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2. TRANSVERSE TENSILE STRENGTH PREDICTION OF THERMOSETTING COMPOSITES

   https://doi.org/10.12783/asc37/36483  

   SHAH, SAGAR P.; MAIARU, MARIANNA (September 2022, Destech Publications, Inc.)

   The transverse tensile strength of composites is susceptible to size effects. Therefore, it is paramount to develop length-scale specific physical test procedures to validate computational models that estimate the transverse composite response using micromechanics. To this end, a computational process modeling and virtual mechanical testing framework are presented in this study to predict the transverse response of composite microstructures subjected to processing conditions. Informed by a comprehensive material dataset, the numerical model is shown to reliably predict the process-induced residual stress generation in composite microstructures and accurately evaluate its influence on their transverse strength prediction. A novel procedure to fabricate thin composite laminates from a single ply of carbon fibers and characterize their transverse tensile response is presented to validate the numerical model. The results show excellent agreement with the virtual test predictions. This study highlights the importance of length-scale specific testing to minimize the influence of size effect on the transverse composite strength. 

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3. Gradient nanostructured steel with superior tensile plasticity

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4. Tensile force-induced cytoskeletal remodeling: Mechanics before chemistry

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   Li, Xiaona; Ni, Qin; He, Xiuxiu; Kong, Jun; Lim, Soon-Mi; Papoian, Garegin A.; Trzeciakowski, Jerome P.; Trache, Andreea; Jiang, Yi; Saucerman, Jeffrey J. (June 2020, PLOS Computational Biology)
5. Tensile ductility and necking in consolidated amorphous alumina

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   Zhang, Yanming; Liu, Haidong; Sundararaman, Siddharth; Huang, Liping; Shi, Yunfeng (September 2021, Journal of the American Ceramic Society)

   Abstract Oxide glass, one of the most transformative materials in the modern world, breaks easily under load due to its brittleness. Using classical molecular dynamics simulations, we prepared amorphous alumina by consolidating glass nanoparticles at room temperature. We showed that consolidated amorphous alumina exhibits work hardening ability, hence deforms homogeneously and fractures via necking under tension, while amorphous alumina obtained from the traditional melt‐quench process fractures catastrophically due to severe shear banding. This finding suggests that if processed properly, amorphous oxides could deform and fracture like ductile metals, which will significantly expand the applications of oxide glasses into new areas where load bearing or mechanical reliability is necessary. 

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