English to German Science Materials (Plastics, Ceramics, etc.) Klebstoffe

Under these conditions, commercial adhesives can crack or blister, which results in side seal leakage and end seal leakage (often referred to as “veining” or “lightning bolt” failure) of the feed fluid to the permeate collection tube.
Osmotic blistering in reverse osmosis membranes utilizing the present adhesive composition is reduced or prevented, thereby reducing or preventing veining and lightning bolt failures previously observed.

Ich übersetze gerade ein Patent, das von Polyurethanklebstoffen für Umkehrosmosemodule handelt. Die beiden Begriffe "veining" und "lightning bolt" als Versagensmechanismen kenne ich nicht.