Wedge-Splitting Test on Carbon-Containing Refractories at High Temperatures
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in: Applied Sciences : open access journal, Jahrgang 9.2019, Nr. 16, 3249, 08.08.2019.
Publikationen: Beitrag in Fachzeitschrift › Artikel › Forschung › (peer-reviewed)
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TY - JOUR
T1 - Wedge-Splitting Test on Carbon-Containing Refractories at High Temperatures
AU - Stückelschweiger, Martin
AU - Gruber, Dietmar
AU - Jin, Shengli
AU - Harmuth, Harald
PY - 2019/8/8
Y1 - 2019/8/8
N2 - The mode I fracture behavior of ordinary refractory materials is usually tested with the wedge-splitting test. At elevated temperatures, the optical displacement measurement is difficult because of the convection in the furnace and possible reactions of refractory components with the ambient atmosphere. The present paper introduces a newly developed testing device, which is able to perform such experiments up to 1500 °C. For the testing of carbon-containing refractories a gas purging, for example, with argon, is possible. Laser speckle extensometers are applied for the displacement measurement. A carbon-containing magnesia refractory (MgO-C) was selected for a case study. Based on the results obtained from tests, fracture mechanical parameters such as the specific fracture energy and the nominal notch tensile strength were calculated. An inverse simulation procedure applying the finite element method yields tensile strength, the total specific fracture energy, and the strain-softening behavior. Additionally, the creep behavior was also considered for the evaluation.
AB - The mode I fracture behavior of ordinary refractory materials is usually tested with the wedge-splitting test. At elevated temperatures, the optical displacement measurement is difficult because of the convection in the furnace and possible reactions of refractory components with the ambient atmosphere. The present paper introduces a newly developed testing device, which is able to perform such experiments up to 1500 °C. For the testing of carbon-containing refractories a gas purging, for example, with argon, is possible. Laser speckle extensometers are applied for the displacement measurement. A carbon-containing magnesia refractory (MgO-C) was selected for a case study. Based on the results obtained from tests, fracture mechanical parameters such as the specific fracture energy and the nominal notch tensile strength were calculated. An inverse simulation procedure applying the finite element method yields tensile strength, the total specific fracture energy, and the strain-softening behavior. Additionally, the creep behavior was also considered for the evaluation.
KW - Carbon-containing refractories
KW - Fracture energy
KW - Fracture parameters
KW - High-temperature wedge splitting test
KW - Reducing condition
KW - Strain-softening
UR - http://www.scopus.com/inward/record.url?scp=85070928069&partnerID=8YFLogxK
U2 - 10.3390/app9163249
DO - 10.3390/app9163249
M3 - Article
AN - SCOPUS:85070928069
VL - 9.2019
JO - Applied Sciences : open access journal
JF - Applied Sciences : open access journal
SN - 2076-3417
IS - 16
M1 - 3249
ER -