TY  - JOUR
ID  - 21059284
AU  - Mandache, C.
AU  - Levesque, D.
AU  - Dubourg, L.
AU  - Gougeon, P.
T1  - Non-destructive detection of lack of penetration defects in friction stir welds
JO  - Science and Technology of Welding & Joining
SP  - 295
EP  - 303
VL  - 17
IS  - 4
PY  - 2012
KW  - Non-destructive evaluation
KW  - Friction stir welding
KW  - Lack of penetration
KW  - Eddy current
KW  - Ultrasonic waves
KW  - Inspection
N2  - This study focuses on the comparative investigation of different non-destructive inspection (NDI) techniques for detecting the lack of penetration discontinuities in butt joint friction stir (FS) welds. A variably sized lack of penetration has been introduced purposely by progressively changing the tool pin’s length. While inspecting the weld from the discontinuity side provides results of higher sensitivity, service inspection of the FS welded components requires evaluation of the welding tool’s side, opposite the defect containing one. Non-destructive techniques amenable for inspection from either the tool side or the far side of the weld are analysed, and results from inspection are presented for comparison. Subsequently, bending tests and metallographic examinations were employed to confirm the size of the lack of penetration defects and correlate these results with the NDI capabilities.
M1  - 139269
DO  - http://dx.doi.org/10.1179/1362171812Y.0000000007
U3  - NRC Institute for Aerospace Research
U3  - Institut de recherche aérospatiale du CNRC (IRA-IAR)
U3  - NRC Industrial Materials Institute
U3  - Institut des matériaux industriels du CNRC (IMI-IMI)
ER  -