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Journal articles on the topic 'Interface strengthening'

Author: Grafiati
Published: 4 June 2021
Last updated: 15 February 2022

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1

Kalcher, Constanze, Omar Adjaoud, Jochen Rohrer, Alexander Stukowski, and Karsten Albe. "Reinforcement of nanoglasses by interface strengthening." Scripta Materialia 141 (December 2017): 115–19. http://dx.doi.org/10.1016/j.scriptamat.2017.08.004.

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2

Li, Y. P., G. P. Zhang, W. Wang, J. Tan, and S. J. Zhu. "On interface strengthening ability in metallic multilayers." Scripta Materialia 57, no. 2 (July 2007): 117–20. http://dx.doi.org/10.1016/j.scriptamat.2007.03.032.

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3

Peng, Qiuming, Bingcheng Ge, Hui Fu, Yong Sun, Qun Zu, and Jianyu Huang. "Nanoscale coherent interface strengthening of Mg alloys." Nanoscale 10, no. 37 (2018): 18028–35. http://dx.doi.org/10.1039/c8nr04805c.

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Nanoscale coherent boundaries have been proposed, and confirmed as an effective strategy to overcome the strength–ductility trade-off in hcp-type Mg alloys. It is believed that the pathway of nanoscale stacking fault-contraction twins would be effective for the development of other Mg alloys or other hcp-type metals with high strength as well as good ductility.
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4

Cho, Taehong. "Prosodic Boundary Strengthening in the Phonetics-Prosody Interface." Language and Linguistics Compass 10, no. 3 (March 2016): 120–41. http://dx.doi.org/10.1111/lnc3.12178.

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5

Tönshoff, H. K., A. Mohlfeld, I. Oberbeck-Spintig, and C. Marzenell. "Interface strengthening by mechanical surface treatment of substrates." Surface Engineering 14, no. 4 (January 1998): 339–45. http://dx.doi.org/10.1179/sur.1998.14.4.339.

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6

Yang, Fa Zhan, Guang Yao Meng, Jian Qiang Zhou, and Chang He Li. "Tool Materials Design and the Sintering Optimization Based on Interface Strengthening Theory." Advanced Materials Research 150-151 (October 2010): 447–51. http://dx.doi.org/10.4028/www.scientific.net/amr.150-151.447.

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Nowadays, nanocomposite tool materials are very important in engineering field for their excellent mechanical properties and stability under high temperature and have a good foreground in the coming years. However, there are lots of puzzles to be discussed in the materials design theory and the fabrication processing due to the difference between the traditional materials and the nanocomposite. In this paper, a new tool materials design method is proposed based on the interface strengthening theory. The sintering temperature and the soaking time are optimized based on the interface strengthening theory and the relative density of the tool materials is also discussed. The wild phase content can be fixed by calculating the debonding interface rate and the strength requirement of the tool materials. Meanwhile, a series of experiments are carried out to fabricate and optimized the nanocomposite tool materials under the guider of the interface strengthening theory. Results show that experimental data is in accordance well with the calculation and the interface strengthening theory.
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7

Li, Feng, Xiaosong Jiang, Zhenyi Shao, Degui Zhu, and Zhiping Luo. "Research Progress Regarding Interfacial Characteristics and the Strengthening Mechanisms of Titanium Alloy/Hydroxyapatite Composites." Materials 11, no. 8 (August 9, 2018): 1391. http://dx.doi.org/10.3390/ma11081391.

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Titanium alloy/Hydroxyapatite (HA) composites have become a hot research topic in biomedical materials, while there are some challenges concerning bioactivity and mechanical properties such as low interface adhesion at the interface between metal and ceramic, complex interfacial reactions, and so on. Nevertheless, composites with reinforced phases can reach special properties that meet the requirements of biomedical materials due to the strong interfacial interactions between reinforcing phases (nano-carbon, partial oxides, and so on) and Titanium alloys or HA. This review summarizes the interface properties and mechanisms of Titanium alloy/HA composites, including interfacial bonding methods, strengthening and toughening mechanisms, and performance evaluation. On this basis, the interface characteristics and mechanisms of the Titaniumalloy/HA composites with enhanced phase are prospected. The results show that the interfacial bonding methods in the Titanium alloy/HA composites include chemical reactions and mechanical effects. The strengthening and toughening mechanisms contain grain refinement strengthening, second phase strengthening, solution strengthening, cracks and pulling out mechanisms, etc. This review provides a guidline for the fabrication of biocomposites with both mechanical properties and bioactivity.
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8

