Results 101 to 110 of about 2,834 (243)

Research on the Weldability and Service Performance of 7075 Aluminum Alloy Welding Wire Prepared by Spray Forming–Extrusion–Drawing

open access: yesMetals
A large number of MIG welding tests were carried out on a 3 mm thick 7075 aluminum alloy plate prepared by the self-developed jet forming–extrusion–drawing process of 7075 high-strength aluminum alloy welding wire, and the welding process of the welding ...
Chunkai Zhou, Xiaoping Li, Gao Hua
doaj   +1 more source

Influence of porosity and architecture on the mechanical and acoustic properties of FFF‐printed PLA structures

open access: yesPolymer International, EarlyView.
The influence of porosity and infill pattern (architecture) on the mechanical and acoustic properties of FFF‐printed PLA is investigated. Ultrasonic analysis highlights the dominant role of interlayer porosity, revealing anisotropic behavior and a transition in elastic properties with increasing porosity.
Makki Ajmi   +4 more
wiley   +1 more source

塑料门窗三点直线布置热熔焊接机的设计与研究

open access: yesJixie chuandong, 2011
To enhance the quality,the yield and the universal application of plastic door and window,an advanced hot-melt welding machine of three-position linear arrangement for plastic door and window is designed based on new principles.The overall program ...
刘有余   +4 more
doaj  

Reduction in Porosity in GMAW-P Welds of CP780 Galvanized Steel with ER70S-3 Electrode Using the Taguchi Methodology

open access: yesMetals
In this study, the theoretical welding parameters influencing porosity formation were examined with the aim of reducing or minimizing porosity levels. An experimental design was implemented using the Taguchi methodology for data analysis, resulting in an
Maleni García-Gómez   +5 more
doaj   +1 more source

Improving Welding Behavior of ETPU Bead Foams by Surface Modification with Plasticizers

open access: yesJournal of Polymer Science, EarlyView.
Tributyl citrate (TBC) and stearic acid (SA) modify ETPU beads through different diffusion mechanisms. TBC diffuses the bead structure directly after coating, whereas SA remains on the surface until melting and subsequent diffusion during heating. The resulting plasticization improves bead fusion, allowing RF processing at reduced temperature and ...
Alexander Himsel   +4 more
wiley   +1 more source

Parameter-determined interface morphologies and properties of explosively-welded Cu–Ni–Si–Cr alloy composites

open access: yesJournal of Materials Research and Technology
Six Cu–Ni–Si–Cr alloy composites are prepared by explosive welding with the designed parameters. Wavy interface containing the melted pockets and shrinkage cracks is always observed, refining the grains to just several micrometers with the localized ...
Yake Wu   +6 more
doaj   +1 more source

Portfolio‐Level Reliability Analysis of a Multi‐Asset System: A Frailty Proportional Intensity Modeling Framework

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT Understanding and modeling the equipment failure behavior is crucial for reducing downtime, optimizing maintenance strategies, and improving operational safety. This challenge becomes particularly critical in industrial contexts involving multi‐asset portfolios, where heterogeneous conditions influence the reliability of individual assets and,
Zeynab Allahkarami   +4 more
wiley   +1 more source

Network Latency Estimation for Telesurgery Using Deep Reinforcement Learning

open access: yesSmartBot, EarlyView.
Overview of the proposed two‐stage deep reinforcement learning framework for network latency prediction in telesurgery. The pipeline includes data collection from simulated catheter navigation sessions (Philippines–Botswana), feature engineering, DQN‐based direction prediction (85.8% accuracy), direction‐to‐value transformation, and value forecasting ...
Bakang Kgopolo   +2 more
wiley   +1 more source

Study on microstructure and properties of pure tantalum TIG joints

open access: yesHanjie xuebao
A study on the microstructure, mechanical properties, and heat treatment process of pure tantalum TIG joints was conducted. Industrial computed tomography (CT), OM, and SEM were used to characterize the microstructure of the joints, and a microhardness ...
Chao YAN   +3 more
doaj   +1 more source

Cell‐Based Micro/Nanorobots: From Living Carriers to Living Therapeutic Specialists

open access: yesSmartBot, EarlyView.
Cell‐based micro/nanorobots integrate evolutionarily acquired biological intelligence with engineered capabilities, offering new opportunities for precision medicine in vivo. However, the complex physiological environments of different organs pose significant challenges to their clinical translation.
Junfeng Wu   +12 more
wiley   +1 more source

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