Results 41 to 50 of about 302,242 (373)

Method and apparatus for using magneto-acoustic remanence to determine embrittlement [PDF]

, 1992
A method and apparatus for testing steel components for temperature embrittlement uses magneto-acoustic emission to nondestructively evaluate the component are presented.
Allison, Sidney G., Cantrell, John H., Namkung, Min, Yost, William T.   +3 more
core   +1 more source

Directional emission in an on-chip acoustic waveguide [PDF]

arXiv, 2023
Integrated acoustic circuits leverage guided acoustic waves for applications ranging from radio-frequency filters to quantum state transfer, biochemical sensing and nanomechanical computing. In many applications it is desirable to have a method for unidirectional acoustic wave emission.
arxiv  

Monitoring and Maintaining Laser Surface Texture Quality Based on Acoustic and Optical Process Emissions during Direct Laser Interference Patterning

Advanced Engineering Materials, EarlyView.
Acoustic emissions during direct laser interference patterning are shown to strongly correlate with surface texture depth. By implementing a closed‐loop control system utilizing acoustic feedback, consistent microstructures with uniform depth are achieved despite laser power fluctuations.
Tobias Steege, Frederic Schell, Adrian Belkin, Christoph Zwahr, Andrés F. Lasagni   +4 more
wiley   +1 more source

Acoustic emission during the millisecond laser-optical glass interaction assisted by the nanosecond laser

AIP Advances, 2018
A hydrophone is used to detect the acoustic emission for the combined pulsed laser (CPL)-BK7 glass interaction. The CPL is composed of a nanosecond (ns) laser and a millisecond (ms) laser, which are separated with a certain period of time.
Y. Pan, Z. Wu, Y. Sun, H. Zhang, Z. Shen, J. Lu, X. Ni, B. Wang   +7 more
doaj   +1 more source

Acoustic emission in the friction of composite materials

Aviation, 2014
The model of acoustic emission signal formation during friction and wearing of surfaces of composite materials was examined. The forms of acoustic emission resultant signals were shown.
Sergey Filonenko, Aleksandr Kosmach
doaj   +1 more source

Highly Off‐Centering Cations in Pavonite‐Structured Ag1.75InSb5.75Se11 with Competitive Thermoelectric Performance

Advanced Functional Materials, EarlyView.
Off‐centering of cations in pavonite‐structured Ag1.75InSb5.75Se11 (AISS) breaks crystal symmetry, inducing Rashba‐like band splitting and high band degeneracy, thus enhancing Seebeck coefficients. Soft bonds between off‐centered cations and Se atoms increase phonon scattering, achieving low lattice thermal conductivity (0.22 W m−1K−1 at 723 K). Doping
Chenghao Xie, Rongcheng Li, Weibin Xu, Bowen Jin, Xiao‐Lei Shi, Xinfeng Tang, Gangjian Tan, Zhi‐Gang Chen   +7 more
wiley   +1 more source

Study on internal strain and acoustic emission characteristics of loaded concrete

Gong-kuang zidonghua, 2016
order to study interior crack evolution rules in rupture and instability process of concrete specimen, uniaxial compression experiment of concrete specimen embedded with strain brick was conducted, variation rule of internal strain of the concrete ...
WANG Hao, WANG Xiaoran, LIU Xiaofei, LI Xuelong, ZHAN Tangqi   +4 more
doaj   +1 more source

Analysis of acoustic emission during the melting of embedded indium particles in an aluminum matrix: a study of plastic strain accommodation during phase transformation

, 2012
Acoustic emission is used here to study melting and solidification of embedded indium particles in the size range of 0.2 to 3 um in diameter and to show that dislocation generation occurs in the aluminum matrix to accommodate a 2.5% volume change.
A. Galeski, A. Wolfenden, A.K. Malhotra, A.K. Malhotra, A.K. Malhotra, A.L. Purvis, B. Guérard von, B.I. Voronenko, D.C. Ahn, D.C. Aken Van, David C. Van Aken, F. Kroupa, G.M. Vyletel, I. Gurrappa, J. Tao, J.L. Murray, J.W. Edington, L. Bourgeois, L.E. Murr, M.D. Sangid, M.H. Loretto, M.M. Kuba, Michael M. Kuba, P.C. Clapp, P.M. Mummery, P.S. Dobson, R. Vandervoort, R.Z. Valiev, S.M.C. Bohemen Van, S.M.C. Bohemen Van, S.M.C. Bohemen Van, T.Y. Tan, V.B. Vorontsov, Y. Oshima   +33 more
core   +1 more source

Direct measurement of acoustic spectral density and fractional topological charge [PDF]

arXiv, 2022
Local density-of-states (LDOS) is a fundamental spectral property that plays a central role in various physical phenomena such as wave-matter interactions. Here, we report on the direct measurement of the LDOS of acoustic systems and derive from which the fractional topological number in an acoustic Su-Schrieffer-Heeger system.
arxiv  

Intermittent Peel Front Dynamics and the Crackling Noise in an Adhesive Tape [PDF]

Phys.Rev.E78, 066119, 2008, 2008
We report a comprehensive investigation of a model for peeling of an adhesive tape along with a nonlinear time series analysis of experimental acoustic emission signals in an effort to understand the origin of intermittent peeling of an adhesive tape and its connection to acoustic emission.
arxiv   +1 more source