An integrated method for railway fastener defect detection and geometric parameter measurement using 3D line laser sensor. [PDF]
PLoS ONERailway fasteners are key components that maintain track stability and ensure train operation safety. Automatic detection technologies for fastener defects have been widely adopted, but high-precision measurement of fastener geometric parameters still ...
Xiaocui Yuan +4 more
doaj +2 more sources
Efficient deep learning based rail fastener screw detection method for fastener screw maintenance robot under complex lighting conditions [PDF]
Scientific ReportsFor the rail fastener replacement operation at night in the wilderness, the lighting conditions on the rail fastener screws are complex, due to the multiple illuminants like headlamps and flashlights at the site, making some parts of the objects appear ...
Yijie Cai, Ming He, Bin Chen
doaj +2 more sources
Influence of Fastener Failure on Dynamic Performance of Subway Vehicle
Applied Sciences, 2022 The track fasteners may be damaged by fatigue and impact load during long-term subway operation, resulting in the failure of the connecting components between the rail and the track plate, and the spacing of rail support becomes larger, resulting in an ...
Tao Zhan +4 more
doaj +1 more source
Fatigue life improvement in fatigue-aged fastener holes using the cold expansion technique [PDF]
, 2003 The use of cold expansion process as a life extension technique on aircraft structural joints was investigated. The primary focus was an experimental test programme consisting of open-hole and low-load transfer joint specimens made of 2024-T351 ...
Wang, Z., Zhang, Xiang
core +1 more source
Analysis of lightning ablation damage of fastener-containing laminates under different factors
Journal of Aeronautical Materials, 2021 In order to study the ablation damage law of composite laminates with fasteners under the action of lightning current, the lightning finite element analysis model of fastener-containing laminates was established based on thermoelectric coupling, and the ...
SHAN Zezhong +3 more
doaj +1 more source
Predicting fatigue crack growth life for cold-worked holes based on existing closed-form residual stress models. [PDF]
, 2003 This paper studies the capability of four closed-form solutions for calculating cold expansion-induced residual stresses. The aim is to check whether these models are able to provide accurate solutions of residual stresses for three aerospace grade ...
Wang, Z., Zhang, Xiang
core +1 more source
An intelligent surface roughness recognition method based on vibration signal imaging and improved DenseNet [PDF]
AIP AdvancesSurface roughness is a critical indicator for evaluating the machining quality of mechanical components, significantly influencing their performance and service life.
Weitao Dou +4 more
doaj +1 more source
Frontiers in Built Environment, 2021 In precast concrete buildings, connections play a key role. Among them and especially in industrial buildings, the ability to transfer a shear force from the beam to the column is often left to steel bars (often a single one) that act as dowels.
Giovanni Muciaccia
doaj +1 more source
Research on track fastener positioning method based on local unidirectional template matching
Science Progress, 2021 Commonly used fastener positioning methods include pixel statistics (PS) method and template matching (TM) method. For the PS method, it is difficult to judge the image segmentation threshold due to the complex background of the track. For the TM method,
Liang Li +7 more
doaj +1 more source
, 2021 Fastener finder toolbox developed by TUDelft to support in the decision of which fastener best fits the circular ...
van der Grinten, Bram +2 more
core +1 more source