Segmenting micro-Computed Tomography (µCT) images of textile composites is a necessary step before modeling the material at mesoscale. However, accurate segmentation fiber bundles (or tows) remains challenge in carbon reinforced composites. Segmentation approaches based on local orientation perform well recognizing individual tows only under ideal conditions, namely when bordering two tows’ int...

In this study, an in-house finite element approach is developed to optimize fundamental frequency of variable stiffness composites considering manufacturing constraints tow steering process. The method uses the lamination parameters as design variables. Tow angles or fiber and their stacking sequence are computed from optimum by direct search method. Least-Squares Continuity (LSC) applied maint...

The only barrie r to a sm ooth move of g raduate women to the Notre Dame T ow nhouses and un­ d erg radua te women back into Badin is late com pletion of the tow n­ houses. Sr. John M iriam Jones, assistan t to the Provost, said everything is based on the tow n­ houses being done in tim e. Jones sa id ,“ The initial com ple­ tion date was Ju n e 1, so women could move in for the sum m er sessio...

after islamic revolution of 1979, the left wing had a new sphere to act in political eras, and overcastted on the other groups, but as soon as possible, the unreligious left leaved the political scene of iran after revolution. it seems the religious groups –as the only legal political actors- are integrated under “islamic republic party” but so soon, we saw the distinction between them all. jus...

Variable-angle-tow (VAT) composite laminates can eventually improve the mechanical performance of lightweight structures by taking advantage a larger design space compared to straight-fiber counterparts. Here, we provide scalable low- high-fidelity methodology retrieve tow angles that maximize buckling load and fundamental frequency VAT plates. A genetic algorithm is used solve optimization pro...

In order to grow, tumors need to induce supportive alterations in the tumor-bearing organ, by us named tumor instructed normal tissue (TINT) changes. We now examined if the nature and magnitude of these responses were related to tumor size and aggressiveness. Three different Dunning rat prostate tumor cells were implanted into the prostate of immune-competent rats; 1) fast growing and metastati...

Existing Through-Thickness Reinforcement (TTR) methods for laminated composites using semi or fully rigid reinforcing elements, like tufting, stitching, and z-pinning, present limitations on element geometry, strength, stiffness. Where these application envelopes are exceeded, TTR insertion results in unacceptable levels of damage to both the composite and/or elements. Here, we demonstrate that...

the occurrence of chatter vibrations in boring operation has a great influence in improving workpiece dimensional accuracy, surface quality and production efficiency. in this paper instability analysis of machining process is presented by dynamic model of boring machine. this model, which consists of machine tool’s structure, is provided by finite element method and ansys software. the model is...