Results 91 to 100 of about 1,967 (202)

Reliability of rail transverse flaw detection by means of an embedded ultrasonic based device

MATEC Web of Conferences, 2018
The main causes of train derailment are related to rail defects such as head surface defects, horizontal defects, vertical longitudinal split defects, star cracks at colt holes and diagonal crack in web. The most adverse form of these defects consists of
Benzeroual Hajar, Khamlichi Abdellatif, Zakriti Alia   +2 more
doaj   +1 more source

Story2Board: A Training‐Free Approach for Expressive Visual Storytelling

Computer Graphics Forum, EarlyView.
Abstract We present Story2Board, a training‐free framework for expressive storyboard generation from natural language. Existing methods narrowly focus on subject identity, overlooking key aspects of visual storytelling such as spatial composition, background evolution, and narrative pacing.
D. Dinkevich, M. Levy, O. Avrahami, D. Samuel, D. Lischinski   +4 more
wiley   +1 more source

Rail Surface Defect Detection Based on Dual-Path Feature Fusion

With the rapid development of rail transit, the workload of track maintenance has increased, making the intelligent identification of rail surface defects crucial for improving detection efficiency. To address issues such as low defect detection accuracy,
Yinfeng Zhong, Guorong Chen
core   +1 more source

Feasibility Assessment of Guided Wave Generation in Rail Using Electromagnetic Acoustic Transducers for In-Service Inspection

e-Journal of Nondestructive Testing
The use of electromagnetic acoustic transducers for the generation of ultrasonic guided waves for in-service rail testing could help overcoming some of the current limitations characterizing state of the art conventional (bulk) ultrasonic testing by ...
Andrea Appiani, Michele Carboni
doaj   +1 more source

Fatigue Crack Modeling of Railheads Using a Nonlinear Cohesive Zone Model

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT Subsurface fatigue crack growth within railheads can be deleterious leading to catastrophic failures in rails. This study aims to model the fatigue crack growth originating at the subsurface level within railheads. Towards that end, a finite element modeling approach is utilized wherein complex crack growth is explicitly modeled using a ...
Santosh Reddy Kommidi, Hesam Mortazavi, Yong‐Rak Kim, David H. Allen   +3 more
wiley   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

Multi‐Dimensional Conductive Nanocomposites for Flexible Electronics

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
Multi‐dimensional conductive nanocomposites integrate 0D, 1D, and 2D nanomaterials through spatial structure regulation and interface engineering, achieving “1 + 1 > 2” synergistic effects. By leveraging 0D filling to reduce contact resistance, 1D bridging to construct continuous conductive paths, and 2D supporting to enhance mechanical stability ...
Tianyu Wang, Ruimin Cai, Abbas Ali, Lizhe Li, Li Yang, Hulin Zhang, Xuge Fan, Yumin Xia, Wenyong Lai, Linmao Qian, Tiehu Li, Guosheng Shao, Liang Tian   +12 more
wiley   +1 more source

Countdown: Timespaces of Deadlines and Displacement

Population, Space and Place, Volume 32, Issue 5, July 2026.
ABSTRACT This article examines how politically structured deadlines and their accompanying countdowns generate dynamics of displacement by shaping anticipations of violence and prompting accelerated migration. Drawing on ethnographic research on Burundi's 2015 third‐term crisis and The Gambia's 2017 electoral impasse, we show how constitutional ...
Tone Sommerfelt, Simon Turner
wiley   +1 more source

Comparing the In‐Plane Shear Behavior of Glass Fiber‐Reinforced and Carbon Fiber‐Reinforced Polymer Laminates With the Same Epoxy Matrix System in ±45° Tensile Tests

Polymer Composites, Volume 47, Issue 12, Page 11051-11068, 20 June 2026.
Schematic illustration of ±45° tensile testing, including detection of first‐ply failure (FPF) by optical crack detection and acoustic emission monitoring, comparison of FPF values with ASTM D3518 and D3039 criteria, and resulting ply level stress states at FPF for GF‐ and CF‐epoxy laminates.
Maria Gfrerrer, Vasco D. C. Pires, Andreas J. Brunner, Clara Schuecker, Gerald Pinter   +4 more
wiley   +1 more source

Lightweight Pyramid Cross-Attention Network for No-Service Rail Surface Defect Detection

IEEE Access
Vision-based rail defect detection plays a crucial role in ensuring the safety and efficiency of railway transportation systems. However, many existing methods face challenges such as high parameters, complex computation, slow inspection speed, and low ...
Sixu Guo, Jiyou Fei, Liying Wang, Hua Li, Xiaodong Liu   +4 more
doaj   +1 more source