IFMIF High Flux Test Module—Recent progress in design and manufacturing

Leichtle, D.; Arbeiter, Frederik; Dolensky, B.; Fischer, U.; Gordeev, S.; Heinzel, V.; Ihli, T.; Lang, Karl‐Heinz; Moeslang, A.; Simakov, S.P.; Slobodchuk, Victor Ivanovich; Stratmanns, E.

doi:10.1016/j.fusengdes.2008.05.004

“…Figure 5 shows the relationship between total strain range and fatigue life for the HG-1.25 specimen in this study as well as in previous studies [11][12][13] in comparison with the Manson-Coffin-type regression curve defined by Eq. (2). 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 HG-1.25 specimen relative to those of standard specimens were clearly observed from a level of 10 2 to 10 4 cycles.…”

Section: Resultsmentioning

confidence: 80%

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

Nogami

¹

,

Itoh

²

,

Sakasegawa

³

et al. 2011

Journal of Nuclear Science and Technology

View full text Add to dashboard Cite

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.

show abstract

“…17) Due to the specimen shape and size effect, it is possible that there are some differences in the crack growth behavior between the hourglass-type miniature fatigue specimen and standard specimen, for example, differences in the constants A-H in this work. Therefore, comparison of the crack growth behavior between these specimens and validation of utilizing the miniature specimen should be performed in a future work in order to utilize the fatigue life assessment based on the crack growth behavior in the actual fusion component.…”

Section: Necessity Of the Validation Of Utilizing Miniature Specimensmentioning

confidence: 96%

Fatigue Life Assessment Based on Crack Growth Behavior in Reduced Activation Ferritic/Martensitic Steel

Nogami

¹

,

Sato

²

,

Hasegawa

³

2010

J. Nucl. Sci. Technol.

View full text Add to dashboard Cite

Crack growth behavior under low cycle fatigue in reduced activation ferritic/martensitic steel, F82H IEA-heat (Fe-8Cr-2W-0.2V-0.02Ta), was investigated to improve the fatigue life assessment method of fusion reactor structural material. Low cycle fatigue test was carried out at room temperature in air at a total strain range of 0.4-1.5% using an hourglass-type miniature fatigue specimen. The relationship between the surface crack length and life fraction was described using one equation independent of the total strain range. Therefore, the fatigue life and residual life could be estimated using the surface crack length. Moreover, the microcrack initiation life could be estimated using the total strain range if there was a one-to-one correspondence between the total strain range and number of cycles to failure. The crack growth rate could be estimated using the total strain range and surface crack length by introducing the concept of the normalized crack growth rate.

show abstract

“…In this study, the crack growth behavior was evaluated using the hourglass-type miniature fatigue specimen because the evaluation of irradiation effect would be performed using miniature specimens irradiated in test reactors and the International Fusion Material Irradiation Facility (IFMIF). 17) Due to the specimen shape and size effect, it is possible that there are some differences in the crack growth behavior between the hourglass-type miniature fatigue specimen and standard specimen, for example, differences in the constants A-H in this work. Therefore, comparison of the crack growth behavior between these specimens and validation of utilizing the miniature specimen should be performed in a future work in order to utilize the fatigue life assessment based on the crack growth behavior in the actual fusion component.…”

Section: Necessity Of the Validation Of Utilizing Miniature Specimensmentioning

confidence: 96%

Fatigue Life Assessment Based on Crack Growth Behavior in Reduced Activation Ferritic/Martensitic Steel

Nogami

¹

,

Sato

²

,

Hasegawa

³

2010

Journal of Nuclear Science and Technology

5

0

View full text Add to dashboard Cite

Crack growth behavior under low cycle fatigue in reduced activation ferritic/martensitic steel, F82H IEA-heat (Fe-8Cr-2W-0.2V-0.02Ta), was investigated to improve the fatigue life assessment method of fusion reactor structural material. Low cycle fatigue test was carried out at room temperature in air at a total strain range of 0.4-1.5% using an hourglass-type miniature fatigue specimen. The relationship between the surface crack length and life fraction was described using one equation independent of the total strain range. Therefore, the fatigue life and residual life could be estimated using the surface crack length. Moreover, the microcrack initiation life could be estimated using the total strain range if there was a one-to-one correspondence between the total strain range and number of cycles to failure. The crack growth rate could be estimated using the total strain range and surface crack length by introducing the concept of the normalized crack growth rate.

show abstract

IFMIF High Flux Test Module—Recent progress in design and manufacturing

Cited by 13 publications

References 3 publications

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

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

Fatigue Life Assessment Based on Crack Growth Behavior in Reduced Activation Ferritic/Martensitic Steel

Fatigue Life Assessment Based on Crack Growth Behavior in Reduced Activation Ferritic/Martensitic Steel

Contact Info

Product

Resources

About