A positive-replica technique for examining finished metal surfaces and its application to aircraft-engine cylinders

Author / Creator

Clark, Thomas P., author

Available as

Online

Summary

It is often desirable to have a permanent and accurate record of the surface-finish of aircraft-engine parts subject to wear. In many cases, a photomicrograph of the desired surface cannot be made ...

It is often desirable to have a permanent and accurate record of the surface-finish of aircraft-engine parts subject to wear. In many cases, a photomicrograph of the desired surface cannot be made without sectioning the specimen. This sectioning is often inadvisable because the specimen may be needed for further tests. Special cameras have been devised for taking photomicrographs of otherwise inaccessible surfaces, but the mechanical difficulties and the expense of such instruments have necessitated the adopted of other methods, such as the use of thin-film replicas.

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