Weng, Shayuan, Xiang Chen, Xing Yue, Tao Fu, and Xianghe Peng. "Inapparent Strengthening Effect of Twin Interface in Cu/Pd Multilayered Films with a Large Lattice Mismatch." Nanomaterials 9, no. 12 (December 13, 2019): 1778. http://dx.doi.org/10.3390/nano9121778.

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It has been found that there are two kinds of interfaces in a Cu/Pd multilayered film, namely, cube-on-cube and twin. However, the effects of the interfacial structure and modulation period on the mechanical properties of a Cu/Pd multilayered film remain unclear. In this work, molecular dynamics simulations of Cu/Pd multilayered film with different interfaces and modulation periods under in-plane tension are performed to investigate the effects of the interfacial structure and modulation period. The interface misfit dislocation net exhibits a periodic triangular distribution, while the residual internal stress can be released through the bending of dislocation lines. With the increase of the modulation period, the maximum stress shows an upward trend, while the flow stress declines. It was found that the maximum stress and flow stress of the sample with a cube-on-cube interface is higher than that of the sample with a twin interface, which is different from the traditional cognition. This unusual phenomenon is mainly attributed to the discontinuity and unevenness of the twin boundaries caused by the extremely severe lattice mismatch.
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9

Mahmud, Riaz, and Khondaker Sakil Ahmed. "Interface dependency of reinforced concrete jacketing for column strengthening." Proceedings of the Institution of Civil Engineers - Structures and Buildings 173, no. 1 (January 2020): 31–41. http://dx.doi.org/10.1680/jstbu.17.00124.

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10

Basak, Ganesh C., K. Dinesh Kumar, Abhijit Bandyopadhyay, and Anil K. Bhowmick. "Elegant Way of Strengthening Polymer−Polymer Interface Using Nanoclay." ACS Applied Materials & Interfaces 2, no. 10 (October 12, 2010): 2933–43. http://dx.doi.org/10.1021/am100865n.

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11

Mortazavi, S. Alireza, and John D. Smart. "Factors Influencing Gel-strengthening at the Mucoadhesive-mucus Interface." Journal of Pharmacy and Pharmacology 46, no. 2 (February 1994): 86–90. http://dx.doi.org/10.1111/j.2042-7158.1994.tb03746.x.

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12

Aradian, A., E. Raphaël, and P. G. de Gennes. "Strengthening of a Polymer Interface: Interdiffusion and Cross-Linking." Macromolecules 33, no. 25 (December 2000): 9444–51. http://dx.doi.org/10.1021/ma0010581.

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13

Chu, Ke, Fan Wang, Yu-biao Li, Xiao-hu Wang, Da-jian Huang, and Hu Zhang. "Interface structure and strengthening behavior of graphene/CuCr composites." Carbon 133 (July 2018): 127–39. http://dx.doi.org/10.1016/j.carbon.2018.03.018.

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14

Gardiner, RC, and WJ Hozack. "Failure of the cement-bone interface. A consequence of strengthening the cement-prosthesis interface?" Journal of Bone and Joint Surgery. British volume 76-B, no. 1 (January 1994): 49–52. http://dx.doi.org/10.1302/0301-620x.76b1.8300681.

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15

Funakawa, Yoshimasa, Kazuhiro Seto, and Haruo Nakamichi. "Strengthening of Ferritic Steel by Interface Precipitated Carbides in Rows." Materials Science Forum 638-642 (January 2010): 3218–23. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.3218.

