Results 61 to 70 of about 322,952 (190)

Development of Vertical Wind Turbine Blades Using 4D Printing of Composites

open access: yesPolymer Composites, Volume 47, Issue 12, Page 10966-10975, 20 June 2026.
Vertical axis wind turbine: White blade: Commercial. Black blade: Composite. ABSTRACT This paper presents the procedure to make vertical wind turbine blades using the technique of 4D printing of composites (4DPC). The blades are made using carbon/epoxy composite materials with a fiber volume fraction of about 60%.
Emad Fakhimi, Suong Van Hoa
wiley   +1 more source

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

open access: yesAdvanced Engineering Materials, Volume 28, Issue 11, 3 June 2026.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek   +5 more
wiley   +1 more source

Morphing Skin: Foams

open access: yes, 2022
S.207-230A morphing skin was developed for adaptive wings with multifinger ribs architecture enabling conformal and differential airfoil camber morphing. The skin consists of aluminum profiles for spanwise stability and low temperature elastomer foam and
Nagel, C., Schorsch, O., Lühring, A.
core   +1 more source

Novel Twist Morphing Aileron and Winglet Design for UAS Control and Performance

open access: yesDrones
This study introduces a novel “twist morphing aileron and winglet” design for the Unmanned Aircraft System UAS-S45. Improving rolling efficiency through twist morphing ailerons and reducing induced drag through twist morphing winglets are the two main ...
Mir Hossein Negahban   +3 more
doaj   +1 more source

The Control Efficiency Analysis of Asymmetry Transmutation forFolding Wing Morphing Aircraft

open access: yesHangkong gongcheng jinzhan, 2018
Folding wing morphing aircraft can alter their shape largely which causes the aerodynamic parameters change significantly. A control scheme that using asymmetric morphing as a control input is proposed in this paper to investigate the control efficiency ...
Xu Xiaowu, Zhang Wei, Zhan Hao
doaj   +1 more source

Highly Dynamic Soft Electrohydraulic Origami Actuators for Agile and Multimodal Robotic Locomotion

open access: yesSmartBot, Volume 2, Issue 2, June 2026.
Most current soft robots still lag far behind their natural counterparts in both agility and speed, mainly attributed to the limited morphing modes and performance of soft actuators. Here, the authors report a new methodology of electrohydraulic origami (EHO) for creating powerful and multimodal soft actuators with large strain, high speed, lightweight,
Wenbo Li   +6 more
wiley   +1 more source

A High Precision Adaptive Back-Stepping Control Method for Morphing Aircraft Based on RBFNN Method

open access: yesXibei Gongye Daxue Xuebao, 2020
To overcome the uncertainties of the nonlinear model of a morphing aircraft, this paper presents a high-precision adaptive back-stepping control method based on the radial basis function neural network (RBFNN).

doaj   +1 more source

Elinvar Materials: Recent Progress and Challenges

open access: yesAdvanced Engineering Materials, Volume 28, Issue 9, 6 May 2026.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics

open access: yesAdvanced Science, Volume 13, Issue 28, 18 May 2026.
Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley   +1 more source

Subterranean Mine Inspection Using the Prometheus Re‐Configurable Drone

open access: yesJournal of Field Robotics, Volume 43, Issue 3, Page 1646-1660, May 2026.
ABSTRACT This paper describes the design, development, and real‐world testing of an autonomous drone for subterranean exploration, known as “Prometheus.” Driven by requirements from industry that the drone be able to be deployed through areas of restricted access, Prometheus was designed to be directly deployed through a 150 mm aperture.
Liam Brown   +8 more
wiley   +1 more source

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