Pulse phase thermography (PPT): potential characterisation technology for grossly sculpted surfaces
Pulse phase thermography (PPT): potential characterisation technology for grossly sculpted surfaces
Surfi-Sculpt® is a novel electron beam (EB) direct writing technique invented at TWI. The process utilises an intense beam of electrons to displace material on the surface. Complex surface modifications can be produced including the manufacture of protrusions or pits ranging from a few tens of microns to several millimetres high or deep. The complex surface shapes, large angles of obliquity and overhangs of these sculpted features pose massive challenges to their surface characterisation. A review of existing rough surface characterisation techniques shows that there are no accepted methods available for such grossly textured surfaces. Thus, this paper focuses the development of new technologies to enable characterisation of EB sculpted surface features.
Pulse Phase Thermography (PPT) has been used to examine defects and damage in metal and composite structure [ , ]. The technology utilizes an infrared detector to record the surface temperature evolution when the specimen is being heated with a pulsed heat source like the photographic flash light. A capture in video mode up to 269 images per second, leads to the development of a time history with respect to the heat pulse. Phase data is then used as a source for quantitative analysis to enable features with different depths to be distinguished.
Feasibility tests of transmission and reflection modes of PPT on complex surface features of blind holes with various depths are used as groundwork for surface feature recognition and measurement. Verification of three-dimensional surface topographical results obtained by PPT will be using scanning electron microscopy (SEM) and micro computed tomography (CT).
Ang, K.C.
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Wood, R.J.
d9523d31-41a8-459a-8831-70e29ffe8a73
Wang, L.
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Dulieu-Barton, J.M.
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Dance, B.G.
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Buxton, A.
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20 September 2007
Ang, K.C.
316485c0-def8-4a59-9bbd-0b042aa245a2
Wood, R.J.
d9523d31-41a8-459a-8831-70e29ffe8a73
Wang, L.
c50767b1-7474-4094-9b06-4fe64e9fe362
Dulieu-Barton, J.M.
9e35bebb-2185-4d16-a1bc-bb8f20e06632
Dance, B.G.
93282d2d-1ea3-487c-95bf-392a6179a25c
Buxton, A.
890d0885-8c30-4750-b889-2523a4aa4ab6
Ang, K.C., Wood, R.J., Wang, L., Dulieu-Barton, J.M., Dance, B.G. and Buxton, A.
(2007)
Pulse phase thermography (PPT): potential characterisation technology for grossly sculpted surfaces.
Novel Applications of Surface Modification (NASM 2007), Southampton, UK.
17 - 19 Sep 2007.
1 pp
.
Record type:
Conference or Workshop Item
(Other)
Abstract
Surfi-Sculpt® is a novel electron beam (EB) direct writing technique invented at TWI. The process utilises an intense beam of electrons to displace material on the surface. Complex surface modifications can be produced including the manufacture of protrusions or pits ranging from a few tens of microns to several millimetres high or deep. The complex surface shapes, large angles of obliquity and overhangs of these sculpted features pose massive challenges to their surface characterisation. A review of existing rough surface characterisation techniques shows that there are no accepted methods available for such grossly textured surfaces. Thus, this paper focuses the development of new technologies to enable characterisation of EB sculpted surface features.
Pulse Phase Thermography (PPT) has been used to examine defects and damage in metal and composite structure [ , ]. The technology utilizes an infrared detector to record the surface temperature evolution when the specimen is being heated with a pulsed heat source like the photographic flash light. A capture in video mode up to 269 images per second, leads to the development of a time history with respect to the heat pulse. Phase data is then used as a source for quantitative analysis to enable features with different depths to be distinguished.
Feasibility tests of transmission and reflection modes of PPT on complex surface features of blind holes with various depths are used as groundwork for surface feature recognition and measurement. Verification of three-dimensional surface topographical results obtained by PPT will be using scanning electron microscopy (SEM) and micro computed tomography (CT).
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More information
Published date: 20 September 2007
Venue - Dates:
Novel Applications of Surface Modification (NASM 2007), Southampton, UK, 2007-09-17 - 2007-09-19
Organisations:
Engineering Mats & Surface Engineerg Gp, Fluid Structure Interactions Group
Identifiers
Local EPrints ID: 49147
URI: http://eprints.soton.ac.uk/id/eprint/49147
PURE UUID: 0a8c75c1-3330-4871-84e0-489ad7383eb9
Catalogue record
Date deposited: 26 Oct 2007
Last modified: 12 Dec 2021 03:18
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Contributors
Author:
K.C. Ang
Author:
B.G. Dance
Author:
A. Buxton
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