Thermographic quality assurance at Aarsleff Pipe Technologies
1. www.aarsleff.com
Introduction
At Per Aarsleff A/S, Pipe Technologies, we strive
to offer better value for our customers through
cost reductions and stringent quality assurance
at every stage of our production. As a market-
leader in trenchless pipe renewal we focus on
achieving this goal by continuous improvements
on our in-house technologies.
In the manufacturing of cured-in-place-pipes
(CIPP), airtightness is key! The CIPP-liners con-
sist of multiple layers of woven polyester felts
sewed together, where the end layer has a
coated surface sealed with a plastic tape. This
sealing must remain airtight both in regard to
our impregnation processes and installation
methods to ensure a high-end quality product
for our customers.
Problem overview
In order to ensure a uniform and standardized
weld quality in our production, a thermographic
quality control system was needed to reduce
the necessity of visual inspection.
Small irregularities in weld sizes and later-
al movements in the material were challenges
that needed to be solved in order to successfully
implement a system into our production process.
Solution overview
Eigen Innovations provided the solution to
resolve these challenges by developing an
algorithm through their Intellexon® software
platform.
The software is programmed to process large
amounts of data in real-time in order to provide
immediate feedback to operators and ensure
predetermined parameter thresholds are not
exceeded.
Connecting one of FLIR’s fixed-mounted auto-
mation cameras to the platform captures up to
60 frames of high resolution digital thermal data
per second, enabling a rich real-time view of
exactly what is happening within the welding
parameters.
The collaboration with Eigen Innovations will
improve the quality of our CIPP manufacturing,
reduce the need for visual quality inspection,
and has given us new insights that we can use
in other parts of our process.
Maintenance Engineer,
Jacob Hovad
Thermographic quality
assurance
at Aarsleff Pipe Technologies
Per Aarsleff A/S
Main office
Lokesvej 15
DK-8230 Aabyhoej
Denmark
Tel +45 8744 2222
Fax +45 8744 2249
Copenhagen office
Industriholmen 2
DK-2650 Hvidovre
Denmark
Tel +45 3679 3333
Fax +45 3679 3300
CVR no. 37542784
