Wide-Width Strip Method

EN ISO 10321 2008. Geosynthetics — Tensile test for joints/seams by wide-width strip method. 

ASTM D4595 Standard Test Method for Tensile Properties of Geotextiles by the Wide-Width Strip Method. 

ISO 10321 Geosynthetics Tensile Test for Joints/Seams by Wide-Width Strip Method. 

In order to develop more informative and direct method of studying the spillover effect of active particles, the authors of [37] suggested to use the sensor method of detecting migrating particles based on separation of sensor and emitter (donor) of active particles. The latter consists of small metal globules, or clusters (with a diameter of about 20-30 A) of Pt, Pd, Ni, etc. (activator) deposited on quartz or sapphire (AI2O3) plate in the form of a strip less than 1 cm wide. The sensor for detection of hydrogen atoms consisted of a zinc oxide strip (with a width of about 0.1 cm and thickness wlOO nm) deposited on the same plate at a distance of 0.03 or 0.6 cm (two versions) from the inner boundaries of activator strips [38]. 

A major disadvantage of manual methods is that the accuracy of each measurement relies on the individual performing the calculations and on where the tangents or baselines are drawn, which may differ from one peak to the next within an analysis. If strip-chart recorders are used, all the peaks must be contained on the chart paper. This severely limits the dynamic range of solute composition that can be analyzed. In addition, the chart speed must be fast enough so that, for measurements based on peak width, narrow peaks are wide enough for accurate measurement. 

Vacuum jackets provide satisfactory insulation up to 150°C or more if they are evacuated to 10 —10 mm Hg [112]. They are usually silvered inside to reduce radiation. The quality of the silver layer has a great influence on its efficiency. A strip of 5—10 mm width is often left clear in the silvering for purposes of observation, but it should preferably be only 2 mm wide. A much better method is to place metal... 

Five-millimeter wide strips of foil, 100 microns in thickness, were inserted between the inner walls of the tube and the glass strips. In this manner, the model formed a system of parallel strips, SO cm in length. The width of the fractures varied depending on their position along the cross section of the tube. The openings within these cracks were 100 microns wide, corresponding to the presumed size of fracture opening in the real reservoir of the fracture type. Fracture porosity of such models calculated by the method of material balance equation was 13.5%. 

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