Relevant bibliographies by topics / String ribbon

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'String ribbon'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'String ribbon.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "String ribbon"

1

Wallace, R. L., J. I. Hanoka, A. Rohatgi, and G. Crotty. "Thin silicon string ribbon." Solar Energy Materials and Solar Cells 48, no. 1-4 (November 1997): 179–86. http://dx.doi.org/10.1016/s0927-0248(97)00101-3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Oh, WonJe, JiSu Park, Minsoo Kwon, Jaehyeong Lee, EungKwon Kim, Yongseob Park, and Chaehwan Jeong. "Analysis of Resistance According to Metal Ribbon Connection for Application to Interconnection of Shingled Photovoltaic Strings." Journal of Nanoscience and Nanotechnology 20, no. 11 (November 1, 2020): 6992–95. http://dx.doi.org/10.1166/jnn.2020.18836.

Full text
Abstract:
The Shingle Photovoltaic (PV) module is a new high power PV module technology manufactured by ’Dividing and ECA (Electrical Conductivity Adhesive) bonding’ method for solar cell. In the case of a general PV module, a metal ribbon is soldered on the bus bar of the solar cell and connected to others. The dividing/ECA bonding technology connects the divided cells through bonding to manufacture a string. In order to make a module, the fabricated strings must be connected with Bus ribbon. The Shingled strings produced by the dividing and bonding method are not limited to the interconnection method by the metal ribbon. Also, it is not standardized for interconnections between strings. Therefore, we analyzed the characteristics of the shingled strings according to the soldering method. The characteristics of the string vary depending on the number of metal ribbons that contact the solar cell electrodes. Experimental results show that the series resistance increases significantly with fewer contacts. As a result, the efficiency of two-point contact decreased by 0.458%, four-point contact decreased by 0.048%, and eight-point contact decreased by 0.034%. This is because as the number of contacts increases, the resistance of the busbars becomes smaller and the contact resistance becomes smaller.
APA, Harvard, Vancouver, ISO, and other styles
3

SILVER, DANIEL S., and SUSAN G. WILLIAMS. "AN INVARIANT FOR OPEN VIRTUAL STRINGS." Journal of Knot Theory and Its Ramifications 15, no. 02 (February 2006): 143–52. http://dx.doi.org/10.1142/s0218216506004397.

Full text
Abstract:
Extended Alexander groups are used to define an invariant for open virtual strings. Examples of non-commuting open strings and a ribbon-concordance obstruction are given. An example is given of a slice open virtual string that is not ribbon. Definitions are extended to open n-strings.
APA, Harvard, Vancouver, ISO, and other styles
4

Colombari, Boris. "Welded extensions and ribbon restrictions of diagrammatical moves." Journal of Knot Theory and Its Ramifications 30, no. 02 (February 2021): 2150008. http://dx.doi.org/10.1142/s0218216521500085.

Full text
Abstract:
In this paper, we consider local moves on classical and welded diagrams of string links, and the notion of welded extension of a classical move. Such extensions being non-unique in general, the idea is to find a topological criterion which could isolate one extension from the others. To that end, we turn to the relation between welded string links and knotted surfaces in [Formula: see text], and the ribbon subclass of these surfaces. This provides a topological interpretation of classical local moves as surgeries on surfaces, and of virtual local moves as surgeries on ribbon surfaces. Comparing these surgeries leads to the notion of ribbon residue of a classical local move, and we show that up to some broad conditions there can be at most one welded extension which is a ribbon residue. We provide three examples of ribbon residues, for the self-crossing change, the Delta and the band-pass moves. However, for the latter, we note that the given residue is actually not an extension of the band-pass move, showing that a classical move may have a ribbon residue and a welded extension, but no ribbon residue which is an extension.
APA, Harvard, Vancouver, ISO, and other styles
5

Hahn, G., and P. Geiger. "Record efficiencies for EFG and string ribbon solar cells." Progress in Photovoltaics: Research and Applications 11, no. 5 (2003): 341–46. http://dx.doi.org/10.1002/pip.498.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Reimann, C., G. Müller, J. Friedrich, K. Lauer, A. Simonis, H. Wätzig, S. Krehan, R. Hartmann, and A. Kruse. "Systematic characterization of multi-crystalline silicon String Ribbon wafer." Journal of Crystal Growth 361 (December 2012): 38–43. http://dx.doi.org/10.1016/j.jcrysgro.2012.08.022.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Li, Jian Gong, Peng Wu, Peng Yu, and Shu Ai Li. "Ribbon Silicon Material for Solar Cells." Advanced Materials Research 531 (June 2012): 67–70. http://dx.doi.org/10.4028/www.scientific.net/amr.531.67.

