Nondestructive quality assurance testing of chemically processed wood

Abstract

This paper presents a nondestructive testing method to measure the depths of the penetration of preservatives in treated wood. It also shows that it is feasible to correlate impedance changes in an eddy current response with the physical characteristics of chemically processed wood. Experimentally this will be a accomplished by using the eddy current test system at varying frequencies to collect data (impedance changes of the test probe) from test samples having different concentrations and depths of penetration of preservatives. This data will be used to show the correlation between impedance changes due to variations in the penetration and concentration of preservatives in treated wood.

Examining gyroscopes for 3-D position tracking in a non-destructive evaluation system

“…The eddy current method has been used in several industries, including space [1,2] and chemical processing [3,4]. Some specific applications include detection of cracks [5,6,7,8,9], measurements of material thickness [10], determining metal thinning due to corrosion [11], measurements of coating thickness [12], conversion coating [13], determining electrical conductivity [14], heat damage detection [3], and detection of corrosion in heat exchanger tubes [4]. This paper presents progress in the development of an eddy current prototype that combines positional and eddy-current data to produce a visual representation of materials being tested [15].…”

Non-destructive Evaluation and Flaw Visualization Using an Eddy Current Probe

“…The eddy current method has been used in several industries, including space [1,2] and chemical processing [3,4]. Some specific applications include detection of cracks [5,6,7,8,9], measurements of material thickness [10], determining metal thinning due to corrosion [11], measurements of coating thickness [12], conversion coating [13], determining electrical conductivity [14], heat damage detection [3], and detection of corrosion in heat exchanger tubes [4]. This paper presents the development of an eddy current prototype that combines positional and eddy-current data to produce a visual representation of materials being tested.…”