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A review of two types of non-destructive testing technique for pressure pipelines

期刊: INSIGHT, 2021; 63 (6)

Pulsed eddy current testing (PECT) and electromagnetic ultrasonic non-destructive testing (NDT) techniques are important methods for detecting defects......

Multivariate non-destructive evaluation for tensile strength of steel based on neural network

期刊: INSIGHT, 2021; 63 (7)

Tensile strength (TS) is an important mechanical property of a material. The conventional mechanical measurement method destroys the object under inve......

Mechanical properties of TiO2 nanotubes investigated by AFM and FEM

期刊: INSIGHT, 2021; 63 (7)

The mechanical measurements of nanostructures are crucial to the development and processing of novel nanodevices. In this study, TiO2 nanotubes were s......

Improving the robustness of DI and PVI further using fast guided filter on radiographic images

期刊: INSIGHT, 2021; 63 (7)

To further improve the robustness of the weld defect index (DI) and peak-valley index (PVI), which are key indices for detecting weld defects in radio......

Studies of filtering effect on fault diagnosis of spindle device in hoist

期刊: INSIGHT, 2021; 63 (6)

Spindle devices, which are among the core components of mine hoists, are typical rotor-bearing systems. Vibration-based fault diagnosis techniques are......

Research on a feature extraction method for local faults in planetary gearboxes based on improved dynamic time warping

期刊: INSIGHT, 2021; 63 (8)

Aiming at the local fault diagnosis of planetary gearbox gears, a feature extraction method based on improved dynamic time warping (IDTW) is proposed.......

Ultrasonic feature imaging of a multi-layered structure beyond a thin, highly reflective layer using a convolutional neural network

期刊: INSIGHT, 2021; 63 (4)

A helicopter propeller is a kind of multi-layered composite material bonding structure. Ensuring that composite structures are free from defects can r......

Three-dimensional reconstruction of a shaft-type deep-small hole with variable aperture based on image processing for ultrasound detection

期刊: INSIGHT, 2021; 63 (4)

A method based on image processing for ultrasound detection is proposed to solve the problems of variable aperture and deviation from the axis in deep......

Ultrasound SAFT imaging for HSR ballastless track using the multi-layer sound velocity model

期刊: INSIGHT, 2021; 63 (4)

Accurate detection of void defects in ballastless track structures has become a core problem that needs urgent resolution for the maintenance and repa......

Simultaneous determination of layer thicknesses in graded layer materials by ultrasonic non-destructive method

期刊: INSIGHT, 2021; 63 (4)

Functionally graded materials (FGMs) are widely applied in aerospace, energy, biology and other fields. Simultaneous determination of the thicknesses ......

A gearbox fault diagnosis method based on MKurt spectrum and CYCBD

期刊: INSIGHT, 2021; 63 (8)

Maximum second-order cydostationary blind deconvolution (CYCBD) is a good signal denoising method, which can be employed for gear fault diagnosis. How......

Simultaneous measurement of thickness and lift-off using the tangential component of magnetic flux density in pulsed eddy current testing

期刊: INSIGHT, 2021; 63 (6)

The pulsed eddy current (PEC) technique is commonly used in the petrochemical and power generation industries to measure two parameters: the degree of......

A review of the application of oil analysis in condition monitoring and life prediction of wind turbine gearboxes

期刊: INSIGHT, 2021; 63 (5)

Condition maintenance of wind turbine gearboxes is important because of their high failure probability and the difficulties associated with their main......

Depth feature extraction of surface-breaking defects using laser pulsed thermography

期刊: INSIGHT, 2021; 63 (5)

In this paper, the feasibility of the depth feature extraction of surface-breaking defects based on laser pulsed thermography in transmission mode is ......

A novel method using infrared thermography for hot fluid leakage detection on surfaces with uneven emissivities

期刊: INSIGHT, 2021; 63 (5)

Uneven surface emissivity will cause illusory temperature variation in infrared surface temperature mapping. For this reason, most of the detailed rev......

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