Article
Forestry
Maciej Sydor, Zbigniew Potok, Marta Pedzik, Milos Hitka, Tomasz Rogozinski
Summary: Screw withdrawal resistance (SWR) is a measure of the strength of furniture joints made with wood screws, which is affected by factors such as screw size, embedding depth, pilot hole diameter, and material properties of the furniture components. This study investigated the previously unexplored factor of feed rate during pilot hole drilling and its influence on SWR. The results showed that a higher feed rate significantly decreased SWR for all tested particleboards, due to decreased precision in the internal surface of the pilot hole.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2023)
Article
Engineering, Mechanical
Andrii Hrechuk, Volodymyr Bushlya
Summary: Flank wear VBmax is still one of the most important and commonly used metrics for measuring tool wear. It is used to characterize the wear rate, machinability, and surface quality of materials. While VBmax measures the size of wear scar, the shape of tool wear is less utilized but still applicable for characterization. This study develops an Image Processing solution and applies Delaunay triangulation and implenarity parameter to characterize the shape of the wear scar.
Article
Engineering, Aerospace
Filippo Valoriani, Marco Esposito, Marco Gherlone
Summary: This paper compares two approaches to shape sensing, namely Ko's Displacement Theory and the Modal Method, and investigates their accuracy in reconstructing the deflection and twist angle of a half-wing structure through numerical analysis. The results show that the Modal Method outperforms Ko's Displacement Theory in accuracy, especially in evaluating the deflection field, and can achieve excellent reconstructed deflections with a reduced number of sensors.
Article
Agricultural Engineering
Xinying Luo, Yihu Hu, Zicheng Gao, Hao Guo, Yang Su
Summary: In this paper, a method is proposed to solve the problems of animal body measurement by fitting statistical shape models to livestock point cloud data and extracting body measurements from reconstructed meshes. The method addresses the issues of missing point cloud data and inconsistency caused by livestock movement. Experimental results on cattle and pigs demonstrate the accuracy of the method.
BIOSYSTEMS ENGINEERING
(2023)
Article
Agriculture, Dairy & Animal Science
Darija Lemic, Helena Viric Gasparic, Patricija Majcenic, Ivana Pajac Zivkovic, Mario Bjelis, Manuel J. Suazo, Margarita Correa, Jordan Hernandez, Hugo A. Benitez
Summary: This study aimed to investigate the morphological variability of the box tree moth from Croatia and assess its invasive characteristics, flight potential, and risk of further spread. The results revealed significant differences in wing shapes between populations from different geographical locations, as well as subtle wing shape sexual dimorphism.
Article
Engineering, Aerospace
Marco Esposito, Marco Gherlone, Pier Marzocca
Summary: The recent development of the Structural Health Monitoring (SHM) framework has led to the simultaneous development of tools fundamentals. Shape sensing methods and loads identification have become crucial tools for monitoring aerospace structures. This paper proposes an integrated approach to simultaneously perform loads identification and shape sensing from discrete strain measurements, based on a two-step process.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Computer Science, Interdisciplinary Applications
Biao Mei, Yongtai Yang, Weidong Zhu
Summary: This study developed a pose adjustment system enhanced by integrating physical simulation for the wing-box assembly of a large aircraft. The research first demonstrated the base of the digital pose alignment of a large aircraft's outer wing panel, and then explored the pose alignment principles of duplex and multiple assembly objects based on the best-fit strategy. The contribution analysis for nonideal pose alignment was also conducted, and the influences of thermal and gravity deformations were discussed. A physical simulation-assisted pose alignment method considering multisource errors was developed. Compared with a conventional digital pose adjustment system driven by the classical best-fit, the enhanced system significantly decreased deviations of the key characteristic points.
JOURNAL OF COMPUTING AND INFORMATION SCIENCE IN ENGINEERING
(2022)
Article
Chemistry, Analytical
Hyein Kim, Soohyun Nam, Eunseok Nam
Summary: This paper proposes a method to predict machining quality in real time using monitoring signals and on-machine measurement results. By investigating the correlation between monitoring signals and measurement results, a machine learning model is constructed to estimate shape errors, implementing a tool offset compensation strategy. Experimental results confirm the effectiveness of the proposed method in achieving uniform machining quality.
Article
Computer Science, Information Systems
Dingqiang Peng, Lantao Yang, Yimin Shao
Summary: The traditional dynamic model neglects the uneven radial stiffness of the shaft hole in the thin-walled box, resulting in deviations in predicting cutting force and surface topography. To address this, a new calculation model for the equivalent radial stiffness is proposed and validated through finite element analysis. A dynamic model of the shaft hole is developed, and experimental studies confirm its accuracy. Additionally, a prediction method for surface topography error is presented and validated. The proposed models and method accurately predict cutting force and surface topography error, providing a theoretical basis for machining error control and process optimization in fine boring.
Article
Engineering, Multidisciplinary
Yunfei Fan, Jie Huang, Yilian Zhang, Nuodi Huang, Qingzhen Bi, Yuhan Wang
Summary: This study presents a novel compensation method using reference holes to reduce hole position error and initial normal deviation in aerospace drilling. The hole-pose error is defined using quaternions, and approach for accurately measuring the pose of the reference hole and calibrating the coordinate system is proposed. The position error and initial normal error are estimated using bilinear interpolation based on the error similarity on the two-dimensional manifold.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2023)
Article
Geochemistry & Geophysics
Zhijie Zheng, Jun Pan, Zhikang Ni, Cheng Shi, Diankun Zhang, Xiaojun Liu, Guangyou Fang
Summary: This article discusses a deep learning-based method for recovering human pose and shape from TWRI images. The method utilizes a teacher-student learning pipeline and multitasking learning to achieve human recovery in scenarios with or without wall occlusion.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2022)
Article
Chemistry, Physical
Zhaolong Li, Ye Dai
Summary: This study investigates the effect of mask electrochemical machining on the heat dissipation performance and service life of aero-engines. Experimental results indicate that mask electrochemical machining can improve both machining efficiency and accuracy.
