Results 51 to 60 of about 539,000 (325)

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

Advanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian, Frédéric Demoly, Mohammad Lakhi, Bernard Rolfe, Mahdi Bodaghi   +4 more
wiley   +1 more source

Time-Varying Asymmetric Barrier Lyapunov Function-Based Impact Angle Control Guidance Law With Field-of-View Constraint

IEEE Access, 2020
A prerequisite for implementing precision strike is to keep the target locked within the seeker’s field-of-view (FOV). To address this constraint, a novel impact angle control guidance law based on the dynamic surface control and time-varying ...
Jiayi Tian, Xibin Bai, Huabo Yang, Shifeng Zhang   +3 more
doaj   +1 more source

Attractor reconstruction of an impact oscillator for parameter identification [PDF]

, 2015
Peer ...
Baptista, Murilo Da Silva, Ing, James, Sayah, Mukthar, Wiercigroch, Marian   +3 more
core   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Prescribed Performance Guidance Law with Multiple Constraints

International Journal of Aerospace Engineering, 2022
In the terminal guidance phase of intercepting aerial target, a guidance law, satisfying impact angle constraint, acceleration constraint, and second-order dynamic characteristic of interceptor autopilot, is designed based on the prescribed performance ...
Xu Li, Jikun Ye, Chijun Zhou, Xiao Tang
doaj   +1 more source

Implications of neutrino data circa 2005

, 2005
Adopting the 3 neutrino framework, we present an updated determination of the oscillation parameters. We perform a global analysis and develope simple arguments that give essentially the same result.
Aalseth, Alessandro Strumia, Allen, Bahcall, Bahcall, Bahcall, Bahcall, Bahcall, Bandyopadhyay, Barger, Bennett, Caurier, Cirelli, Cirelli, Cleveland, Creminelli, Crotty, de Gouvea, de Gouvea, Engel, Feruglio, Feruglio, Fogli, Fogli, Francesco Vissani, Galbiati, Gonzalez-Garcia, Goswami, Hannestad, Hannestad, Huber, Itow, Klapdor-Kleingrothaus, Klapdor-Kleingrothaus, Koranga, Lesgourgues, Lewis, Lindner, Murayama, Murayama, Peres, Rodin, Seljak, Spergel, Staudt, Staudt, Strumia, Strumia, Strumia, Strumia, Tegmark, Zdesenko   +51 more
core   +1 more source

Adaptable Tile‐Based Pneumatic Origami through Structurally Coupled Localized Actuation

Advanced Engineering Materials, EarlyView.
This article presents tile‐based pneumatic origami structures with rigid tiles and flexible fabric creases, achieving adaptable properties including morphing shape, selective multistability, and tunable stiffness. Independently pressurized folding bladders at each crease enable structurally coupled localized actuation of origami structures.
Tiantian Li, Jonathan Luntz, Diann Brei
wiley   +1 more source

Optimal Look-Angle Guidance with Field-of-View and Impact Angle Constraints for Strapdown Munition

International Journal of Aerospace Engineering, 2022
A strapdown seeker with limited field-of-view (FOV) can simplify and decrease cost of the guidance system for a munition. However, the inherent defect of the strapdown seeker is that it could not provide the necessary line-of-sight (LOS) angular ...
Peng Wang, Jun-fang Fan, Shi-wei Chen, Hai-sen Wang, Wei Wang   +4 more
doaj   +1 more source

An Inkjet‐Printed Platinum‐Based Temperature Sensing Element on Polyimide Substrates

Advanced Engineering Materials, EarlyView.
An inkjet‐printed, meander‐structured, nanoparticle platinum‐based resistive temperature sensors on polyimide substrates are demonstrated as proof‐of‐concept. Optimized sintering at 250°C enables stable conductive structures. The Pt100‐ and Pt1000‐type sensors exhibit linear resistance–temperature characteristics with stable TCR in the 20°C–80°C range,
Shawon Alam, Thomas Kister, Alexander Scholz, Sophie Sauva, Makara Lay, Tobias Kraus, Jasmin Aghassi‐Hagmann   +6 more
wiley   +1 more source

Impact Angle Constrained Three-Dimensional Integrated Guidance and Control Based on Fractional Integral Terminal Sliding Mode Control

IEEE Access, 2019
In this paper, considering a class of skid-to-turn (STT) missile with impact angle constraint to intercept the maneuvering target, a three-dimensional integrated guidance and control law based on the fractional integral terminal sliding mode control ...
Xinghe Zhou, Weihong Wang, Zhenghua Liu, Chen Liang, Chao Lai   +4 more
doaj   +1 more source