BIO TRIBOLOGY
?Study of wear, friction and lubrication in relation to biological applications
?Includes bio-chemical and mechanical aspects in evaluation of properties
?Typically sliding abrasive wear phenomenon
?Typically submerged / wet tribological scenarios
?Gaining importance of materials for:
Safety
Patient health and safety, legal implications, …
Cost effectiveness
Better processes for cheaper materials, affordable end product, …
Longer life of components
Longer service life, increased convenience, …
?Increasing demand of better materials from Industry
?New materials Synthesis by Alloying, Mixing, Compositing and Surface Modification for friction and wear property modulation.
?New component designs Meet stringent demands on implant materials and their surfaces for optimum performance and long life.
?Limiting conditions Identification of limiting conditions to obtain best performance for wear and friction optimization.
APPLICATIONS
?Common implants include orthopedic devices such as:
total knee and hip joint replacements
spinal implants
bone fixators
cardiac implants such as artificial heart valves and pacemakers
?Material choices also must take into account:
biocompatibility with surrounding tissues
the environment and corrosion issues
friction and wear of the articulating surfaces
TYPICAL APPLICATION AREAS OF BIO TRIBOLOGY
?Development of bio compatible materials
Bone fixators
Materials for other general applications
?Evaluation of dental properties
Enamel
Dental implants
Brushing
Charecterization of visco elastic behavior of saliva, etc…
?Contact lens evaluation
Friction, lubricity
Dryness
3 body abrasion etc…
?Development of prosthetics
fatigue life determination
performance limits
optimum conditions for use, etc…
?Skin lotions
skin smoothness related to lower COF
material transfer in lipsticks, etc…
?Hair care
low friction for untangled hair
smooth and soft hair needs low friction, etc…
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