Accession Number:

AD0754762

Title:

An Experimental Technique for Monitoring Dynamic Cracks

Descriptive Note:

Corporate Author:

MONSANTO RESEARCH CORP ST LOUIS MO

Personal Author(s):

• Lavengood, R. E.
• Peretz, D.
• Brissey, F. L.
• Wu, E. M.

Report Date:

1972-10-01

Pagination or Media Count:

22.0

Abstract:

A technique is presented which, by means of plating and etching processes, permits the creation of a wide variety of crack propagation gages. High precision gages of arbitrary size and shape are easily prepared. Specific gage configuration are shown for center notch, edge notch and cleavage type specimens. Optimum gage design is discussed and typical readout circuits are shown. Author

Descriptors:

• *CRACK PROPAGATION
• *MONITORS
• COPPER
• CRACKS
• ETCHING
• MEASURING INSTRUMENTS
• METAL FILMS

Subject Categories:

• Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE