TY  - GEN
N2  - Two steel substrate test panels were developed to represent common plate thicknesses found on naval vessels and scanned using the Babcock developed ultrasonic technique. One sample comprised of a series of slotted surface breaking flaws of varying widths and through thicknesses to represent fracturing/cracking. The inspection method detected simulated cracking to a depth of 2mm and 0.5mm in width. The second sample included numerous loss of wall thickness areas of varying diameters and through thicknesses, with the smallest detectable loss of wall thickness being 0.1mm at a 15mm diameter. After proving confidence in detection, there was a need to characterise flaws to provide support and ascertain a repair action. Samples were produced that were subjected to either impact or heat exposure to induce realistic representative damage. The practical ultrasonic method was successfully used to independently characterise between the samples, with induced de-laminations caused by blisters, and multi layered matrix cracking caused by varying levels of projectile impacts, due to their unique morphology.
AB  - Two steel substrate test panels were developed to represent common plate thicknesses found on naval vessels and scanned using the Babcock developed ultrasonic technique. One sample comprised of a series of slotted surface breaking flaws of varying widths and through thicknesses to represent fracturing/cracking. The inspection method detected simulated cracking to a depth of 2mm and 0.5mm in width. The second sample included numerous loss of wall thickness areas of varying diameters and through thicknesses, with the smallest detectable loss of wall thickness being 0.1mm at a 15mm diameter. After proving confidence in detection, there was a need to characterise flaws to provide support and ascertain a repair action. Samples were produced that were subjected to either impact or heat exposure to induce realistic representative damage. The practical ultrasonic method was successfully used to independently characterise between the samples, with induced de-laminations caused by blisters, and multi layered matrix cracking caused by varying levels of projectile impacts, due to their unique morphology.
AD  - Devonport Royal Dockyard
AD  - Babcock Energy and Marine Technology
T1  - A Practical Ultrasonic Inspection Method for Detecting and Characterising Defects Found Within Composite Repairs
DA  - 2018-10-02
AU  - Downing, J
AU  - Hook, A
L1  - https://library.imarest.org/record/7583/files/INEC%202018%20Paper%20019%20Downing%20FINAL.pdf
JF  - Conference Proceedings of INEC
VL  - INEC 2018
PY  - 2018-10-02
ID  - 7583
L4  - https://library.imarest.org/record/7583/files/INEC%202018%20Paper%20019%20Downing%20FINAL.pdf
KW  - Phased Array Ultrasonic Testing
KW  - Composite Repair
KW  - Fibre Volume Fraction
KW  - Void Content
KW  - Composite Flaw Characterisation
KW  - Glass Fibre Reinforced Plastic
KW  - Carbon Fibre Reinforced Plastic
TI  - A Practical Ultrasonic Inspection Method for Detecting and Characterising Defects Found Within Composite Repairs
Y1  - 2018-10-02
L2  - https://library.imarest.org/record/7583/files/INEC%202018%20Paper%20019%20Downing%20FINAL.pdf
LK  - https://www.imarest.org/inec
LK  - https://library.imarest.org/record/7583/files/INEC%202018%20Paper%20019%20Downing%20FINAL.pdf
UR  - https://www.imarest.org/inec
UR  - https://library.imarest.org/record/7583/files/INEC%202018%20Paper%20019%20Downing%20FINAL.pdf
ER  -