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Plain bearings - Metallic multilayer plain bearings - Part 3: Non-destructive penetrant testing
This document specifies a non‑destructive penetrant testing for determining bond defects and discontinuities in the sliding surface of the bearing.
The penetration method is used to detect:
The penetration method is applicable, in principle, to finished multilayer plain bearings.
The bond test is usually carried out on cast multilayer plain bearings, with a backing consisting of steel, cast steel or cast bronze. It can also be used as a non-production method to aid detection of manufacturing process defects with other bearing material types.
Bearing backings which cannot be tin-plated, or only with difficulty, such as perlitic cast iron, rust-resistant steel and cast aluminium, cannot be tested since no bond is possible between the bearing material and bearing backing.
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