Results 1 to 10 of about 34,056 (164)

Traditional Eddy Current–Pulsed Eddy Current Fusion Diagnostic Technique for Multiple Micro-Cracks in Metals [PDF]

open access: yesSensors, 2018
Due to a harsh working environment, micro-cracks in metal structures (e.g., airplane, oil/gas pipeline, hydro-turbine) often lead to serious accidents, so health monitoring of the metals is of great significance to ensure their safe operation.
Zhenwei Wang, Yating Yu
doaj   +2 more sources

Role of MRI for detecting micro cracks in teeth [PDF]

open access: yesDentomaxillofacial Radiology, 2016
To evaluate the limit of tooth crack width visualization by two MRI pulse sequences in comparison with CBCT.Two extracted human teeth with known crack locations and dimensions, as determined by reference standard microCT, were selected for experimental imaging.
Djaudat, Idiyatullin   +3 more
openaire   +3 more sources

Effect of Surface Roughness on Ultrasonic Testing of Back-Surface Micro-Cracks

open access: yesApplied Sciences, 2018
Surface roughness is one of the main factors that affect the ultrasonic testing of micro-cracks. This article theoretically analyzes the relationship between the changes in the energy intensity of crack echo waves and roughness-modified transmission ...
Zhe Wang   +4 more
doaj   +3 more sources

Multi-scale soil moisture dynamics in arid mined Loess Plateau arise from crack evolution and microstructure collapse [PDF]

open access: yesScientific Reports
Coal mining-induced subsidence and mining-induced cracks significantly disturb soil moisture dynamics in the arid Loess Plateau, yet the multi-scale mechanisms remain poorly understood.
Ting Ma, Fuquan Tang, Furong Zhang
doaj   +2 more sources

A Comparative Review of Image Processing Based Crack Detection Techniques on Civil Engineering Structures [PDF]

open access: yesJournal of Soft Computing in Civil Engineering, 2021
Crack detection and repair of the cracks in engineering structures is essential to ensure serviceability and durability. Traditionally, cracks are detected by the examiner's visual inspection; as a result, crack detection and estimation of ...
Md. Rahat Zawad   +3 more
doaj   +1 more source

MICRO-COMPUTED TOMOGRAPHIC EVALUATION OF DENTINAL CRACKS CAUSED BY VARIOUS RECENT FILE SYSTEMS

open access: yesCumhuriyet Dental Journal, 2022
Objectives: The purpose of present study was to evaluate the incidence of dentinal micro-cracks observed after the use of ProTaper Gold (PTG), WaveOne Gold (WOG), OneShape New Generation (OSNG), K3XF nickel-titanium (NiTi) instrumentation systems ...
Gizem Kutlu Cengiz   +4 more
doaj   +1 more source

Investigating the Effect of Electrical Discharge Process Input Parameters on Mechanical Properties of Aluminum Surface [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2021
One of the important parameters in electrical discharge machining is the presence of micro cracks on the workpiece surface (recast layer). Therefore, the aim of this study was to investigate the possibility of increasing the mechanical properties of ...
Hadi Eivazi bagheri   +3 more
doaj   +1 more source

Characterization of surface and subsurface defects induced by abrasive machining of optical crystals using grazing incidence X-ray diffraction and molecular dynamics

open access: yesJournal of Advanced Research, 2022
Introduction: Surface and subsurface defects were easily induced during abrasive machining process of optical crystals due to their high brittleness. Accurate characterization of these defects is the prerequisite for obtaining optical components with ...
Yong Zhang   +5 more
doaj   +1 more source

Particle flow simulation of deformation and failure process of defective rock samples under triaxial compression

open access: yesShuili Shuiyun Gongcheng Xuebao, 2021
To study the influence of dip angle of rock bridge on rock mechanical behavior and crack propagation mechanism, the particle parallel bonding model in the PFC3D code was used to obtain a group of microscopic parameters, which could reflect the ...
WANG Haoran   +2 more
doaj   +1 more source

Propagation of Non-Linear Lamb Waves in Adhesive Joint with Micro-Cracks Distributing Randomly

open access: yesApplied Sciences, 2020
With the advantages of uniform stress transfer and weight reduction, adhesive joints are widely used in engineering. The propagation of non-linear Lamb waves in an adhesive joint with micro-cracks distributing in a random way is systematically ...
Xiaoyang Li   +3 more
doaj   +1 more source

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