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ASTM D4812-99
Standard Test Method for Unnotched Cantilever Beam Impact Strength of Plastics
Automaticky preložený názov:
Štandardná skúšobná metóda pre Unnotched konzolový nosník dopadov pevnosť plastov
NORMA vydaná dňa 10.3.1999
Informácie o norme:
Označenie normy: ASTM D4812-99
Poznámka: NEPLATNÁ
Dátum vydania normy: 10.3.1999
Kód tovaru: NS-28697
Počet strán: 11
Približná hmotnosť: 33 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Anotácia textu normy ASTM D4812-99 :
Keywords:
Breaking strength/tenacity, Cantilever beam test, Deformation-plast, Excess-energy pendulum-impact test, Flexural shock test, Fracture testing-plast, Friction, Impact testing-plast, Molding/extrusion compounds/materials, Pendulum test, Plast (general), Plast (reinforced thermosetting), Plast (thermoplastic), Resistance-breakage, Sheet materials (general), Shock test, Strength, Vibration test, unnotched cantilever beam impact strength-plast, test
Doplňujúce informácie
| 1. Scope | ||||||||||
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1.1 This test method covers the determination of the resistance to breakage by flexural shock of plastics, as indicated by the energy extracted from standardized (Note 1) pendulum-type hammers, mounted in standardized machines, in breaking standard specimens with one pendulum swing. The result of this test is reported in terms of impact strength per unit of specimen width. Note 1-The machines with their pendulum-type hammers have been standardized in that they must comply with certain requirements, including a fixed height of hammer fall that results in a substantially fixed velocity of the hammer at the moment of impact. Hammers of different initial energies (produced by varying their effective weights) are recommended for use with specimens of different impact strengths. Moreover, manufacturers of the equipment are permitted to use different lengths and constructions of pendulums (with resulting possible differences in pendulum rigidities (see Section 4), and other differences in machine design).1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety problems, 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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