|Description / Abstract
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|This part of IEC 60068 provides a standard procedure for
determining the ability of a specimen to withstand specified
severities of non-repetitive or repetitive shocks.
The purpose of this test is to reveal mechanical weakness and/or
degradation in specified performances, or accumulated damage or
degradation caused by shocks. In conjunction with the relevant
specification, this may be used in some cases to determine the
structural integrity of specimens or as a means of quality
This test is primarily intended for unpackaged specimens and for
items in their transport case when the latter may be considered to
be part of the specimen. If an item is to be tested unpackaged, it
is referred to as a test specimen. However, if the item is
packaged, then the item itself is referred to as a product and the
item and its packaging together are referred to as a test specimen.
When used in conjunction with IEC 60068-2-47, this standard may be
used for testing packaged products. This possibility was included
in the 2005 version of IEC 60068-2-47 for the first time.
This standard is written in terms of prescribed pulse shapes.
Guidance for the selection and application of these pulses is given
in Annex A and the characteristics of the different pulse shapes
are discussed in Annex B.
Wherever possible, the test severity and the shape of the shock
pulse applied to the specimen should be such as to reproduce the
effects of the actual transport or operational environment to which
the specimen will be subjected, or to satisfy the design
requirements if the object of the test is to assess structural
For the purposes of this test, the specimen is always mounted to
the fixture or the table of the shock testing machine during
NOTE The term "shock testing machine" is used throughout this
standard, but other means of applying pulse shapes are not
One of the responsibilities of a technical committee is,
wherever applicable, to make use of basic safety publications in
the preparation of its publications.
|Additional Supplemental Documents