deep feature map information loss in UAV images. A visual attention module (BAM) is employed to manage appearance differences under varying angles, while a feature mapping module (DFM) prevents fine-grained feature loss. These advancements lead to the development of BA-YOLOX, a multi-view object detection network model suitable for drone platforms, enhancing accuracy and effectively targeting small objects.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 213-226"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on the protection mechanism of methane explosion in underground space by flexible construction","authors":"Xianqi Duan ,&nbsp;Yulong Duan ,&nbsp;Zishuang Zhang ,&nbsp;Jun Long ,&nbsp;Yaqiao Yang ,&nbsp;Rui Lang","doi":"10.1016/j.dt.2024.12.011","DOIUrl":"10.1016/j.dt.2024.12.011","url":null,"abstract":"<div><div>Urban growth has promoted the use of underground spaces, where explosion accidents can be catastrophic. In this study, we investigated the effect of placing flexible construction in front of rigid obstacles on methane explosion protection by using an experimental platform and adjusting the blockage rate and spacing of the obstacles. It aims to reduce the risk of gas explosions in urban underground spaces. The results of the study show that the flame propagation peak speed and peak overpressure are reduced with the decrease in the blocking rate of the flexible obstacle when the blocking rate of the flexible obstacle is less than or equal to the blocking rate of the rigid obstacle, with the decrease in the spacing, the better the protection effect of the methane explosion. When the blockage rate of the flexible obstacle is greater than the blockage rate of the rigid obstacle and spacing is less than the height of the flexible obstacle, rigid and flexible obstacles are connected as a whole, increasing the strength of the explosion. This study can provide a theoretical basis and scientific guidance for optimizing rigid and flexible object hybrid layouts and methane explosion protection technology in urban underground spaces.</div></div>","PeriodicalId":58209,"journal":{"name":"Defence Technology(防务技术)","volume":"46 ","pages":"Pages 169-183"},"PeriodicalIF":5.0,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829880","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Friction and Wear Characteristics of Micro-Arc Oxidation Coating on Ti6Al4V Alloy—A Review","authors":"Zhangyue Qin,&nbsp;Xiaogang Zhang,&nbsp;Yali Zhang,&nbsp;Yong Luo,&nbsp;Zhongmin Jin","doi":"10.1049/bsb2.70000","DOIUrl":"https://doi.org/10.1049/bsb2.70000","url":null,"abstract":"<p>Ti6Al4V alloy is widely used in artificial joints, artificial bones, and dental implants due to its elastic modulus similar to that of bone, good biocompatibility and non-cytotoxicity, low density, and excellent fatigue resistance. However, its utility is constrained by the low surface hardness and inadequate wear resistance. Micro-arc oxidation (MAO) technology emerges as a surface modification method characterised by a straightforward process and superior processing efficacy, making it particularly favoured in enhancing the wear resistance of Ti6Al4V. This paper commenced by elucidating the fundamental principles of micro-arc oxidation. Subsequently, it examined the impacts of crucial parameters such as electrolyte type, concentration, processing voltage, current, time, and electrolyte additives on the friction and wear properties of Ti6Al4V alloy MAO coatings, proposing three mechanisms for optimising wear resistance. The primary strategies for augmenting the microhardness and wear resistance of Ti6Al4V alloy MAO coatings involved pore reduction even sealing, lubrication enhancement, and hard compound generation. Following this, the article synthesised the friction and wear attributes of MAO coatings in conjunction with diverse modification techniques, alongside a review of fretting wear characteristics of Ti6Al4V alloy MAO coatings. Lastly, conclusions and prospects were presented to furnish a foundation for future exploration into the wear resistance of Ti6Al4V alloy MAO coatings in scholarly endeavours.