In-beam fatigue behavior of F82H steel at 500 °C

Murase, Yoshiharu; Nagakawa, Yuichi; Chuto, K; Yamamoto, Norikazu

doi:10.1016/j.jnucmat.2004.04.021

Cited by 7 publications

(10 citation statements)

References 8 publications

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“…The number of cycles to crack initiation was defined either as a number of cycles when a crack or a slip greater than the grain size was observed using a microscope after an interrupted test and polishing the surface 177 or by combining initiation and growth up to 100 microns due to SEM resolution, then subtracting the number of visible striations in the specimen from the number of cycles to failure. 128…”

Section: Crack Growthmentioning

confidence: 99%

“…133 Irradiation was discovered to retard crack propagation similarly to how it retarded crack initiation. 128 Kovarik developed a method for measuring the crack propagation rate using mini cantilever specimens and a resonance fatigue test method with micrometric resolution, measuring the crack propagation using a compliance technique. 141 Crack growth rates comparable to rates in standard tests can be achieved.…”

Section: Crack Growthmentioning

confidence: 99%

See 1 more Smart Citation

Small specimen techniques for estimation of tensile, fatigue, fracture and crack propagation material model parameters

Kazakeviciute

Rouse

Focatiis

et al. 2021

The Journal of Strain Analysis for Engineering Design

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Small specimen mechanical testing is an exciting and rapidly developing field in which fundamental deformation behaviours can be observed from experiments performed on comparatively small amounts of material. These methods are particularly useful when there is limited source material to facilitate a sufficient number of standard specimen tests, if any at all. Such situations include the development of new materials or when performing routine maintenance/inspection studies of in-service components, requiring that material conditions are updated with service exposure. The potentially more challenging loading conditions and complex stress states experienced by small specimens, in comparison with standard specimen geometries, has led to a tendency for these methods to be used in ranking studies rather than for fundamental material parameter determination. Classifying a specimen as ‘small’ can be subjective, and in the present work the focus is to review testing methods that utilise specimens with characteristic dimensions of less than 50 mm. By doing this, observations made here will be relevant to industrial service monitoring problems, wherein small samples of material are extracted and tested from operational components in such a way that structural integrity is not compromised. Whilst recently the majority of small specimen test techniques development have focused on the determination of creep behaviour/properties as well as sub-size tensile testing, attention is given here to small specimen testing methods for determining specific tensile, fatigue, fracture and crack growth properties. These areas are currently underrepresented in published reviews. The suitability of specimens and methods is discussed here, along with associated advantages and disadvantages.

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Section: Crack Growthmentioning

confidence: 99%

Section: Crack Growthmentioning

confidence: 99%

Small specimen techniques for estimation of tensile, fatigue, fracture and crack propagation material model parameters

Kazakeviciute

Rouse

Focatiis

et al. 2021

The Journal of Strain Analysis for Engineering Design

View full text Add to dashboard Cite

show abstract

“…Several types of small fatigue specimens such as a round-bar, hourglass, and flat-plate were used in previous studies [3][4][5][6][7] to evaluate the fatigue life. However, these specimens did not always show the same fatigue life as the recommended standard specimen.…”

Section: Introductionmentioning

confidence: 99%

Development of fatigue life evaluation method using small specimen

Nogami

Nishimura

Wakai

et al. 2013

Journal of Nuclear Materials

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“…Though small fatigue specimens with several shapes such as round bar, hourglass, and flat plate were used in previous studies, [3][4][5][6][7][8] verification was insufficient to determine whether these small specimens showed the same fatigue life as the standard specimen, which was the round-bar specimen with a minimum diameter of a few millimeters.…”

Section: Introductionmentioning

confidence: 99%

Study on Fatigue Life Evaluation Using Small Specimens for Testing Neutron-Irradiated Materials

Nogami

Itoh

Sakasegawa

et al. 2011

Journal of Nuclear Science and Technology

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The effect of specimen size and shape on the fatigue life of reduced activation ferritic/martensitic steel ''F82H IEA-heat'' was investigated to develop a fatigue life evaluation method using a small specimen for testing neutron-irradiated materials. The fatigue test was carried out at room temperature in air using three kinds of round-bar specimen (minimum diameter cross sections of 1, 4, and 7 mm) and one hourglass specimen (minimum diameter cross section of 1.25 mm). The effect of specimen size on fatigue life from a level of 10 3 to 10 4 cycles was almost negligible for the round-bar specimens. The shorter fatigue life at the total strain range below 0.6% and the slightly longer fatigue life at the total strain range above 0.8% of the hourglass specimen relative to that of the standard specimen were observed from a level of 10 2 to 10 4 cycles.

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In-beam fatigue behavior of F82H steel at 500 °C

Cited by 7 publications

References 8 publications

Small specimen techniques for estimation of tensile, fatigue, fracture and crack propagation material model parameters

Small specimen techniques for estimation of tensile, fatigue, fracture and crack propagation material model parameters

Development of fatigue life evaluation method using small specimen

Study on Fatigue Life Evaluation Using Small Specimens for Testing Neutron-Irradiated Materials

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