Bojun Sun
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View article: A Novel Rolling Bearing Fault Diagnosis Method Based on the NEITD-ADTL-JS Algorithm
A Novel Rolling Bearing Fault Diagnosis Method Based on the NEITD-ADTL-JS Algorithm Open
This paper proposes an innovative bearing fault diagnosis method aimed at enhancing the accuracy and effectiveness of transfer learning. The innovation lies in the signal preprocessing stage, where a Noise Eliminated Intrinsic Time-Scale D…
View article: State-of-the-Art Detection and Diagnosis Methods for Rolling Bearing Defects: A Comprehensive Review
State-of-the-Art Detection and Diagnosis Methods for Rolling Bearing Defects: A Comprehensive Review Open
Rolling bearings are essential transmission and support components in aircraft engines, playing a critical role in ensuring their safe and stable operation. Rolling bearing faults have a significant impact and should not be ignored. The ef…
View article: Influence of pass spacing on the spinning process of nickel-based alloy conical casing
Influence of pass spacing on the spinning process of nickel-based alloy conical casing Open
High temperature nickel-based alloys are prone to forming defects due to serious work hardening, and the pass spacing is an important parameter in multi-pass drawing and spinning. Using GH4169 superalloy as the material, a Finite Element M…
View article: Effect of process parameters on the force parameters in warm skew rolling of copper ball
Effect of process parameters on the force parameters in warm skew rolling of copper ball Open
In order to better control the forming quality of copper ball by warm skew rolling process, a Finite Element Model (FEM) of copper ball warm skew rolling for the coupling of thermal and mechanical was established. The influence of process …
View article: Constraints of emissivity model for multi-wavelength pyrometer
Constraints of emissivity model for multi-wavelength pyrometer Open
In this paper the intrinsic relationship between the equivalence and emissivity is put into evidence, and the related constrains of emissivity are put forward. Using the “secondary measurement method” as an example, some simulated experime…
View article: Development of a Pyrometer That Measures the True Temperature Field of the Two-Dimensional Array
Development of a Pyrometer That Measures the True Temperature Field of the Two-Dimensional Array Open
This paper develops a two-dimensional array pyrometer, which can measure the true temperature field of the two-dimensional array. The pyrometer consists of an optical part, a circuit part and a software part. In the optical part, the radia…
View article: Inversion of Thermal Conductivity in Two-Dimensional Unsteady-State Heat Transfer System Based on Finite Difference Method and Artificial Bee Colony
Inversion of Thermal Conductivity in Two-Dimensional Unsteady-State Heat Transfer System Based on Finite Difference Method and Artificial Bee Colony Open
Based on the finite difference method and the artificial bee colony algorithm, the thermal conductivity in the two-dimensional unsteady-state heat transfer system is deduced. An improved artificial bee colony algorithm (IABCA), that artifi…
View article: Effect of process parameters on the end-face quality of cross-wedge rolling (CWR) shaft from titanium alloy Ti6Al4V
Effect of process parameters on the end-face quality of cross-wedge rolling (CWR) shaft from titanium alloy Ti6Al4V Open
In order to verify the formability of CWR of titanium alloy Ti6Al4V, and to study effect of parameters on the end-face quality of CWR shafts from titanium alloy Ti6Al4V. The forming process was simulated with the DEFORM-3D software．The res…