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als testing must therefore employ a variety of tests in order
to characterize all properties. These tests are described in
international standards (ISO) as well as national and re-
gional standards such as ASTM, EN, and DIN. Automo-
tive manufacturers also have established their own
standards, which set performance criteria for suppliers and
ensure manufacturing quality.
Because robust composites characterization requires
conducting a wide range of tests, manufacturers and sup-
pliers used multiple testing systems with varying test
arrangements. In contrast, Zwick’s Allround-Line system
enables testing of specimens with loads to 100kN and
250kN. The system covers 21 different types of tests, rep-
resenting approximately 115 standards, while a temper-
ature chamber enables testing from -70° to 250°C. Tests
with the new system range from determining interlami-
nar shear strength and fracture toughness to character-
izing static compression.
“This means that some highly complex tests can be per-
formed with the newmachine in addition to the usual tensile,
compression flexure, and shear tests,” says Fahrenholz.
For more information:
Alex Koprivc is automotive industry
manager for Zwick/Roell. Zwick USA, 2125 Barrett Park
Dr., Suite 107, Kennesaw, GA 30144, 770.420.6555,
info@zwickusa.com,
zwickusa.com.
ADVANCED MATERIALS & PROCESSES •
JUNE 2014
25
Fig. 5
—
Zwick’s Allround-Line system supports testing
of aluminum, magnesium, specialized alloys, and
composites. Dual testing areas improve efficiency by
reducing changeover time.