Title

Research and Development on Advanced Graphite Materials. Volume XVII - Radiography of Carbon and Graphite

Date

1964

Index Abstract

Contrails and DTIC

Photo Quality

Incomplete

Report Number

WADD TR 61-72 Volume 17

Creator

Furnas, T. C.

Rosumny, M. R.

Corporate Author

Picker X-Ray Corp

Laboratory

Air Force Materials Laboratory

Extent

32

NTRL Accession Number

AD600339

Identifier

AD0600339

AD0600339

Access Rights

OTS

Distribution Classification

1

Contract

AF 33(616)-6915

DoD Project

7350

DoD Task

735002

DTIC Record Exists

Yes

Distribution Change Authority Correspondence

None

Report Availability

Full text available by request

Date Issued

1964-04

Abstract

A study was made to establish optimum exposure conditions for the radiographic detection of minimum size defects in thicknesses of graphite varying from four to sixteen inches. Through the use of grids and associated techniques, 0.5 per cent sensitivity or better was attained on high density graphite as follows:

4 in. Graphite -- 0.5 per cent sensitivity on M, single emulsion on M and HD films at 110 KV.

8 in. Graphite -- 0.4 per cent sensitivity on AA film at 150 KV.

12 in. Graphite -- 0.35 per cent sensitivity on HF film with Cobalt-60.

16 in. Graphite -- 0.3 per cent sensitivity on HD film with Cobalt-60.

Other parameters and techniques were investigated, such as direct X-ray magnification, screens, films, developers, and position of defect. The use of the grid made the greatest contribution towards an increase in sensitivity.

Subject

Graphite -- Radiography

Refractory Materials -- Radiography

Carbon

Thickness

Density

Quality Control

Sensitivity

Films

Collimators

Publisher

Wright-Patterson Air Force Base, OH : Air Force Materials Laboratory, Research and Technology Division, Air Force Systems Command

Distribution Conflict

No

Type

report

Provenance

Lockheed Martin Missiles & Fire Control

Bearcat

Format

32 pages ; 28 cm.