ASTM-E1495:2012 Edition

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E1495/E1495M-12 Standard Guide for Acousto-Ultrasonic Assessment of Composites, Laminates, and Bonded Joints

Published By	Publication Date	Number of Pages
ASTM	2012	9

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Description

ASTM E1495/E1495M-12

Historical Standard: Standard Guide for Acousto-Ultrasonic Assessment of Composites, Laminates, and Bonded Joints

ASTM E1495/E1495M

Scope

1.1 This guide explains the rationale and basic technology for the acousto-ultrasonic (AU) method. Guidelines are given for nondestructive evaluation (NDE) of flaws and physical characteristics that influence the mechanical properties and relative strength of composite structures (for example, filament-wound pressure vessels), adhesive bonds (for example, joints between metal plates), and interlaminar and fiber/matrix bonds in man-made composites and natural composites (for example, wood products).

1.2 This guide covers technical details and rules that must be observed to ensure reliable and reproducible quantitative AU assessments of laminates, composites, and bonded structures. The underlying principles, prototype apparatus, instrumentation, standardization, examination methods, and data analysis for such assessments are covered. Limitations of the AU method and guidelines for taking advantage of its capabilities are cited.

1.3 The objective of AU is to assess subtle flaws and associated strength variations in composite structures and bonded joints. Discontinuities such as large voids, disbonds, or extended lack of contact at interfaces can be assessed by other NDE methods such as conventional ultrasonics.

1.4 Additional information may be found in the publications cited in the list of references at the end of this guide. The referenced works provide background on research, applications, and various aspects of signal acquisition, processing, and interpretation.

1.5 Units—The values stated in either SI units or inch-pound units are to be regarded as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standards.

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.

Keywords

acoustic emission; acousto-ultrasonics; bonded joints; composites; laminates; materials characterization; mechanical properties assessment; nondestructive evaluation; nondestructive testing; stress wave factor; ultrasonic attenuation

ICS Code

ICS Number Code 19.100 (Non-destructive testing)

DOI: 10.1520/E1495_E1495M-12

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Guide Significance and Use Basis of Application
3	Limitations Standardization System Configuration FIG. 1
4	FIG. 2
6	Signal Characteristics Signal Quantification FIG. 3
7	FIG. 4
8	Interpretation of Results Keywords REFERENCES FIG. 5

Additional information

Standard Title	E1495/E1495M-12 Standard Guide for Acousto-Ultrasonic Assessment of Composites, Laminates, and Bonded Joints
Published Code	ASTM
Publication Date	2012
Pages Count	9