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Precipitation-strengthening is widely applied to high strength steel sheet for automotive use since several strength grades are easily achieved by controlling amount of microalloyed component. Recently, finer carbide dispersion has been required to obtain higher strength by smaller addition of carbide formers like titanium and niobium. Here, interface precipitation, one of the carbide formation phenomena during γ→α transformation, can be the efficient method to promote very fine carbides by lowering precipitation temperature. This study deals with relationship between transformation temperatures and hardness of ferritic steel strengthened by carbides generated by the interface precipitation. Two kinds of 0.04%C steels containing Ti and Nb of the same amount as carbon content in atomic were hot-rolled, followed by the soaking at various temperatures for 600s. The rapid-cooled samples before the soaking for 600s exhibited higher hardness than slow-cooled samples. Large carbides generated by interface precipitation were observed in slow-cooled Ti-bearing steel with a transmission electron microscope. In slow-cooled Nb-bearing steel, large NbC precipitated in austenite before γ→α transformation. The results are suggesting that lowering transformation temperature and suppressing carbides precipitation in austenite are important to obtain high strength by interface precipitation.
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16

Zhang, X., A. Misra, H. Wang, T. D. Shen, J. G. Swadener, J. D. Embury, H. Kung, R. G. Hoagland, and M. Nastasi. "Strengthening mechanisms in nanostructured copper/304 stainless steel multilayers." Journal of Materials Research 18, no. 7 (July 2003): 1600–1606. http://dx.doi.org/10.1557/jmr.2003.0220.

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Nanostructured Cu/304 stainless steel (SS) multilayers were prepared by magnetron sputtering. 304SS has a face-centered-cubic (fcc) structure in bulk. However, in the Cu/304SS multilayers, the 304SS layers exhibit the fcc structure for layer thickness of ≤5 nm in epitaxy with the neighboring fcc Cu. For 304SS layer thickness larger than 5 nm, body-centered-cubic (bcc) 304SS grains grow on top of the initial 5 nm fcc SS with the Kurdjumov-Sachs orientation relationship between bcc and fcc SS grains. The maximum hardness of Cu/304SS multilayers is about 5.5 GPa (factor of two enhancement compared to rule-of-mixtures hardness) at a layer thickness of 5 nm. Below 5 nm, hardness decreases with decreasing layer thickness. The peak hardness of fcc/fcc Cu/304SS multilayer is greater than that of Cu/Ni, even though the lattice-parameter mismatch between Cu and Ni is five times greater than that between Cu and 304SS. This result may primarily be attributed to the higher interface barrier stress for single-dislocation transmission across the {111} twinned interfaces in Cu/304SS as compared to the {100} interfaces in Cu/Ni.
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17

Yang, Fa Zhan, Jian Qiang Zhou, Guang Yao Meng, and Chang He Li. "Nanocomposite Materials Design and the Sintering Optimization Based on Interface Strengthening." Advanced Materials Research 139-141 (October 2010): 26–29. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.26.

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Nanocomposite tool materials are developing very fast in engineering field for their highlighted advantage in mechanical properties and stability under high temperature. However, there are lots of puzzles to be discussed in the materials design theory and the fabrication processing due to the difference between the traditional materials and the nanocomposite. Therefore, in this paper, a new nanocomposite tool materials design method has been proposed based on the interface strengthening theory. The sintering temperature and the soaking time could be optimized based on the interface strengthening theory and the relative density of the tool materials. Meanwhile, a series of experiments were carried out to fabricate the nanocomposite tool materials under the guider of the interface strengthening theory. Results showed that experimental data agreed well with the calculation and the model was proved to be correct.
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18

Li, Xiaobing, Guoyin Zu, and Ping Wang. "Interface strengthening of laminated composite produced by asymmetrical roll bonding." Materials Science and Engineering: A 562 (February 2013): 96–100. http://dx.doi.org/10.1016/j.msea.2012.11.028.

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19

Du, J. J., X. Zhang, B. X. Liu, Y. C. Dong, J. H. Feng, C. X. Chen, and F. X. Yin. "Interface strengthening and fracture behavior of multilayer TWIP/TRIP steel." Materials Chemistry and Physics 223 (February 2019): 114–21. http://dx.doi.org/10.1016/j.matchemphys.2018.10.051.

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20

Alford, Mack. "Strengthening the Systems/Software Engineering Interface for Real Time Systems." INCOSE International Symposium 2, no. 1 (July 1992): 411–18. http://dx.doi.org/10.1002/j.2334-5837.1992.tb01521.x.

