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Standard Test Methods for Creep Relaxation of a Gasket Material
Automatische name übersetzung:
Standard-Prüfverfahren für Kriech-Relaxation eines Dichtungswerkstoff
NORM herausgegeben am 1.3.2014
Bezeichnung normen: ASTM F38-00(2014)
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.3.2014
SKU: NS-55096
Zahl der Seiten: 9
Gewicht ca.: 27 g (0.06 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Filters, seals and contamination of fluidsNon-metalliferous minerals
Keywords:
creep relaxation, deflection, gasket material, platens, relaxometer, strain, stress, temperature, torque bolt, torque loss, ICS Number Code 23.100.60 (Filters, seals and contamination of fluids), 73.080 (Non-metalliferous minerals)
Significance and Use | ||||||||||||
4.1 These test methods are designed to compare related materials under controlled conditions and their ability to maintain a given compressive stress as a function of time. A portion of the torque loss on the bolted flange is a result of creep relaxation. Torque loss can also be caused by elongation of the bolts, distortion of the flanges, and vibration; therefore, the results obtained should be correlated with field results. These test methods may be used as a routine test when agreed upon between the consumer and the producer. 1.1 These test methods provide a
means of measuring the amount of creep relaxation of a gasket
material at a predetermined time after a compressive stress has
been applied.
1.1.1 Test Method A—Creep relaxation measured by means of a calibrated strain gauge on a bolt. 1.1.2 Test Method B—Creep relaxation measured by means of a calibrated bolt with dial indicator. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.3 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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