State of the art in decay assessment methods

[agg221]

Hi All,

 

As per title really, I am looking for information/sources regarding the state of the art in methods for assessment of the progression of decay. Really I am trying to establish at the top level what is used and what it tells you (with what degree of confidence). In this particular instance, I am trying to address a question I have been asked concerning what information it may be possible to gather when considering purchasing particular high value logs for milling, but the information might be more generally useful than this and I couldn't see a previous thread covering it, so it might be useful to collate it at a single point.

 

Alec

[Khriss]

Problys can't mill this one  but a nice buckle failure I found today K

[Steve Bullman]

  On 03/05/2018 at 12:10, agg221 said:

Hi All,

 

As per title really, I am looking for information/sources regarding the state of the art in methods for assessment of the progression of decay. Really I am trying to establish at the top level what is used and what it tells you (with what degree of confidence). In this particular instance, I am trying to address a question I have been asked concerning what information it may be possible to gather when considering purchasing particular high value logs for milling, but the information might be more generally useful than this and I couldn't see a previous thread covering it, so it might be useful to collate it at a single point.

 

Alec

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Hi Alec, Picus Tomograph is used to test decay in woods.  Not cheap to do, nor is the equipment available.  Its the only viable way though that I am aware of

[Anno]

if you can use more invasive methods there is also drilling via micro drill, Restographs or the Sibtec Decay Detection drill/digital microbe.

[Steve Bullman]

  On 09/05/2018 at 11:58, Anno said:

if you can use more invasive methods there is also drilling via micro drill, Restographs or the Sibtec Decay Detection drill/digital microbe.

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Resistographs are ok up to a certain sized timber.  Not come across the Sibtec before?

[Anno]

http://www.sibtec.com/digitalmicroprobe.html

 

 

[David Humphries]

  On 09/05/2018 at 12:00, Steve Bullman said:

Resistographs are ok up to a certain sized timber.  Not come across the Sibtec before?

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The DMP is pretty old tech now compared to the modern microdrills.

 

 

The Resi PD micro drills can be ordered with very long needles.

 

At least 1000 mm

 

But we find the 400mm one ample for mapping the T/R wall thickness.