NDLI: Hysteresis of a biomaterial: Influence of sutures and biological adhesives

Content Provider	Springer Nature Link
Author	García Páez, J. M. Carrera, A. Jorge, E. Millán, I. Cordón, A. Rocha, A. Maestro, M. Castillo Olivares, J. L.
Copyright Year	2007
Abstract	We studied the changes in energy consumption of samples of calf pericardium, when joined or not joined by sutures and adhesives, by means of hysteretic cycles. Sixty-four samples were subsequently subjected to tensile stress until rupture. An overlapping suture sewn in the form of a rectangle presented an acceptable mean resistance to rupture of over 10 MPa, although lower than the mean values in an unsutured control series where the mean resistance surpassed 15 MPa. The contribution of an acrylic adhesive to the resistance to rupture was negligible. The sutured samples that were reinforced with adhesives and had not been subjected to hysteretic cycles prior to rupture showed an anisotropic behavior. This behavior appeared to be lost in all the samples that underwent hysteretic cycles. We found an inflection point in the stress/strain curve following the stepwise increase in the load, with a value greater than and proximate to the final load applied. This inflection should be analyzed by means of microscopy. Finally, the mathematical relationship between the energy consumed and the stress applied, the strain or deformation produced and the number of cycles of hysteresis to which the samples were subjected was established as the ultimate objective of this study. The bonding systems provoked a greater consumption of energy, with the greatest consumption corresponding to the first cycle in all the series assayed. An equation relating the energy consumption in a sample to the number of hysteretic cycles to which it was subjected was obtained. Its asymptote on the x-axis indicates the energy consumption for a theoretical number of cycles, making it possible to estimate the durability of the sample.
Starting Page	715
Ending Page	724
Page Count	10
File Format	PDF
ISSN	09574530
Journal	Journal of Materials Science: Materials in Medicine
Volume Number	18
Issue Number	5
e-ISSN	15734838
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2006-11-30
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Surfaces and Interfaces, Thin Films Ceramics, Glass, Composites, Natural Methods Metallic Materials Polymer Sciences Characterization and Evaluation of Materials Biomaterials
Content Type	Text
Resource Type	Article
Subject	Biomaterials Biophysics Bioengineering Biomedical Engineering

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