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Investigation of fatigue-crack growth under simple variable-amplitude loading

01 Mar 1970-
About: The article was published on 1970-03-01 and is currently open access. It has received 19 citations till now. The article focuses on the topics: Crack closure & Paris' law.

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Citations
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Book ChapterDOI
01 Jan 1974

124 citations

01 Jun 1976
TL;DR: In this paper, the authors present a bibliography consisting of approximately 1,600 reference citations related to four problem areas in the mechanics of failure in aerospace structures: hydrogen embrittlement, protective coatings, composite materials, and non-destructive evaluation.
Abstract: This bibliography is comprised of approximately 1,600 reference citations related to four problem areas in the mechanics of failure in aerospace structures. The bibliography represents a search of the literature published in the period 1962-1976, the effort being largely limited to documents published in the United States. Listings are subdivided into the four problem areas: Hydrogen Embrittlement; Protective Coatings; Composite Materials; and Nondestructive Evaluation. An author index is included.

112 citations

Journal ArticleDOI
TL;DR: In this article, the authors predict the delay in fatigue crack growth and structural life prediction based on compression, creep, stress relaxation, and overloading effects on overloading and stress relaxation.
Abstract: Compression, creep, stress relaxation and overloading effects on delay in fatigue crack growth and structural life predictions

55 citations

Journal ArticleDOI
TL;DR: In this paper, the delay period and corresponding crack growth rate transients following overload and overload/underload cycles were systematically measured as a function of load ratio and overload magnitude, and improvements in the model were suggested.

26 citations

Journal ArticleDOI
TL;DR: Complex airframe design for economic and safe operation and long life using fatigue and fracture mechanics using fatigue-and fracture-fracture mechanics is discussed in detail in this article.
Abstract: Complex airframe design for economic and safe operation and long life using fatigue and fracture mechanics

23 citations

References
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Book ChapterDOI
01 Jan 1962
TL;DR: Several test series on crack propagation in light alloy specimens were performed at a positive mean stress and axial loading as mentioned in this paper, and results were presented on the following aspects: (1) the frequency effect was studied by comparing the crack rate at a low and a high frequency, viz. about 20 and 2000 c/min respectively.
Abstract: Several test series on crack propagation in light alloy specimens were performed at a positive mean stress and axial loading. Results are presented on the following aspects: (1) The frequency effect was studied by comparing the crack rate at a low and a high frequency, viz. about 20 and 2000 c/min respectively. Some fractographical observations were made. (2) The effect of varying the stress amplitude and applying high peak loads on the crack propagation was studied in comparison with constant-amplitude data. (3) The results of stiffened panels were compared with the results of a complete structure and the results of small sheet specimens. At the end of the paper the conclusions are summarized.

95 citations

01 Jan 1954
TL;DR: In the initial phase of a NACA program on fatigue research, axial load tests on 24S-T3 and 75 S-T6 aluminum-alloy sheet have been made at the Battelle Memorial Institute and at the Langley Aeronautical Laboratory of the National Advisory Committee for Aeronautics.
Abstract: In the initial phase of a NACA program on fatigue research, axial-load tests on 24S-T3 and 75S-T6 aluminum-alloy sheet have been made at the Battelle Memorial Institute and at the Langley Aeronautical Laboratory of the National Advisory Committee for Aeronautics. The test specimens were polished and unnotched. The manufacturer of the material, the Aluminum Company of America, has made axial-load tests on 24S-T4 and 75S-T6 rod material. The test techniques used at the three laboratories are described in detail; the test results are presented and are compared with each other and with results obtained on unpolished sheet by the National Bureau of Standards. (author)

40 citations