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- Residual stress measurement of plates using shearography
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Residual stress measurement of plates using shearography Walsh, Allan Frederick
Abstract
Wood mills have used bandsaw blades for the primary breakdown of timber into lumber for centuries. By reducing the width of the saw cutting edge, material waste can be reduced. Thin-kerf saw blades are susceptible to lateral forces during cutting. To combat this behavior, saw lers introduce residual stresses into the blades. Classical methods for monitoring saw blade tension, such as the light-gap method, are subjective and analog. There exists a necessity to monitor the amount of residual stress induced into the blades reliably, using a nondestructive test. A newly proposed method for stress evaluation, incremental shearography, o ers the advantage of measuring transverse plate bending behavior at micron resolution. Shearography, a direct measure of surface slope, promises a robust, full- eld measurement using low-cost components. By comparing measured slopes to those analytically found, a stress resultant of the tensioning process can be inferred.
Item Metadata
Title |
Residual stress measurement of plates using shearography
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2020
|
Description |
Wood mills have used bandsaw blades for the primary breakdown of timber into lumber
for centuries. By reducing the width of the saw cutting edge, material waste can be
reduced. Thin-kerf saw blades are susceptible to lateral forces during cutting. To combat
this behavior, saw lers introduce residual stresses into the blades. Classical methods for
monitoring saw blade tension, such as the light-gap method, are subjective and analog.
There exists a necessity to monitor the amount of residual stress induced into the blades
reliably, using a nondestructive test. A newly proposed method for stress evaluation,
incremental shearography, o ers the advantage of measuring transverse plate bending
behavior at micron resolution. Shearography, a direct measure of surface slope, promises a
robust, full- eld measurement using low-cost components. By comparing measured slopes
to those analytically found, a stress resultant of the tensioning process can be inferred.
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Genre | |
Type | |
Language |
eng
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Date Available |
2020-01-14
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0388303
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2020-05
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Campus | |
Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International