Results 121 to 130 of about 59,397 (305)

A Soft Robotic Fish With a Dielectric Elastomer Actuator Body and Negative Stiffness Spine

Advanced Robotics Research, EarlyView.
This work introduces a bio‐mimetic soft robotic fish driven by fiber‐reinforced dielectric elastomer actuators integrated as its body. By prestretching this active skin against a flexible spine, a negative stiffness system is created, enabling large‐amplitude bending.
Markus Koenigsdorff, Simon Holzer, Stefania Konstantinidi, Yoan Civet, Yves Perriard   +4 more
wiley   +1 more source

Rozkład parć masy formierskiej prasowanej w formie wnękowej

Engineering Transactions, 1990
W artykule zaproponowano model matematyczno-fizyczny rozkładu parć masy formierskiej, prasowanej w formie wnękowej, czyli z modelem odlewniczym. Wychodząc z warunku równowagi sił działających na elementarną warstewkę masy wyprowadzono dwa równania parcia
Stanisław WASZKIEWICZ
doaj  

Data‐Driven Bulldozer Blade Control for Autonomous Terrain Leveling

Advanced Robotics Research, EarlyView.
A simulation‐driven framework for autonomous bulldozer leveling is presented, combining high‐fidelity terramechanics simulation with a neural‐network‐based reduced‐order model. Gradient‐based optimization enables efficient, low‐level blade control that balances leveling quality and operation time.
Harry Zhang, Ganesh Arivoli, Huzaifa Unjhawala, Luning Bakke, Radu Serban, Dan Negrut   +5 more
wiley   +1 more source

3D‐Printing Aided Rapid Prototyping of Pretensioned Tensegrity Structures for Robotic Applications

Advanced Robotics Research, EarlyView.
Printing, injection molding, and assembly (PMA) is a method for rapid prototyping mesoscale, topologically complex, and tensioned tensegrity structures. In combination with PMA method, two mold design strategies: modular mold and compact channel layout, enable efficiency and scalability for tensegrity fabrication.
Yi Sun, Jan Petrš, Omar Aloui, Dario Floreano   +3 more
wiley   +1 more source

Systematic Exploration of 3D Concrete Printing Parameters for Conformal Printing on Sloped Surfaces

Advanced Robotics Research, EarlyView.
A conformal slicing algorithm is developed for robotic 3D concrete printing (3DCP) on sloped surfaces as a first step toward printing slab‐on‐grade foundations on uneven terrain. Systematic experiments quantify the effects of nozzle speed, extrusion rate, and toolpath direction on filament dimension and stability.
Paniz Farrokhsiar, Benay Gursoy, Jose Pinto Duarte   +2 more
wiley   +1 more source

Analysis of modern methods of assessing the quality of sand foundry moulds

Metalurgija, 2015
Currently offered devices for the hardness measuring or indices of the mould strength, are presented in the hereby paper. The presented results allow to compare approximately the indications of individual devices of different types.The description of the
K. Smyksy, J. Zych, T. Snopkiewicz
doaj  

Development of a co-cured composite torque shaft for rudder of high speed aircraft [PDF]

, 2008
The Carbon Fibre reinforced Composites are widely used in developing various composite parts of civil and13; military aircraft due to its high specific strength and specific stiffness.
Dharmappa, BL, Karuppannan, D, Rawat, RS, Subba Rao, M   +3 more
core   +1 more source

Improving the Properties of Arthma Sand for Using In the Sand Moulding

Engineering and Technology Journal, 2005
The aim of the present research is to improve properties of Arthma sand through the addition of different materials for using it in sand casting processes. After preparing the master mixture from (Arthma sand, 5% Bentonite, 5% water), then we add different percents ranging between (2-8)% of the added maters which were phenol, phenol with Boric acid ...
openaire   +2 more sources

Climate Change Threatens Micronutrient Density of European Winter Wheat

Advanced Science, EarlyView.
Micronutrients are vital for human health. Wheat is a major staple crop and a significant source of minerals and B‐vitamins. The impact of climate change on their content remains largely unknown. We evaluated micronutrient levels in European winter wheat grown under historical and projected climate conditions. Our findings indicate that future climates
Da Cao, Jennifer Michel, Eline Lorer, Markus Weinmann, Jacques Le Gouis, Claire Léon, Sibille Perrochon, David Alvarez, Vincent Leemans, Iñaki Balanzategui Guijarro, Jordi Moya Laraño, Sara Sánchez Moreno, Symanczik Sarah, Waibel Matthias, Hervé Vanderschuren, Cécile Thonar, Pierre Delaplace, Dominique Van Der Straeten   +17 more
wiley   +1 more source

The ancient Chinese casting techniques [PDF]

China Foundry, 2011
In the course of Chinese civilization, which lasted more than 5,000 years, casting production has made a huge contribution. In this paper, some representative metal castings were presented.
Tan Derui, Lian Haiping
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