... of our valuable infrastructure. soils soil testing soil corrosivity resistivity redox mic electrochemical testing corrosion probes electrolyte field testing corrosion monitoring 217 Chapter 14 | Soils Mike Horton,1 Lucien Veleva,2 and Edward Escalante3 Description of Soils DEFINITION...

... The relation between resistivity and mechanical properties, such as hardness and the ductile-brittle transition temperature (DBTT), in heat-affected zone (HAZ) of welded A533B pressure vessel steel (PVS) has been investigated by means of a small specimen test technique before and after neutron...

.... latex modified concrete overlay cathodic protection anode titanium mesh resistivity styrene-butadiene rubber latex acrylic latex anode reaction product bridge decks parking garages John J. Bartholomew I EVALUATION OF LATEX MODIFIED CONCRETE OVERLAYS FOR CATHODIC PROTECTION SYSTEMS REFERENCE...

... could be used to determine near-surface density variations in the billets. Multiple nondestructive evaluation (NDE) techniques (eddy current, ultrasonics, and resistivity) could be employed to quantify microstructural characteristics of composite extrusions. These results indicate that NDE methods can...

... at some distance adjacent to the borehole, and estimates of water quality or water chemistry can be made by measuring the resistivity or specific electrical conductivity of the water in pore spaces. Most geophysical logs, however, are made in test holes filled with drilling fluid. In this environment...

... The state of the art in soil corrosivity testing was evaluated, with particular emphasis on field and in-situ tests that can be performed with reasonable accuracy by nonscientific personnel. Parameters reviewed include resistivity, pH, redox potential, moisture content, chloride levels...

...? What did we learn from the Shepard cane, Columbia rod, and Putman's apparatus? Who was Wenner, anyway? acidity bacteriological corrosion history redox resistivity soil corrosion soil maps statistical analysis John H. Fitzgerald, 1111 The Future as a Reflection of the Past REFERENCE...

...: resistivity, pH, redox potential sulfides, moisture, and chlorides. Metallurgical test results illustrating the mechanism of attack on cast iron and ductile iron are presented and the apparently different performance of the two materials is reviewed. Mitigative and preventive measures are mentioned...

... of these sites clearly illustrate how the actual dynamics of a contaminant plume can be assessed as it interacts with natural and man-induced variables. in situ time series ground-water monitoring geophysics electrical methods resistivity electromagnetic conductivity ground-water contamination...

... By using the ordering alloy Cu 3 Au and measuring resistivity changes during and following fast-neutron irradiations under well-controlled conditions in the Radiation Effects Facility at the Intense Pulsed Neutron Source at Argonne National Laboratory, we have studied cascade defect production...

... The calculation of resistivity profiles (and carrier density profiles) from spreading resistance requires the use of a correction factor. The present status of the calculation of the correction factor based upon the Schumann and Gardner multilayer solution of Laplace's equation is reviewed...

... A successful transition to 200mm wafers requires careful monitoring of substrate quality and rapid feedback on process performance. Sheet resistance mapping will play a key role in this transition because it allows precise control of repeatability and uniformity for a wide range of processes...

... A four-electrode resistivity probe was successfully designed for use in the upper layers of unconsolidated submarine sediments, with emplacement by vibratory driving. Measurements with this probe in calcareous sediments off the southeast coast of Florida indicate an average conductivity of 1.0...

... Theoretical calculations have been made for the resistivity (and its reciprocal, the conductivity) of pure water in the vicinity of the neutral point at 25°C. A surprising result is that the maximum resistivity is not found at pH 6.998, which corresponds to absolute water, but at pH 7.039, which...

... The spreading resistance method is uniquely suitable for the determination of electrical resistivities in a number of situations. However the technique does not simply measure the resistivity beneath the contacts. Considering the two probe configuration, what is actually measured is the ratio ΔV...

... The effects of sample boundaries on resistivity measurements made with a two-point spreading resistance probe are calculated for various boundary conditions. The results are presented in the form of dimensionless correction factors. The problem of depth-dependent resistivity in a thin layer...

... Spreading resistance measurements provide a highly flexible technique for the determination of dopant profiles in semiconductors. However, because each measurement samples a greater depth into the sample than the depth difference between successive measurements, the direct conversion...

... An automated spreading resistance test facility has been designed and constructed at the Allentown Works of the Western Electric Co. This system has been shown to provide a rapid, semi-nondestructive, and reproducible measurement of epitaxial layer resistivity which can be used in a production...

... of fast neutron (E > 1 Mev) radiation, vacuum in the 10 −6 torr region, and temperatures of +25 C to −190 C. Capacitance, dissipation factor, and volume resistivity were determined for speciments of vinylidene fluoride, melamine resin, polycarbonate plastic, and silicone resin. A table summarizing...

...), a dielectric rod technique is employed. capacitance cavity resonators conductivity dielectric constant dielectrometers dissipation factor radiation loss tangent microwaves millimeter waves permittivity radiation effects resistivity resonance space environment ultraviolet radiation vacuum...