NASA NTRS · 19790000524
Detecting insulation defects in metal/plastic films
Abstract
Simple apparatus checks insulation between plastic and metal surfaces. Film can be inspected more accurately; apparatus can spot minute electrical contaminants between plastic and metal films. Steel roller connected to high-range ohmmeter is guided over entire plastic area of test sample. Roller weighs 2 lb. (0.9 kg), which effectively translates into 250-psi (1.76X10 to 6th power -N/sq m) contact pressure at plastic surface sufficient to locate microscopic defects.
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Buggle, R. N.. 1980-06-01. Detecting insulation defects in metal/plastic films. https://ntrs.nasa.gov/citations/19790000524
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