Title

Properties Of Glasses At Elevated Temperatures

Date

1964

Index Abstract

Coming Soon

Photo Quality

Not Needed

Report Number

WADC TR 56-645 Part 9

Creator

Kerper, M. J.

Eimer, E. H.

Scuderi, T. G.

Corporate Author

National Bureau of Standards

Laboratory

Materials Laboratory

Extent

23

NTRL Accession Number

AD442749

Identifier

AD0442749

Access Rights

ASTIA

Distribution Classification

1

Contract

DO 33(657)62-362

DoD Project

7381

DoD Task

738103

DTIC Record Exists

No

Distribution Change Authority Correspondence

AFWAL LTR

Abstract

In order to establish realistic design criteria applicable to selected oxide glasses having utility as viewing windows in Air Force vehicles, certain physical properties have been determined throughout the useful temperature range of these glasses. Temperatures below which no creep was detected for annealed specimens at stresses of 33% of the average modulus of rupture are reported for five of the glasses in the program. The relationship of the area under stress to the strength for annealed plate specimens was investigated. It was found that: (1) fracture originates randomly throughout the area of uniform stress, (2) the strength decreases as the area under maximum stress increases, and (3) specimens that fracture at the edge are generally weaker than those that fracture at the surface.

Report Availability

Full text available

Date Issued

1964-03

Provenance

IIT

Type

report

Format

1 online resource