نتایج جستجو برای: microstructure noise
تعداد نتایج: 234492 فیلتر نتایج به سال:
During ultrasonic inspection for flaws in engineering materials, it is important to understand the interactions between the inspecting beam and the microstructure in which flaws are embedded. It has been found that in certain materials such interactions can have dramatic effects on the characteristics of the beam as it propagates to and from a flaw and consequently can have deleterious effects ...
In this work, we experimentally investigate the effect of a grating based pulse stretcher/compressor on the carrier-envelope phase stability of femtosecond pulses. Grating based stretcher-compressor (SC) setups have been avoided in past demonstrations of chirped pulse amplification (CPA) of carrier envelope phase (CEP) stabilized femtosecond pulses, because they were expected to introduce signi...
Ultrasonic imaging has been an essential tool for nondestructive evaluation of materials and flaw detection. However, flaw detection in the presence of microstructure scattering noise is a challenging problem. This chapter presents frequency-diverse ultrasonic detection algorithms which are essential to decorrelate the microstructure scattering noise and to enhance the visibility of echoes asso...
Accurate determination of geometrical and physical properties of natural porous materials is notoriously difficult. Continuum multiscale modeling has provided carefully calibrated realistic microstructure models of reservoir rocks with floating point accuracy. Previous measurements using synthetic microcomputed tomography (μ-CT) were based on extrapolation of resolution-dependent properties for...
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