Results 21 to 30 of about 3,739 (197)

Health Status Assessment of Passenger Ropeway Bearings Based on Multi-Parameter Acoustic Emission Analysis

Sensors
This study presents a comprehensive investigation of acoustic emission (AE) characteristics for condition monitoring of rolling bearings in passenger ropeway systems.
Junjiao Zhang, Yongna Shen, Zhanwen Wu, Gongtian Shen, Yilin Yuan, Bin Hu   +5 more
doaj   +1 more source

Circumferential Crack Detection in Ultra-High-Pressure Tubular Reactors with Pulsed Eddy Current Testing

Sensors
Ultra-high-pressure tubular reactors are crucial pieces of equipment for polyethylene production. Long-term operation under high temperature, high pressure, and other extremely harsh conditions can lead to various defects, with circumferential cracks ...
Yaxing Wang, Jie Sun, Huasheng Hu, Bo Hu, Weiqi Bin, Wen Shi, Yuewen Fu   +6 more
doaj   +1 more source

A fatigue-reliability approach using ultrasonic non-destructive inspection

Comptes Rendus. Mécanique, 2023
Fatigue crack propagation can considerably reduce the life of components, leading to sudden failures. This paper provides a method for fatigue life prediction based on ultrasonic non-destructive inspection applied on Al 2024 T3 material.A new crack ...
Chouikh, Iheb, Bouraoui, Chokri
doaj   +1 more source

Automatic Detection of Concrete Surface Defects Using Pre-Trained CNN and Laser Ultrasonic Visualization Testing

International Journal of Prognostics and Health Management
In recent years, nondestructive testing for civil engineering structures has become increasingly important. Ultrasonic testing is one of nondestructive inspection methods for civil structures. However, the inspection of civil engineering structures takes
Takahiro Saitoh, Tsuyoshi Kato, Sohichi Hirose   +2 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Research on AE method for thermal fatigue damage in heat transfer oil pipes

Frontiers in Physics
Thermal oil pipes in concentrated solar power systems face prevalent risks of thermal fatigue damage during long-term outdoor service, while the dynamic monitoring of such structures remains an unaddressed gap.
Zhenlong Hu, Zhenlong Hu, Xinxin Luo, Junjiao Zhang, Junjiao Zhang, Qiufeng Li, Changhui Huang, Chao Lu, Xin Li   +8 more
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source

Literature Review: Theory and Application of In-Line Inspection Technologies for Oil and Gas Pipeline Girth Weld Defection

Sensors, 2016
Girth weld cracking is one of the main failure modes in oil and gas pipelines; girth weld cracking inspection has great economic and social significance for the intrinsic safety of pipelines.
Qingshan Feng, Rui Li, Baohua Nie, Shucong Liu, Lianyu Zhao, Hong Zhang   +5 more
doaj   +1 more source

Automation for nondestructive inspection of aircraft [PDF]

Conference on Intelligent Robots in Factory, Field, Space, and Service, 1994
We discuss the motivation and an architectural framework for using small mobile robots as automated aids to operators of nondestructive inspection (NDI) equipment. We review the need for aircraft skin inspection, and identify the constraints in commercial airlines operations that make small mobile robots the most attractive alternative for automated ...
openaire   +1 more source

Defect Evolution and Mechanical Performance of Fused Filament Fabrication‐Manufactured 17‐4PH Stainless Steel Revealed by X‐Ray Computed Tomography

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography reveals how process‐induced defects evolve from green to sintered states in Fused Filament Fabrication (FFF)‐manufactured 17‐4PH stainless steel. Internal porosity, weakest cross‐sections, and fracture locations show strong correlation with tensile performance, demonstrating the potential of computed tomography (CT)‐based ...
György Ledniczky, Márk Sárközi, Ibolya Zsoldos, Zoltán Weltsch   +3 more
wiley   +1 more source