FIBER LENGTH MEASUREMENT By Bilal Ahmad Jan

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HVI-Spinlab• The system functions by passing a combedsample of fibers, which are assumed to be• Caught at random along their lengths, under adetection device.• The resulting fiber beard is scanned from baseto tip• The amount of light passing through thebeard is used to measure, indirectly, thenumber of fibers that extend to variousdistances.• Use for short length fiber at approximately0.15 to 0.20 inches
Measurement Error• Fiber is caught in the comb in proportionto its length.• Secondly, the detection device does notscan the random along their lengths.HVI-MCI• The system utilizes air pressure and an orifice tomeasure the pressure drop across the orifice asthe fiber specimen is passed through.• <strong>By</strong> assuming that the fibers are uniform in crosssection,the pressure drop is a measure of thenumber of fibers in the path of the airflow.
Page 1 and 2: FIBER LENGTHMEASUREMENTByBilal Ahma
Page 3 and 4: Example• Wheel of Motor-Cycle is
Page 5 and 6: Method• First the fiber is dip in
Page 7 and 8: Scanning Methods• Give quicker re
Page 9 and 10: • (iii) A gauging apparatus with
Page 11 and 12: Cutting-And Weighing Methods• Mat
Page 13 and 14: METHOD 1• i) That all fibers are
Page 15 and 16: • The length L1 and L2 arepredete
Page 17: • W1+W2=nL”w,L”=(W1+W3)/nw•
Page 21 and 22: Graph B/t V and TPLANT FIBER LENGTH
Page 23: • System Diagram

FIBER LENGTH MEASUREMENT By Bilal Ahmad Jan

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