Radioactive Tracer Technique for Tool Wear Studies |
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Page 6
... Specific Activity . The amounts of pure radioactive sub- stances with which we come into contact , especially in isotope work , are very small . For practical purposes the term specific activity is used to express the rate at which unit ...
... Specific Activity . The amounts of pure radioactive sub- stances with which we come into contact , especially in isotope work , are very small . For practical purposes the term specific activity is used to express the rate at which unit ...
Page 53
... specific activity of tip material 24.0 mc / gm 16.0 mc / gm 10.6 mc / gm . 1 tracer at that time . The presence of. Table 4-2 . Characteristics of Effective Tracer Radioisotopes Resulting from Irradiation of Various Tool Materials 20 ...
... specific activity of tip material 24.0 mc / gm 16.0 mc / gm 10.6 mc / gm . 1 tracer at that time . The presence of. Table 4-2 . Characteristics of Effective Tracer Radioisotopes Resulting from Irradiation of Various Tool Materials 20 ...
Page 58
... ACTIVITY - cpm ( relative ) CUTTING SPEED = 591 fpm 200 WORK FEED 0.0036 in per rev . tubular workpiece · 0.200 inch wall thickness SAE 8650 stool TOOL carbide ( grade - 78 ) Orake , 7 clearance approx . specific activity 6.5 ...
... ACTIVITY - cpm ( relative ) CUTTING SPEED = 591 fpm 200 WORK FEED 0.0036 in per rev . tubular workpiece · 0.200 inch wall thickness SAE 8650 stool TOOL carbide ( grade - 78 ) Orake , 7 clearance approx . specific activity 6.5 ...
Common terms and phrases
ABSORBER absorption AISI alpha particles alpha rays atomic number autoradiographs Be⁹ beam beta and gamma beta particles bombarding particle charged particles chemical chips Colding and Erwall compton effect counts per minute cross section Curie curve cutting fluid cutting speed cutting tool decay detector determine disintegrations dose electrons element emitted emitters G G G gamma radiation gamma rays investigation ion pairs irradiation isotope kinetic energy krypton linear machining mass number material transfer mc/gm measured method neutron flux nuclear cross section nuclear radiation nuclear reactions nucleus number of atoms number of neutrons obtained percent photoelectric effect plot positrons protons PULSE HEIGHT radioactive tool radioisotopes reactor reference source relative tool scintillation counter shown in Figure specific activity specific ionization steel target technique thermal neutron tips tool life testing tool material tool wear studies tube tubular workpiece values wear land wear particles wear products wear rate