Accession Number:

AD0604407

Title:

SIMULTANEOUS APPLICATION OF STATIC AND DYNAMIC LOADS ON SONIC FATIGUE TEST ARTICLES

Descriptive Note:

Rept. for Jun 1962-Jun 1963

Corporate Author:

NORTHROP CORP HAWTHORNE CA NORAIR DIV

Personal Author(s):

Report Date:

1964-06-01

Pagination or Media Count:

112.0

Abstract:

With the existence of the RTD sonic test facility, it becomes necessary to investigate the requirements for reliability fatigue testing during the simulated application of static, dynamic, and acoustic service loadings. The report includes the findings of an extensive investigation of previous combined load failures, documents the existence of such failures and suggests possible future problems based on an industry-wide survey of actual case histories. Analytical substantiation of the increased probability of failure and theoretical acoustic considerations are presented to indicate that combined loads do present a particular problem area. The simulation of static, dynamic, and acoustic loads is discussed in terms of general principles which must be taken into consideration, and general testing methods applicable to difficult and costly vehicle fatigue problems. Limitations and possible future extensions to the RTD sonic test facility are discussed and recommendations presented. Seven specific testing arrangements which have been developed for combined loads simulation of several selected cases are described and illustrated. Author

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE