Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy

K. I. Johnson; M. A. Khaleel; C. A. Lavender; S. G. Pitman; J. T. Smith; M. T. Smith; C. H. Hamilton

doi:10.4028/www.scientific.net/msf.170-172.627

Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy

K. I. Johnson
, M. A. Khaleel
, C. A. Lavender
, S. G. Pitman
, J. T. Smith
, M. T. Smith
, C. H. Hamilton

Research output: Contribution to journal › Conference article › peer-review

9 Scopus citations

Abstract

The relationship of force versus cross-head travel for a carefully defined displacement history is commonly used in uniaxial tension tests to evaluate rate sensitive properties of superplastic alloys. The underlying objective is to maintain the strain-rate constant throughout the gauge section of the test specimen. However, finite element simulations of common superplastic tensile specimens predict that actual strain-rates may vary as much as 40% from the uniform value. This trend was experimentally confirmed for a 5083 aluminum alloy by performing a series of interrupted tensile tests. A correlation between experimental and finite element results was made and an improved specimen geometry is presented for uniaxial tests.

Original language	English
Pages (from-to)	627-632
Number of pages	6
Journal	Materials Science Forum
Volume	170-172
DOIs	https://doi.org/10.4028/www.scientific.net/msf.170-172.627
State	Published - 1994
Externally published	Yes
Event	Proceedings of the 1994 International Conference on Superplasticity in Advanced Materials (ICSAM-94) - Moscow, Russia Duration: May 24 1994 → May 26 1994

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title = "Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy",

abstract = "The relationship of force versus cross-head travel for a carefully defined displacement history is commonly used in uniaxial tension tests to evaluate rate sensitive properties of superplastic alloys. The underlying objective is to maintain the strain-rate constant throughout the gauge section of the test specimen. However, finite element simulations of common superplastic tensile specimens predict that actual strain-rates may vary as much as 40\% from the uniform value. This trend was experimentally confirmed for a 5083 aluminum alloy by performing a series of interrupted tensile tests. A correlation between experimental and finite element results was made and an improved specimen geometry is presented for uniaxial tests.",

author = "Johnson, \{K. I.\} and Khaleel, \{M. A.\} and Lavender, \{C. A.\} and Pitman, \{S. G.\} and Smith, \{J. T.\} and Smith, \{M. T.\} and Hamilton, \{C. H.\}",

year = "1994",

doi = "10.4028/www.scientific.net/msf.170-172.627",

language = "English",

volume = "170-172",

pages = "627--632",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications",

note = "Proceedings of the 1994 International Conference on Superplasticity in Advanced Materials (ICSAM-94) ; Conference date: 24-05-1994 Through 26-05-1994",

}

TY - JOUR

T1 - Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy

AU - Johnson, K. I.

AU - Khaleel, M. A.

AU - Lavender, C. A.

AU - Pitman, S. G.

AU - Smith, J. T.

AU - Smith, M. T.

AU - Hamilton, C. H.

PY - 1994

Y1 - 1994

N2 - The relationship of force versus cross-head travel for a carefully defined displacement history is commonly used in uniaxial tension tests to evaluate rate sensitive properties of superplastic alloys. The underlying objective is to maintain the strain-rate constant throughout the gauge section of the test specimen. However, finite element simulations of common superplastic tensile specimens predict that actual strain-rates may vary as much as 40% from the uniform value. This trend was experimentally confirmed for a 5083 aluminum alloy by performing a series of interrupted tensile tests. A correlation between experimental and finite element results was made and an improved specimen geometry is presented for uniaxial tests.

AB - The relationship of force versus cross-head travel for a carefully defined displacement history is commonly used in uniaxial tension tests to evaluate rate sensitive properties of superplastic alloys. The underlying objective is to maintain the strain-rate constant throughout the gauge section of the test specimen. However, finite element simulations of common superplastic tensile specimens predict that actual strain-rates may vary as much as 40% from the uniform value. This trend was experimentally confirmed for a 5083 aluminum alloy by performing a series of interrupted tensile tests. A correlation between experimental and finite element results was made and an improved specimen geometry is presented for uniaxial tests.

UR - https://www.scopus.com/pages/publications/0028726821

U2 - 10.4028/www.scientific.net/msf.170-172.627

DO - 10.4028/www.scientific.net/msf.170-172.627

M3 - Conference article

AN - SCOPUS:0028726821

SN - 0255-5476

VL - 170-172

SP - 627

EP - 632

JO - Materials Science Forum

JF - Materials Science Forum

T2 - Proceedings of the 1994 International Conference on Superplasticity in Advanced Materials (ICSAM-94)

Y2 - 24 May 1994 through 26 May 1994

ER -

Effect of specimen geometry on the accuracy of constitutive relations in a superplastic 5083 aluminum alloy

Abstract

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