Results 211 to 220 of about 197,256 (253)
Some of the next articles are maybe not open access.
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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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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A cochlear model for acoustic emissions
The Journal of the Acoustical Society of America, 1988Variability in cochlear emission properties among different species, particularly humans and small mammals, and within individuals in the same species, is modeled by a cochlear nonlinear transmission line. The difference between humans and animals is largely explained by a lower cochlear input impedance in human ears than in cats, gerbils, or ...
M. Lapid, Miriam Furst
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Acoustic emission properties of callus
Medical & Biological Engineering & Computing, 198111 New Zealand white rabbits with 45 degree midshaft oblique osteotomies were stressed in shear while monitoring acoustic emission events. The ringdown counting method demonstrated a reasonably reproducible pattern when counting events against load; that is, each fracture remained essentially quiet until over 50% of load to failure had been applied ...
Berg E, Nicholls Pj, Nicholls Pj
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2002
The quantity “acoustic emission” can only be defined in a qualitative way. An excellent formal definition can be found in [Miller and Mclntire 1987]: “Acoustic emission is the class of phenomena where transient elastic waves are generated by the rapid release of energy from localized sources within a material, or the transient waves so generated ...
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The quantity “acoustic emission” can only be defined in a qualitative way. An excellent formal definition can be found in [Miller and Mclntire 1987]: “Acoustic emission is the class of phenomena where transient elastic waves are generated by the rapid release of energy from localized sources within a material, or the transient waves so generated ...
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The Journal of the Acoustical Society of America, 1992
An acoustic emission waveguide (10) for holding a test sample (29) in a hostile environment and guiding ultrasonic waves to a transducer (34) disposed in a non-hostile environment. The waveguide (10) includes a flattened test sample attachment end (15) having a flat bar clamp (22) to hold test specimens (29) thereto.
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An acoustic emission waveguide (10) for holding a test sample (29) in a hostile environment and guiding ultrasonic waves to a transducer (34) disposed in a non-hostile environment. The waveguide (10) includes a flattened test sample attachment end (15) having a flat bar clamp (22) to hold test specimens (29) thereto.
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Acoustic emission and microcrack correlation
Philosophical Magazine B, 1998Abstract One peculiarity of acoustic emission (AE) is the scale invariance of some characteristic statistical quantities, which suggests that similar critical dynamics could rule the elastic relaxation process in different circumstances. In the present paper, after reporting some findings from recent experiments.
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Deconvolution for Acoustic Emission
1986A new technique is presented for deconvolution of time series (digitally recorded temporal waveforms) such as obtained in acoustic emission. The method, called cross-cut deconvolution, combines two different least squares methods—one completely new, the other a recently developed variant of singular valued decomposition—to produce a potentially robust ...
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The Journal of the Acoustical Society of America, 1997
The invention relates to an acoustic emission transducer and a coupling method. The acoustic emission transducer (1) forms an assembly unit and is intended specially for measuring high-frequency acoustic emissions (up to about 2 MHz). It consists of a piezoelectric measuring element (9), an acoustic transmission base (8) with a circumferential coupling
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The invention relates to an acoustic emission transducer and a coupling method. The acoustic emission transducer (1) forms an assembly unit and is intended specially for measuring high-frequency acoustic emissions (up to about 2 MHz). It consists of a piezoelectric measuring element (9), an acoustic transmission base (8) with a circumferential coupling
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2008
Wood, like many heterogeneous materials, provides many interesting AE challenges. It is a biological material that has evolved to perform many functions. It is anisotropic, and it is heterogeneous over a very wide range of length scales. It is hydroscopic, and its mechanical properties are extremely sensitive to moisture content.
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Wood, like many heterogeneous materials, provides many interesting AE challenges. It is a biological material that has evolved to perform many functions. It is anisotropic, and it is heterogeneous over a very wide range of length scales. It is hydroscopic, and its mechanical properties are extremely sensitive to moisture content.
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