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Beneficial Tensile Mean Strain Effects on the Fatigue Behavior of Superelastic NiTi.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Beneficial Tensile Mean Strain Effects on the Fatigue Behavior of Superelastic NiTi./
作者:	Rutherford, Benjamin Andrew.
面頁冊數:	1 online resource (89 pages)
附註:	Source: Masters Abstracts International, Volume: 56-04.
Contained By:	Masters Abstracts International56-04(E).
標題:	Mechanical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781369706055

Beneficial Tensile Mean Strain Effects on the Fatigue Behavior of Superelastic NiTi.
Rutherford, Benjamin Andrew.

Beneficial Tensile Mean Strain Effects on the Fatigue Behavior of Superelastic NiTi. - 1 online resource (89 pages)

Source: Masters Abstracts International, Volume: 56-04.

Thesis (M.S.)

Includes bibliographical references

In this work, beneficial effects of tensile mean strain on fatigue behavior and microstructure of superelastic NiTi (i.e. Nitinol) are studied. Most applications, such as endovascular stents made with NiTi, are subjected to a combination of constant and cyclic loading; thus, understanding the fatigue behavior of NiTi undergoing mean strain loading is necessary. Cyclic strain-controlled fatigue tests are designed to investigate the effects of tensile mean strain on fatigue of superelastic NiTi. Experimental observations show that combinations of large tensile mean strains and small strain amplitudes improve the fatigue life of superelastic NiTi. This behavior arises from reversible, stress-induced phase transformations. The phase transformations cause "stress plateaus" or strain ranges with no change in stress value. Scanning electron microscopy (SEM) of the fracture surfaces of specimens revealed generally short crack growth. Electron backscatter diffraction (EBSD) found the amount of residual martensite to be about ~8%, regardless of loading conditions.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369706055Subjects--Topical Terms:

557493
Mechanical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Beneficial Tensile Mean Strain Effects on the Fatigue Behavior of Superelastic NiTi.
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245 1 0 $a Beneficial Tensile Mean Strain Effects on the Fatigue Behavior of Superelastic NiTi.
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500 $a Source: Masters Abstracts International, Volume: 56-04.
500 $a Adviser: Tonya W. Stone.
502 $a Thesis (M.S.) $c Mississippi State University $d 2017.
504 $a Includes bibliographical references
520 $a In this work, beneficial effects of tensile mean strain on fatigue behavior and microstructure of superelastic NiTi (i.e. Nitinol) are studied. Most applications, such as endovascular stents made with NiTi, are subjected to a combination of constant and cyclic loading; thus, understanding the fatigue behavior of NiTi undergoing mean strain loading is necessary. Cyclic strain-controlled fatigue tests are designed to investigate the effects of tensile mean strain on fatigue of superelastic NiTi. Experimental observations show that combinations of large tensile mean strains and small strain amplitudes improve the fatigue life of superelastic NiTi. This behavior arises from reversible, stress-induced phase transformations. The phase transformations cause "stress plateaus" or strain ranges with no change in stress value. Scanning electron microscopy (SEM) of the fracture surfaces of specimens revealed generally short crack growth. Electron backscatter diffraction (EBSD) found the amount of residual martensite to be about ~8%, regardless of loading conditions.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Mechanical engineering. $3 557493
650 4 $a Materials science. $3 557839
655 7 $a Electronic books. $2 local $3 554714
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710 2 $a Mississippi State University. $b Mechanical Engineering. $3 845713
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