Accession Number:

AD0832042

Title:

THE APPLICABILITY OF A FRACTURE MECHANICS-NONDESTRUCTIVE TESTING DESIGN CRITERION

Descriptive Note:

Technical rept. 1 Jan-31 Dec 1967

Corporate Author:

LOCKHEED-GEORGIA CO MARIETTA MATERIALS SCIENCES RESEARCH LAB

Personal Author(s):

• Packman, Paul F.
• Pearson, Hugh S.
• Owens, John S.
• Marchese, Gloria B.

Report Date:

1968-05-01

Pagination or Media Count:

288.0

Abstract:

This report describes the work conducted on a program designed to investigate the potential applicability of a combined fracture mechanics- nondestructive inspection procedure as a design approach for aircraft structures. The program consisted of three phases, conducted simultaneously 1 a literature survey to determine if sufficient fracture toughness information exists to determine a statistically valid value of K1c 2 a test program to determine the minimum size of a crack that can be detected by each of four NDT methods X-ray, magnetic-particle, penetrant, and ultransonics and 3 a test program to determine if fracture mechanics, when combined with flaw size as determined by NDT, can accurately predict the failure load of selected structures.

Descriptors:

• *NONDESTRUCTIVE TESTING
• *FRACTURE(MECHANICS)
• *AIRFRAMES
• COMPUTER PROGRAMS
• PREDICTIONS
• LOADS(FORCES)
• REPORTS
• CRACK PROPAGATION
• ULTRASONIC PROPERTIES
• ENDURANCE(PHYSIOLOGY)
• PENETRATION
• ACCURACY
• TEST METHODS
• CRACKS
• STATE OF THE ART
• DETECTION

Subject Categories:

• Aircraft
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE