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Filtering by: Subject Douglas fir -- Mechanical properties -- Testing Remove constraint Subject: Douglas fir -- Mechanical properties -- Testing Degree Level Master's Remove constraint Degree Level: Master's

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Estimating spatial changes in acoustic velocity in felled Douglas-fir stems

Creator:

Dowding, Bodie

Abstract:

To compete with other building materials, the wood products industry must find a way to increase value and lower costs. Wood stiffness is important for most wood uses. Value can be increased and costs can be lowered by sorting logs for stiffness in the woods using acoustic devices mounted on...

Resource Type:

Masters Thesis

Full Text:

Douglas-fir Stems Abstract approved: Glen Murphy To compete with other building materials
Stiffness of Douglas-fir lumber : effects of wood properties and genetics

Creator:

Vikram, Vikas

Abstract:

Wood stiffness is one of the most important properties of lumber and veneer. We studied wood stiffness (modulus of elasticity, MOE), wood density, microfibril angle, and knots in a 25 year-old wind pollinated progeny test (50 families, ~ 373 trees) of coastal Douglas-fir to understand the potential for genetically improving...

Resource Type:

Masters Thesis

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: Stiffness of Douglas-fir Lumber: Effects of Wood Properties and Genetics. Abstract approved
Using Acoustic Measurements and Inventory Data to Estimate Stiffness in Standing Douglas-Fir Trees

Creator:

Delgado Trejo, Jorge Luis

Abstract:

Total US lumber production in 2011 was 77.9 million cubic meters. Its primary use was for housing and construction. There is a growing concern that the structural properties for wood are being reduced as trees are harvested at much younger ages as the wood supply shifts from older to younger...

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Masters Thesis

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Stiffness in Standing Douglas-Fir Trees. AN ABSTRACT OF THE THESIS OF Jorge Luis Delgado Trejo
Evaluation of a prototype NIR system for Douglas-fir wood density estimation

Creator:

Belart Lengerich, Maria Francisca

Abstract:

Forest products companies in the U.S. face vigorous competition from other wood producers around the world and other industries (steel, aluminum, plastics, composites). To be competitive, forest companies need to control costs, sort and allocate logs to the most appropriate markets, and recover more value at time of harvest. Interest...

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Masters Thesis

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for Douglas-fir Wood Density Estimation. Abstract approved: Glen E. Murphy Forest

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Academic Affiliation

Forest Engineering Resources and Management2
Forest Ecosystems and Society1
Forest Engineering1

Advisor

Murphy, Glen E.2
Boston, Kevin1
Howe, Glenn T.1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 2009 to 2016

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Committee Member

Lachenbruch, Barbara2
Chen, Yong1
Hailemariam, Temesgen1
Kiser, Jim1
Maguire, Doug1
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Creator

Belart Lengerich, Maria Francisca1
Delgado Trejo, Jorge Luis1
Dowding, Bodie1
Vikram, Vikas1

Date

Date range begin – Date range end

Current results range from 2008 to 2015

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Decade

2010-20192
2000-20092

Degree Field

Forest Engineering2
Forest Science1
Sustainable Forest Management1

Degree Level

Master's[remove]4

Degree Name

Master of Science (M.S.)4

Language

English [eng]4

License

All rights reserved4

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Masters Thesis4

Rights Statement

In Copyright4

Subject

Douglas fir -- Mechanical properties2
Douglas fir -- Mechanical properties -- Measurement2
Wood -- Density -- Measurement2
Acoustic velocity meters1
Douglas fir -- Age1
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