Electrodynamic testing machines
Our equipment for fatigue testing
When establishing INNOPROOF we have chosen electrodynamic testing machines that are on the cutting edge of technology. Due to the electromagnetic drive, the testing machines are operating nearly free of wear and are capable to realize high forces and frequencies.
Our 6 testing machines by TA Instruments/ Electroforce can apply forces up to +/- 7.5 kN with a frequency up to 100 Hz. For the lower force range additional electrodynamic testing machines were purchased from the manufacturer Instron.
Our 14 testing machines manufactured by Instron work with forces up to +/- 3.0 kN.
7 of these machines also have a torsion unit for combined load and motion profiles. With the torsion units up to 25 Nm of torque can be applied.
Read here our case report published on Instron's website:
Electromechanic testing machines
Our equipment for static testing
We are also equipped with two electromechanical testing machines from the manufacturer Zwick. Using these, compression and tension tests may be conducted in the range up to 5 kN or in the range up to 50 kN. At INNOPROOF, these machines are used for static testing of different implant types, e.g.
- rupture testing of breast implants (all sizes)
- tensile strength and shear strength of coatings (ASTM F1044, ASTM F1147)
- pull-off test of conical connections of orthopaedic devices, e.g. ASTM F 2009
For torsional testing, a custom setup was developed.
Mammary implant fatigue testing
INNOPROOF is testing breast implants according to ISO 14607: 2018 Annex C.1 on two 12-station testing machines. Under a static load of 50 N, shear stresses are applied to the implants by means of an electrically driven moving plate over 6,500,000 cycles. The test benches operate with a frequency of 3.3 Hz, as required by the standard.
With our digital microscope from the manufacturer Keyence, we can produce images of the samples with optimum depth of field, e.g. before and after the tests. Depending on the lens selected, magnifications up to 200x or up to 5000x are possible. The 3D depth of field allows the consistently sharp display of arched samples or samples in an oblique view.