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Filtering by: Subject Libraries -- Quality control Remove constraint Subject: Libraries -- Quality control Advisor Funck, James W. Remove constraint Advisor: Funck, James W.

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List Gallery Masonry

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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
On-line lumber quality control technique using image processing

Creator:

Aslam, Fatima

Abstract:

Product quality control is the back bone for an efficient process control system. By monitoring the size of the board cut in a sawmill, performance of the production system can be controlled. Feedback from the quality control system is used to evaluate the status of the production system and also...

Resource Type:

Masters Thesis
Performance analysis of the hardware and software components of an optical scanning system for monitoring lumber sizes

Creator:

Leavengood, Scott A.

Abstract:

In recent years, the forest products industry has been forced to cope with a supply of raw material that is declining in both quality and quantity. In addition, log prices are escalating rapidly. Because log costs may represent as much as 90 percent of the overall production costs of lumber...

Resource Type:

Masters Thesis
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:

understanding their formation, effect on glue-bond quality, and best methods to control their formation during

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Academic Affiliation

Forest Products2
Wood Science and Engineering2
Electrical and Computer Engineering1

Advisor

Funck, James W.[remove]4
Reeb, James E.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1991 to 2009

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Committee Member

Atre, Sundar1
Gupta, Rakesh1
Reeb, James1
Rochefort, Willie1

Creator

Devallance, David B.2
Aslam, Fatima1
Leavengood, Scott A.1

Date

Date range begin – Date range end

Current results range from 1990 to 2009

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Decade

2000-20092
1990-19992

Degree Field

Forest Products2
Wood Science2
Electrical and Computer Engineering1

Degree Level

Master's3
Doctoral1

Degree Name

Master of Science (M.S.)3
Doctor of Philosophy (Ph.D.)1

Language

English [eng]4

License

All rights reserved2

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No3

Resource Type

Masters Thesis3
Dissertation1

Rights Statement

In Copyright3
Copyright Not Evaluated1

Subject

Lumbering -- Quality control2
Gluing1
Image processing -- Digital techniques1
Lumber -- Measurement1
Lumbering -- Data processing1
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