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Fatigue life estimation of welded joints of an aluminium alloy under superimposed random load waves (follow-up report). Effects of high frequency components; Jujo random kajuka ni okeru aluminium gokin yosetsu tsugite no hiro jumyo suitei (zokuho). Koshuha seibun no eikyo

Abstract

In order to examine fatigue behavior of boxing welded joints of anticorrosion aluminum A 5083 P-O alloy, the residual stress measurements, static loading tests, elastic finite element analyses, constant amplitude fatigue tests, and random fatigue tests were conducted. For a load wave in the random loading fatigue tests, a direct current component, a zero-mean narrow band random process, and a high frequency component were combined and superimposed, to examine the effect of the high frequency component and the effect of the stress cycle count method and the mean stress correction on the life estimation. For the fatigue analysis, a reference stress, such as that considering the structural stress concentration, was proved effective in reducing the amount of scattering in the fatigue test results and in improving the life estimation accuracy. Accordingly, for the actual scale measurements, it is insufficient only to measure the stress at points far from the crack initiation place. It is required to analyze the fatigue by measuring the reference stress same as the basic data acquisition tests in the laboratory. 4 refs., 21 figs., 4 tabs.
Authors:
Takahashi, I; Maenaka, H; Takada, A [1] 
  1. Ship Research Inst., Tokyo (Japan)
Publication Date:
Dec 31, 1996
Product Type:
Miscellaneous
Report Number:
ETDE/JP-mf-97721531
Reference Number:
SCA: 360103; 420500; 990200; PA: NEDO-96:913866; EDB-97:014901; SN: 97001718552
Resource Relation:
Other Information: PBD: Spr 1996; Related Information: Is Part Of Proceedings of the Spring Meeting of the Society of Naval Architects of Japan (1996). Part 2. Structure, materials, welding, construction, and design; PB: 219 p.; Nihon zosen gakkai (1996 nen) shunki koen ronbun maezuri. 2. Kozo, zairyo, yosetsu, kosaku, sekkei
Subject:
36 MATERIALS SCIENCE; 42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; WELDED JOINTS; DYNAMIC LOADS; ALUMINIUM ALLOYS; FATIGUE; LIFETIME; FREQUENCY DEPENDENCE; DESTRUCTIVE TESTING; STRESS ANALYSIS; DATA ACQUISITION; RESIDUAL STRESSES; STATIC LOADS; FINITE ELEMENT METHOD; STRESS INTENSITY FACTORS; CRACKS
OSTI ID:
414219
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97721531; TRN: 96:913866
Availability:
Available from The Society of Naval Architects of Japan, 15-16, Toranomon 1-chome, Minato-ku, Tokyo, Japan; OSTI as DE97721531
Submitting Site:
NEDO
Size:
pp. 413-423
Announcement Date:

Citation Formats

Takahashi, I, Maenaka, H, and Takada, A. Fatigue life estimation of welded joints of an aluminium alloy under superimposed random load waves (follow-up report). Effects of high frequency components; Jujo random kajuka ni okeru aluminium gokin yosetsu tsugite no hiro jumyo suitei (zokuho). Koshuha seibun no eikyo. Japan: N. p., 1996. Web.
Takahashi, I, Maenaka, H, & Takada, A. Fatigue life estimation of welded joints of an aluminium alloy under superimposed random load waves (follow-up report). Effects of high frequency components; Jujo random kajuka ni okeru aluminium gokin yosetsu tsugite no hiro jumyo suitei (zokuho). Koshuha seibun no eikyo. Japan.
Takahashi, I, Maenaka, H, and Takada, A. 1996. "Fatigue life estimation of welded joints of an aluminium alloy under superimposed random load waves (follow-up report). Effects of high frequency components; Jujo random kajuka ni okeru aluminium gokin yosetsu tsugite no hiro jumyo suitei (zokuho). Koshuha seibun no eikyo." Japan.
@misc{etde_414219,
title = {Fatigue life estimation of welded joints of an aluminium alloy under superimposed random load waves (follow-up report). Effects of high frequency components; Jujo random kajuka ni okeru aluminium gokin yosetsu tsugite no hiro jumyo suitei (zokuho). Koshuha seibun no eikyo}
author = {Takahashi, I, Maenaka, H, and Takada, A}
abstractNote = {In order to examine fatigue behavior of boxing welded joints of anticorrosion aluminum A 5083 P-O alloy, the residual stress measurements, static loading tests, elastic finite element analyses, constant amplitude fatigue tests, and random fatigue tests were conducted. For a load wave in the random loading fatigue tests, a direct current component, a zero-mean narrow band random process, and a high frequency component were combined and superimposed, to examine the effect of the high frequency component and the effect of the stress cycle count method and the mean stress correction on the life estimation. For the fatigue analysis, a reference stress, such as that considering the structural stress concentration, was proved effective in reducing the amount of scattering in the fatigue test results and in improving the life estimation accuracy. Accordingly, for the actual scale measurements, it is insufficient only to measure the stress at points far from the crack initiation place. It is required to analyze the fatigue by measuring the reference stress same as the basic data acquisition tests in the laboratory. 4 refs., 21 figs., 4 tabs.}
place = {Japan}
year = {1996}
month = {Dec}
}