Simple and robust methodology of defect thermal characterization based on thermal quadrupoles and polynomial approximation

Simple and robust methodology of defect thermal characterization based on thermal quadrupoles and polynomial approximation

Bibliographic Details
Parent link:	NDT & E International Vol. 124.— 2021.— [102522, 9 p.]
Corporate Authors:	Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Центр промышленной томографии Научно-производственная лаборатория "Бетатронная томография крупногабаритных объектов", Национальный исследовательский Томский политехнический университет Инженерная школа неразрушающего контроля и безопасности Центр промышленной томографии Научно-производственная лаборатория "Тепловой контроль"
Other Authors:	Nesteruk D. A. Denis Alekseevich, Vavilov V. P. Vladimir Platonovich, Chulkov A. O. Arseniy Olegovich, Burleigh D. Douglas
Summary:	Title screen An approach is proposed to evaluate the depth and thickness of planar defects detected by thermal nondestructive testing (TNDT) methods. A 1D 3-layer thermal problem is solved by using the technique of thermal quadrupoles, and the solution of the corresponding inverse problem is presented in the polynomial form. The inverse solution involves a number of TNDT experimental parameters, in particular, differential temperature signals, dimensionless contrasts and their observation times. The accuracy of defect characterization is in the range of 2–15% in defect depth and from 10 to 40% in defect thickness. It is believed that the proposed defect characterization approach can be easily implemented in existing TNDT systems to provide approximate values of defect parameters. Режим доступа: по договору с организацией-держателем ресурса
Published:	2021
Subjects:	электронный ресурс труды учёных ТПУ thermal nondestructive testing defect characterization thermal quadrupoles polynomial fitting неразрушающий контроль дефекты полиномы
Online Access:	https://doi.org/10.1016/j.ndteint.2021.102522
Format:	Electronic Book Chapter
KOHA link:	https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=665699

Internet

https://doi.org/10.1016/j.ndteint.2021.102522