Sizing the length of surface breaking cracks using vibrothermography

被引：8

作者：

Cavallone, C. ^{[1
,2
]}

Colom, M. ^{[1
]}

Mendioroz, A. ^{[1
]}

Salazar, A. ^{[1
]}

Palumbo, D. ^{[2
]}

Galietti, U. ^{[2
]}

机构：

[1] Univ Pais Vasco UPV EHU, Escuela Ingn Bilbao, Dept Fis Aplicada 1, Plaza Ingeniero Torres Quevedo 1, Bilbao 48013, Spain

[2] Politecn Bari, Dept Mech Math & Management, Viale Japigia 182, I-70126 Bari, Italy

来源：

NDT & E INTERNATIONAL | 2020年 / 112卷 / 112期

关键词：

Crack length; Vibrothermography; Infrared thermography; Non-destructive evaluation; VERTICAL CRACKS; DAMAGE; TIP;

D O I：

10.1016/j.ndteint.2020.102250

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Ultrasound excited thermography is used to determine the length of vertical surface breaking cracks. Two methods are proposed based on the analysis of the maximum temperature reached along the line containing the crack and the time at which the maximum temperature occurs. It is shown that, for short bursts, the full width at half maximum of the maximum temperature curve provides the crack length, and that the time at which the maximum temperature occurs increases beyond the crack tip. The range of application of the methods is analysed and the validity is checked taking data on samples containing artificial calibrated cracks.

引用

页数：9

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