Inspection Of Timber Bridges Using Stress Wave Timing Nondestructive Evaluation Tools A Guide For Use And Interpretation General Technical Report Fpl Gtr 114 Us Dept Of Agriculture
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Nondestructive Testing Technique to Quantify Deterioration from Marine Borer Attack in Sitka Spruce and Western Hemlock Logs
Author | : Robert Jon Ross |
Publisher | : |
Total Pages | : 8 |
Release | : 2014 |
Genre | : Marine borers |
ISBN | : |
Stress-wave nondestructive evaluation (NDE) techniques are used widely in the forest products industry--from the grading of wood veneer to inspection of timber structures. Inspection professionals frequently use stress-wave NDE techniques to locate internal voids and decayed or deteriorated areas in large timbers. Although these techniques have proven useful, little information exists concerning the relationship between stress-wave parameters and deterioration observed as a consequence of marine borer attack. In this pilot test, we examined the relationship between stress-wave transmission time and the quality of wood in Sitka spruce and western hemlock logs that had varying degrees of deterioration as a consequence of attack from marine borers. Stress-wave transmission time, perpendicular to grain, was measured at several locations on each log. The logs were then sawn into lumber, which was then visually evaluated. A relationship was observed between stress-wave transmission time and deterioration of the logs and the yield of lumber from the logs.
Covered Bridge Manual
Author | : Phillip C. Pierce |
Publisher | : |
Total Pages | : 348 |
Release | : 2005 |
Genre | : Covered bridges |
ISBN | : |
Nondestructive Testing for Assessing Wood Members in Structures
Author | : Robert Jon Ross |
Publisher | : |
Total Pages | : 32 |
Release | : 1991 |
Genre | : Forest products |
ISBN | : |