35 Result(s)

Article

FAST unveils a new era in the discovery of long-period pulsars in globular clusters

Zhanwen Han in Science China Physics, Mechanics & Astronomy (2024)

Article

A seven-Earth-radius helium-burning star inside a 20.5-min detached binary

Binary evolution theory predicts that the second common envelope ejection can produce low-mass (0.32–0.36 M_⊙) subdwarf B (sdB) stars inside ultrashort-orbital-period binary systems, as their helium cores are igni...

Jie Lin, Chengyuan Wu, Heran **ong, **aofeng Wang, Péter Németh… in Nature Astronomy (2024)

Article

Wide near-infrared II emissions and LED application of Y₂Ti₂O₇: Cr³⁺/Yb³⁺/Nd³⁺ phosphors

Y₂Ti₂O₇:Cr³⁺/Yb³⁺/Nd³⁺ phosphors with broadband near-infrared emission were developed by a high-temperature solid-state method. Under the excitation of 405 nm light, it shows broadband near-infrared emission from...

Zhanwen Han, Hongquan Yu, Shanshan Cong, Tianshuo Liu, Jiashi Sun… in Applied Physics A (2023)

Article

The mechanism of irregular hole-shape formation during ultrafast laser micro-drilling of metals

The micro-drilling of metals using ultrafast laser is of great interest for a wide range of industrial applications. To date, high drilling quality remains a grand challenge due to the elusive mechanism of hol...

Zhanwen A, Guisheng Zou, Wenzheng Zhao, Bin Feng, Chengjie Du, Yuxi Wu… in Applied Physics A (2023)

Article

Electrospinning preparation and white upconversion luminescence of Y₂Ti₂O₇:Tm/Yb/Er nanotubes

The lanthanide-based white light-emitting diodes excited by irradiation at a wavelength of 980 nm have attracted increasing attention because of their low photon frequency and ease of implementation. Here, we ...

Zhanwen Han, Hongquan Yu, Zhuang Tian, **su Zhang, Jiashi Sun… in Applied Physics A (2022)

Chapter and Conference Paper

Acoustic Emission Characteristics of Defects in Crawler Crane Truss Beam

In order to carry out the application of acoustic emission technology in the structural inspection of crawler crane truss beam, this paper studies the AE attenuation characteristics and AE location method in t...

Zhanwen Wu, Gongtian Shen, Daihua Sun… in Advances in Acoustic Emission Technology (2021)

Chapter and Conference Paper

Comparative Analysis of the International Status of Acoustic Emission Equipment Performance Testing

The good performance of acoustic emission equipment is an important guarantee for the reliability of test results. With the continuous improvement of the research and development technology of acoustic emissio...

Junjiao Zhang, Gongtian Shen, Yilin Yuan… in Advances in Acoustic Emission Technology (2021)

Chapter and Conference Paper

Acoustic Emission Behavior of TC4 Titanium Alloy Manufactured by Electron-Beam Free-Form Fabrication During Tensile Deformation

Acoustic emission (AE) testing was carried out in the TC4 titanium alloy manufactured by electron-beam free-form fabrication. The acoustic emission signal parameter distribution, localization characteristics, ...

Zhanwen Wu, Gongtian Shen, Yongna Shen… in Advances in Acoustic Emission Technology (2019)

Chapter and Conference Paper

Investigation on Acoustic Emission Characteristics of Steel Structure of Amusement Device

Steel structure is the foundation of the amusement device. The health status of the steel structure is crucial to the safe operation of amusement device. In order to realize the overall monitoring of the steel...

Junjiao Zhang, Gongtian Shen, Zhanwen Wu… in Advances in Acoustic Emission Technology (2019)

Chapter and Conference Paper

Defect Diagnosis of Low-Speed Heavy-Duty Bearings Using Acoustic Emission

A sudden failure of a heavy-duty rolling bearing normally causes high economic loss and has potentially disastrous consequences for the machine operators present. The most established technique for monitoring ...

Guanghai Li, Yang Jiao, Zhanwen Wu in Advances in Acoustic Emission Technology (2019)

Chapter and Conference Paper

Fault Analysis for Low-Speed Heavy-Duty Crane Slewing Bearing Based on Wavelet Energy Spectrum Coefficient

By use of the custom-built crane model, loads, instrument, and sensor, AE tests for the slewing bearing with no defect, the slewing bearing with outer race defect, and the slewing bearing with roller defect ...

Yang Jiao, Guanghai Li, Zhanwen Wu, Huipo Geng… in Advances in Acoustic Emission Technology (2017)

Chapter and Conference Paper

Investigation of Acoustic Emission Characteristics on Harbor Portal Crane

Acoustic emission (AE) testing was carried out for the inspection of A-frame structure in a harbor portal crane and its testing areas were the repair welding on the A-frame. The acoustic emission localization ...

Zhanwen Wu, Gongtian Shen, Junjiao Zhang… in Advances in Acoustic Emission Technology (2017)

Chapter and Conference Paper

Research on the Acoustic Emission and Metal Magnetic Memory Characteristics of the Crane Box Beam During Destructive Testing

In order to achieve rapid detection and localization of defects in a crane box beam, we used acoustic emission technology (AET) and metal magnetic memory technology (MMMT) to obtain the propagating characteris...

Zhanwen Wu, Gongtian Shen, Junjiao Zhang… in Advances in Acoustic Emission Technology (2015)

Chapter and Conference Paper

Application of Acoustic Emission Technology for Rolling Bearing Condition Monitoring on Passenger Ropeway

As one of the most important parts on the passenger ropeway, the rolling bearing is difficult to be disassembled for in-service inspection. Online monitoring of rolling bearing on passenger ropeway could be ca...

Junjiao Zhang, Heying Wang, Gongtian Shen… in Advances in Acoustic Emission Technology (2015)