The spall failure delay: Experimental observation and theoretical analysis

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The spall failure delay: Experimental observation and theoretical analysis. / Mikhailova, N. V.; Smirnov, I. V.; Balandin, V. V.; Balandin, V. Vl; Bragov, A. M.; Petrov, Yu V.

In: International Journal of Impact Engineering, Vol. 164, 104194, 06.2022.

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

Author

Mikhailova, N. V. ; Smirnov, I. V. ; Balandin, V. V. ; Balandin, V. Vl ; Bragov, A. M. ; Petrov, Yu V. / The spall failure delay: Experimental observation and theoretical analysis. In: International Journal of Impact Engineering. 2022 ; Vol. 164.

BibTeX

@article{cb1e6c2f74e04885ba45a76c573973e0,

title = "The spall failure delay: Experimental observation and theoretical analysis",

abstract = "Despite significant research on spallation, there are still unexplored gaps such as the spall fracture delay. In this case, fracture occurs not at the growth stage of tensile stress in a spall section but at the stage of stress stabilization or reduction. However, no attention was paid to this effect. In this paper, we present an experimental and theoretical study to verify the existence of the delay effect. The experiments were carried out on steel specimens under the action of threshold and overloaded impulses. It was found that the spall fracture delay can be realized at the threshold fracture impulses. In order to calculate the fracture stress, the stress history should be considered correctly. For this purpose, the incubation time approach was employed. The incubation time criterion allowed calculating the stress rate dependence of fracture stress and time to fracture taking into account the spall fracture delay at threshold impulses. The calculated curves are in good agreement with the experimental points.",

keywords = "Fracture delay, Incubation time criterion, Spall fracture, Threshold impulse",

author = "Mikhailova, {N. V.} and Smirnov, {I. V.} and Balandin, {V. V.} and Balandin, {V. Vl} and Bragov, {A. M.} and Petrov, {Yu V.}",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = jun,

doi = "10.1016/j.ijimpeng.2022.104194",

language = "English",

volume = "164",

journal = "International Journal of Impact Engineering",

issn = "0734-743X",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The spall failure delay: Experimental observation and theoretical analysis

AU - Mikhailova, N. V.

AU - Smirnov, I. V.

AU - Balandin, V. V.

AU - Balandin, V. Vl

AU - Bragov, A. M.

AU - Petrov, Yu V.

PY - 2022/6

Y1 - 2022/6

N2 - Despite significant research on spallation, there are still unexplored gaps such as the spall fracture delay. In this case, fracture occurs not at the growth stage of tensile stress in a spall section but at the stage of stress stabilization or reduction. However, no attention was paid to this effect. In this paper, we present an experimental and theoretical study to verify the existence of the delay effect. The experiments were carried out on steel specimens under the action of threshold and overloaded impulses. It was found that the spall fracture delay can be realized at the threshold fracture impulses. In order to calculate the fracture stress, the stress history should be considered correctly. For this purpose, the incubation time approach was employed. The incubation time criterion allowed calculating the stress rate dependence of fracture stress and time to fracture taking into account the spall fracture delay at threshold impulses. The calculated curves are in good agreement with the experimental points.

AB - Despite significant research on spallation, there are still unexplored gaps such as the spall fracture delay. In this case, fracture occurs not at the growth stage of tensile stress in a spall section but at the stage of stress stabilization or reduction. However, no attention was paid to this effect. In this paper, we present an experimental and theoretical study to verify the existence of the delay effect. The experiments were carried out on steel specimens under the action of threshold and overloaded impulses. It was found that the spall fracture delay can be realized at the threshold fracture impulses. In order to calculate the fracture stress, the stress history should be considered correctly. For this purpose, the incubation time approach was employed. The incubation time criterion allowed calculating the stress rate dependence of fracture stress and time to fracture taking into account the spall fracture delay at threshold impulses. The calculated curves are in good agreement with the experimental points.

KW - Fracture delay

KW - Incubation time criterion

KW - Spall fracture

KW - Threshold impulse

UR - http://www.scopus.com/inward/record.url?scp=85126141622&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/ce8e07cb-820a-32ea-b120-d114e4e46e8c/

U2 - 10.1016/j.ijimpeng.2022.104194

DO - 10.1016/j.ijimpeng.2022.104194

M3 - Article

AN - SCOPUS:85126141622

VL - 164

JO - International Journal of Impact Engineering

JF - International Journal of Impact Engineering

SN - 0734-743X

M1 - 104194

ER -

ID: 93920757