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143726789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fresh tire wear particles from moving vehicles: Dispersion dynamics, exposure, and prevention strategy","authors":"Yiwei Xu ,&nbsp;Licheng Wang ,&nbsp;Ruilin Wang ,&nbsp;Weiqi Jiang ,&nbsp;Longfei Du ,&nbsp;Haibo Huang ,&nbsp;Liwu Zhang ,&nbsp;Yan Ding","doi":"10.1016/j.emcon.2025.100503","DOIUrl":"10.1016/j.emcon.2025.100503","url":null,"abstract":"<div><div>Tire Wear Particles (TWPs) have emerged as a significant source of non-exhaust emissions, posing potential exposure risks due to increased vehicle ownership and the advent of new energy vehicles. However, the dispersion and flow dynamics of fresh TWPs remain largely unexplored. Here, we used a finite element aerodynamic simulation model to investigate the distribution of fresh TWPs from a moving vehicle and to assess human respiratory exposure near the vehicle. In addition, actual on-road particle level measurements were performed to qualitatively validate the results obtained from our model while developing a laboratory-scale emission reduction solution. Conservative data show that fresh TWPs (of 0.1–10 μm diameter) disperse up to 3.2 m wide and 2.2 m high, with minimal influence of particle size. At 1–2 m from the side of the vehicle driven at 60 km/h, the maximum concentration was found at a height of 0.8 m, reaching 5.0 μg/m3, demonstrating a significant exposure of children and adolescents. The emission reduction solution designed to mitigate the exposure risk (i.e., a collection channel mounted near the wheel cover) was shown to effectively reduce fresh TWP emissions, achieving a capture rate of &gt;40 % at high speeds. Overall, the results obtained underscore the potential health issues associated with TWPs in urban areas, but also the ability to reduce exposure, provided that appropriate mitigation strategies are adopted.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 3","pages":"Article 100503"},"PeriodicalIF":5.3,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cover Image, Volume 5, Number 1, March 2025","authors":"","doi":"10.1002/msd2.70008","DOIUrl":"https://doi.org/10.1002/msd2.70008","url":null,"abstract":"<p><b>Cover Caption</b>: Active vibration control in MIMO systems is a critical research area addressing the complexities of managing vibrations in various engineering applications. Using FEM, piezoelectric theory and FSDT, dynamic response analysis and active vibration control of smart FGM composite plate with FGPM surface actuators and sensors are introduced. To analyze the control efficiency of FGPM sensors and actuators on the FGM host structure, the LQR controller is utilized. It is emphasized that active vibration control of FGM plates can be performed effectively with the proper selection of FGPM sensors and actuators and their accurate distribution on the plate.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"5 1","pages":"i"},"PeriodicalIF":3.4,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Urinary exposure level of emerging chemicals in Chinese pregnant women and their associations with oxidative stress","authors":"Henglin Zhang ,&nbsp;Yuxian Liu ,&nbsp;Yanan Zhao ,&nbsp;Jiye Zhang ,&nbsp;Luhan Yang ,&nbsp;Guanglan Zhang ,&nbsp;Yanpeng Cai ,&nbsp;Lan Yang ,&nbsp;Jianya Xi ,&nbsp;Ziliang Wang ,&nbsp;Hong Liang ,&nbsp;Maohua Miao ,&nbsp;Tao Zhang ,&nbsp;Jingchuan Xue","doi":"10.1016/j.emcon.2025.100502","DOIUrl":"10.1016/j.emcon.2025.100502","url":null,"abstract":"<div><div>Emerging chemicals (ECs), including parabens, bisphenols, bisphenol diglycidyl ethers, N,N′-substituted p-phenylenediamines, and benzotriazoles/benzothiazoles (BTH/BTRs), are widely used in industrial and consumer products. This study aimed to determine the urinary concentrations of 33 ECs and three oxidative stress biomarkers in pregnant women from a large birth cohort in Jiashan, China. Among the detected compounds, methyl paraben (MeP), bisphenol A (BPA), bisphenol A bis(2,3-dihydroxypropyl) glycidyl ether (BADGE·2H₂O), N-isopropyl-N′-phenyl-1,4-phenylenediamine quinone (IPPDQ), and 1H-benzotriazole (1-H-BTR) were the most prevalent, with median concentrations ranging from 0.51 to 9.02 ng/mL. Notably, BTH/BTRs exhibited the highest exposure levels, approximately 4–16 times greater than those of other ECs. Most ECs showed elevated concentrations in pregnant women who were exposed to secondhand smoke prior to pregnancy. After model analysis, we found that mixtures of ECs