ASTM E2533 Outlines Nondestructive Testing for Aerospace Composites
November 3, 2009 // Published as a news service by IHS
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ASTM International Committee E07 on Nondestructive Testing (NDT) developed a series of standards on nondestructive inspection and examination of aerospace composites.
ASTM E2533 - Guide for Nondestructive Testing of Polymer Matrix Composites Used in Aerospace Applications.
This guide helps engineers select appropriate nondestructive testing methods to examine and characterize aerospace composites.
In addition to ASTM E2533, several standard practices were developed and published to document and establish control requirements of current established industry practices so that these standards can be specified in contracts.
One such practice is ASTM E2662 - Practice for Radiologic Examination of Flat Panel Composites and Sandwich Core Materials used in Aerospace Applications.
ASTM E2662 was developed under the guidance of task group member John Ellegood and under the jurisdiction of Subcommittee E07.01 on Radiology (X and Gamma) Method.
ASTM E2662 provides process control requirements for film and digital radiography of aerospace composite panels.
"Using ASTM E2662 will improve accuracy and reliability of radiographic examinations for these low density structures," said Ellegood, a staff quality engineer and level 3 radiographer. "Often, examinations are not performed at optimal levels due to inadequate experience and lack of requirements."
Ellegood, who also serves on the Leadership Committee of the Federal Working Group on Industrial Digital Radiography, said that NASA, the U.S. Department of Defense (DOD) and manufacturers of aerospace and aircraft structures using lightweight composite panels will be the primary users of ASTM E2662.
Three additional practices developed under the guidance of the task group and published earlier are:
Several years ago, with input from representatives of NASA, a task group on nondestructive examination (NDE) for Aerospace Composites was formed under Subcommittee E07.10 on Emerging NDT Methods.
The task group was established to foster the development of standards for NDE of aerospace composites and is developing proposed guides and practices for the inspection/examination of more complex composite components, such as composite overwrapped pressure vessels.
Source: ASTM International.