Sylvatest TRIO

Nondestructive technology using ultrasounds for wood quality assessment

Sylvatest TRIO is the 3rd generation of the key reference device SYLVATEST designed to estimate wood quality assessment from the standing trees to the structural components.

Sylvatest TRIO measures the time of flight of ultrasonic waves in the wood between two transducers: the emitter and the receiver.

Additionally, the peak of energy of the transmitted waves is recorded (mV). A measurement takes no longer than several seconds.


The software SYLVIUS has been specifically developed to analyze Sylvatest TRIO data and is available on any Windows Mobile handheld computer.


• Forbidden City, Beijing, Chine

• Hôtel des Invalides, Paris, France

• CERN globe, Geneva, Switzerland

• Mairie d’Abries, Abries, France

• Multi activities Center, Saint Pierre d’Entremont, France

• Hôtel Royal, Montreux, Switzerland

• Regional Natural Park, Chartreuse, France

• Regional Natural Park, Haut Jura, France




Device dimensions 200x100x45 [mm]
Device weight 300 [g]
Connectors LEMO connectors for the cables
Serial port RS232
Battery 4 batteries  R6 1.5V
Ultrasounds frequency 22 kHz
Measuring lengths* Sawing and round timber (lengthwise measurements) : up to 20 m
  Standing trees (radial measurement) : up to 1.20m. (according to the species)
Logiciel SYLVIUS Software for Sylvatest TRIO data analysis on Windows mobile
  handheld computer














*The measuring length depends of the cables lengths. By default, the device is delivered with cables allowing 7 meters long measurements.





Structural beams mechanical grading (round or square)

Sylvatest TRIO is the ideal tool to evaluate the mechanical properties of a wooden structural component thanks to longitudinal measurements (fibers’ direction).

Those measurements can be “direct” (transducers facing each other) or “indirect” (transducers applied with an angle).

The measurements can be performed for both: square (beams, sawing, GLT…) and round (logs, poles…) profiles.

For the usual species, Sylvatest TRIO data can be translated into a mechanical strength class defined by standards (EN338 for Europe).

SYLVIUS software interprets immediately Sylvatest TRIO data in displaying the mechanical strength class of the measured component.



Standing trees diagnostic

Sylvatest TRIO can be used in order to evaluate standing trees degradation thanks to radial measurements (perpendicular to wood fibers).

The result gives a trunk degradation ratio: this is the difference between the measured specimen and a sound tree of the same species and same diameter.

SYLVIUS software interprets immediately Sylvatest TRIO data in illustrating the result with a graphic.



Building expertise

Sylvatest TRIO is the key tool for wooden structures experts. The mechanical residual strength can be evaluated for any wooden structural component from the slabs to the frame as well for historical buildings as for newer ones (Glue laminated timber etc.).

Thanks to Sylvatest TRIO results, maintenance or reinforcement priorities can be clearly identified.

SYLVIUS software allows an immediate diagnostic based on Sylvatest TRIO data.



Telecom/Utility new wood poles quality management (Luxpole)

Sylvatest TRIO is the key tool for Luxpole concept (ref. Luxpole section).