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21

Song, Fan, and Yilong Bai. "Analysis of the strengthening and toughening of a biomaterial interface." Science in China Series A: Mathematics 44, no. 12 (December 2001): 1596–601. http://dx.doi.org/10.1007/bf02880799.

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22

Zhou, Qing, Ping Huang, Mabao Liu, Fei Wang, Kewei Xu, and Tianjian Lu. "Grain and interface boundaries governed strengthening mechanisms in metallic multilayers." Journal of Alloys and Compounds 698 (March 2017): 906–12. http://dx.doi.org/10.1016/j.jallcom.2016.12.254.

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23

Funari, Marco Francesco, Saverio Spadea, Francesco Fabbrocino, and Raimondo Luciano. "A Moving Interface Finite Element Formulation to Predict Dynamic Edge Debonding in FRP-Strengthened Concrete Beams in Service Conditions." Fibers 8, no. 6 (June 24, 2020): 42. http://dx.doi.org/10.3390/fib8060042.

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A new methodology to predict interfacial debonding phenomena in fibre-reinforced polymer (FRP) concrete beams in the serviceability load condition is proposed. The numerical model, formulated in a bi-dimensional context, incorporates moving mesh modelling of cohesive interfaces in order to simulate crack initiation and propagation between concrete and FRP strengthening. Interface elements are used to predict debonding mechanisms. The concrete beams, as well as the FRP strengthening, follow a one-dimensional model based on Timoshenko beam kinematics theory, whereas the adhesive layer is simulated by using a 2D plane stress formulation. The implementation, which is developed in the framework of a finite element (FE) formulation, as well as the solution scheme and a numerical case study are presented.
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24

Sun, Hao, Shi Lin Liu, and Xiao Gang Li. "Test Analysis of Shear Performance on Young-Old Concrete Interface between Bonded Rebar and Groove." Applied Mechanics and Materials 438-439 (October 2013): 235–39. http://dx.doi.org/10.4028/www.scientific.net/amm.438-439.235.

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The young-old concrete can work together as a whole is the key issue of structural strengthening. Aiming at the technical selection problem appeared frequently in the bridge strengthening about the young-old concrete interface treatments between bonded rebar and grooving, 12 specimens were designed to compare with the shear performance and failure modes of the young-old concrete interface. The test results show that the failure characteristics of specimens which embedded steel bars are ductile, but the failure characteristics of specimens which slotted are brittle and the new concrete in slot position were cut off. And the young-old concrete interface shear strength of the specimens which embedded steel bars was distinctly stronger than that of the slotted specimens. So, the treatment of bonded rebar is proposed during the structural strengthening design. At the same time, the depth and distance of the bonded rebar should be well controlled.
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25

Xiang, Wang, and Guo Bing Ying. "Microstructure and Strengthening Mechanism of TiCp/ZA-12 Composites." Key Engineering Materials 348-349 (September 2007): 221–24. http://dx.doi.org/10.4028/www.scientific.net/kem.348-349.221.

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TiCp/ZA-12 composites have been fabricated by XDTM method and stirring-casting techniques. Microstructure of the composites has been studied by means of scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that TiC particles distribute uniformly in ZA-12 matrix alloy. The interface between reinforcements and matrix alloy is very clean, and there is not interface reaction between TiC particles and ZA-12 matrix alloy. The tests for mechanical properties reveal that the tensile strength, yield strength, elastic modulus and hardness of the composites are improved obviously due to the incorporation of TiC particles. The strengthening mechanisms are attributed to the following factors: dispersion strengthening of TiC particles, grain refinement of ZA-12 matrix alloy and high-density dislocations existing in ZA-12 alloy.
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26

Pan, Shiwei, Xianglin Zhou, Kaixuan Chen, Ming Yang, Yudong Cao, Xiaohua Chen, and Zidong Wang. "In-Situ Nanoparticles: A New Strengthening Method for Metallic Structural Material." Applied Sciences 8, no. 12 (December 3, 2018): 2479. http://dx.doi.org/10.3390/app8122479.

