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Industrial devices for nondestructive testing
Bing Auto grading machine (1999-2004)
From the laboratorial tool Bing, a
prototype of automaticc grading machine called Bing Auto for
classification of sawn timbers was produced in collaboration with
FCBA. This prototype was
based on the same principle that the laboratory tool, but it is entirely automated.
The analysis and calculation software control is directly provided directly by Cirad as an ActiveX
control or a DLL that can be easily integrated into every
software designed for Microsoft Windows.
France Telecom poles diagnosis device (1998-2002)
Two prototypes Ping for evaluation of residual
lifespan of in-situ wooden line poles were developed within the framework of a contract with the French
telephony operator France Telecom. The analysis device is portable, independent, and of minimal difficulty for
field uses. Ping device is composed of an acquisition chain similar to BING device, with impact hammer and
accelerometer. Signals analysis and results are provided by a software especially developed for this application.
Theoretical bases and signal processing, adapted to the in-situ checking of the pole structure, were carried
out at Cirad in partnership with the LMA (CNRS,
Marseilles) and FCBA.
Wooden parts of planes diagnosis device (2002-2003)
Development of equipment Apex CND device used for detection of detachments in the assembly
of DR400 (civil plane) wing's wooden pieces. This detection is based on an integrated system of real time measurements
and analyses of mechanical vibrations atlow frequencies. Device was concluded for
Apex Aircraft company and delivered
on October 2003. A training course for the personnel was carried out on the day of delivery.
Delaminations detection (2003-2008)
Testing device Lidiaa
conceived and adjusted to detect delaminations which can appear between
composed coating and concrete support, ensuring the sealing of
EDF's (French electricity producer and provider) nuclear engines enclosure.
Lidiaa equipment is a portable tool for non destructive testing, based on an integrated system of real time
measurements and analyses of rubbing contact inducted vibrations (French patent
FR 01 12338, 2001). It is constitued bty an handheld probe (cf. photo) linked to a waterproof rugged
case containing electronics and pilot PC.
Equipment produced for IPRS company and validated in contaminated area (2006).
Appraises
2007: End of the study for DGAC
in partnership with the FCBA, aiming the research into nondestructive
compression crack detection methods for wood structures (civil aviation).
The final report was submitted and reviewed in early 2008, you can view it
in French and English on
civil aviation's website.
2002-2003: Development and calibration of an automatised process for nondestructive quality testing applied to terra-cotta tiles and based on vibratory response analyze in the acoustic field.
2002: Mechanical characterization of Italian historical monuments/buildings elements, and training seminar. Ferrara University, Department of civil engineering, Italy.
2002: Nondestructive evaluation of structural wooden elements of a building identified as "Bâtiment Nord-Est des Ateliers Normands". Traditional frame degraded by termites and mushrooms. Ateliers Normand, Nantes. Appraise realized on the request of J.L. Dussaux audit cabinet.
2001: Beams of French historical buildings. Project "Mechanical analysis strategy of ancient wood structures", Wood Civil Engineering Network, stage 1.
2001: Beams of wooden carpentries and visible rooms' beams (degraded by termites and mushrooms), contemporary houses located in Azille and Villefour (Languedoc-Roussillon, France). Appraise realized upon a request of Montpellier justice court.
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