were positively associated with both 8-hydroxy-2′-deoxyguanosine (8-OHdG) and 15(R)-prostaglandin F_2α (15-PGF_2α), while a negative trend was observed between ECs and 8-iso-prostaglandin F_2α (8-PGF_2α). Specifically, urinary benzyl paraben (BzP), BPA, bisphenol S (BPS), N-(1,3-dimethylbutyl)-N′-phenyl-1,4-phenylenediamine quinone (6PPDQ), IPPDQ, 2(3H)-benzothiazole (2-OH-BTH), and 2-methylthio-benzothiazole (2-Me-S-BTH) or 1-H-BTR were significantly (<em>p</em> &lt; 0.05) associated with 8-OHdG. MeP, 6PPDQ, and 2-Me-S-BTH were linked to 15-PGF_2α, while only bisphenol A (2,3-dihydroxypropyl) glycidyl ether (BADGE·H₂O) showed a significant positive association with 8-PGF_2α. This study provides a comprehensive evaluation of the exposure characteristics of ECs and their associations with oxidative stress biomarkers in pregnant women, offering new insights into the health risks associated with ECs exposure during critical periods of pregnancy.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100502"},"PeriodicalIF":5.3,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Recent advances and practical challenges in the research of decellularized matrices for the fabrication of tiny-diameter artificial arteries","authors":"Yan Liu,&nbsp;Can Cheng,&nbsp;Jiaqi Xing,&nbsp;Zhaoxi Deng,&nbsp;Xu Peng","doi":"10.1186/s42825-025-00192-y","DOIUrl":"10.1186/s42825-025-00192-y","url":null,"abstract":"<div><p>Despite advances in synthetic vascular grafts, replicating the dynamic biological functions of native microvasculature remains a critical challenge in cardiovascular tissue engineering. While polymer-based conduits offer scalability and dimensional versatility, the inherent bioinert nature leads to high failure rates in &lt; 6 mm diameter applications due to thrombotic complications and mechanical mismatch with host tissue. Decellularized matrices (dECM) scaffolds emerge as a biologically strategic alternative, preserving crucial vascular basement membrane components and biomechanical cues through collagen/elastin retention. The present review systematically elaborates the research advancements, critical determinants, and practical challenges in utilizing dECM for tiny-diameter artificial vessels (inner diameter &lt; 3 mm), while proposing three forward-looking solutions to address clinical translation barriers: (1) matrix optimization strategies through diameter-specific compliance matching and elastin reconstitution; (2) sterilization and preservation protocols preserving structural integrity with controlled immunogenicity; (3) immunomodulatory engineering via macrophage polarization regulation. The proposed methodologies establish innovative avenues for the engineering and clinical transplantation of tiny-diameter artificial vessels.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00192-y","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unravelling the ecological ramifications of biodegradable microplastics in soil environment: A systematic review","authors":"U. Umasankar ,&nbsp;P.C. Sabumon","doi":"10.1016/j.emcon.2025.100504","DOIUrl":"10.1016/j.emcon.2025.100504","url":null,"abstract":"<div><div>Plastic pollution, especially microplastics (MPs), poses significant environmental challenges, with biodegradable plastics (BPs) often presented as sustainable alternatives. However, incomplete degradation of BPs in soil environment leads to the creation of biodegradable microplastics (BMPs), whose impacts remain inadequately understood. This systematic review synthesizes findings from 85 publications to assess the effects of BMPs on soil ecosystems, encompassing physical, chemical, and biological properties. BMPs influence soil texture, porosity, nutrient cycling, microbial diversity, and plant growth, with varying impacts depending on polymer type, concentration, and soil conditions. While BMPs can enhance soil organic matter and microbial activity at low concentrations, higher concentrations often alter nutrient availability and soil stability. Soil biota shows differential responses to BMPs, with potential implications for nutrient cycling and soil ecosystem functioning. Contradictory research findings underscore the need for long-term, field-based studies under varied environmental conditions. The insights from this review contribute to a deeper understanding of the ecological ramifications of BMPs in soil ecosystems, highlighting critical research gaps, advocating for multidisciplinary approaches to comprehensively evaluate impacts of BMPs.