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Over the past several years, coherent interface strengthening was proposed and has since drawn much attention. Unfortunately, many fabrication techniques are restricted to very small size. Recently, a brand new method of in-situ nanoparticle strengthening was systematically investigated, which was proved to be an efficacious way to optimize microstructure and improve mechanical property by utilizing uniformly dispersed nanoparticles. In this review, we summarized recent related advances in investigated steels and Cu alloys, including details of preparation technique and characterization of in-situ nanoparticles. In-situ nanoparticles formed in the melt possess a coherent/semi-coherent relationship with the matrix, which has a similar effect of coherent interface strengthening. In this case, bulk metallic structural materials with dispersed nanoparticles in the matrix can be fabricated through conventional casting process. The effects of in-situ nanoparticles on grain refinement, inhibiting segregation, optimizing inclusions and strengthening are also deeply discussed, which is beneficial for obtaining comprehensive mechanical response. Consequently, it is expected that in-situ nanoparticle strengthening method will become a potential future direction in industrial mass production.
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27

Pineda, Roger Gacula. "Where the Interaction Is Not." International Journal of Art, Culture and Design Technologies 5, no. 1 (January 2016): 1–12. http://dx.doi.org/10.4018/ijacdt.2016010101.

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The concept of interaction is foundational in technology interface design with its presuppositions being taken for granted. But the interaction metaphor has become ambiguous to the extent that its application to interface design contributes to misalignments between people's expected and actual experience with computers. This article re-examines the presuppositions governing human-computer interaction with the motivation of strengthening weaknesses in their foundational concepts. It argues for abandoning the interaction metaphor to refocus design discourse toward the mediation roles of technology interfaces. ‘Remediation', i.e. representation of one medium in another, is proposed as a conceptual model that more precisely describes the human-to-computer actions.
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28

Liu, Ying Ying, Ze Kun Yao, Hong Zhen Guo, and Fang Lin Wu. "Research on the Mechanism of Interface Strengthening for Ti3Al/TC11 Dual Alloy." Advanced Materials Research 314-316 (August 2011): 709–12. http://dx.doi.org/10.4028/www.scientific.net/amr.314-316.709.

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The Ti3Al/TC11 dual alloy bar joined by electron beam welding was deformed by near isothermal forging and then processed by gradient heat treatment. Afterwards, the mechanism of interface strengthening has been investigated according to the microstructure evolution and properties. The results show the brittle phases formed in the re-solidification can be broken by near isothermal forging; the lattice distortion energy is increased obviously due to deformation, so the nucleation ratio of recrystallization is improved, which method is fine-crystal strengthening. After the dual alloy deformed by near isothermal forging is further processed by gradient heat treatment, the room temperature tensile strength of the joint is higher than that of the Ti3Al alloy; the high temperature tensile strength of the joint is equal to or higher than that of the TC11 alloy. The reason is that the finer and phases are precipitated from the phase transus microstructure in the welding interface, which produces the effects of fine-crystal strengthening and dispersion strengthening.
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29

Zheng, Jian Lan, and Wen Da Wu. "Experimental Study on Seismic Performance of Frame Joints Strengthened by Self-Compacting Concrete Considering the Influence of Interface Treatments." Advanced Materials Research 446-449 (January 2012): 502–7. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.502.

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This paper produced four frame joints strengthened by self-compacting concrete and one unstrengthened joint for comparison. Take MTS servo loading system of static test for the frame joints under secondary load，to study the influence of different interface treatments for the seimic performance. The interface of the four strengthened joints respectively using roughening and grooving with different grooving density. The results of the damage process, strain of the old steel and new steel, the load -displacement hysteresis loops was analyzed，and it was found that the cooperational performance of the old concrete and new concrete was good when using self-compacting concrete to strengthen the frame joints with the interface treatments roughening and grooving. Considering the impact of the interface treatment, the ultimate strength, displacement, and displacement ductility coefficient of the reinforced joints etc. were slightly increased. And the the more the grooving density was, the better the strengthening effect was, which could be considered in the design of strengthening as its interface treatment.
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30

Tiwari, Sudhir, J. Bijwe, and S. Panier. "Strengthening of a Fibre-Matrix Interface: A Novel Method Using Nanoparticles." Nanomaterials and Nanotechnology 3 (January 2013): 3. http://dx.doi.org/10.5772/56213.

