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HEADFORMS
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Our entire production process takes place in-house.
We have our own engineers, programmers, designers as well as CNC machines and
operators.
These in-house resources allow us to be extremely competitive and flexible,
whether it is a rush order or a custom design, Cadex gets the job done.
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Consistency
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Reliability
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Durability
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CNC (Computer Numerical Controlled) machines are used throughout our production
process.
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Advantages :
- Very high precision accuracy on the dimension of each surface inside and outside the headforms.
- Machining the headform provides identical results from one order to the next.
- All planes (i.e. references plane, basic plane, transversal plane and longitudinal plane) are machined into the headform to provide technical support to the user.
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Magnesium K1A has been selected by the standards
organization because the material provides the best energy transfer throughout
the headform. Aluminum or steel would either absorb or amplify the energy of
an impact which would modify the results during acquisition tests. Magnesium
K1A is composed of 100% pure Magnesium with an additive of 0.3% to 0.7% of
Zirconium.
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Headforms are mainly used in impact testing,
so over time they become damaged (see figure below) during different test and
especially during the research period. Attempts to make the smallest, thinnest,
lightest, well ventilated helmet takes its toll on a headform.
It is very important to look for any visible signs of damage to a headform.
The result of an impact test on a damaged head form may PASS when in reality it
should have FAILED.
At Cadex, we have a program to refurbish the outer surface of headforms as
well as reconstruct the plane line that may have been lost in the testing
process. The headforms get a complete overall, including a paint job, making
them look as good as new.
Note For Half Head Forms: (Fig. 2)
It is very important to maintain the bolt attachments inside the headform.
These bolts keep the assembly in the correct position, avoiding any potential
vibration that may provide noise in your signal impact acquisition. Only use
5/16NC18 - 1 3/4 bolts to avoid any damage to the thread. If the area around
the screws gets damaged, we can specifically target these areas in our
repairing & recycling program.
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Fig .1
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Fig .2
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Fig .3
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