Dielectric Properties of Wood and Wood-Based Materials by Grigoriy I. Torgovnikov

By Grigoriy I. Torgovnikov

Provided here's a accomplished treatise on all features of dielectric homes of wooden and wooden items. the themes coated comprise: interplay among electromagnetic box and wooden. - wooden composition and dielectric homes of its parts. - dimension of dielectric parameters of wood.- Dielectric homes of oven-dry wooden. - Dielectric houses of wet wooden. - impact of other different types of remedy on dielectric houses of wooden. - Dielectric houses of bark. - Dielectric homes of wood-based fabrics. - techniques for selection of dielectric parameters of wooden dependent fabrics and for his or her use in calculations. numerous appendices contain reference facts onthe dielectric features of wooden and wood-based fabrics within the wide selection of frequencies, temperatures, and moisture content.

Show description

Read or Download Dielectric Properties of Wood and Wood-Based Materials PDF

Best trees books

Dictionary for Managing Trees in Urban Environments

Dictionary fo handling timber in city Environments encompasses a complete record of phrases utilized in the common administration of city trees.
Many of the phrases are from arboricultural technology, whereas others are derived from unproven yet mostly utilized strategies. the place the present terminology to explain timber used to be constrained or nonexistent, new phrases were introduced.
The dictionary allows vast software and use by means of a wide selection of individuals and conveys in undeniable language suggestions which are occasionally advanced. so much significant phrases were cross-referenced and diagrams were additional for higher realizing. whereas a couple of pertinent botanical phrases were incorporated, many phrases without difficulty came across inside of dictionaries of normal plant sciences and botany were omitted.
Dictionary for handling bushes in city Environments promotes a better realizing of arboriculture and concrete forestry, and may help in the coaching of news for the administration of bushes, tactics and making plans tools, resembling Tree administration guidelines and Tree administration Orders.
Comprehensive dictionary for dealing with city trees
Has vast software via different professions
Topic dependent with an index and pass references
Drawn from glossy examine from round the world
Provides terminology the place in a few situations none existed
Consolidates that means via vast pass referencing

Food spoilage microorganisms

The keep watch over of microbiological spoilage calls for an knowing of a few elements together with the information of attainable dangers, their most likely prevalence in numerous items, their physiological houses, and the supply and effectiveness of other preventative measures. nutrition Spoilage Microorganisms makes a speciality of the keep watch over of microbial spoilage and offers an realizing essential to do that.

Wild Urban Woodlands: New Perspectives for Urban Forestry

This ebook offers a primary evaluate of the phemonemon of post-industrial city desolate tract: city landscapes as soon as formed via heavy which are being re-colonized evidently via forests. those new different types of city woodlands are frequently neglected by means of ecologists, foresters and planners. person chapters think about city woodlands from the views of ecology, environmental sociology, forestry, nature conservation and panorama structure.

Dielectric Properties of Wood and Wood-Based Materials

Supplied here's a complete treatise on all points of dielectric homes of wooden and wooden items. the themes coated contain: interplay among electromagnetic box and wooden. - wooden composition and dielectric houses of its parts. - size of dielectric parameters of wooden. - Dielectric houses of oven-dry wooden.

Extra resources for Dielectric Properties of Wood and Wood-Based Materials

Sample text

The foil is-superimposed on the sample covered with silver paste and thoroughly rubbed to the sample surface to obtain a tight fit. A better method to achieve proper contact between the foil and the sample is described in the chapter dealing with the sample preparation process. Measuring devices for determining the dielectric parameters of materials at low frequencies are now being produced industrially. For the purpose of carrying out measurements at different temperatures, the industry manufactures speCial measuring chambers securing the specified stable temperature with deviations not exceeding ± 1°C.

Spark gaps are provided to protect the circuit in case of breakdown of the sample. 1) In order to read the indication directly, the scale of R3 should be calibrated in capacity units, and the scale of C 4 should be calibrated in the units of tg~. The dielectric loss tangent can be read directly from the instrument scale. When the instrument is not calibrated sufficiently, the value of tg~ can be calculated. 2) It is necessary to measure or to calculate the capacitance value of Co of the unit without the sample while preserving the geometrical dimensions.

014. 039 at 1011 Hz (Fig. 53 g/cm 3 ). 9 times (depending on the frequency). 34, the peak value being at 107 Hz (Fig. 53 g/cm 3 ). Specific values of the dielectric parameters of the cell wall in the frequency range from 102 to 1011 Hz at 20 DC and with the vector of electric field strength oriented in the transverse direction are given in Appendix 1. The DC of the cell wall increases with increasing temperature (Fig. 6a); the dependence is nearly linear. The dependence of the loss factor on the temperature at different frequencies is shown in Fig.

Download PDF sample

Rated 4.64 of 5 – based on 27 votes