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31

Matlin, Stephen A., Goverdhan Mehta, Alain Krief, and Henning Hopf. "The Chemical Sciences and Health: Strengthening Synergies at a Vital Interface." ACS Omega 2, no. 10 (October 17, 2017): 6819–21. http://dx.doi.org/10.1021/acsomega.7b01463.

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32

Yu, K. Y., Y. Liu, S. Rios, H. Wang, and X. Zhang. "Strengthening mechanisms of Ag/Ni immiscible multilayers with fcc/fcc interface." Surface and Coatings Technology 237 (December 2013): 269–75. http://dx.doi.org/10.1016/j.surfcoat.2013.05.051.

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33

Li, Wei, Ping Liu, Pengcan Chen, Ke Zhang, Fengcang Ma, Xinkuan Liu, Rui Feng, and Peter K. Liaw. "Microstructure and a coherent-interface strengthening mechanism of NbSiN nanocomposite film." Thin Solid Films 636 (August 2017): 1–7. http://dx.doi.org/10.1016/j.tsf.2017.05.022.

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34

Shalini, Singh. "Enrichment and strengthening of Indian biotechnolgy industry along with academic interface." International Journal of Educational Administration and Policy Studies 6, no. 8 (October 31, 2014): 154–58. http://dx.doi.org/10.5897/ijeaps2014.0357.

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35

Marfia, S., E. Sacco, and J. Toti. "A coupled interface-body nonlocal damage model for FRP strengthening detachment." Computational Mechanics 50, no. 3 (April 9, 2011): 335–51. http://dx.doi.org/10.1007/s00466-011-0592-7.

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36

Gong, Xiu-Fang, Gong Xian Yang, You Heng Fu, Yi Qun Xie, Jun Zhuang, and Xi-Jing Ning. "First-principles study of Ni/Ni3Al interface strengthening by alloying elements." Computational Materials Science 47, no. 2 (December 2009): 320–25. http://dx.doi.org/10.1016/j.commatsci.2009.08.008.

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37

Aronov, V. "Friction Induced Strengthening Mechanisms of Magnesia Partially Stabilized Zirconia." Journal of Tribology 109, no. 3 (July 1, 1987): 531–36. http://dx.doi.org/10.1115/1.3261496.

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Experimental investigation of the wear behavior of Magnesia Partially Stabilized Zirconia (Mg-PSZ) rubbed against itself showed that up to three orders of magnitude increase in the wear resistance can be achieved in a particular temperature range that depends on both the sliding speed and the ambient temperature. XRD analysis revealed that thermally induced phase transformation takes place on the frictional interface. Surface analysis show that wear rates at maximum wear resistance are controlled by the crack generation kinetics rather than by crack propagation kinetics. The plastic strain before fracture varies with temperature. The maximum plastic strain was observed at the temperature of maximum wear resistance. A phenomenological model is presented that provides an explanation for the wear temperature behavior of Mg-PSZ. The model is based on the following chain of events that takes place on the frictional interface: spatial overheating of the surface areas, phase transformation of the overheated areas, cooling, volume expansion, and development of a compressive stress field in the near surface volumes.
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38

Leone, Marianovella, Margherita Stefania Sciolti, Francesco Micelli, and Maria Antonietta Aiello. "The Interface Behavior between External FRP Reinforcement and Masonry." Key Engineering Materials 624 (September 2014): 178–85. http://dx.doi.org/10.4028/www.scientific.net/kem.624.178.

