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Scope

1.1 This guide describes ultrasonic testing procedures that can be used for evaluating the bond quality of electrical contact assemblies manufactured by brazing or welding.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety and health practices, and determine the applicability of regulatory limitations prior to use.

Significance and Use

This guide is recommended to be used in preparing specifications for the non-destructive evaluation of brazed or welded electrical contact bonded area.⁶ The recommended procedures are meant to improve the reproducibility of test data among various laboratories. Specific differences among equipment models and technician skills do exist which will limit absolute correlation. This guide provides an indication of the degree of variability which has been observed as realistic among industry participants.

Ultrasonic testing alone does not insure an understanding of bonded integrity. Other attributes (that is, strength) may require correlation with destructive test methods.

Keywords

bond evaluation; braze evaluation; C-scan; contact assemblies; electrical contacts; ultrasonic C-scan; unltrasonic testing; Destructive testing--coatings; Nondestructive evaluation (NDE)--nonmetallic materials; Bonding; Brazed electrical contact assemblies; C-scan; Electrical contact materials; Metallographic analysis/inspection; Strength; Transducers; Ultrasonic testing; Welded electrical contact assemblies; Welding/welds

To find similar documents by ASTM Volume:

02.04 (Nonferrous Metals--Nickel, Cobalt, Lead, Tin, Zinc, Cadmium, Precious, Reactive, Refractory Metals and Alloys; Materials for Thermostats, Electrical Heating and Resistance Contacts, and Connectors)

To find similar documents by classification:

25.160.50 (Brazing and soldering Including brazing and soldering alloys and equipment)

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