PRESSURE BURST TESTING
increasing demand for hydroformed components, companies
who wish to accelerate within this industry need to
pursue technological advancements to satisfy research and
development, quick design iterations and even quality
audit (lot sampling).
The capabilities inherent today to satisfy this analysis
are typically via finite element techniques (FEA) and
tensile testing. Costs and timing, usually on the
high end, are not always indicative of the
characteristics or can be easily monitored or evaluated.
An effective approach in analyzing stress and strain real-time
is high-pressure burst testing. With data
collection retrievable, we can now achieve calculations
for: "k" values, "n" values, region
of material instability, burst pressure and ultimate
The AIRMO hydroforming high-pressure burst test system
available on the market today, provides simple, safe and
efficient hydrostatic testing and bursting of tubes.
The burst bench enclosed in a chamber is connected with a
pump control system with high pressure hoses attached to
quick disconnect couplers. The burst bench/chamber is
equipped with a slide-rail system for the hydrotest heads,
which allows for quick attachment to the test tube. The
system allows the ability to pre-fill a tube very quickly,
resulting in very short cycle time from connection to
AIRMO hydrotest heads are designed for a broad variety of
diameters, 3/4" to 6"OD and pressures to 20,000
psi. Higher pressures are available upon request.
The circular sensor array transmits dimensional changes,
via high-speed data acquisition to the PC: sensor
distance readings, systems pressure and time. Up to
sixteen sensors are available based on the tube's range.
The precision level from a diameter measurement is +/-.003".
With the ease of use in the test cycle, the operator
requirements are to place the tube in the burst chamber,
select maximum pressure and rate of expansion, start the
test and finally remove when the test is complete. A two-minute
cycle is normal.
An effort by hydroforming burst test users is to see this
test practice as an industry standard.
& ASSOCIATES, INC.
P.O. Box 46099
Mt. Clemens, Michigan 48046-6099
|phone: +1 (810)
contact: Dennis A. Sikowski
rights are reserved.