2c shows a large-sized concrete model generated by stacking 8 copies of a single concrete block, exploiting periodicity of the mesostructure. These are assembled into the mortar matrix using a hierarchical random sequential adsorption algorithm taking the aggregate size distribution as input (Fig. The coarse aggregates are modeled as polyhedrons with multiple faces, various aspect ratios and concave depressions (Fig. The algorithm can generate ultra realistic concrete mesostructures, given an aggregate size distribution. To simulate realistic fracture processes in concrete, a virtual concrete micro- and mesostructure generator to simulate distributed microcracking using a multiscale micromechanics model has been developed. Generation of realistic virtual concrete specimens Finally, the capability of the model-based framework for the identification of damage will be validated by application to the demonstrator projects. The third major area of focus is the transfer of coda-characteristics (damage-class and loading-type identifiers) derived at the material scale and specimen scale to the structural scale. Second, the material scale damage classifier will be extended and enhanced with additional attributes to filter environmental and boundary effects. In the second phase of the project, first the reduced-order multiscale model for damage simulation will be extended to consider environmental loads such as temperature and moisture. Synthetic coda waves obtained from sampling the virtual concrete specimens were used to train a classifier and to identify specific stages of microstructural changes such as reversible deformation, distributed microcracking and localized macrocracks. In the first phase of the project, RUB1 developed a tool to generate realistic concrete microstructures and a multiscale reduced-order model for simulating concrete damage. Within the framework of this Research Group FOR 2825, the objective of Subproject RUB1 is to establish a model-based characterization of the degradation of concrete at multiple scales and to enable a classification of the level of damage using simulated and measured coda data. However, the state of the coda wave technology for the assessment of the structural integrity of concrete structures is at its early stages. Detecting such precursor damage in concrete and reinforced concrete structures can serve as an early warning system to take precautionary retrofitting measures to avoid expenses for extensive rehabilitation of engineering infrastructure. 55 No.1 by Frédéric Chopin.The high sensitivity of the coda waves to weak microstructural changes in concrete opens the perspective to identify early-stage damage events that precede macrocracking and severe failure of concrete structures. The song is based on the classical piece Nocturne Op. A slower arrangement plays over part of the flashback of Evil Morty's origin in " Unmortricken". It is featured at the end of the episodes " Close Rick-counters of the Rick Kind," played while Evil Morty destroys his eye-patch transmitter, and " The Ricklantis Mixup" played after Evil Morty is revealed to be the new president of The Citadel.īlonde Redhead later created a remixed version for Rick and Morty called More Coda, which plays during " Rickmurai Jack" when Evil Morty breaks open the Central Finite Curve and escapes into the rest of the multiverse. " For the Damaged Coda" is a song by Blonde Redhead, used as the unofficial theme song for Evil Morty. " Fathers and Daughters (Doo-Doo in My Butt)"
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