Find­ing fin­ger-joint faults

New Zealand Logger - - Woodtech 2018 -

AN AMER­I­CAN COM­PANY HAS DE­VEL­OPED a sys­tem for de­tect­ing faults in fin­ger­jointed wood that could cause pre­ma­ture failure of struc­tural com­po­nents, such as CLT pan­els or lam­i­nated beams.

Cal­i­for­nia-based Airstar Inc spe­cialises in the non-de­struc­tive test­ing of prod­ucts and at last month’s WoodTECH 2018 con­fer­ence in Ro­torua, it out­lined a way of iden­ti­fy­ing faults in wood com­po­nents us­ing a com­bi­na­tion of scan­ning and ul­tra-sound tech­nol­ogy.

Airstar’s Pres­i­dent, Jan Strycek, says that by link­ing con­ven­tional scan­ning with ul­tra-sound sys­tems it is pos­si­ble to de­tect de­fects in fin­ger joint­ing down to the size of a pin hole.

“That’s very im­por­tant, be­cause these sorts of faults can lead to bond­ing is­sues,” he says.

The sys­tem can also be used for de­tect­ing end splits and check­ing in boards.

NZL

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