Engineering topics

Hollar, W. T.

Publications and source records attributed to Hollar, W. T..

2 records

NASA NTRS1967

Steel test panel helps control additives in pyrophosphate copper plating

Test panel helps control maximum tolerance level for plating solution contaminants. It provides low, medium, and high-current density areas such as exist in production plating, and plating is examined for uniformity of texture and ductility.

Hollar, W. T.↗

NASA NTRS1967

Liquid crystals detect voids in fiber glass laminates

Liquid crystal solution nondestructively detects voids or poor bond lines in fiber glass laminates. A thin coating of the solution is applied by spray or brush to the test article surface, and when heated indicates the exact location of defects by differences in color.

Hollar, W. T.↗