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The need to guarantee higher safety levels of masonry structures under both short and long term conditions, have led to the use of new materials and technologies, in conjunction or in place of traditional ones. In this context, fiber-reinforced composite materials have gained an increasing success, mostly for strengthening, retrofitting and repair existing structures. As well known, the analysis of the interface performance of FRP (Fiber Reinforced Polymer) composites and masonry substrate is a critical problem as it influences the effectiveness of the technique. The present paper reports part of a large research project, still in progress, focused on the analysis of the bond performance between FRP sheet and different type of masonry substrates. The obtained experimental data were analysed in terms of bond strength and the kind of failure. The influence of the deformability of the strengthening material as well as the mechanical performance of the substrates are also discussed.
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39

Han, Ke. "Strength and Ductility of Nanostructured Composites with Co-Deformable Components." Materials Science Forum 633-634 (November 2009): 383–92. http://dx.doi.org/10.4028/www.scientific.net/msf.633-634.383.

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This paper reviews research on nanostructured high strength wires and strips. Such materials have sufficient ductility and they have found application in a variety of areas. The high strength of the materials is achieved by refinement of the spacing between the strengthening fibers. Due to the refined microstructure, the materials have very large interphase interface areas. Such interfaces provide very effective barriers for dislocation motions. In spite of their microstructural refinement, the materials still have sufficient ductility that gives them engineering values.
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40

Nováček, Jan, and Miloš Zich. "Study of Strengthening Flat Slabs against Punching by Additional Column Heads." Key Engineering Materials 691 (May 2016): 321–32. http://dx.doi.org/10.4028/www.scientific.net/kem.691.321.

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Over the past few years, punching shear has been in the forefront of both research teams and professional public due to a new approach to its verification according to Model Code 2010. From this topic, the task of flat slabs strengthening against punching shear has arisen. This problem, and in particular the problem of flat slabs strengthened by additional concrete column heads, is the focus of this paper. Structures are analysed using a 3D FEM models including material and geometric nonlinearity. The way of modelling is validated against experiments on non-strengthened flat slabs subjected to punching shear. At first, strengthening with a rigid connection at the interface between structures is considered and then, several different types of connection at the interface are evaluated. Finally, strengthening of structures with varying lengths of top flexural reinforcement in the slab is modelled while minimum anchorage length outside the additional column head is verified.
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41

Han, Jung-Gu, Jae Bin Lee, Aming Cha, Tae Kyung Lee, Woongrae Cho, Sujong Chae, Seok Ju Kang, et al. "Unsymmetrical fluorinated malonatoborate as an amphoteric additive for high-energy-density lithium-ion batteries." Energy & Environmental Science 11, no. 6 (2018): 1552–62. http://dx.doi.org/10.1039/c8ee00372f.

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42

Ha, Jong Su, and Sun Ig Hong. "Microstructure and Mechanical Propertiesof Ti/Cu-Cr/S20C and Ti/Cu-Ag/S20C Clad Composites." Applied Mechanics and Materials 376 (August 2013): 153–57. http://dx.doi.org/10.4028/www.scientific.net/amm.376.153.

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In this study Cu-Ag or Cu-Cr layer was sandwiched by Ti and Fe plates and the three layers of Ti/Cu-8Ag/S20C were clad by High Pressure Torsioning(HPT). The effect of post-HPT heat treatment on the interfacial reaction products and the mechanical performance in Ti/Cu-Ag/S20C and Ti/Cu-Cr/S20C clad material were studied. Cu4Ti3 and Cu4Ti Intremetallic compound layers were observed at the Ti/Cu-Ag and Ti/Cu-Cr interfaces in the clad heat-treated at 500°C where as no intermetallic compounds were observed at the Cu-Ag/S20C and Cu-Cr/S20C interfaces. The strength of as-HPTed Ti/Cu-8Ag/S20C is much higher than that of Ti/Cu-1Cr/S20C. The strengthening mechanism of Cu-Ag deformed severely is the interface and strain hardening in which dislocations are deposited at the Cu/Ag interfaces and can contribute to the strengthening of the clad composite just after HPT processing, rendering the high strength just after processing. In both clad composites, the strength and ductility increased after heat treatment at 350°C, which are likely caused by the enhanced bonding at the interfaces.
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43

Chen, Zejun, and Quanzhong Chen. "Interface Shear Actions and Mechanical Properties of Nanostructured Dissimilar Al Alloy Laminated Metal Composites." Journal of Nanomaterials 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/612029.

