Results 321 to 330 of about 302,242 (373)
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Non-Destructive Testing, 1973
Abstract The author discusses the significance of the amplitude of acoustic emission and its usefulness as a source of information. He describes the theory and application of amplitude sorting. He also presents some experimental results and concludes that the method has a significant future role as part of a more complete characterization of emission
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Abstract The author discusses the significance of the amplitude of acoustic emission and its usefulness as a source of information. He describes the theory and application of amplitude sorting. He also presents some experimental results and concludes that the method has a significant future role as part of a more complete characterization of emission
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Non-Destructive Testing, 1974
Abstract The author discusses the significance and measurement of the frequency and shape of acoustic emissions. He considers theoretical descriptions of acoustic emission and compares them with experimental evidence. He considers the implications of this understanding of the nature of acoustic emission and illustrates these implications by a ...
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Abstract The author discusses the significance and measurement of the frequency and shape of acoustic emissions. He considers theoretical descriptions of acoustic emission and compares them with experimental evidence. He considers the implications of this understanding of the nature of acoustic emission and illustrates these implications by a ...
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Solidification and Acoustic Emission
Cast Metals, 1989The acoustic signals emitted during the solidification of the organic compound maleic anhydride, and from commercial eutectic Al-Si alloy have been monitored.
Chen Baohua, Li Musen, Bian Xiufang
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Mechanoluminescence and acoustical emission
Kristall und Technik, 1980AbstractIt is reported on the measuring of the synchronic mechanoluminescent (ML) and acoustical emission (AE). The source of both ML and AE was the mechanical deformation of organic glass, of steel and copper plates. The results confirmed the connection between MA and AE stimulated by the same deformation source.
F. Karel +3 more
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International Journal of Tropical Insect Science, 1984
Studies on G. m. morsitans clearly indicate that the foundations for acoustic communication among tsetse exist. Tsetse produce sound in connection with the important physiological activities of feeding, mating and larviposition. The possible role of these acoustic emissions in the complex behaviour patterns of tsetse is discussed.
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Studies on G. m. morsitans clearly indicate that the foundations for acoustic communication among tsetse exist. Tsetse produce sound in connection with the important physiological activities of feeding, mating and larviposition. The possible role of these acoustic emissions in the complex behaviour patterns of tsetse is discussed.
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2008
1. Introduction (Grosse) 2. History and Fundamentals (Ohtsu) 3. Sensors and Instruments (Ohtsu and Grosse) 4. Parametric Analysis (Shiotani, Tobishima Corp., Japan) 5. Signal-Based Analysis (Grosse UCB, Linzer, CSIR, SA) 6. Source Localization (Kurz, Koppel, Linzer, Schechinger, Grosse) 7. Source Mechanisms (Ohtsu) 8. Moment Tensor Analysis (Shigeishi,
Christian Grosse, Masayasu Ohtsu
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1. Introduction (Grosse) 2. History and Fundamentals (Ohtsu) 3. Sensors and Instruments (Ohtsu and Grosse) 4. Parametric Analysis (Shiotani, Tobishima Corp., Japan) 5. Signal-Based Analysis (Grosse UCB, Linzer, CSIR, SA) 6. Source Localization (Kurz, Koppel, Linzer, Schechinger, Grosse) 7. Source Mechanisms (Ohtsu) 8. Moment Tensor Analysis (Shigeishi,
Christian Grosse, Masayasu Ohtsu
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The Journal of the Acoustical Society of America, 1986
A periodic structure such as a diffraction grating is disposed on the surface of an object from which acoustic emissions are to be detected. A plane monochromatic light beam is incident on the periodic structure and forms a number of Bragg diffraction orders at predetermined angles.
Henry A. Scarton +2 more
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A periodic structure such as a diffraction grating is disposed on the surface of an object from which acoustic emissions are to be detected. A plane monochromatic light beam is incident on the periodic structure and forms a number of Bragg diffraction orders at predetermined angles.
Henry A. Scarton +2 more
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Acoustic emissions in micromanufacturing
The Journal of the Acoustical Society of America, 1994Micro manufacturing is posing fundamental problems in terms of realizing miniaturized parts and systems in real world of manufacturing [A. Ünal, J. Acoust. Soc. Am. Suppl. 1 88, S20 (1990)]. Acoustic emissions combined with modern artificial neural network based intelligent signals analysis may present new possibilities.
A. Ünal, C. H. Wu, S. Mackertich
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Acoustic emission in ceramic actuators
Ferroelectrics, 1988Abstract Two types of Acoustic Emission (AE) are possible in piezoelectric/electrostrictive actuators. One is the so-called normal AE, occurring when a piezoelectric actuator is driven by a bipolar electric field, and the other is an abnormal AE, occurring during actual breakdown of the actuator.
Kenji Uchino, Terukiyo Hirose
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The Journal of the Acoustical Society of America, 1991
The invention simulates acoustic emission signals produced by crack growth within a structure so that listening equipment may properly be calibrated to listen for acoustic emission signals from actual structural crack growth. The invention has several embodiments which generate acoustic emission signals from a crack growing in a specimen such that the ...
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The invention simulates acoustic emission signals produced by crack growth within a structure so that listening equipment may properly be calibrated to listen for acoustic emission signals from actual structural crack growth. The invention has several embodiments which generate acoustic emission signals from a crack growing in a specimen such that the ...
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