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Filtering by: Subject Veneers and veneering -- Fracture Creator Devallance, David B.

Non-destructive evaluation of veneer using optical scanning and ultrasonic stress wave analysis systems

Creator:

DeVallance, David B.

Abstract:

Non-destructive commercial ultrasonic grading provides laminated veneer lumber (LVL) manufacturers a means for sorting veneer based on average ultrasonic propagation time (UPT) and/or average dynamic modulus of elasticity (MOEd). While this may provide reliable estimations of modulus of elasticity (MOE), little is known about the influence of veneer defects on...

Resource Type:

Dissertation

Full Text:

properties of veneer and LVL. It was hypothesized that inclusion of veneer defect and growth ring pattern
Influence of veneer roughness, lathe check, and annual ring characteristics on glue-bond performance of Douglas-fir plywood

Creator:

DeVallance, David B.

Abstract:

Current lathe technology, smaller diameter logs, smaller core diameters, and the sale of higher grade veneer for use in engineered wood products are all factors contributing to plywood manufacturers using rougher veneer with different lathe check characteristics. When rough veneer is encountered, plywood manufacturers typically increase the adhesive spread rate...

Resource Type:

Masters Thesis

Full Text:

Science presented on June 12, 2003. Title: Influence of Veneer Roughness, Lathe Check, and Annual Ring