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Abstract

Two acrylic-coated polymeric motorcycle components exhibited fisheye blemishes after painting. SEM and EDS results showed relatively high levels of sulfur and chlorine associated with the blemishes in both parts. This suggested some adherent residual substances, possibly in the form of processing fluids and/or cleaning agents, were left on the surface just prior to painting and resulted in the observed fisheye blemishes. One of the components also showed evidence of mechanical damage, in addition to detectable iron, which suggests that the part surface may have been damaged from contact with a ferrous material, such as a steel chip.

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S.J. Suess, 2019. "Fisheye Blemishes in Two Motorcycle Components", ASM Failure Analysis Case Histories: Automobiles and Trucks

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