Characterization of mechanical behavior

Stiffness and compliance of the grafts are evaluated through different moduli (Petterson modulus (Ep) or pressure-deformation modulus (Ep ), incremental elastic modulus (fiNc). pressure-diameter modulus (Epp,)) and distensibility measurements (compliance (%C), stiffness (jS), distensibility (D)) [43 5] (Eqns (15.1-15.6)). 

Apart from stiffness determination, other mechanical characterizations are required to quafify vascular grafts, including suture-retention strength and burst pressure testing. The suture-retention strength test aims at determining the force necessary to pull a 

The burst pressure test characterizes the maximum internal pressnre, the vascnlar graft resists before failnre. The bnrst test is carried ont in the hydrated state nsing a setup similar to that of the pressure-diameter test that allows the system to achieve pressures higher than the physiological range ( 2000 mm Hg). 

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I. Characterization of mechanical behavior of powder and powder/tooling friction,... 

Cunningham JC, Sinka IC, Zavaliangos A. Analysis of tablet compaction. I. Characterization of mechanical behavior of powder and powder/tooling friction. J Pharm Sci 2004 93 2022-2039. 

To determine the strength and endurance of a material under stress, it is necessary to characterize its mechanical behavior. Moduli, strain. 

Jim Jimeno, A., Kortaberria, G., Larranaga, M., Gabilondo, N., Mondragon, I. Morphological characterization and mechanical behavior of poly (styrene-co-arylonitrile)-modified epoxy matrices. High Performance Polym. 16 (2004) 557-568. 

Kurtz S.M., J.R. Foulds, C.W. Jewett, et al. 1997. Validation of a small punch testing technique to characterize the mechanical behavior of ultra-high molecular weight polyethylene. Biomaterials 18 1659-1663. 

Luo, J.-J. and Daniel, I. M. Characterization and modeling of mechanical behavior of polymer/clay nanocomposites. Composites Science and Technology 2003 63 1607-16. 

A. Boynard and J.R.M. d Almeida, Morphological characterization and mechanical behavior of sponge gourd (Luffa cyhndrica)-polyester composite materials. Polym. Plast. Technol. Eng. 39,489-499 (2000). 

As in failures analysis this process consists of two main steps (i) inference of reliability quantities that explain the stochastic mechanism that originate the accident/recovery process such as accidents and recovery rates and (ii) characterization of accidental behavior by applying stochastic process analysis methods (e.g. Markov process). 

The brittle fracture of olefin polymers appears under load on a very short timescale. Brittle fracture time characterizes the mechanical behavior of a polymer, as brittleness temperature also does. 

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