Title

Establishment of the Approach to, and Development of, Interim Design Criteria for Sonic Fatigue

Description

A literature survey provided the background from which an approach was selected for development of design criteria for sonic fatigue. The approach selected was accelerated, discrete frequency life-testing, the results of which are interpreted using a sine-random equivalence analysis. This approach offers the best compromise between economy, accuracy, and lead time to cover structural design problems for advanced design, design development, and prooftesting of completed vehicle structure. Methods were extracted from the literature with which to predict the acoustic environment and determine the duration of various environments from mission analysis. Fatigue data and an examination of cumulative damage are presented in support of the sine-radom equivalence technique. This method takes advantage of the extensive fatigue S-N data available in the industry. Examples of the application of the anaytical-empirical techniques are presented.

Index Abstract

Not Available

Photo Quality

Complete

Report Number

ASD TDR 62-26

Index Price

OTS price $3.00

Report Availability

Full text available

Creator

Fitch, G. E.

Dutko, T. R.

Brennan, L. M.

Tipton, A. G.

Belcher, P. M.

Wang, P.

Clawson, P. A.

Extent

154

Corporate Author

North American Aviation, Inc.

Laboratory

Flight Dynamics Laboratory

Identifier

AD0284597

Contract

AF 33(616)-7694

DoD Project

1370

DoD Task

137001

Distribution Conflict

No

Access Rights

OTS

Distribution Classification

1

DTIC Record Exists

Yes

Date

1962

Index In

U.S. Government Research Reports, Vol. 38, No. 1, January 5, 1963, p. 1

AD Number

AD-284 609

Date Issued

1962-06

Abstract

A literature survey provided the background from which an approach was selected for development of design criteria for sonic fatigue. The approach selected was accelerated, discrete frequency life-testing, the results of which are interpreted using a sine-random equivalence analysis. This approach offers the best compromise between economy, accuracy, and lead time to cover structural design problems for advanced design, design development, and prooftesting of completed vehicle structure. Methods were extracted from the literature with which to predict the acoustic environment and determine the duration of various environments from mission analysis. Fatigue data and an examination of cumulative damage are presented in support of the sine-radom equivalence technique. This method takes advantage of the extensive fatigue S-N data available in the industry. Examples of the application of the anaytical-empirical techniques are presented.

Provenance

Bombardier/Aero

Type

report

Date Modified

Scanned and posted 2023-09-19