ASTM D5487-98(2008)
Standard Test Method for Simulated Drop of Loaded Containers by Shock Machines

Standard No.

ASTM D5487-98(2008)

Release Date

1998

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D5487-16

Latest

ASTM D5487-16(2022)

Scope

Shipping containers and the interior packaging materials are used to protect their contents from the hazards encountered in handling, transportation, and storage. Shock is one of the more troublesome of these hazards. Free-fall drop testing, while easy to perform, often understresses the test specimen by subjecting it to drops which are not perpendicular to the dropping surface.

Note 18212;For example, testing has shown that non-perpendicular drops, 2° off perpendicularity, result in 8 % lower acceleration into the test specimen resulting from the impact energy dispersing in several axes.

Controlled shock input by shock machines provides a convenient method for evaluating the ability of shipping containers, interior packaging materials, and contents to withstand shocks. Simulated free-fall drop testing of package systems, which have critical elements, has produced good results where the frequency of the shock pulse is at least three times that of the package system''s natural frequency.

As in most mechanical shock test procedures, fixturing of the package on the shock test machine may have significant influence on the test results. Typically, packages will be firmly held on the table by securing some type of cross member(s) across the top of the package. Care should be taken that any pressure resulting from such fixturing should be minimal, particularly when the container being tested is corrugated or some other similar material.

In cases where low-acceleration, long-duration responses are anticipated, any fixturing can potentially influence packaged item response and can possibly alter any correlation between this test method and free-fall drop testing. Where such correlation is desired, the package can be tested without it being fixed directly to the table. Note that in such circumstances, the shipping container can vigorously rebound from the table and can, if not otherwise controlled, present a safety problem for operators. Fixing the shipping container to the shock machine table is most often recommended for safety and convenience, but accuracy and precision of this test method should not be compromised by such fixturing.

Note 28212;A rigid package system with a natural frequency above 83 Hz requires a shock pulse shorter than the 2-ms (nominal) duration currently available with many of today''s shock machines:

where:
ds	=	shock pulse duration, s,
fs	=	shock pulse frequency, Hz, and
fp	=	package system frequency, which may be determined by Test Methods D 999.

Similarly, a shock machine using an input shock pulse duration of 3 ms would only be effective with package system frequencies below 56 Hz.

1.1 This test method covers the general procedures of using shock machines to replicate the effects of vertical drops of loaded shipping containers, cylindrical containers, and bags and sacks.

1.2 The values stated in inch-......

ASTM D5487-98(2008) history

• 2022 ASTM D5487-16(2022) Standard Test Method for Simulated Drop of Loaded Containers by Shock Machines
• 2016 ASTM D5487-16 Standard Test Method for Simulated Drop of Loaded Containers by Shock Machines
• 1998 ASTM D5487-98(2008) Standard Test Method for Simulated Drop of Loaded Containers by Shock Machines
• 1998 ASTM D5487-98(2002) Standard Test Method for Simulated Drop of Loaded Containers by Shock Machines
• 1998 ASTM D5487-98 Standard Test Method for Simulated Drop of Loaded Containers by Shock Machines