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ASTM D6693/D6693M-04(2015)e1
Standard Test Method for Determining Tensile Properties of Nonreinforced Polyethylene and Nonreinforced Flexible Polypropylene Geomembranes (Includes all amendments And changes 7/17/2020).
Automaticky přeložený název:
Standardní zkušební metoda pro stanovení mechanických vlastností Nonreinforced polyethylenu a Nonreinforced flexibilní polypropylenové geomembrán
NORMA vydána dne 1.5.2015
Informace o normě:
Označení normy: ASTM D6693/D6693M-04(2015)e1
Poznámka: NEPLATNÁ
Datum vydání normy: 1.5.2015
Kód zboží: NS-591373
Počet stran: 5
Přibližná hmotnost: 15 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM D6693/D6693M-04(2015)e1 :
Keywords:
nonreinforced, percent break elongation, percent yield elongation, polyethylene, polypropylene, tensile break strength, tensile yield strength,, ICS Number Code 59.080.70 (Geotextiles)
Doplňující informace
| Significance and Use | ||||||||||||||
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4.1 This test method is designed to produce tensile property data for the control and specification of nonreinforced polyethylene and flexible nonreinforced polypropylene geomembranes. These data are also useful for qualitative characterization and for research and development. It may be necessary to modify this procedure for use in testing certain materials as recommended by the material specifications. Therefore, it is advisable to refer to that material's specification before using this test method. Table 1 in Classification D4000 lists the ASTM materials standards that currently exist. 4.2 Tensile properties may vary with specimen preparation, test speed, and environment of testing. Consequently, where precise comparative results are desired, these factors must be carefully monitored and controlled. 4.2.1 It is realized that a material cannot be tested without also testing the method of preparation of that material. Hence, when comparative tests of materials are desired, the care must be exercised to ensure that all samples are prepared in exactly the same way, unless the test is to include the effects of sample preparation. Similarly, for referee purposes or comparisons within any given series of specimens, care must be taken to secure the maximum degree of uniformity in details of preparation, treatment, and handling. Note 2: Tensile properties may provide useful data for
plastics engineering design purposes. However, because of the high
degree of sensitivity exhibited by many plastics to rate of
straining and environmental conditions, data obtained by this test
method cannot be considered valid for applications involving
load-time scales or environments widely different from those of
this test method. In cases of such dissimilarity, no reliable
estimation of the limit of usefulness can be made for most
plastics. This sensitivity to rate of straining and environment
necessitates testing over a broad load-time scale and range of
environmental conditions if tensile properties are to suffice for
engineering design purposes.
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| 1. Scope | ||||||||||||||
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1.1 This test method covers the determination of the tensile properties of nonreinforced geomembranes in the form of standard dumbbell-shaped test specimens when tested under defined conditions of pretreatment, temperature, and machine speed. 1.2 This test method can be used for testing materials thickness between 0.25 mm [0.010 in.] and 6.3 mm [0.25 in.]. Note 1: This test method is not intended to cover precise
physical procedures. The constant rate of crosshead movement of
this test lacks accuracy from a theoretical standpoint. A wide
difference may exist between the rate of crosshead movement and the
rate of strain of the specimen indicating that the testing speeds
specified may disguise important effects or characteristics of
these materials in the plastic state. Further, it is realized that
variations in the thicknesses of test specimens, as permitted by
this test method, produce variations in the surface-volume ratios
of such specimens, and that these variations may influence the test
results. Hence, where directly comparable results are desired, all
samples should be of equal thickness. Special additional tests
should be used where more precise physical data are
needed.
1.3 Test data obtained by this test method are relevant and may be appropriate for use in engineering design with consideration of test conditions as compared with in-service conditions. 1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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| 2. Referenced Documents | ||||||||||||||
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