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The laminated metal composites (LMCs) of dissimilar metals (aluminium alloys: AA1100/AA7075) were fabricated using the accumulative roll bonding technique in conjunction with cold rolling. The LMCs of ultrafine grained AA1100 and nanostructured precipitates of AA7075 achieved metallurgical bonding. The microstructure of the bonding interfaces and constituent metals was investigated using scanning electron microscopy and transmission electron microscopy for the LMCs with different layers. The deformation incompatibility and shear actions were analyzed using the microanalysis of dissimilar bonding interfaces. The mechanism of grain refinement of LMCs was investigated and described based on the microstructure characterization. The mechanical properties, strengthening mechanism, and fracture mechanism of LMCs were also investigated. The research results showed that the strengthening mechanism of LMCs is the recombination action of grain refinement, dislocation, and laminated interfacial strengthening. The coordinated deformation of dissimilar metals and the layer thickness are important in improving the mechanical properties of LMCs consisting of dissimilar metals.
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44

Lau, Kin-tak, Li-min Zhou, and Li Ye. "Strengthening and Strain Sensing of Rectangular Concrete Beam Using Composites and Fbg Sensors." Advanced Composites Letters 8, no. 6 (November 1999): 096369359900800. http://dx.doi.org/10.1177/096369359900800607.

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In this paper, a state-of-art report of an experimental investigation on the mechanical properties of the laboratory size notched-concrete beams strengthened by using fibre woven composites is presented. Fibre-optic Bragg grating (FBG) sensors have been adhered on the concrete surface before laying up the composites to monitor the strain changes at the interface when the concrete beam was subjected to three-point bending load after strengthening. The electrical strain gauges were also used to measure the surface strain of the composites and compare the results from the internal sensors. The results show that the overall flexural strengths of the strengthened specimens are increased compared with its un-strengthened status. Concrete and bonding failures were observed when the thick reinforcement was used. In addition, the results obtained from the sensor reveal that the strain at the interface of bond was higher than that measured on the surface of the composite reinforcement. High strain was measured from the sensor when debond at the interface occurred.
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45

Zhang, Shun, Yong Sun, Ruizhi Wu, Xiang Wang, Xiao-Bo Chen, Carlos Fernandez, and Qiuming Peng. "Coherent interface strengthening of ultrahigh pressure heat-treated Mg-Li-Y alloys." Journal of Materials Science & Technology 51 (August 2020): 79–83. http://dx.doi.org/10.1016/j.jmst.2020.02.039.

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46

ZHENG, Y., J. LU, H. ZHANG, and Z. CHEN. "Strengthening and toughening by interface-mediated slip transfer reaction in nanotwinned copper." Scripta Materialia 60, no. 7 (April 2009): 508–11. http://dx.doi.org/10.1016/j.scriptamat.2008.11.039.

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47

Zhang, Xiaoqian, Wei Zou, Zhongjie Du, Hangquan Li, Shuxin Li, Minjun Liu, Chen Zhang, and Wenli Guo. "Fabrication of porous polyurethane monoliths on strengthening interface of concentrated emulsion polymerization." Materials Chemistry and Physics 164 (August 2015): 78–84. http://dx.doi.org/10.1016/j.matchemphys.2015.08.025.

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48

Li, Victor C., and Henrik Stang. "Interface property characterization and strengthening mechanisms in fiber reinforced cement based composites." Advanced Cement Based Materials 6, no. 1 (June 1997): 1–20. http://dx.doi.org/10.1016/s1065-7355(97)90001-8.

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49

Nkiaka, Elias, and Jon C. Lovett. "Strengthening the science-policy interface for climate adaptation: stakeholder perceptions in Cameroon." Regional Environmental Change 19, no. 4 (January 11, 2019): 1047–57. http://dx.doi.org/10.1007/s10113-018-1441-4.

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50

Chen, Yongtao, Xinghai Liu, Tingbo Zhang, Haonan Xie, Naiqin Zhao, Chunsheng Shi, Chunnian He, Jiajun Li, and Enzuo Liu. "Interface intrinsic strengthening mechanism on the tensile properties of Al2O3/Al composites." Computational Materials Science 169 (November 2019): 109131. http://dx.doi.org/10.1016/j.commatsci.2019.109131.

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