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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In some cases closer spacing may be entirely satisfactory. We offer machines, apparatus, testers, tensile grips, test fixtures, clamps, holders, jigs, faces, jaws, extensometers, environmental and humidity chambers, furnaces, baths and custom solutions for unique applications. It should be noted that the span is based on the nominal thickness of the material and it is not intended that the spans be changed for small variations in thickness.
ast Specimen size and span above certain minimums are quite flexible. The modulus of elasticity is also referred to as the flexural modulus. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Other comments as well as those of 5. This test method covers the flexural properties of strength and stiffness. One-eighth-inch three-millimetre pins project perpendicularly from the face of the panel held in a vertical position by the loading frames.
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.
These errors are not present in Method C. We need your help! Total deflection, and modulus of elasticity computed from it, include a relatively constant component attributable to shear deformation. These errors are not present in Method C.
Standard Test Methods for Structural Panels in Flexure
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. There are many sizes available and they are usually specified by the customer. This method uses a span to depth ratio, specimen width, test fixture and test speed that make the method well suited for quality assurance.
Method C is a Pure Moment Test also known as a two point bend test. The characteristically astmm failures of large panels will normally dictate removel of delicate measuring instruments from the panel when sufficient data in the elastic range has been obtained.
ASTM D – 00() Standard Test Methods for Structural Panels in Flexure
For a discussion dd3043 these errors, their effects, and methods for reducing them, refer to Appendix X1. Specimen size and span above certain minimums are quite flexible. The use of a large ball bearing to provide lateral compensation for warp is also illustrated.
Active view current version of standard. Support axes of the loading frames to remain in a parallel relationship throughout the test Note 4. Use of linear differential transformers as transducers permits primaries and secondaries to be wired to produce a single signal proportional to their sum for indication or recording.
These d303 can include plywood, particle board, strand board, veneer composites, and other wood type materials. The width shall be at least 3 in.
Link to Active This link will always route to the current Active version of the standard. By means of our testing expertise and modular product design, we will help find the solution that is right for astn.
The supports shall be such that no appreciable crushing of the specimen will occur at these points during the test. Measure width to the nearest 0. Also like Method A, this method uses small specimens in a center-point simple span test configuration. Take deflection readings to the nearest 0. Measured deformation axtm elastic constants are free of shear deformation effects; and panels can be bent to large deflections without incurring errors from horizontal force components asm in other methods.
The method is frequently used for quality assurance testing of oriented strand board. Several factors including moisture content and specific gravity can affect the calculations.
A dial gage could replace the transducer for manual reading.
NOTE 7—A test rate to achieve the average failure load for the sample in approximately 1 min will differ from that to achieve a lower percentile load for the same sample in approximately 1 min.
D load points plus 48 times specimen thickness or 24 times specimen thickness for asmt principal direction parallel or perpendicular respectively.