Standard: ASTM E1736
STANDARD PRACTICE FOR ACOUSTO-ULTRASONIC ASSESSMENT OF FILAMENT-WOUND PRESSURE VESSELS
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This practice covers a procedure for acousto-ultrasonic (AU) assessment of filament-wound pressure vessels. Guidelines are given for the detection of defect states and flaw populations that arise during materials processing or manufacturing or upon exposure to aggressive service environments. Although this practice describes an automated scanning mode, similar results can be obtained with a manual scanning mode.
This procedure recommends technical details and rules for the reliable and reproducible AU detection of defect states and flaw populations. The AU procedure described herein can be a basis for assessing the serviceability of filament-wound pressure vessels.
The objective of the AU method is primarily the assessment of defect states and diffuse flaw populations that influence the mechanical strength and ultimate reliability of filament-wound pressure vessels. The AU approach and probe configuration are designed specifically to determine composite properties in lateral rather than through-the-thickness directions. 2
The AU method is not for flaw detection in the conventional sense. The AU method is most useful for materials characterization, as explained in Guide E1495, which gives the rationale and basic technology for the AU method. Flaws and discontinuities such as large voids, disbonds, or extended lack of contact of interfaces can be found by other nondestructive examination (NDE) methods such as immersion pulse-echo ultrasonics.
Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this practice.
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.
2 Vary, A., "Acousto-Ultrasonics," Nondestructive Testing of Fibre-Reinforced Plastics Composites, Vol 2, J. Summerscales, ed., Elsevier Science Publishers Ltd., Barking, Essex, England, 1990, Chapter 1, pp. 1-54.
*A Summary of Changes section appears at the end of this standard
|Document Number:||astm e1736|
|Change Type:||COMPLETE REVISION|
|Most Recent Revision:||YES|
|Document #||Change Type||Update Date||Revision||Status|
|ASTM E1736||Change Type: STCH||Update Date: 2010-06-01||Revision: 10||Status: INAC|
|ASTM E1736||Change Type:||Update Date: 2005-06-01||Revision: 05||Status: INAC|
|ASTM E1736||Change Type:||Update Date: 2000-12-10||Revision: 00||Status: INAC|
|ASTM E1736||Change Type:||Update Date: 1995-09-10||Revision: 95||Status: INAC|
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