Mechanical performance analysis strength

Structural/Mechanical Performance Stress Field Description Stress Analysis Results Oxidation Effects on Strength... 

The mechanical performance of the solder joint is determined by the mechanical properties of the materials system—they are the solder, substrate materials, and the interface IMC layer(s)—combined with the joint geometry and the loading rate. Because of these many factors, it is often difficult to quantitatively predict the deformation response of a solder joint without the use of finite element analysis. However, it is possible to establish several generalized, qualitative trends. For example, factors that increase the apparent strength of the joint, which include... 

The mechanical performance is an essential requirement for any biomedical application. Two features must be considered the bulk properties should be compatible with, as much as possible, the host mechanical ones, and a proper interface should transfer load from the scaffold to the native tissue. Values of modulus and tensile/ compressive strength of the materials determine the final mechanical properties of the scaffolds. The analysis of Fig. 5.3 demonstrates the range of tensile modulus and strength values of biological materials (Mano et al., 2004), and that neither polymers alone, nor ceramics/metals by themselves, provide the necessary array of properties. 

Alternatively, NIR spectroscopy has been applied to relate NIR data to mechanical properties [4], A multivariate data analysis was performed on a series of commercial ethene copolymers with 1-butene and 1-octene. For the density correlation, a coefficient of determination better than 99% was obtained, whereas this was 97.7% for the flexural modulus, and only 85% for the tensile strength. 

This limitation is offset by the high efficiencies and rapid analysis times of high-performance SEC. It should be evident that as support pore diameter and pore volume increase, the amount of solid material in the particle will be reduced, compromising the mechanical strength of the support matrix. 

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