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The variable threshold rod experiment: a comparison of measured and computed deformations

Article Abstract:

The inhomogeneous deformations in materials are studied by means of the variable threshold rod experiment. Machined tapered plate specimens are instrumented at three locations and subsequently stretched in an electro-mechanical load frame. The mechanical threshold at each location is obtained by measuring the structures' yield stresses under normal room temperature. A mathematical model is then employed to verify the measured data. A good agreement is observed between the experimental and numerical results.

Author: Follansbee, P.S., Dawson, P.R.
Publisher: American Society of Mechanical Engineers
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1993
Methods, Deformations (Mechanics), Deformation, Structural analysis (Engineering)

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Variation of yield stress with strain rate for three carbon steels

Article Abstract:

The effects of temperature and strin rate on the yield stress behavior of three low carbon steels are investigated through experimental procedures. Tests are carried out in a servo-hydraulic testing machine wherein carbon steels specimen having different chemical compositions are subjected to tensile loads at varying temperature levels. Results show that the specimens' yield stress exhibit high sensitivity at low temperature and high strain rate levels.

Author: Liu Yongning, Zhu Jinhua, Zhou Huijiu, Follansbee, P.S.
Publisher: American Society of Mechanical Engineers
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1992
Temperature

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On the analysis of distortion and residual stress in carburized steels

Article Abstract:

The distortion and residual stress behavior of carburized and quenched gear steels are studied to develop an accurate model of the various phase transformations inherent in material systems. Data commonly used in the finite element analysis of residual stress are compared with those obtained through experimental procedures. Results indicate that existing data cannot be relied upon in the accurate prediction of strains and stresses.

Author: Henriksen, M., Larson, D.B., Van Tyne, C.J.
Publisher: American Society of Mechanical Engineers
Publication Name: Journal of Engineering Materials and Technology
Subject: Science and technology
ISSN: 0094-4289
Year: 1992
Stress analysis (Engineering)

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Subjects list: Research, Analysis, Strains and stresses, Stresses (Materials), Carbon steel
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