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Filtering by: Subject Optical scanners Non-Academic Affiliation Oregon State University. Graduate School

A study of load-induced microdeformations within wood-based structural members using optical scanning techniques

Creator:

Irving, David C.

Abstract:

Efficient use of wood in structural applications depends upon the accuracy with which we can predict the mechanical behavior of members under load. Most methods of lumber grading and laminated beam design depend upon statistical and/or empirical techniques in which averaged properties for complete members are derived. A knowledge of...

Resource Type:

Masters Thesis
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:

Using Optical Scanning and Ultrasonic Stress Wave Analysis Systems Abstract approved