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Spalling localization on the outer ring of hybrid ceramic ball bearings based on the sound signals

H. T. Shi, X. T. Bai, K. Zhang, Z. N. Wang, Z. M. Liu
2019 IEEE Access  
This paper proposes a new localization method for spalling on the outer ring of hybrid ceramic ball bearings based on the characteristics in the sound radiation signals.  ...  Spalling is one of the main defects of hybrid ceramic bearings, and the localization of the spalling is hard to realize based on traditional vibration signals.  ...  CONCLUSION The localization methods for the spalling on the outer ring of a hybrid ceramic ball bearing are discussed in this paper, and the characteristics in the sound radiation are investigated based  ... 
doi:10.1109/access.2019.2941982 fatcat:4fblfyhlhbgddm6qymqat6gq4q

Time-Domain Based Quantification of Surface Degradation for Better Monitoring of the Health Condition of Ball Bearings

Ayman Salem, Abdelrahman Aly, Sadok Sassi, Jamil Renno
2018 Vibration  
In the second phase, a specific technique of seeding defects inside the ball bearings was developed.  ...  In the last phase, damaged bearings (and healthy ones serving as a reference) were installed on the test rig, and different vibration measurements were taken.  ...  Figure 12 . 12 Remounting of the bearings: (a) insertion of the balls between the inner and outer rings; (b) riveting of the cage; (c) lubrication and storage.  ... 
doi:10.3390/vibration1010013 fatcat:47knhmmcwncf5kq5inlgrfa35e

A Fault-Signal-Based Generalizing Remaining Useful Life Prognostics Method for Wheel Hub Bearings

Shixi Tang, Jinan Gu, Keming Tang, Rong Zou, Xiaohong Sun, Saad Uddin
2019 Applied Sciences  
Then, the generalizing RUL prognostics method is designed based on the fault signal model. Lastly, the simplified solution of the generalizing RUL prognostics method is deduced.  ...  Due to which, a generalizing RUL prognostics method is designed based on fault signal data. Firstly, the fault signal model is designed with the signal in a complex and mutative environment.  ...  The wheel hub bearings are composed with an outer ring, ball, and inner ring, as shown in Figure 1b. area, or the material has defects.  ... 
doi:10.3390/app9061080 fatcat:v7rlpkww4vd5rohcjmxkumwoju

A review of recent advances in tribology

Yonggang Meng, Jun Xu, Zhongmin Jin, Braham Prakash, Yuanzhong Hu
2020 Friction  
One of the most important of these is that tribology being a highly multidisciplinary field, the research results are widely spread across various disciplines and there can be omissions because of this  ...  This review takes stock of the recent advances in research pertaining to different aspects of tribology within the last 2 to 3 years.  ...  Acknowledgements This work was financially supported by National Natural Science Foundation of China (Grant Nos. 51635009 and 51775460) and the funding of State Key Laboratory of Tribology, China (SKLT2018C05  ... 
doi:10.1007/s40544-020-0367-2 fatcat:b2zvbchuzfbqre72ik5dtqrfdu

Measurement of total sound energy density in enclosures at low frequencies

Finn Jacobsen
2008 Journal of the Acoustical Society of America  
Members of the audience completed questionnaires assessing the acoustic qualities of the spaces.  ...  The poor quality of clarity was assessed for churches with longest EDT for the performance of music involving polyphony.  ...  It is based on a hybrid model: the statistical energy analysis ͑SEA͒ for the sound transmission across the various elements of the enclosure and the method of image sources for the sound field inside the  ... 
doi:10.1121/1.2934233 fatcat:vuavezpbsnabxmhi4jlbvbwgly

Parameter survey of a rib stiffened wooden floor using sinus modes model

Lars‐Göran Sjökvist, Jonas Brunskog, Finn Jacobsen
2008 Journal of the Acoustical Society of America  
Members of the audience completed questionnaires assessing the acoustic qualities of the spaces.  ...  The poor quality of clarity was assessed for churches with longest EDT for the performance of music involving polyphony.  ...  It is based on a hybrid model: the statistical energy analysis ͑SEA͒ for the sound transmission across the various elements of the enclosure and the method of image sources for the sound field inside the  ... 
doi:10.1121/1.2933934 fatcat:fmeouf2iynctnculdxzvoqb4iu

Spherical near field acoustic holography with microphones on a rigid sphere

Finn Jacobsen, Jo/rgen Hald, Efrén Fernandez, Guillermo Moreno
2008 Journal of the Acoustical Society of America  
Members of the audience completed questionnaires assessing the acoustic qualities of the spaces.  ...  The poor quality of clarity was assessed for churches with longest EDT for the performance of music involving polyphony.  ...  It is based on a hybrid model: the statistical energy analysis ͑SEA͒ for the sound transmission across the various elements of the enclosure and the method of image sources for the sound field inside the  ... 
doi:10.1121/1.2934035 fatcat:57w2rziyfvcmnnyzsxlgg43qxa

Nanosecond Tuning In Microwave Resonators Fabricated On Ruddlesden-Popper Thin Films

