Results 281 to 290 of about 315,886 (312)
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Insight - Non-Destructive Testing and Condition Monitoring, 2003
Guided wave inspection has a number of advantages over conventional ultrasonic inspection. For instance, guided waves can propagate over many tens of metres in rail, they can fully penetrate alumino-thermic welds and theyare very sensitive to cracks in the transverse-vertical plane that may cause catastrophic failure.
Wilcox, PD +6 more
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Guided wave inspection has a number of advantages over conventional ultrasonic inspection. For instance, guided waves can propagate over many tens of metres in rail, they can fully penetrate alumino-thermic welds and theyare very sensitive to cracks in the transverse-vertical plane that may cause catastrophic failure.
Wilcox, PD +6 more
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Test field in a sandwich wave spacetime
Classical and Quantum Gravity, 1997Summary: Sandwich waves in the Einstein-Maxwell theory are expressed globally by introducing step functions at the boundaries. We show that a test particle crossing such a wave zone extracts energy from the sandwich wave.
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Test Wave Approach 3. Generation of Plasma Waves
2002In this chapter we will study particle distribution functions f a 0 (p) that lead to solutions of the dispersion relation with positive values of the imaginary part of the wave frequency, Γ > 0, and thus give rise to growing fluctuations. We will start out from the classical two-stream instability and then study in detail cosmic-ray-induced ...
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Millimeter wave tests and instrumentation
65th ARFTG Conference Digest, 2005. Spring 2005, 2005The recent growth in millimeter wave applications has created a corresponding demand for millimeter wave tests and instrumentation. Network analyzers, signal analyzers, signal generators, power meters and noise figure analyzers were discussed in this article. Optimum choice of instrumentation for specific applications were also be presented.
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Structural Engineering International, 1994
Ideas for wave power machines have existed for centuries but have rarely advanced beyond the drawing board. The technology needed to exploit the power of the waves commercially has not been sufficiently developed. A multi-disciplinary technical effort is required to achieve this goal.
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Ideas for wave power machines have existed for centuries but have rarely advanced beyond the drawing board. The technology needed to exploit the power of the waves commercially has not been sufficiently developed. A multi-disciplinary technical effort is required to achieve this goal.
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Searches for continuous-wave gravitational radiation
Living Reviews in Relativity, 2023Keith Riles
exaly
To Test the Wave is to Test Life
Journal of Health, Physical Education, Recreation, 1969openaire +1 more source