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ASTM E1685-00
Standard Practice for Measuring the Change in Length of Fasteners Using the Ultrasonic Pulse-Echo Technique
4 стр.
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Разработчик:
Зарубежные/ASTM
ICS:
21.060.01 Fasteners in general / Крепежные изделия в целом17.040.30 Measuring instruments / Измерительные приборы
Сборник (ASTM):
03.01 Metals -- Mechanical Testing; Elevated and Low-Temperature Tests; Metallography / Металлы - Механические испытания, Испытания при высоких и низких температурах, Металлография
Тематика:
Physical & Mechanical Testing
Описание
Область применения

1.1 This practice covers a procedure for measuring changes in length of threaded fasteners using conventional ultrasonic, pulse-echo bolt-measuring instrumentation which has been properly calibrated.

1.2 This procedure is normally intended for metal bolting 0.25 in. (6.4 mm) or more in nominal diameter with effective length-to-diameter ratios of 2:1 or greater.

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.

Ключевые слова:
bolts; change-in-length measurements; clamping force; fasteners; residual stress; ultrasonics