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On the thermoelastic model of real materials with relaxation dynamics of defects. / Семенов, Борис Николаевич; Индейцев, Дмитрий Анатольевич; Морозов, Никита Федорович; Вавилов, ДмитрийСергеевич; Муратиков, Кирилл Львович; Кудрявцев, А.А.
в: Acta Mechanica, Том 235, № 7, 01.07.2024, стр. 4141-4148.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - On the thermoelastic model of real materials with relaxation dynamics of defects
AU - Семенов, Борис Николаевич
AU - Индейцев, Дмитрий Анатольевич
AU - Морозов, Никита Федорович
AU - Вавилов, ДмитрийСергеевич
AU - Муратиков, Кирилл Львович
AU - Кудрявцев, А.А.
PY - 2024/7/1
Y1 - 2024/7/1
N2 - It is shown that the conventional theory of thermoelasticity is insufficient to explain the behavior of pulsed laser ultrasonic signals from materials with defects. A theoretical model of thermoelasticity is proposed that takes into account the thermal excitation of defect states by laser radiation with their subsequent recovery to the initial state with a certain relaxation time. The linear model of thermoelasticity in terms of slow dynamics is developed. The difference in the behavior of ultrasonic signals from dielectrics and metals under pulsed laser excitation is analyzed and explained. It is shown that in the linear approximation of the thermoelastic model, slow dynamic effects can be taken into account by introducing an effective thermal coefficient.
AB - It is shown that the conventional theory of thermoelasticity is insufficient to explain the behavior of pulsed laser ultrasonic signals from materials with defects. A theoretical model of thermoelasticity is proposed that takes into account the thermal excitation of defect states by laser radiation with their subsequent recovery to the initial state with a certain relaxation time. The linear model of thermoelasticity in terms of slow dynamics is developed. The difference in the behavior of ultrasonic signals from dielectrics and metals under pulsed laser excitation is analyzed and explained. It is shown that in the linear approximation of the thermoelastic model, slow dynamic effects can be taken into account by introducing an effective thermal coefficient.
KW - термоупругая модель
KW - релаксационная динамика
UR - https://www.mendeley.com/catalogue/b7db4617-20b3-3f1c-8eff-1ac0a757ef07/
U2 - 10.1007/s00707-024-03924-z
DO - 10.1007/s00707-024-03924-z
M3 - Article
VL - 235
SP - 4141
EP - 4148
JO - Acta Mechanica
JF - Acta Mechanica
SN - 0001-5970
IS - 7
ER -
ID: 126939361