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ISOTOPIC RADIATION METHOD AND APPARATUS FOR MEASURING THE RESINOUS BINDER APPLIED TO A MAT OF GLASS FIBERS
ISOTOPIC RADIATION METHOD AND APPARATUS FOR MEASURING THE RESINOUS BINDER APPLIED TO A MAT OF GLASS FIBERS
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机译:用于玻璃纤维毡的树脂结合剂的同位素辐射测定方法和装置
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摘要
A traveling mat (10) of glass fibers that have been coated with a resinous binder is measured so as to determine quantitatively the mass of binder per unit area of the mat, by directing into the traveling mat gamma rays (26) from a first radiation source (28) comprising americium- 241 isotope, also directing into the traveling mat isotopic X- rays (30) from a second radiation source (32) comprising curium-244 isotope, detecting (at 22) the gamma rays from the traveling mat to produce a first response (R.sub.A), detecting (at 24) the isotopic X-rays from the traveling mat to produce a second response (R.sub.C) and forming (at 48) a combination of the first and second responses so as to produce a third response (B) that is indicative of the mass of the binder and substantially independent of the mass of the glass fibers.
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