Influence of aging and surface treatments on the fatigue response of L-PBF manufactured steel parts DOI Open Access
Nebojša Bogojević, Snežana Ćirić‐Kostić, Vladimir Sindjelic

и другие.

Advanced Technologies & Materials, Год журнала: 2024, Номер 49(2), С. 37 - 41

Опубликована: Сен. 16, 2024

The processes of metal additive manufacturing (AM) offer advantages over traditional technologies, especially when it comes to producing parts with complex designs. Thanks the flexibility in and relatively high speed part production, AM technologies can now be found across various industries. A better understanding mechanical properties fatigue behavior is crucial for their successful integration different sectors. Numerous factors play a key role influencing produced through AM. This study investigates impact heat treatment surface on components made from marginal steel (MS1) stainless (PH1). After subjecting MS1 PH1 treatment, expected that limits will increase compared original state. Additionally, experimental findings show not only do treatments significantly affect strength used alone, but also changing order subsequent either enhance or diminish strength.

Язык: Английский

Design and Position Control of a Bionic Joint Actuated by Shape Memory Alloy Wires DOI Creative Commons
Yida Zhu,

Zhikun Jia,

Xiaojie Niu

и другие.

Biomimetics, Год журнала: 2024, Номер 9(4), С. 210 - 210

Опубликована: Март 30, 2024

Bionic joints are crucial for robotic motion and a hot topic in robotics research. Among various actuators joints, shape memory alloys (SMAs) have attracted significant interest due to their similarity natural muscles. SMA exhibits the effect (SME) based on martensite-to-austenite transformation its inverse, which allows force displacement output through low-voltage heating. However, one of main challenges with is limited axial stroke. In this article, bionic joint wires differential pulley set structure was proposed. The stroke converted into rotational by amplification set, enabling rotate sufficient angle. We modeled designed proportional–integral (PI) controller. demonstrated that exhibited good position control performance, achieving rotation angle range −30° 30°. proposed joint, utilizing offers an innovative solution enhancing actuated joints.

Язык: Английский

Процитировано

3
An improved sand cat swarm optimization with lens opposition-based learning and sparrow search algorithm DOI Creative Commons
Yanguang Cai,

Changle Guo,

Xiang Chen

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Сен. 5, 2024

Язык: Английский

Процитировано

2
Multi-Modal Enhancement Transformer Network for Skeleton-Based Human Interaction Recognition DOI Creative Commons
Qianshuo Hu, Haijun Liu

Biomimetics, Год журнала: 2024, Номер 9(3), С. 123 - 123

Опубликована: Фев. 20, 2024

Skeleton-based human interaction recognition is a challenging task in the field of vision and image processing. Graph Convolutional Networks (GCNs) achieved remarkable performance by modeling skeleton as topology. However, existing GCN-based methods have two problems: (1) Existing frameworks cannot effectively take advantage complementary features different skeletal modalities. There no information transfer channel between various specific (2) Limited structure topology, it hard to capture learn about two-person interactions. To solve these problems, inspired visual neural network, we propose multi-modal enhancement transformer (ME-Former) network for skeleton-based recognition. ME-Former includes module (ME) context progressive fusion block (CPF). More specifically, each ME consists multi-head cross-modal attention (MH-CA) hypergraph self-attention (TH-SA), which are responsible enhancing modality from other modalities spatial dependencies joints using modality, respectively. In addition, topology representation. The TH-SA can embed their structural into better interaction. CPF capable progressively transforming low-level higher-order global contexts, making process more efficient. Extensive experiments on benchmark NTU-RGB+D 60 120 datasets consistently verify effectiveness our proposed outperforming state-of-the-art methods.

Язык: Английский

Процитировано

0
A Four-Quadrant Load Matching Method to Balance Power and Performance for Hydraulic Valve-Controlled Servo Actuators DOI
Qixin Zhu, Bin Yu, Kaixian Ba

и другие.

Опубликована: Янв. 1, 2024

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

Язык: Английский

Процитировано

0
Influence of aging and surface treatments on the fatigue response of L-PBF manufactured steel parts DOI Open Access
Nebojša Bogojević, Snežana Ćirić‐Kostić, Vladimir Sindjelic

и другие.

Advanced Technologies & Materials, Год журнала: 2024, Номер 49(2), С. 37 - 41

Опубликована: Сен. 16, 2024

The processes of metal additive manufacturing (AM) offer advantages over traditional technologies, especially when it comes to producing parts with complex designs. Thanks the flexibility in and relatively high speed part production, AM technologies can now be found across various industries. A better understanding mechanical properties fatigue behavior is crucial for their successful integration different sectors. Numerous factors play a key role influencing produced through AM. This study investigates impact heat treatment surface on components made from marginal steel (MS1) stainless (PH1). After subjecting MS1 PH1 treatment, expected that limits will increase compared original state. Additionally, experimental findings show not only do treatments significantly affect strength used alone, but also changing order subsequent either enhance or diminish strength.

Язык: Английский

Процитировано

0