Validation of the acceptability of 10*20 mm specimens for fracture toughness determination of high-strength steels

C L Walters, L O Voormeeren, M Janssen, Kim Wallin

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

3 Citations (Scopus)

Abstract

Standards have traditionally required that fracture toughness specimens be the full thickness of the base material. However, this requirement may be unnecessary, especially if minimum specimen size dimensions based on plastic zone are met and the subsized specimens are statistically adjusted for the size effect. The current paper presents the results for full-thickness proportional Single Edge Notched Bending (SENB) specimens according to BS7448-1 that are 25 mm by 50 mm in cross-section and then compares these results to specimens of the same material that are 10 mm by 20 mm in cross section. The result is that for a temperature near the lower portion of the transition curve (-60°C to -70°C), the subsize specimens are in very good agreement. These results hold for two different loading rates. After correction for statistical size effect, the fracture toughnesses of the subsize specimens are within 10% of the full-size specimens. This is conservative. The difference is attributed to the statistical nature of fracture in the transition region
Original languageEnglish
Title of host publicationASME 32nd International Conference on Ocean, Offshore and Arctic Engineering
Subtitle of host publicationMaterials Technology; Ocean Space Utilization
PublisherAmerican Society of Mechanical Engineers ASME
Number of pages9
Volume3
ISBN (Print)978-0-7918-5535-5
DOIs
Publication statusPublished - 2013
MoE publication typeNot Eligible
EventASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2013 - Nantes, France
Duration: 9 Jun 201314 Jun 2013
Conference number: 32

Conference

ConferenceASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2013
Abbreviated titleOMAE 2013
CountryFrance
CityNantes
Period9/06/1314/06/13

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High strength steel
Fracture toughness
Plastics
Temperature

Cite this

Walters, C. L., Voormeeren, L. O., Janssen, M., & Wallin, K. (2013). Validation of the acceptability of 10*20 mm specimens for fracture toughness determination of high-strength steels. In ASME 32nd International Conference on Ocean, Offshore and Arctic Engineering: Materials Technology; Ocean Space Utilization (Vol. 3). [V003T03A013] American Society of Mechanical Engineers ASME. https://doi.org/10.1115/OMAE2013-10373
Walters, C L ; Voormeeren, L O ; Janssen, M ; Wallin, Kim. / Validation of the acceptability of 10*20 mm specimens for fracture toughness determination of high-strength steels. ASME 32nd International Conference on Ocean, Offshore and Arctic Engineering: Materials Technology; Ocean Space Utilization. Vol. 3 American Society of Mechanical Engineers ASME, 2013.
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abstract = "Standards have traditionally required that fracture toughness specimens be the full thickness of the base material. However, this requirement may be unnecessary, especially if minimum specimen size dimensions based on plastic zone are met and the subsized specimens are statistically adjusted for the size effect. The current paper presents the results for full-thickness proportional Single Edge Notched Bending (SENB) specimens according to BS7448-1 that are 25 mm by 50 mm in cross-section and then compares these results to specimens of the same material that are 10 mm by 20 mm in cross section. The result is that for a temperature near the lower portion of the transition curve (-60°C to -70°C), the subsize specimens are in very good agreement. These results hold for two different loading rates. After correction for statistical size effect, the fracture toughnesses of the subsize specimens are within 10{\%} of the full-size specimens. This is conservative. The difference is attributed to the statistical nature of fracture in the transition region",
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Walters, CL, Voormeeren, LO, Janssen, M & Wallin, K 2013, Validation of the acceptability of 10*20 mm specimens for fracture toughness determination of high-strength steels. in ASME 32nd International Conference on Ocean, Offshore and Arctic Engineering: Materials Technology; Ocean Space Utilization. vol. 3, V003T03A013, American Society of Mechanical Engineers ASME, ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2013, Nantes, France, 9/06/13. https://doi.org/10.1115/OMAE2013-10373

Validation of the acceptability of 10*20 mm specimens for fracture toughness determination of high-strength steels. / Walters, C L; Voormeeren, L O; Janssen, M; Wallin, Kim.

ASME 32nd International Conference on Ocean, Offshore and Arctic Engineering: Materials Technology; Ocean Space Utilization. Vol. 3 American Society of Mechanical Engineers ASME, 2013. V003T03A013.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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N2 - Standards have traditionally required that fracture toughness specimens be the full thickness of the base material. However, this requirement may be unnecessary, especially if minimum specimen size dimensions based on plastic zone are met and the subsized specimens are statistically adjusted for the size effect. The current paper presents the results for full-thickness proportional Single Edge Notched Bending (SENB) specimens according to BS7448-1 that are 25 mm by 50 mm in cross-section and then compares these results to specimens of the same material that are 10 mm by 20 mm in cross section. The result is that for a temperature near the lower portion of the transition curve (-60°C to -70°C), the subsize specimens are in very good agreement. These results hold for two different loading rates. After correction for statistical size effect, the fracture toughnesses of the subsize specimens are within 10% of the full-size specimens. This is conservative. The difference is attributed to the statistical nature of fracture in the transition region

AB - Standards have traditionally required that fracture toughness specimens be the full thickness of the base material. However, this requirement may be unnecessary, especially if minimum specimen size dimensions based on plastic zone are met and the subsized specimens are statistically adjusted for the size effect. The current paper presents the results for full-thickness proportional Single Edge Notched Bending (SENB) specimens according to BS7448-1 that are 25 mm by 50 mm in cross-section and then compares these results to specimens of the same material that are 10 mm by 20 mm in cross section. The result is that for a temperature near the lower portion of the transition curve (-60°C to -70°C), the subsize specimens are in very good agreement. These results hold for two different loading rates. After correction for statistical size effect, the fracture toughnesses of the subsize specimens are within 10% of the full-size specimens. This is conservative. The difference is attributed to the statistical nature of fracture in the transition region

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Walters CL, Voormeeren LO, Janssen M, Wallin K. Validation of the acceptability of 10*20 mm specimens for fracture toughness determination of high-strength steels. In ASME 32nd International Conference on Ocean, Offshore and Arctic Engineering: Materials Technology; Ocean Space Utilization. Vol. 3. American Society of Mechanical Engineers ASME. 2013. V003T03A013 https://doi.org/10.1115/OMAE2013-10373