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Dynamic properties of wood using the Split-Hopkinson Pressure Bar.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Dynamic properties of wood using the Split-Hopkinson Pressure Bar./
Author:	Gilbertson, Christopher G.
Description:	408 p.
Notes:	Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7458.
Contained By:	Dissertation Abstracts International72-12B.
Subject:	Applied Mechanics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3474597
ISBN:	9781124913315

Dynamic properties of wood using the Split-Hopkinson Pressure Bar.
Gilbertson, Christopher G.

Dynamic properties of wood using the Split-Hopkinson Pressure Bar. - 408 p.

Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7458.

Thesis (Ph.D.)--Michigan Technological University, 2011.

Strain rate significantly affects the strength of a material. The Split-Hopkinson Pressure Bar (SHPB) was initially used to study the effects of high strain rate (&sim;1000 1/s) testing of metals. Later modifications to the original technique allowed for the study of brittle materials such as ceramics, concrete, and rock. While material properties of wood for static and creep strain rates are readily available, data on the dynamic properties of wood are sparse. Previous work using the SHPB technique with wood has been limited in scope to variability of only a few conditions and tests of the applicability of the SHPB theory on wood have not been performed.

ISBN: 9781124913315Subjects--Topical Terms:

845450
Applied Mechanics.

Dynamic properties of wood using the Split-Hopkinson Pressure Bar.
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035 $a (UMI)AAI3474597
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100 1 $a Gilbertson, Christopher G. $3 845463
245 1 0 $a Dynamic properties of wood using the Split-Hopkinson Pressure Bar.
300 $a 408 p.
500 $a Source: Dissertation Abstracts International, Volume: 72-12, Section: B, page: 7458.
500 $a Adviser: Theresa M. Ahlborn.
502 $a Thesis (Ph.D.)--Michigan Technological University, 2011.
520 $a Strain rate significantly affects the strength of a material. The Split-Hopkinson Pressure Bar (SHPB) was initially used to study the effects of high strain rate (&sim;1000 1/s) testing of metals. Later modifications to the original technique allowed for the study of brittle materials such as ceramics, concrete, and rock. While material properties of wood for static and creep strain rates are readily available, data on the dynamic properties of wood are sparse. Previous work using the SHPB technique with wood has been limited in scope to variability of only a few conditions and tests of the applicability of the SHPB theory on wood have not been performed.
520 $a Tests were conducted using a large diameter (3.0 inch (75 mm)) SHPB. The strain rate and total strain applied to a specimen are dependent on the striker bar length and velocity at impact. Pulse shapers are used to further modify the strain rate and change the shape of the strain pulse. A series of tests were used to determine test conditions necessary to produce a strain rate, total strain, and pulse shape appropriate for testing wood specimens.
520 $a Hard maple, consisting of sugar maple (Acer saccharum) and black maple (Acer nigrum), and eastern white pine (Pinus strobus) specimens were used to represent a dense hardwood and a low-density soft wood. Specimens were machined to diameters of 2.5 and 3.0 inches and an assortment of lengths were tested to determine the appropriate specimen dimensions. Longitudinal specimens of 1.5 inch length and radial and tangential specimens of 0.5 inch length were found to be most applicable to SHPB testing.
520 $a Stress/strain curves were generated from the SHPB data and validated with 6061-T6 aluminum and wood specimens. Stress was indirectly corroborated with gaged aluminum specimens. Specimen strain was assessed with strain gages, digital image analysis, and measurement of residual strain to confirm the strain calculated from SHPB data. The SHPB was found to be a useful tool in accurately assessing the material properties of wood under high strain rates (70 to 340 1/s) and short load durations (70 to 150 &mgr;s to compressive failure).
590 $a School code: 0129.
650 4 $a Applied Mechanics. $3 845450
650 4 $a Engineering, Civil. $3 845393
650 4 $a Engineering, Mechanical. $3 845387
650 4 $a Agriculture, Wood Technology. $3 845465
690 $a 0346
690 $a 0543
690 $a 0548
690 $a 0746
710 2 $a Michigan Technological University. $b Civil & Environmental Engineering. $3 845464
773 0 $t Dissertation Abstracts International $g 72-12B.
790 1 0 $a Ahlborn, Theresa M., $e advisor
790 1 0 $a Bulleit, William M. $e committee member
790 1 0 $a Miskioglu, Ibrahim $e committee member
790 1 0 $a Sandberg, Bogue $e committee member
790 1 0 $a Vitton, Stanley $e committee member
790 $a 0129
791 $a Ph.D.
792 $a 2011
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3474597