Title :
The Detection of Barrel Cracks in Plated Through Holes using Four Point Resistance Measurements
Author_Institution :
Bell Laboratories, Whippany, New Jersey 07981, (201) 386-3000
Abstract :
The influence of voltage and current probe connections on the detection of barrel cracks and similar flaws in plated through holes is discussed. Theoretical calculation of the sensitivity of a four point resistance measurement to the length of a barrel crack is compared to experimental results for a variety of current voltage probe configurations.
Keywords :
Current density; Current distribution; Current measurement; Electrical resistance measurement; Nonhomogeneous media; Probes; Size control; Strips; Testing; Voltage;
Conference_Titel :
Reliability Physics Symposium, 1976. 14th Annual
Conference_Location :
Las Vegas, NV, USA
DOI :
10.1109/IRPS.1976.362733
