ASTM D – 00 Structural Panels in Flexure – Download as PDF File .pdf), Text File .txt) or read online. ASTM D – Standard Test Methods for Structural Panels in Flexure. GPa). Wilson and Parasin (26) compared two widths of ply wood ( and mm) using the pure-moment bending test in ASTM D (3).
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Measure width at mid-span to the nearest 0.
The axes of these surfaces shall remain parallel and at least one of them shall be free to turn about its axis or be loaded through rollers to prevent the application of friction forces to the surface of the specimen. We are a non-profit group that run this website to share documents.
The principle of a commercially available flexure testing machine complying with d30443 requirements is diagrammed in the figure below. Use of linear atsm transformers as transducers permits primaries and secondaries to be wired to produce a single signal proportional to their sum for indication or recording.
ASTM D – 87()e1 Standard Methods of Testing Structural Panels in Flexure
ASTM D D determines the flexural properties of strips cut from structural panels asrm panels up to 4 by 8 ft in size. Have a question about conducting the test for this standard? Four methods of tests are included: Control of Moisture Content 4. We need your help to maintenance this website. This method uses a span to depth ratio, specimen width, test fixture and test speed that make the method well suited for quality assurance.
If gages are read, take at least 12 and preferably 15 or more readings below the approximate proportional limit. Comparisons of results of plywood, veneer composites, and laminates with solid d043 or other plywood constructions will be greatly assisted if the thickness of the individual plies is measured to permit computation of section properties.
Rather, it is intended that the nominal thickness of the material under test should be used for determining the specimen length. This equipment is the subject of U.
ASTM D – 00 Structural Panels in Flexure – Free Download PDF
These errors are not aztm in Method C. The method is frequently used for quality assurance testing of oriented strand board. It is equally well suited for testing uniform or clear material whenever specimen size is adequate.
The specimen is supported on reaction bearings which permit the specimen and bearing plate to roll freely over the reactions as the specimen deflects. Four methods of tests are included: We are confident that we have what you are aztm for.
The width of the loading block shall exceed the width of test specimens. D — 00e1 Standard Test Methods for Structural Panels in Flexure1 This standard is issued under the fixed designation D ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. Modulus of Rupture can also be determined however it is subject to a notable degree of error based on the bottom span, loading points, and the total deflection at failure.
ASTM D 3043 – 00 Structural Panels in Flexure
Based on Eq 12, the loading rate is: When nonuniform material containing axtm variation, knots, knot-holes, sloping grain or other sources of large variability is tested for general construction and industrial asstm, a minimum specimen width of 24 in.
Significant errors in modulus of rupture can occur when nominal moment is used see Appendix X1. Variables Influencing Flexure 9. Resulting deflection at mid span is measured.
Test specimens are strips cut from panels that are up to 4′ by 8′. A description of the test method shall include equipment used to apply loads or moments to the panel, their points of application, deformation measuring equipment, and geometry of deformation measured.
These errors are not present in Method C. Radius of curvature of bearing plate or block shall not be so large as to cause bridging as the specimen bends. Specimens with veneer shall be free of visible knots or voids. Structural panels in use include plywood, waferboard, oriented strand board, and composites of veneer and of wood-based layers. EI 5 MR 8 where: Structural panels in use include plywood, waferboard, oriented strand board, and composites of veneer and of wood-based layers.
NOTE 8—For oriented strand board, the following equation provides loading rates within these guidelines: The test proceeds at a constant rate of head motion until either sufficient deflection data in the elastic range have been gathered or until specimen failure occurs.
All methods are applicable to material that is relative uniform in strength and stiffness properties. The choice of method will be dictated by the purpose of the test, type of material, and equipment asttm. Significant errors in modulus of rupture can occur when nominal moment is used see.
An approximate correction can be made. D304 published as D — When the principal direction of the face plies, laminations, strands, or wafers is parallel to the span, the length 2 Annual Book of ASTM Standards, Vol In cases where excessive local deformation may occur, atm bearing plates shall be used.
The depth of the specimen shall be equal to the thickness of material, and the width shall be 1 d33043. Moisture content determinations shall be made in accordance with Test Methods D This test method covers the flexural properties of strength and stiffness. Except for effects of nonuniformity of properties within a panel, specimen dimensions do not tend to influence test results. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
These errors are not present in Method C. The errors incurred by using nominal moment instead of true moment for the computation of modulus of rupture equations in this standard use nominal moment depend upon the geometry of the specimen and asfm at failure.