A.M. Hagerstrom, X. Lu, N.M. Dawley, H. Nair, Jordi Mateu, J.C. Booth, C.J. Long, D.G. Scholm, N. Orloff
2017 Zenodo  
The American Ceramic Society accepts no responsibility for the content or quality of the abstract content. Abstracts are arranged by day, then by symposium and session title.  ...  An Author Index appears at the back of this book. The Meeting Guide contains locations of sessions with times, titles and authors of papers, but not presentation abstracts.  ...  The biaxial strength was evaluated on plate-like specimens cut from a wafer, using the ball-on-three-balls test.  ... 
doi:10.5281/zenodo.1155779 fatcat:oczwziam2bar7dpe7r7yybcu3y

CERAMIC ABSTRACTS

1959 Journal of The American Ceramic Society  
outer ends of the hinged sections arranged to bear against the connector plate in the closed positions of the hinged sections, and a clamp mounted on the connector plate for clamping the clamping lugs  ...  the outer surfaces thereof to form an interlocking of the ceramic casing with each of the surfaces of the glass fiber block, there being apertures in the closed end walls of the ceramic casing exposing  ... 
doi:10.1111/j.1151-2916.1959.tb12938.x fatcat:fcpa34fa5jhfjbcx74csjg5nuy

Voronoi polygons and self-consistent technique used to compute the airflow resistivity of randomly placed fibers in glass wool

Viggo Tarnow
2002 Journal of the Acoustical Society of America  
degress of spalling at the surface are worked out.  ...  Studies on human subjects were based on x-ray, ultrasonographic, and laryngoscopic imaging of players while sounding notes on the harmonica.  ...  On the other hand, pyroshocks can cause malfunctions of equipment mounted near the pyrotechnic device, particularly equipment containing microelectronic or ceramic elements.  ... 
doi:10.1121/1.4809175 fatcat:jqxtrgkn2fcf3a7vzsp2u56akm

Compromises in orchestra pit design: A ten‐year trench war in The Royal Theatre, Copenhagen

Anders Chr. Gade, Bo Mortensen
1998 Journal of the Acoustical Society of America  
Based on the results of these two experiments, it is concluded that only the high-frequency component of an HRTF provides spectral cues for sound localization on a median plane.  ...  component has no evident effect on the sound localization on a median plane.  ...  The ranges supported the nonlinearity of the human auditory scale in the speech sound.  ... 
doi:10.1121/1.422278 fatcat:l4rayw2q4ja6demlq46irqfu4m

Simultaneous measurements of room‐acoustic parameters using different measuring equipment?

Tor Halmrast, Anders Gade, Bjorn Winsvold
1998 Journal of the Acoustical Society of America  
Based on the results of these two experiments, it is concluded that only the high-frequency component of an HRTF provides spectral cues for sound localization on a median plane.  ...  component has no evident effect on the sound localization on a median plane.  ...  The ranges supported the nonlinearity of the human auditory scale in the speech sound.  ... 
doi:10.1121/1.422575 fatcat:fofoye2ypjho5nhhtqgr4fvczm

Conceptual design and multidisciplinary optimization of in-plane morphing wing structures

Daisaku Inoyama, Brian P. Sanders, James J. Joo, Douglas K. Lindner
2006 Smart Structures and Materials 2006: Modeling, Signal Processing, and Control  
Based on the higher order spectrum analysis results, we can represent the damping force model as higher order function with 3rd-order nonlinear term.  ...  Therefore we can obtain information about the modeling of the damper by analyzing the frequency coupling between damper speed signal and damper force signal.  ...  The SMA vibration device was composed of a frame, two low-friction ball bearings, a mass, and two pseudoelastic SMA wires of equal length, connecting the mass to the frame (both top and bottom).  ... 
doi:10.1117/12.658686 fatcat:rqnvt2atkjgnvpog5pivwjejzm

CERAMIC ABSTRACTS

1947 Journal of The American Ceramic Society  
With the depth-sounding method A supplement to previous bibliographies (see Ceram.  ...  The mechanics of formation of the clinker con- high slag content, in dry crushers (ball mills) very hard ~ stituents are presented, followed by very thorough con- crusts form on the walls and balls of  ... 
doi:10.1111/j.1151-2916.1947.tb18859.x fatcat:3nwz7275fjahzi7ubvguwdid64

Improvement of methods for evaluating the spacecraft pressure wall penetration probability
Совершенствование методики оценки вероятности пробоя стенок конструкции космических аппаратов

Б.Т. Добрица, Д.Б. Добрица, Б.Ю. Ященко
2017 Engineering Journal Science and Innovation  
Nölke 4.0 rev.3 1.4.2008 Completed ver. 4.0 Updated Bumper code meteoroid results for sphere, cube and space station (to reflect constant meteoroid density of 1.0g/cm 3 as required by the calibration case  ...  Schäfer 5.0 rev. 3 17.04.2012 Cover intro 1 2 4 7 Updated IADC logo Removed "preliminary note" on pg.2 Updated agency list Added 2.3.9 TURANDOT (IT28-1-3) Added 2.7 Impact Risk Analysis of Unmanned Spacecraft  ...  Hybrid launchers are machines based on explosive techniques and 3-stage methods.  ... 
doi:10.18698/2308-6033-2017-7-1633 fatcat:5yllvkcwhbfvrlium43u6j4wre
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