استاندارد ASTM B548

در خصوص بازرسی ورق های آلیاژهای آلمینیومی ظروف تحت فشار به روش آلتراسونیک

به زبان انگلیسی

Standard Test Method for
Ultrasonic Inspection of Aluminum-Alloy Plate for Pressure
Vessels

Scope
1.1 This test method covers pulse-echo ultrasonic inspection
of aluminum-alloy plate of thickness equal to or greater than
0.500 in. (12.7 mm) for use in the fabrication of pressure
vessels. The ultrasonic test is employed to detect gross internal
discontinuities oriented in a direction parallel to the rolled
surface such as cracks, ruptures, and laminations, and to
provide assurance that only plate that is free from rejectable
discontinuities is accepted for delivery.
1.2 The inspection method and acceptance criteria included
in this standard shall be limited to plate of the following
aluminum alloys: 1060, 1100, 3003, Alclad 3003, 3004, Alclad
3004, 5050, 5052, 5083, 5086, 5154, 5254, 5454, 5456, 5652,
6061, and Alclad 6061.
1.3 This test method applies only to ultrasonic tests using
pulsed longitudinal waves which are transmitted and received
by a search unit containing either a single crystal or a
combination of electrically interconnected multiple crystals.
Ultrasonic tests employing either the through-transmission or
the angle-beam techniques are not included.
1.4 This test method shall be used when ultrasonic inspection as prescribed herein is required by the contract, purchase
order, or referenced plate specification.
1.5 The values stated in inch-pound units are to be regarded
as the standard. The values given in parentheses are for
information only.
1.6 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.