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Showing 1 to 9 of 9 for “"Energy Velocity"”.
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Estimation of Adhesive Bond Strength in Laminated Safety Glass Using Guided Mechanical Waves
Based upon the guided wave energy velocity predictions for each of the laminates with different levels of adhesion, the S0 mode was selected as the most promising for use in nondestructively estimating adhesion levels in laminated safety glass. The predicted energy velocities (obtained using this …
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Fundamental Limits on Antenna Size for Frequency and Time Domain Applications
… In order to understand antenna radiation and energy storage mechanisms, classical and alternative viewpoints of radiation are discussed. Unlike the common sense of classical antenna radiation, it is shown that the entire antenna fields contribute to both radiation and energy storage with …
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Damage Assessment and Strength Predictions in S-Glass/Epoxy Laminates Subjected to Low Energy Impact
… brittle and are thus prone to impact damage. Low energy/velocity impact damage, in particular, can be dangerous because the damage oftentimes goes undetected and can subsequently grow under load. Also known as barely visible impact damage (BVID), this area of concentration focuses on the …
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Double Negative Metamaterials in Dielectric Waveguide Configurations
… into two separate modes, one with positive phase velocity and one with negative phase velocity but both with a causal positive group (energy) velocity. Next, the formulation is applied to the five-layer waveguide. New behaviors are observed in this case which are not seen for the three-layer …
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Monitoring of Overhead Polymer Core Composite Conductors Under Excessive Mechanical Loads Using Fiber Bragg Grating Sensors
… and in-service.</p> <p>Transverse low-velocity impacts to the ACCC® conductor having either free or constrained end conditions and large axial tensile loads were performed. It was identified that the most damaging condition under impact is when the conductor had free ends and was thus …
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Reproducing and Quantifying Spatial Flow Patterns of Ecological Importance with Two-Dimensional Hydraulic Models
… typically have highly complex flow patterns. Velocity gradients, circulation zones, transverse flows, and other flow patterns are created in the presence of topographic features (e.g. exposed boulders, bars). How flow complexity influences a stream's ecological health and morphological …
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Adhesion quality control of laminated safety glass using ultrasonic velocity and attenuation measurements
Item reinstated by Sarah Shreeves (sshreeve@illinois.edu) on 2014-02-01T11:00:28Z Item was in collections: Graduate Theses and Dissertations at Illinois (ID: 204) Dissertations and Theses - Industrial and Enterprise Systems Engineering (ID: 752) No. of bitstreams: 4 Suchy_Thomas.pdf.txt: 215112 …
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Three-dimensional turbulence mechanisms in a supersonic separated/reattaching longitudinal cylinder wake
… (SPIV), which measures all three components of velocity along a large planar region, and tomographic PIV (TPIV), which measures all three components of velocity throughout a volumetric region. Large ensembles of measurement samples were acquired and processed for each set of experiments, which …
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A study on the behaviour of guided wave propagation in utility timber poles
… In GW, the velocities of a wave (such as phase velocity, group velocity, energy velocity) become a function of frequencies (i.e. wave dispersion behaviour) and displacement magnitude varies when waves propagate along the pole. Besides, GWs that have the same frequencies possess shorter …