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Testing of Materials & Coatings

We help our clients gain regulatory approval for materials and coatings

We offer a broad range of axial and torsional static, dynamic, computational, and wear testing services for orthopaedic materials and products. All of our test procedures follow international test standards as described below.

Our engineering team is active in ASTM and ISO arthroplasty standards committees to ensure the latest industry best-practices are applied to your test. If a non-standard test is needed, our engineering team will develop and incorporate modifications to suit your specific device and data needs.

Having a strong foundation in clinical research provides you with the additional value of a clinically-relevant test procedure. We pride ourselves on the ability to meet a customer’s specific needs with a wholly unique, tailored solution.

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Tensile Properties of Plastics
Describes a method for testing tensile properties of standard dumbbell-shaped specimens under defined conditions for pre-treatment, temperature, humidity and testing machine speed. Five samples of isotropic materials are tested or ten samples of anisotropic materials (five normal to, and five parallel with, the principle axis of anisotropy).
Wear Testing of Polymeric Materials
Describes methodology for wear testing of various materials using OIC’s AMTI OrthoPOD. Pin rotation, disc rotation, and dynamic pin loading are all independently controlled. Track patterns and loads can be customized and are fully programmable, ensuring an accurate representation of the cross-shear motion experienced by prostheses in vivo. Testing can be performed dry or in various lubricants. POD testing can be used for screening candidate biomaterial couples and for optimizing design performance prior to cost-intensive joint simulator wear tests.
Shear Strength of Coatings
Describes methodology for assessing adhesive and cohesive strength of coatings determined via shear tests. Bending fatigue tests can also be performed to provide further information, such a cracking resistance, adhesion, and the relationship between the coating and substrate.
Tensile Strength of Coatings
Evaluates the adhesion and cohesion of coatings to specific materials. Testing is performed by applying tensional loads to both coated and uncoated metal substrates. The internal cohesion of the coatings normal to the surface of samples may also be determined during this test.
Accelerated Aging of UHMWPE (Ultra-high-molecular-weight polyethylene)
Accelerated aging evaluates the material’s chemical and mechanical stability in an extended shelf-aged condition. Components are aged in a temperature and pressure regulated oxygen chamber to verify experimental conditions are within tolerance during aging. Two individually regulated pressure tanks are available for use at OIC. Accelerated aging may be applied prior to wear testing, pin-on-disc testing, or mechanical testing.
Bone Cement Fatigue Test

Similar to ISO 16402, this test method describes a variety of tests for evaluating the static and fatigue strength of acrylic resin-based bone cement. Constant amplitude, uniaxial, and tension-compression tests are performed to generate an S-N curve using dumbbell-shaped samples.

Strength Testing of Tissue Adhesives
Three standard test methods for measuring the adhesive performance of tissue adhesives intended for surgical application with soft tissue are described. Including, strength properties of tissue adhesives in T-peel by tension loading (ASTM F2256) and in tension (F2258), and wound closure strength of tissue adhesives and sealants (F2458).
Bone Cement Fatigue Test

Similar to ASTM F2118, this test method describes a variety of tests for evaluating the static and fatigue strength of acrylic resin-based bone cement. Constant amplitude, uniaxial, and tension-compression tests are performed to generate an S-N curve using dumbbell-shaped samples.

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