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 2","pages":"Article 100504"},"PeriodicalIF":5.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tribological Properties of Ti-Based Nanofiber-CS Composite Flexible Coatings","authors":"Zhenyu Yang,&nbsp;Weili Jiang,&nbsp;Hui Yan,&nbsp;Jingkang Zhang,&nbsp;Jinbang Li,&nbsp;Yuan Jin,&nbsp;Guangyong Li,&nbsp;Jianke Du,&nbsp;Haitao Fan,&nbsp;Licheng Hua","doi":"10.1049/bsb2.70001","DOIUrl":"https://doi.org/10.1049/bsb2.70001","url":null,"abstract":"<p>The development of metal implants as permanent replacements for hard tissue involves careful consideration of both interfacial bone integration for load-bearing support and interfacial energy dissipation to prevent bone resorption due to excess load. Currently, most implants are typically limited to excelling in only one of these functions. A promising approach to achieving a synergistic effect of interfacial bone integration and energy dissipation is the design of a nanofiber-chitosan (nanofiber-CS) composite flexible coating on titanium alloy surfaces. However, the tribological properties of this flexible coating remain uncertain. In this study, the authors evaluated the tribological properties of pure titanium substrates and the nanofiber-cs composite flexible coating in both dry and wet environments. The results demonstrated that while the nanofiber-cs composite flexible coating reduced surface wear in dry conditions, it increased surface wear in wet environments. This indicates that there is potential for improvement in the tribological characteristics of the nanofiber-cs composite flexible coating, particularly in wet conditions. This research offers theoretical and technical insights into the design of flexible coatings for implant surfaces from a tribological standpoint.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multi-State Meshing-Collision Dynamics Modeling and Analysis of High-Contact-Ratio Spur Gear System Considering Tooth Breakage","authors":"Jianfei Shi,&nbsp;Pengfei Qi,&nbsp;Chuang Han,&nbsp;Chao Ye,&nbsp;Wuyin Jin","doi":"10.1002/msd2.70000","DOIUrl":"https://doi.org/10.1002/msd2.70000","url":null,"abstract":"<p>Tooth breakage is a common issue in geared systems. The high-contact-ratio spur gear system (HCRSG) maintains continuous transmission despite tooth breakage, but experiences increased impact vibration. In aviation, even if the gear teeth break, the gear's transmission cannot be stopped immediately. Therefore, studying gear system dynamics with tooth breakage is crucial for assessing the reliability of mechanical equipment. This study treats the tooth-back contact induced by backlash as the tooth-back collision and presents the multi-state meshing-collision pattern of HCRSG with one tooth breakage (OTB), including triple-tooth, double-tooth, single-tooth meshes, disengagement, and tooth-back collision. Time-varying meshing stiffness and load distribution coefficients of HCRSG with OTB are calculated. Then a multi-state meshing-collision nonlinear dynamic model of HCRSG with OTB is established. The meshing forces of HCRSG with OTB and without OTB are calculated and compared to examine the effect of tooth breakage. The multi-state meshing-collision nonlinear dynamics of HCRSG with OTB are studied via bifurcation diagram, phase portraits, and Poincaré maps by changing the transmission error amplitude. The results show that 3-2-3-2-3 meshing pattern of HCRSG is shifted to 2-1-2-1-2 meshing pattern due to tooth breakage. The effect of tooth breakage on the meshing force and dynamic behavior significantly depends on teeth disengagement or tooth-back collision. Tooth breakage greatly affects the bifurcation and chaos characteristics of multistate meshing-collision behavior of HCRSG. This study creates a framework to predict and assess the dynamics of gear transmission systems with tooth breakage in extreme aviation and aerospace environments.</p>","PeriodicalId":60486,"journal":{"name":"国际机械系统动力学学报(英文)","volume":"5 1","pages":"160-175"},"PeriodicalIF":3.4,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/msd2.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}