Acoustic evaluation of loblolly pine tree- and lumber-length logs allows for segregation of lumber modulus of elasticity, not for modulus of rupture
نویسندگان
چکیده
منابع مشابه
Evaluation of Modulus of Elasticity of Laminated Strand Lumber by Non-Destructive Evaluation Technique
Non-destructive evaluation (NDE) techniques have been shown to be effective for evaluating mechanical properties of wood-based materials. In this study, transverse vibration of a beam under the two ends free boundary condition (FBV) was employed to measure the modulus of elasticity (MOE) in different strength directions of laminated strand lumber (LSL). It was found that the MOE values measured...
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چکیده ندارد.
15 صفحه اولFast online near infrared technique to predict modulus of elasticity and moisture content of sawn lumber
Wood products are required high degrees of structural performance and reliability in case of construction material. However, mechanical properties and moisture content of wood vary widely because of its highly anisotropic characteristics. Therefore, accurate nondestructive grading systems are desirable for wood industries. We developed a fast online grading apparatus for sawn lumber based on ne...
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this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
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ژورنال
عنوان ژورنال: Annals of Forest Science
سال: 2017
ISSN: 1286-4560,1297-966X
DOI: 10.1007/s13595-016-0615-9