# Advancements in fracture toughness testing of ultra-high-strength steel sheets: Unraveling the crack-closure effect and unanticipated thickness independence

https://mdr.nims.go.jp/datasets/a1bdeb38-d5d3-4c26-a64c-8df2ea7f7b1d

## File

- [Revised Manuscript_Tanaka et al_MDR.pdf](https://mdr.nims.go.jp/filesets/233bdd64-e37b-49c8-beb2-952306673af7/download) ([Detail](https://mdr.nims.go.jp/filesets/233bdd64-e37b-49c8-beb2-952306673af7.md))

## Id

a1bdeb38-d5d3-4c26-a64c-8df2ea7f7b1d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-01T02:48:37.604554Z

## Updated at

2024-11-01T04:08:08.304071Z

## Published at

2026-07-16T23:34:15.239746Z

## Doi

https://doi.org/10.48505/nims.4914

## First published url

https://doi.org/10.1016/j.engfracmech.2024.110322

## Date published

2024-07-17

## Recorded date published

2024-8

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Advancements in fracture toughness testing of ultra-high-strength steel
    sheets: Unraveling the crack-closure effect and unanticipated thickness independence'
  title_type: original
  lang: en

## Description

- description: A novel testing method was developed to evaluate the fracture toughness
    of ultra-high-strength (UHS) steel sheets. The study also examined the influence
    of specimen thickness, utilizing specimens of varying thicknesses (1.6 ~ 10 mm).
    While the toughness of all specimens was determined by the threshold for planar
    crack propagation originating from the fatigue pre-crack-front near the mid-thickness
    zone, the apparent fracture toughness was dependent on specimen thickness. This
    phenomenon was attributed to the crack-closure effects experienced during the
    pre-cracking process. In-depth analyses revealed that, in the absence of crack-closure
    effects, the intrinsic toughness remained unaffected by changes in specimen thickness.
  description_type: abstract
  lang: und

## Creator

- name: Yuya Tanaka
  role: author
- name: Naoki Hirakawa
  role: author
- name: Kaneaki Tsuzaki
  role: author
  orcid: https://orcid.org/0000-0003-2400-7605
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Hisao Matsunaga
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Ultra-high-strength steel
  schema: not_defined
- subject: Fracture toughness
  schema: not_defined
- subject: Thickness effect
  schema: not_defined
- subject: Crack-closure
  schema: not_defined
- subject: MT specimen
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-07-17
end_date: 2026-07-17

## Journal

- title: Engineering Fracture Mechanics
  issn: '00137944'
  article_number: '110322'

## Conference



## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 233bdd64-e37b-49c8-beb2-952306673af7
  filename: Revised Manuscript_Tanaka et al_MDR.pdf
  content_type: application/pdf
  size: 5300688
  md5: d0c63c532a541148521772cb7f1bdef2

## Thumbnail

fileset_id: 233bdd64-e37b-49c8-beb2-952306673af7
filename: Revised Manuscript_Tanaka et al_MDR.pdf