Article
Automation & Control Systems
Guangshuai Liu, Yuzhou Yang, Zuoxin Li, Xurui Li, Wenyu Yi
Summary: Quality inspection of holes is crucial due to the impact of geometrical errors on the functionality and assembly of parts. This paper proposes a new path-planning strategy to improve measurement accuracy and ensure the safety of the working process, by capturing multiple local contours and optimizing the inspection path.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Thermodynamics
Zixin Lin, Wenjie Tian, Dawei Zhang, Weiguo Gao, Lina Wang
Summary: This paper proposes a mapping model considering structural distortion to determine the geometric accuracy design index of CNC machine tools, and accurately estimates the end pose error of the machine tool by analyzing elastic deformations and cutting errors.
ADVANCES IN MECHANICAL ENGINEERING
(2021)
Article
Engineering, Mechanical
Nakash Nazeer, Xuerui Wang, Roger M. Groves
Summary: This study introduces a novel application of using fiber optic sensing technology to estimate the deflectioin of SmartX camber morphing wing demonstrator. The experiment demonstrates the accuracy of deflection estimation in wind tunnel testing using a multi-modal fiber optic sensing approach.
Article
Automation & Control Systems
Haijin Wang, Jie Sun, Jianfeng Li, Laixiao Lu, Nan Li
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2016)
Article
Materials Science, Multidisciplinary
H. Wang, J. Sun, J. Li, W. Li
MATERIALS TECHNOLOGY
(2015)
Article
Engineering, Manufacturing
Haijin Wang, Jie Sun, Dandan Zhang, Kai Guo, Jianfeng Li
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2016)
Article
Automation & Control Systems
Haijin Wang, Huiyue Dong, Yinglin Ke, Jie Sun
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2019)
Article
Materials Science, Composites
Dilmurat Dolkun, Han Wang, Haijin Wang, Yinglin Ke
APPLIED COMPOSITE MATERIALS
(2020)
Article
Mechanics
Weiwei Wang, Han Wang, Haijin Wang, Huiyue Dong, Yinglin Ke
Summary: A new three-dimension RVE model is proposed in this paper to optimize the design of z-pinned reinforced composite material, involving the evolution of microstructures inside the laminate to enhance delamination resistance. The simulation results demonstrate that the model can effectively investigate the effects of z-pinned process parameters on the performance of laminates.
COMPOSITE STRUCTURES
(2021)
Article
Automation & Control Systems
Dilmurat Dolkun, Han Wang, Haijin Wang, Yinglin Ke
Summary: The paper introduces a fast and reliable thermal cure profile design method for autoclave curing process, considering the actual curing condition and thermal behavior of the mold. By establishing a CFD-based simulation model and utilizing unit volume element-based simulation, the proposed method significantly reduces computation time while ensuring accuracy. The optimization combining genetic algorithm and unit volume element method aims to improve temperature uniformity and reduce cure time, benefiting the autoclave curing process for large composite parts manufacturing.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Mechanics
Yu Gao, Xiaowen Song, Huiming Ding, Han Wang, Haijin Wang, Yinglin Ke
Summary: This study conducted experimental and numerical analysis to investigate the impact of different cutting methods at composite grid intersections on compressive failure performance. The results indicated significant reduction in compressive strength, with dominant failure mechanisms being fiber fracture and inter-ply delamination. The numerical simulations aligned well with experimental findings, providing practical insights for design and manufacturing of thick AFP composite grid structures.
COMPOSITE STRUCTURES
(2021)
Article
Materials Science, Composites
Shaohua Fei, Weiwei Wang, Han Wang, Di Yang, Huiming Ding, Haijin Wang, Jiangxiong Li, Yinglin Ke
Summary: This study introduces an ultrasound guided Z-pinning process to enhance the interlaminar performance of composite laminates. Experimental results demonstrate that the use of fine Z-pins can significantly improve the mechanical properties of composites.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Automation & Control Systems
Lan Zhou, Guosheng An, Wensheng Li, Haijin Wang, Wei Li
Summary: This study investigated the mechanical analysis and deformation mechanism of cap formation in the orbital drilling process. A unified plastic limit analysis approach was proposed and solutions were compared using numerical calculation methods based on different yield criteria. Conclusions were drawn about the cap formation mechanism from the perspective of unified plastic limit analysis.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Automation & Control Systems
Mingming Du, Haijin Wang, Huiyue Dong, Yingjie Guo, Yinglin Ke
Summary: This study systematically validated the importance of multi-particle velocities and trajectories in understanding the particle erosion mechanism in abrasive waterjet machining by establishing a whole-stage simulation model, and analyzed the nozzle wear pattern.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING 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
Automation & Control Systems
Mingming Du, Haijin Wang, Huiyue Dong, Yingjie Guo, Yinglin Ke
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2020)
Article
Computer Science, Information Systems
Chang'an Zhou, Kai Guo, Bin Yang, Haijin Wang, Jie Sun, Laixiao Lu