Michael H. Santare

Melt processing and mechanical property characterization of multi-walled carbon nanotube/high density polyethylene (MWNT/HDPE) composite films

High density polyethylene (HDPE) was used as the matrix material for a carbon nanotube (CNT) polymer composites. This combination of composite constituents has not been previously reported in the literature. Multi-wall carbon nanotube (MWNT)/HDPE composite films were fabricated using the melt processing method. The composite films with 0, 1, 3 and 5% nanotube content by weight were analyzed under SEM and TEM to observe nanotube dispersion. The mechanical properties of the films were measured by small punch test. Results show increases in the stiffness, peak load and work to failure for the composite films with increasing MWNT content.

Numerical Calculation of Stress Intensity Factors in Functionally Graded Materials

AbstractThe finite element method is studied for its use in cracked and uncracked plates made of functionally graded materials. The material property variation is discretized by assigning different homogeneous elastic properties to each element. Finite Element results are compared to existing analytical results and the effect of mesh size is discussed. Stress intensity factors are calculated for an edge-cracked plate using both the strain energy release rate and the J-contour integral. The contour dependence of J in an inhomogeneous material is discussed. An alternative, contour independent integral

Analysis of a femoral hip prosthesis designed to reduce stress shielding

\tilde J

Experimental investigation of the quasi-static fracture of functionally graded materials

is calculated and it is shown numerically that

Failure properties of suture anchors in the glenoid and the effects of cortical thickness

\tilde J

Comparison of the short beam shear (SBS) and interlaminar shear device (ISD) tests

, the strain energy release rate G, and the limit of J as Γ approaches the crack tip (where Γ is the contour of integration) are all approximately equal. A simple method, using a relatively coarse mesh, is introduced to calculate the stress intensity factors directly from classical J-integrals by obtaining lim#x0393;→ 0 J.