Search Results - "RITCHIE, R. O"

Mo-Si-B Alloys for Ultrahigh-Temperature Structural Applications by Lemberg, J. A., Ritchie, R. O.

“…A continuing quest in science is the development of materials capable of operating structurally at ever‐increasing temperatures. Indeed, the development of…”
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The true toughness of human cortical bone measured with realistically short cracks by Ritchie, R. O, Koester, K. J, Ager, J. W

“…Bone is more difficult to break than to split. Although this is well known, and many studies exist on the behaviour of long cracks in bone, there is a need for…”
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Tough, Bio-Inspired Hybrid Materials by Munch, E, Launey, M.E, Alsem, D.H, Saiz, E, Tomsia, A.P, Ritchie, R.O

“…The notion of mimicking natural structures in the synthesis of new structural materials has generated enormous interest but has yielded few practical advances…”
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Elastic strain-induced amorphization in high-entropy alloys by Bu, Yeqiang, Wu, Yuan, Lei, Zhifeng, Yuan, Xiaoyuan, Liu, Leqing, Wang, Peng, Liu, Xiongjun, Wu, Honghui, Liu, Jiabin, Wang, Hongtao, Ritchie, R. O., Lu, Zhaoping, Yang, Wei

“…Elastic stability is the basis for understanding structural responses to external stimuli in crystalline solids, including melting, incipient plasticity and…”
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Grain-boundary engineering markedly reduces susceptibility to intergranular hydrogen embrittlement in metallic materials by Bechtle, S., Kumar, M., Somerday, B.P., Launey, M.E., Ritchie, R.O.

“…The feasibility of using “grain-boundary engineering” techniques to reduce the susceptibility of a metallic material to intergranular embrittlement in the…”
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The dentin-enamel junction and the fracture of human teeth by Imbeni, V, Marshall, G. W, Marshall, S. J, Ritchie, R. O, Kruzic, J. J

“…The dentin-enamel junction (DEJ), which is the interfacial region between the dentin and outer enamel coating in teeth, is known for its unique biomechanical…”
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Measurement of the toughness of bone: A tutorial with special reference to small animal studies by Ritchie, R.O, Koester, K.J, Ionova, S, Yao, W, Lane, N.E, Ager, J.W

“…Abstract Quantitative assessment of the strength and toughness of bone has become an integral part of many biological and bioengineering studies on the…”
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Electrically reversible cracks in an intermetallic film controlled by an electric field by Liu, Z. Q., Liu, J. H., Biegalski, M. D., Hu, J.-M., Shang, S. L., Ji, Y., Wang, J. M., Hsu, S. L., Wong, A. T., Cordill, M. J., Gludovatz, B., Marker, C., Yan, H., Feng, Z. X., You, L., Lin, M. W., Ward, T. Z., Liu, Z. K., Jiang, C. B., Chen, L. Q., Ritchie, R. O., Christen, H. M., Ramesh, R.

“…Cracks in solid-state materials are typically irreversible. Here we report electrically reversible opening and closing of nanoscale cracks in an intermetallic…”
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Direct mechanical measurement of the tensile strength and elastic modulus of multiwalled carbon nanotubes by Demczyk, B.G, Wang, Y.M, Cumings, J, Hetman, M, Han, W, Zettl, A, Ritchie, R.O

“…We have conducted pulling and bending tests on individual carbon nanotubes in-situ in a transition electron microscope. Based on our observation of the force…”
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Sclerostin-antibody treatment of glucocorticoid-induced osteoporosis maintained bone mass and strength by Yao, W., Dai, W., Jiang, L., Lay, E. Y.-A., Zhong, Z., Ritchie, R. O., Li, X., Ke, H., Lane, N. E.

“…Summary This study was to determine if antibody against sclerostin (Scl-Ab) could prevent glucocorticoid (GC)-induced osteoporosis in mice. We found that…”
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Evolution of crack-tip transformation zones in superelastic Nitinol subjected to in situ fatigue: A fracture mechanics and synchrotron X-ray microdiffraction analysis by Robertson, S.W., Mehta, A., Pelton, A.R., Ritchie, R.O.

“…The ultrahigh spatial resolution (∼1 μm 2) of synchrotron X-ray microdiffraction is combined with fracture mechanics techniques to directly measure in situ…”
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Mechanisms of fatigue-crack propagation in ductile and brittle solids by RITCHIE, R. O

“…The mechanisms of fatigue-crack propagation are examined with particular emphasis on the similarities and differences between cyclic crack growth in ductile…”
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Carbon nanotubes as nanoscale mass conveyors by Zettl, A, Regan, B. C, Aloni, S, Ritchie, R. O, Dahmen, U

“…The development of manipulation tools that are not too 'fat' or too 'sticky' for atomic scale assembly is an important challenge facing nanotechnology…”
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On the influence of mechanical surface treatments—deep rolling and laser shock peening—on the fatigue behavior of Ti–6Al–4V at ambient and elevated temperatures by Nalla, R.K, Altenberger, I, Noster, U, Liu, G.Y, Scholtes, B, Ritchie, R.O

“…It is well known that mechanical surface treatments, such as deep rolling, shot peening and laser shock peening, can significantly improve the fatigue behavior…”
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Interface Structure and Atomic Bonding Characteristics in Silicon Nitride Ceramics by Ziegler, A., Idrobo, J. C., Cinibulk, M. K., Kisielowski, C., Browning, N. D., Ritchie, R. O.

“…Direct atomic resolution images have been obtained that illustrate how a range of rare-earth atoms bond to the interface between the intergranular phase and…”
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Changes in cortical bone response to high-fat diet from adolescence to adulthood in mice by Ionova-Martin, S. S., Wade, J. M., Tang, S., Shahnazari, M., Ager, J. W., Lane, N. E., Yao, W., Alliston, T., Vaisse, C., Ritchie, R. O.

“…Summary Diabetic obesity is associated with increased fracture risk in adults and adolescents. We find in both adolescent and adult mice dramatically inferior…”
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High-cycle fatigue of nickel-base superalloy René 104 (ME3): Interaction of microstructurally small cracks with grain boundaries of known character by Gao, Yong, Stölken, J.S., Kumar, Mukul, Ritchie, R.O.

“…High-cycle fatigue (HCF), involving the premature initiation and/or rapid propagation of small cracks to failure due to high-frequency cyclic loading, has been…”
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The Utility of R-Curves for Understanding Fracture Toughness-Strength Relations in Bridging Ceramics by Kruzic, J. J., Satet, R. L., Hoffmann, M. J., Cannon, R. M., Ritchie, R. O.

“…The mechanical behavior of four rare earth (RE)‐Mg‐doped Si3N4 ceramics (RE=La, Lu, Y, Yb) with varying grain‐boundary adhesion has been examined with emphasis…”
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Effect of aging on the toughness of human cortical bone: evaluation by R-curves by Nalla, R.K., Kruzic, J.J., Kinney, J.H., Ritchie, R.O.

“…Age-related deterioration of the fracture properties of bone, coupled with increased life expectancy, is responsible for increasing incidence of bone fracture…”
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On the origin of the toughness of mineralized tissue: microcracking or crack bridging? by Nalla, R.K., Kruzic, J.J., Ritchie, R.O.

“…Two major mechanisms that could potentially be responsible for toughening in mineralized tissues, such as bone and dentin, have been identified—microcracking…”
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