Nondestructive Testing Techniques for Diffusion Bonded Titanium Structures.

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Abstract:

This report describes the establishment of nondestructive testing techniques for diffusion bonded structures fabricated from Ti-6Al-4V sheet and forgings. Ultrasonic shear waves, radio frequency and signal-averaged pulse-echo techniques, x-ray, fluorescent penetrant, and blue-etch-anodize were used to inspect a series of diffusion bonded defect specimens. Analysis of NDT, mechanical property, and fractographic data indicated that shear wave inspection of the sheet material could be correlated with the observed decrease in fatigue life with deflect concentration. Shear strength of the sheet specimens was not affected by the presence of the internal defects to any measurable degree. Grain structure noise limited inspectability of the small 0.006-in. dia. defects in the diffusion bonded forging. Author

Author(s):
Regalbuto, John A.
Author Organization(s):
GENERAL DYNAMICS FORT WORTH TEX CONVAIR AEROSPACE DIV
Descriptive Note:
Final rept. 1 Dec 72-1 Oct 73,
Pagination:
0130

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
GIDEP-E043-2093, GIDEP-556.45.30.00-EO-01
Contract/Grant Number(s):
DAAG46-73-C-0067
Project Number(s):
DA-1728041
Monitor Series:
E043-2093, 556.45.30.00-EO-01
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*Titanium alloys, *Nondestructive testing, *Diffusion bonding, Aluminum alloys, Vanadium alloys, Ultrasonic tests, X rays, Etching, Fractography, Defects(Materials), Fatigue(Mechanics)
Field(s)/Group(s):
Metallurgy and Metallography, Test Facilities, Equipment and Methods
Keyword(s):
Titanium alloy 6Al 4V
Report Date:
1973 Dec 01