ASTM D3043 PDFJune 13, 2021
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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It is equally well suited for testing uniform or clear material whenever specimen size is adequate. Referenced Documents purchase separately The documents listed below are referenced within the subject standard c3043 are not provided as part of the standard.
Deflection and modulus of elasticity obtained from this method are related to flexural stress only and do not d0343 a shear component. Comparisons of results of plywood, veneer composites, and laminates with aetm wood or other plywood constructions will be greatly assisted if the thickness of the individual plies is measured to permit computation of section properties. Measured deformation and elastic constants are free of shear deformation effects; and panels can be bent to large deflections without incurring errors from horizontal force components occurring in other methods.
Deflection of mid span relative to two points just inside the load points is measured with a dial gage or transducer thus giving deformation due d304 pure bending and unaffected by shear deformation. ASTM D D determines the flexural properties of strips cut from structural panels or panels up to 4 by 8 ft in size.
Please fill this form, we will try to respond as soon as possible. Method C generally is preferred where size of test material permits. Limitation on size may be imposed by equipment size or moment capacity or size of available material.
NOTE 8—For oriented strand board, the following equation provides loading rates within these guidelines: Measure width at sstm to the nearest 0. Only Method C should be used to test material suspected of having strength or stiffness variations within a panel asm by density variations, knots, knot-holes, areas of distorted grain, fungal attack, or wide growth variations.
Conditioning of test material at controlled atmospheres to control test moisture content and determination of specific gravity are recommended.
Standard Test Methods for Structural Panels in Flexure
When nonuniform material containing density variation, knots, knot-holes, sloping grain or other sources of large variability is tested for general construction and industrial use, a minimum specimen width of 24 in. The input shaft of each rotation gage is fitted with a flange and small V-blocks which rest on the pins projecting from the panel at each gage point, thus transmitting the angular rotation of the panel to the gage and supporting the rotation gage-reference rod assembly.
Locate the pivot point that equalizes the two loads near the original neutral axis of the specimen.
Four methods of tests are included:. 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 d043.
Structural panels in use include plywood, waferboard, oriented strand board, and composites of veneer and of wood-based layers. Choose increments of load so that not less than 12 readings and preferably more than 15 readings are taken prior to the proportional limit. However, Method B may be used to evaluate certain features such as core gaps and veneer joints in plywood panels where effects are readily projected to full panels.
ASTM D – 00 Structural Panels in Flexure – Free Download PDF
Rotational deformation between points near the ends aetm the arc is measured during the test by special sensing gages resting on pins projecting from the face of the panel at these points. It is preferred when equipment is available. Until further innovations are made in pure bending test equipment, use of cable and pulley equipment of this d30443, either purchased or constructed at the laboratory, offers the only practical means of implementing this method.
This standard does not purport to address all of the safety concerns, if any, associated with its use. The test proceeds at a constant rate of loading until either sufficient deflection readings are recorded or until failure occurs, depending upon purpose. It is well suited to investigations of many variables that influence properties uniformly throughout the panel in controlled studies and to test small, defect-free control specimens cut from large panels containing defects tested by the large-specimen method.
Construction of a suitable end support using small roller bearings in conjunction with a plate which clips to the end of the specimen is illustrated in Fig.
These errors are not present in Method C. If the material under test deviates from a plane, laterally adjustable supports shall be provided see Figs. Deflection and modulus of elasticity obtained from this method are related c3043 flexural stress only and do not contain a shear component.
Moisture content c3043 shall be made in accordance with Test Methods D Thank you for interesting in our services.
There are many sizes available and they are usually specified by the customer. Except for effects of nonuniformity of properties within a panel, specimen dimensions do not tend to influence test results.
All methods are applicable to material that is relatively uniform in strength and ast properties. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Modulus of Rupture can also be determined however it is subject to a notable degree of d303 based on the bottom span, loading points, and the total deflection at failure. Link to Active This link will always route to the current Active version of the standard.
Moments applied to fail specimens tested by Method A, B or D in which large deflections occur can be considerably larger than nominal. These pins, threaded at one end and having a small rectangular flange, are attached to the panel either by screwing them into small holes in the face of the panel until the flange is drawn tightly against the face or by inserting the pin through a hole in the panel and drawing the flange tight by means of a nut on the opposite side of the panel.
Also like Method A, this method uses small specimens in a aetm simple span test configuration. ASTM D covers several procedures for testing the flexural properties of structural panels.