Results 31 to 40 of about 657,080 (262)
Advanced Functional Materials, EarlyView.Edible electronics needs integrated logic circuits for computation and control. This work presents a potentially edible printed chitosan‐gated transistor with a design optimized for integration in circuits. Its implementation in integrated logic gates and circuits operating at low voltage (0.7 V) is demonstrated, as well as the compatibility with an ...
Giulia Coco +8 more
wiley +1 more source
Transport, 2012 The main aim of this work was a study of the microstructure transformations with the residual stress formation that is induced by rolling contact friction and adhesive wore in the wheel–rail system. Several small railsurface samples, we term them as the ‘
Libor Beneš
doaj +1 more source
Real‐Time 3D Ultrasound Imaging with an Ultra‐Sparse, Low Power Architecture
Advanced Healthcare Materials, EarlyView.This article presents a novel, ultra‐sparse ultrasound architecture that paves the way for wearable real‐time 3D imaging. By integrating a unique convolutional array with chirped data acquisition, the system achieves high‐resolution volumetric scans at a fraction of the power and hardware complexity.
Colin Marcus +9 more
wiley +1 more source
On the Identification of Elastic Moduli of In-Service Rail by Ultrasonic Guided Waves
Sensors, 2020 Non-destructive rail testing and evaluation based on guided waves need accurate information about the mode propagation characteristics, which can be obtained numerically with the exact material properties of the rails.
Liqiang Zhu, Xiangyu Duan, Zujun Yu
doaj +1 more source
Integrating Dynamics and Wear Modelling to Predict Railway Wheel Profile Evolution [PDF]
, 2003 The aim of the work described was to predict wheel profile evolution by integrating multi-body dynamics simulations of a wheelset with a wear model. The wear modelling approach is based on a wear index commonly used in rail wear predictions.
A. Ward +8 more
core +1 more source
Adaptive Twisting Metamaterials
Advanced Materials, EarlyView.This work introduces torque‐controlled twisting metamaterials as a transformative platform for adaptive crashworthiness. By combining multiscale predictive modeling with experimental validation on additively manufactured gyroids, it demonstrates tunable stiffness, collapse stress, and energy absorption.
Mattia Utzeri +6 more
wiley +1 more source
International Journal of Innovative Technologies in Economy, 2018 The institutional environment of multimodal (mixed) transport with the participation of rail is considered. The analysis of the main provisions of formal institutes regulating multimodal transportations at the international, European and national levels ...
Стасюк О. М.
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Advanced Materials Technologies, EarlyView.This review explores recent advances in digital micromirror device (DMD)‐based lithography, focusing on its programmable light modulation, multi‐material compatibility, and dimensional patterning strategies. It highlights innovations from optical system design to materials integration and multifunctional applications, positioning DMD lithography as a ...
Yubin Lee +5 more
wiley +1 more source
Elbe River Waterway – Economic and Social Benefits
Transactions of the VŠB: Technical University of Ostrava, Civil Engineering Series, 2014 For a very long time the river Labe belongs to the transport ways with an unmistakable impact. Along the river Labe as well as along other inland water ways the commerce was spread and the towns lying on the river of Labe got the state of Hanza towns ...
Bínová Helena
doaj +1 more source
Measuring wheel/rail contact stresses using ultrasound [PDF]
, 2004 The investigation of contact area and pressure distribution in a wheel/rail contact is essential information required in fatigue and wear calculations to determine design life, regrinding requirements, and maintenance schedules.
Bjorklund, S. +4 more
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