Results 41 to 50 of about 17,478 (257)

Influence of obstacles in coal mine roadways on smoke flow characteristics

Gong-kuang zidonghua
Underground coal mine fires generate smoke that spreads along roadways, and its flow state is easily affected by internal obstacles, forming local smoke stagnation zones, increasing the accumulation risk of toxic gases, and seriously threatening the safe
WANG Binbin, QIU Haisheng, ZHOU Rui
doaj   +1 more source

The motor deficits caused by Parkinson's disease are not able to block adjustments for a safe strategy during obstacle crossing in individuals with moderate disease

Motriz: Revista de Educacao Fisica, 2015
The aim of this study was to verify whether patients with Parkinson's disease (PD) are able to adjust their motor behavior according to restrictions imposed by the task instruction during walking with obstacle crossing.
Vinícius Alota Ignácio Pereira, Fabio Augusto Barbieri, Rodrigo Vitório, Lucas Simieli, Ellen Lirani-Silva, Diego Orcioli-Silva, Lilian Teresa Bucken Gobbi   +6 more
doaj   +1 more source

Emotional Reciprocal Velocity Obstacles for Leader-Following: A Velocity Obstacles-Based Steering Behavior

IEEE Access
The steering behavior of autonomous agents in animation and games aims to form agent movement to navigate around a virtual world. Leader-following behavior is a steering behavior formed by followers who must follow their leader while the leader guides the group to their destination. Followers need to deter themself from crowding their leader as it will
Moch Fachri, Mochamad Hariadi, Supeno Mardi Susiki Nugroho   +2 more
openaire   +2 more sources

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Collision Avoidance Algorithm for USV Based on Rolling Obstacle Classification and Fuzzy Rules

Journal of Marine Science and Engineering, 2021
Dynamic collision avoidance between multiple vessels is a task full of challenges for unmanned surface vehicle (USV) movement, which has high requirements on real-time performance and safety.
Lifei Song, Xiaoqian Shi, Hao Sun, Kaikai Xu, Liang Huang   +4 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Toward Safe Autonomy at Sea: Implementation and Field Validation of COLREGs-Compliant Collision-Avoidance for Unmanned Surface Vessels

Journal of Marine Science and Engineering
The growing adoption of Unmanned Surface Vessels (USVs) in commercial and defense domains raises challenges for safe navigation and strict adherence to the International Regulations for Preventing Collisions at Sea (COLREGs).
Douglas Silva de Lima, Gustavo Alencar Bisinotto, Eduardo Aoun Tannuri   +2 more
doaj   +1 more source

Novel Method of Obstacle Avoidance Planning for Redundant Sliding Manipulators

IEEE Access, 2020
In this paper, a weighted additional deviation velocity on the basis of the gradient projection (GP-WADV) method is proposed to solve obstacle avoidance problems of the redundant manipulator under the condition of known end-effector trajectory.
Jinguo Liu, Yuchuang Tong, Zhaojie Ju, Yuwang Liu   +3 more
doaj   +1 more source

Parameter Variation in Planetary Ball Milling of Titanium Aluminide Powder in XHV‐Adequate Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates the effects of milling parameters, including rotational speed, milling duration, and ball‐to‐powder ratio, on TiAl particle size and morphology in an XHV‐equivalent atmosphere. The creation of oxide‐free surfaces enhances the mechanical properties of green bodies.
Jytte Möckelmann, Armin Piwek, Julius Peddinghaus, Kai Brunotte, Bernd-Arno Behrens   +4 more
wiley   +1 more source