Revisit to the determination of stress-intensity factors and J-integrals using the caustics method

Lee, O. S.; Hong, Seong Kyeong; Kim, Y. S.

doi:10.1007/bf02322489

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Also important is that numerical and analytical solutions of static SIFs of complex domains can be corroborated via strain gage procedures to provide reliability of the results/methods. For example, many researchers have reported on the application of photoelastic methods [Marloff et al 1971;Chan and Chow 1979;Amir et al 1989;Nurse et al 1994] and caustics [Biak et al 1995;Lee and Hong 1993] to the determination of static SIFs or the corroboration of analytical and numerical solutions for important configurations. Such application investigations using existing procedures are useful in establishing the experimental methods and make them into a viable alternative in real design situations of great complexity.…”

Section: Introductionmentioning

confidence: 99%

Determination of mode I stress intensity factors of complex configurations using strain gages

Swamy

Srikanth

Murthy

et al. 2008

JOMMS

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Among techniques for the determination of the mode I stress intensity factors (SIFs), strain gage procedures are the simplest and most straightforward. We report here on an experimental investigation of the determination of opening mode stress intensity factors using the single strain gage method. Our approach overcomes certain drawbacks and greatly widens the applicability of strain gage methods in the determination of static SIFs of complex configurations. The approach was tested through experiments on specimens of finite width and finite height edge-cracked plates (fully finite plates) subjected to tensile stress. We compared the experimentally determined mode I stress intensity factors of fully finite plates with the computed values using finite element analysis, obtaining good agreement between the present approach and computed values.

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Section: Introductionmentioning

confidence: 99%

Determination of mode I stress intensity factors of complex configurations using strain gages

Swamy

Srikanth

Murthy

et al. 2008

JOMMS

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“…For example, application of photoelastic methods is dealt in [Marloff et al 1971;Chan and Chow 1979;Kazemi et al 1989;Nurse et al 1994] and caustics techniques in [Baik et al 1995;Lee and Hong 1993]. Such investigations establish the existing techniques as useful tools in real design situations of great complexity.…”

Section: Introductionmentioning

confidence: 99%

Determination of strain gage locations for the accurate measurement of opening mode stress intensity factors

Kaushik

Murthy

Robi

2008

JOMMS

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The accuracy of measurement of opening mode stress intensity factors using the strain gage techniques largely depends on location of the gages. The radial position of the strain gages is a major issue in measurement of the stress intensity factors. This paper describes an approach to resolve this problem. The present work proposes a method for practically accurate determination of a vital parameter designated as (r max ) which in turn is extremely useful in judging the valid positions of the strain gages. The results of the present investigation clearly show that the proposed method is simple and accurate values of r max can be determined.

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Loading effect on ACPD of a crack in ferromagnetic material

Lee

Saka

Abé

1997

Experimental Mechanics

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ABSTRACT--The loading effect on alternating current potential drop (ACPD) for a ferromagnetic material containing a two-dimensional surface crack was investigated under opening mode loading without shear (mode I). The change in potential drop due to load was obtained with and without a magnetic field around the specimen. To remove the magnetic field from the circumference of the specimen, a new measuring system using the characteristic of coaxial transmission line was made. When the magnetic field does not exist around the specimen, the change in potential drop with load is governed by the change in electromagnetic properties near the crack tip. The results obtained by using the new measuring system are the basis for an application of the ACPD technique to the experimental determination of the stress intensity factor, since they are independent of the arrangement of the measuring probe lines and the current supply lines. The relationship between the change in potential drop and the change in load is linearized by demagnetization. The change in potential drop per unit change in the stress intensity factor is independent of the crack length.

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Revisit to the determination of stress-intensity factors and J-integrals using the caustics method

Cited by 4 publications

References 10 publications

Determination of mode I stress intensity factors of complex configurations using strain gages

Determination of mode I stress intensity factors of complex configurations using strain gages

Determination of strain gage locations for the accurate measurement of opening mode stress intensity factors

Loading effect on ACPD of a crack in ferromagnetic material

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