Title

Development of a Nondestructive Testing Technique to Determine Flaw Criticality

Date

1972

Index Abstract

Coming Soon

Photo Quality

Complete

Report Number

AFML TR 71-218

Creator

Hartbower, C. E.

Reuter, W. G.

Crimmins, P. P.

Morais, C. F.

Corporate Author

Aerojet Solid Propulsion Company

Laboratory

Air Force Materials Laboratory

Extent

240

Identifier

AD0747225

Access Rights

Approved for public release; distribution unlimited

Distribution Classification

1

Contract

F33615-68-C-1705

DoD Project

None Given

DoD Task

None Given

DTIC Record Exists

No

Distribution Change Authority Correspondence

None

Date Modified

Scanned by request 9/10/2007 submitted by Windalco /Ewarton Works (Other Industry - International)

Abstract

The report presents the findings of a study to develop a nondestructive testing technique to determine flaw criticality based upon stress-wave emission. The research included an evaluation of various sensors and instrumentation systems, and several materials and material conditions tested to failure in rising load and low-cycle, high-stress-intensity fatigue. The fracture testing utilized a linear-elastic fracture-mechanics approach. Acoustic emission was the basis of the nondestructive inspection technique. The stress-wave-analysis technique (SWAT) was shown to be a highly sensitive nondestructive inspection method, capable of detecting growing defects at least an order of magnitude smaller than any other known NDI method and, with a computerized system, capable of locating one or more defects in real time.

Report Availability

Full text available

Date Issued

1972-01

Provenance

Lockheed Martin Missiles & Fire Control

Type

report

Format

1 online resource