Results 81 to 90 of about 60,289 (306)

Detection of grinding temperatures using laser irradiation and acoustic emission sensing technique [PDF]

open access: yes, 2012
This paper presents a new method for the detection of grinding thermal behaviours using a laser irradiation technique. Laser irradiation was initially undertaken in the Lumonics JK704 Nd: YAG laser machine under mimic grinding conditions.
Folkes, Janet   +5 more
core   +1 more source

The effect of signal-to-noise ratio value on the error in measuring acoustic emission parameters: statistical assessment

open access: yesНаучно-технический вестник информационных технологий, механики и оптики
Modern acoustic emission diagnostic systems and complexes are a sensitive tool for detecting developing defects at an early stage when monitoring the technical condition of objects under operational loads.
A. V. Fedorov   +3 more
doaj   +1 more source

Study of response regularity of acoustic emission in gas jet orifice

open access: yesGong-kuang zidonghua, 2016
In order to prevent danger of coal and gas outburst in process of rock cross-cut coal uncovering, tests and analysis on acoustic emission in rock cross-cut coal uncovering process in a coal mine were conducted based on acoustic emission monitoring system.
LI Guo’ai   +4 more
doaj   +1 more source

Acoustic Emission

open access: yes, 2018
Acoustic Emission (AE) is an NDE technique that measures the elastic energy released in the form of acoustic waves in materials that undergo irreversible structure changes (e.g., plastic deformation, cracking, rupture). The emitted acoustic waves are captured by sensors attached to the material’s surface.
Tsangouri, Eleni, Angelis, Dimitrios
openaire   +2 more sources

Benchmarking Coaxial and Angular Optical Emission Spectroscopy With Recommendations for Reliable Compositional In Situ Monitoring During Laser Powder Bed Fusion

open access: yesAdvanced Materials Technologies, EarlyView.
ABSTRACT Real‐time insight into local chemistry is critical for reliable part quality in additive manufacturing, especially laser powder bed fusion (PBF‑LB/M), where rapid thermal cycles and localized evaporation can undermine part performance. Optical emission spectroscopy (OES) offers non‑intrusive, in situ plume monitoring, but detection geometry ...
Philipp Gabriel   +4 more
wiley   +1 more source

OCCLUDED GASES EFFECT ON ACOUSTIC EMISSION UNDER CRYSTAL SALVATION

open access: yesAdvanced Engineering Research, 2011
The acoustic emission following the salt solution processes is investigated. It is educed that the acoustic emission parameters depend on the substance chemistry.
Dmitry M. Kuznetsov   +2 more
doaj  

Size Effect on Acoustic Emission Characteristics of Coal-Rock Damage Evolution

open access: yesAdvances in Materials Science and Engineering, 2017
Coal-gas outburst, rock burst, and other mine dynamic disasters are closely related to the instability and failure of coal-rock. Coal-rock is the assemblies of mineral particles of varying sizes and shapes bonded together by cementing materials.
Zhijie Wen   +4 more
doaj   +1 more source

Propagation characteristics of acoustic emission wave in reinforced concrete

open access: yesResults in Physics, 2017
Due to the complexity of components and damage mechanism of reinforced concrete, the wave propagation characteristics in reinforced concrete are always complicated and difficult to determine.
Haoxiong Feng, Weijian Yi
doaj   +1 more source

Experimental Research on Acoustic Emission Characteristics and Felicity Effects during Coal Fatigue Failure under Cyclic Loading

open access: yesAdvances in Materials Science and Engineering, 2020
In order to study the acoustic emission characteristics and Felicity effect in the process of coal fatigue failure and reveal the internal relationship between the fatigue damage evolution law and the acoustic emission activity, with the help of MTS815 ...
Yongjie Yang, Luyi Xing
doaj   +1 more source

Recent Advances of Slip Sensors for Smart Robotics

open access: yesAdvanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang   +8 more
wiley   +1 more source

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