Effects of Porosity on the Fatigue Behavior of Aluminum Alloy Weldments PDF Download
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Author: F. V. Lawrence
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Book Description
It appears that the characteristics of the toe of the weld controls the fatigue crack initiation and propagation phenomena in the as welded specimens; and the size, and distribution and possibly location of the largest pore(s) control the fatigue crack initiation and propagation phenomena in weld reinforcement removed specimens.
Author: F. V. Lawrence
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Book Description
It appears that the characteristics of the toe of the weld controls the fatigue crack initiation and propagation phenomena in the as welded specimens; and the size, and distribution and possibly location of the largest pore(s) control the fatigue crack initiation and propagation phenomena in weld reinforcement removed specimens.
Author: F. V. Lawrence
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
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Book Description
The work to be performed is the fatigue testing of aluminum alloy weldments containing various amounts of porosity. Approximately ninety specimens will be tested. The program is divided into three subprograms. Subprogram 1 involves 18 sound specimens to be tested with the reinforcement on. Subprogram II involves 36 specimens containing various levels of porosity to be tested with the reinforcement removed. Subprogram III involves 36 specimens containing various levels of porosity to be tested in the as-welded state. In each subprogram the following tasks will be performed in the following sequence: test specimen preparation (matching), nondestructive evaluation (x-radiography), fatigue testing, post-test examination (porosity level determination, fractography).
Author: F. V Lawrence (Jr)
Publisher:
ISBN: 9781581452051
Category : Aluminum alloys
Languages : en
Pages : 23
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Book Description
The results of the investigation indicate that 5083-5183 welds subjected to fatigue are little affected by porosity if the weld reinforcement is left in place. The weld reinforcement itself is the critical and fatigue limiting notch. Most welds tested with their reinforcement removed gave longer fatigue lives than as-welded tests regardless of porosity level. Porosity most influenced the fatigue lives of the reinforcement removed tests at the lowest stress levels. The radiographic standards currently in use by the U.S. Navy were found to be effective in insuring superior results with reinforcement removed welds. Conversely, few reinforcement removed welds which failed these standards gave shorter fatigue lives than porosity-free, as-welded welds.
Author: Wallace Wolfred Sanders
Publisher:
ISBN:
Category : Aluminum
Languages : en
Pages : 21
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Book Description
Author: D. W. Hoeppner
Publisher: ASTM International
ISBN: 9780803103481
Category : Technology & Engineering
Languages : en
Pages : 304
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Book Description
Author: David W. Hoeppner
Publisher: ASTM International
ISBN:
Category : Soudures
Languages : en
Pages : 301
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Book Description
Author: J. D. Burk
Publisher:
ISBN: 9781581452334
Category : Aluminum alloys
Languages : en
Pages : 14
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Book Description
Author: Wallace Wolfred Sanders
Publisher:
ISBN:
Category : Aluminum
Languages : en
Pages : 30
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Book Description
Author: FV. Lawrence
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 13
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Book Description
During the last eight years, a number of research studies have been conducted on the fatigue behavior of aluminum alloy weldments under the guidance of the Aluminum Alloys Committee of the Welding Research Council. The initial study was a comprehensive review of the current (1970) state of knowledge and the development of research needs. The additional studies have included investigations into the effect of weld orientation (longitudinal versus transverse), thickened plates, and weld defects on fatigue behavior. This paper provides a summary of these five studies.
Author: John G. Macco
Publisher:
ISBN:
Category :
Languages : en
Pages : 31
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Book Description
Low-cycle flexural fatigue tests were conducted on 1-inch-thick 5086-H116 and 5456-H117 aluminum alloy plates to provide engineering data for use in the hull design of high performance surface ships. The results indicate that fatigue life is similar for both alloys despite strength differences, slightly reduced by the presence of sea water; appreciably reduced due to welding; significantly improved by grinding, but only if the ground surfaces are free of porosity; and unaffected by either mechanical peening or a postweld remelt treatment. (Modified author abstract).
