Strain evaluation using a non-contact deformation measurement system in tensile tests of irradiated F82H and 9cr ODS steels

Hideo Sakasegawa; Xiang Chen; Taichiro Kato; Hiroyasu Tanigawa; Masami Ando; Josina W. Geringer; Shigeharu Ukai; Satoshi Ohtsuka

doi:10.1016/j.nme.2018.06.005

Strain evaluation using a non-contact deformation measurement system in tensile tests of irradiated F82H and 9cr ODS steels

Hideo Sakasegawa, Xiang Chen, Taichiro Kato, Hiroyasu Tanigawa, Masami Ando, Josina W. Geringer, Shigeharu Ukai, Satoshi Ohtsuka

Advanced Nuclear Materials

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We developed a non-contact deformation measurement system to accurately evaluate strain for post irradiation tensile testing, since conventional strain gages cannot be used for small size specimens. The strain calculated from cross-head displacement generally includes deformation from specimen shoulders, fixtures, and the test frame in addition to the deformation from the specimen gauge section. In our system, the distance between painted marks within the specimen gauge section was measured using a high resolution video camera to evaluate the specimen deformation during room temperature tensile testing. The test materials were F82H and 9Cr ODS steels irradiated up to ≈71 displacements per atom (dpa) at about 573 K in High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL). Our system yielded accurate stress strain curves without deformations other than the specimen gage section, and the elongation was less than that calculated from cross-head displacement. This system can contribute to expanding the technically reliable database for the design activity of fusion reactor blanket, including the effects of irradiation on tensile properties.

Original language	English
Pages (from-to)	108-113
Number of pages	6
Journal	Nuclear Materials and Energy
Volume	16
DOIs	https://doi.org/10.1016/j.nme.2018.06.005
State	Published - Aug 2018

Funding

This work is part of the U.S. DOE – QST collaboration on Fusion Materials, sponsored by the U.S. Department of Energy , Office of Fusion Energy Sciences , and National Institutes for Quantum and Radiological Science and Technology under contracts DE-AC05-00OR22725 and NFE-19-02779 , respectively, with UT-Battelle, LLC. A portion of this research used resources at the High Flux Isotope Reactor, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.

Funders	Funder number
National Institutes for Quantum
Radiological Science and Technology	NFE-19-02779
U.S. Department of Energy	DE-AC05-00OR22725
Fusion Energy Sciences

Keywords

Oxide dispersion strengthened steel
Post irradiation experiment
Reduced activation ferritic/martensitic steel
Small specimen technology
Strain
Tensile test

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.nme.2018.06.005

Cite this

@article{50c1e031e95c4a55b1e9068c9393ccf2,

title = "Strain evaluation using a non-contact deformation measurement system in tensile tests of irradiated F82H and 9cr ODS steels",

abstract = "We developed a non-contact deformation measurement system to accurately evaluate strain for post irradiation tensile testing, since conventional strain gages cannot be used for small size specimens. The strain calculated from cross-head displacement generally includes deformation from specimen shoulders, fixtures, and the test frame in addition to the deformation from the specimen gauge section. In our system, the distance between painted marks within the specimen gauge section was measured using a high resolution video camera to evaluate the specimen deformation during room temperature tensile testing. The test materials were F82H and 9Cr ODS steels irradiated up to ≈71 displacements per atom (dpa) at about 573 K in High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL). Our system yielded accurate stress strain curves without deformations other than the specimen gage section, and the elongation was less than that calculated from cross-head displacement. This system can contribute to expanding the technically reliable database for the design activity of fusion reactor blanket, including the effects of irradiation on tensile properties.",

keywords = "Oxide dispersion strengthened steel, Post irradiation experiment, Reduced activation ferritic/martensitic steel, Small specimen technology, Strain, Tensile test",

author = "Hideo Sakasegawa and Xiang Chen and Taichiro Kato and Hiroyasu Tanigawa and Masami Ando and Geringer, {Josina W.} and Shigeharu Ukai and Satoshi Ohtsuka",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = aug,

doi = "10.1016/j.nme.2018.06.005",

language = "English",

volume = "16",

pages = "108--113",

journal = "Nuclear Materials and Energy",

issn = "2352-1791",

publisher = "Elsevier",

}

TY - JOUR

T1 - Strain evaluation using a non-contact deformation measurement system in tensile tests of irradiated F82H and 9cr ODS steels

AU - Sakasegawa, Hideo

AU - Chen, Xiang

AU - Kato, Taichiro

AU - Tanigawa, Hiroyasu

AU - Ando, Masami

AU - Geringer, Josina W.

AU - Ukai, Shigeharu

AU - Ohtsuka, Satoshi

PY - 2018/8

Y1 - 2018/8

N2 - We developed a non-contact deformation measurement system to accurately evaluate strain for post irradiation tensile testing, since conventional strain gages cannot be used for small size specimens. The strain calculated from cross-head displacement generally includes deformation from specimen shoulders, fixtures, and the test frame in addition to the deformation from the specimen gauge section. In our system, the distance between painted marks within the specimen gauge section was measured using a high resolution video camera to evaluate the specimen deformation during room temperature tensile testing. The test materials were F82H and 9Cr ODS steels irradiated up to ≈71 displacements per atom (dpa) at about 573 K in High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL). Our system yielded accurate stress strain curves without deformations other than the specimen gage section, and the elongation was less than that calculated from cross-head displacement. This system can contribute to expanding the technically reliable database for the design activity of fusion reactor blanket, including the effects of irradiation on tensile properties.

AB - We developed a non-contact deformation measurement system to accurately evaluate strain for post irradiation tensile testing, since conventional strain gages cannot be used for small size specimens. The strain calculated from cross-head displacement generally includes deformation from specimen shoulders, fixtures, and the test frame in addition to the deformation from the specimen gauge section. In our system, the distance between painted marks within the specimen gauge section was measured using a high resolution video camera to evaluate the specimen deformation during room temperature tensile testing. The test materials were F82H and 9Cr ODS steels irradiated up to ≈71 displacements per atom (dpa) at about 573 K in High Flux Isotope Reactor (HFIR) at Oak Ridge National Laboratory (ORNL). Our system yielded accurate stress strain curves without deformations other than the specimen gage section, and the elongation was less than that calculated from cross-head displacement. This system can contribute to expanding the technically reliable database for the design activity of fusion reactor blanket, including the effects of irradiation on tensile properties.

KW - Oxide dispersion strengthened steel

KW - Post irradiation experiment

KW - Reduced activation ferritic/martensitic steel

KW - Small specimen technology

KW - Strain

KW - Tensile test

UR - http://www.scopus.com/inward/record.url?scp=85049115887&partnerID=8YFLogxK

U2 - 10.1016/j.nme.2018.06.005

DO - 10.1016/j.nme.2018.06.005

M3 - Article

AN - SCOPUS:85049115887

SN - 2352-1791

VL - 16

SP - 108

EP - 113

JO - Nuclear Materials and Energy

JF - Nuclear Materials and Energy

ER -

Strain evaluation using a non-contact deformation measurement system in tensile tests of irradiated F82H and 9cr ODS steels

Abstract

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this