Full text
Abstract:
Solar cell is one of most important renewable energy. But now it is not be widely used because of its high cost compared with traditional resource. Ribbon silicon is one new low cost solar cell material avoiding ingot casting and slicing. It is a promising silicon wafer fabrication technology alternative to traditional ingot casting and slicing. Using ribbon silicon can make solar cell production cost greatly reduced. In this paper EFG, String Ribbon and a novel silicon wafer are discussed.
APA, Harvard, Vancouver, ISO, and other styles
8

M. Salyani, R. D. Sweeb, and M. Farooq. "Comparison of String and Ribbon Samplers in Orchard Spray Applications." Transactions of the ASABE 49, no. 6 (2006): 1705–10. http://dx.doi.org/10.13031/2013.22287.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Cichoszewski, J., M. Reuter, and J. H. Werner. "+0.4% Efficiency gain by novel texture for String Ribbon solar cells." Solar Energy Materials and Solar Cells 101 (June 2012): 1–4. http://dx.doi.org/10.1016/j.solmat.2012.01.031.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Nakayashiki, Kenta, Brian Rousaville, Vijay Yelundur, Dong Seop Kim, Ajeet Rohatgi, Robert Clark-Phelps, and Jack I. Hanoka. "Fabrication and analysis of high-efficiency String Ribbon Si solar cells." Solid-State Electronics 50, no. 7-8 (July 2006): 1406–12. http://dx.doi.org/10.1016/j.sse.2006.06.011.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "String ribbon"

1

Yelundur, Vijay Nag. "Understanding and Implementation of Hydrogen Passivation of Defects in String Ribbon Silicon for High-Efficiency, Manufacturable, Silicon Solar Cells." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/5271.

Full text
Abstract:
Photovoltaics offers a unique solution to energy and environmental problems simultaneously. However, widespread application of photovoltaics will not be realized until costs are reduced by about a factor of four without sacrificing performance. Silicon crystallization and wafering account for about 55% of the photovoltaic module manufacturing cost, but can be reduced significantly if a ribbon silicon material, such as String Ribbon Si, is used as an alternative to cast Si. However, the growth of String Ribbon leads to a high density of electrically active bulk defects that limit the minority carrier lifetime and solar cell performance. The research tasks of this thesis focus on the understanding, development, and implementation of defect passivation techniques to increase the bulk carrier lifetime in String Ribbon Si in order to enhance solar cell efficiency. Hydrogen passivation of defects in Si can be performed during solar cell processing by utilizing the hydrogen available during plasma-enhanced chemical vapor deposition (PECVD) of SiNx:H films. It is shown in this thesis that hydrogen passivation of defects during the simultaneous anneal of a screen-printed Al layer on the back and a PECVD SiNx:H film increases the bulk lifetime in String Ribbon by more than 30 ?A three step physical model is proposed to explain the hydrogen defect passivation. Appropriate implementation of the Al-enhanced defect passivation treatment leads to String Ribbon solar cell efficiencies as high as 14.7%. Further enhancement of bulk lifetime up to 92 ?s achieved through in-situ NH3 plasma pretreatment and low-frequency (LF) plasma excitation during SiNx:H deposition followed by a rapid thermal anneal (RTA). Development of an optimized two-step RTA firing cycle for hydrogen passivation, the formation of an Al-doped back surface field, and screen-printed contact firing results in solar cell efficiencies as high as 15.6%. In the final task of this thesis, a rapid thermal treatment performed in a conveyer belt furnace is developed to achieve a peak efficiency of 15.9% with a bulk lifetime of 140 ?Simulations of further solar cell efficiency enhancement up to 17-18% are presented to provide guidance for future research.
APA, Harvard, Vancouver, ISO, and other styles
2

Yelundur, Vijay Nag /. "Understanding and Implementation of Hydrogen Passivation of Defects in String Ribbon Silicon for High-Efficiency, Manufacturable, Silicon Solar Cells." Available online, 2003. http://etd.gatech.edu/theses/available/etd-11192003-164008/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Castellanos, Rodríguez Sergio. "Application of infrared birefringence imaging for measuring residual stress in multicrystalline, quasi-mono, dendritic web, and string ribbon silicon for solar cells." Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/88385.

Full text
Abstract:
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2014.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 96-102).
One of the parameters with highest impact on photovoltaic module cost is manufacturing yield during solar cell production. Yield is, to a great extent, directly affected by the crystallization technique used to grow the substrate wafers due to its role in generating residual stresses that can lead to fracture upon wafer processing and handling. This thesis explores the nature, impact, and a method for quantifying residual stresses in silicon wafers used for solar cells. The combination of an infrared birefringence imaging technique along with a sectioning method is proposed as an approach to spatially resolve and decouple the in-plane residual stress components on four wafers originating from different growth methods. The suitability of this technique is verified, and recommendations for future expansion of this work are presented.
by Sergio Castellanos Rodriguez.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
4

Buchberger, Igor. "Strings, Gravitons, and Effective Field Theories." Doctoral thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-41912.

Full text
Abstract:
This thesis concerns a range of aspects of theoretical physics. It is composed of two parts. In the first part we motivate our line of research, and introduce and discuss the relevant concepts. In the second part, four research papers are collected. The first paper deals with a possible extension of general relativity, namely the recently discovered classically consistent bimetric theory. In this paper we study the behavior of perturbations of the metric(s) around cosmologically viable background solutions. In the second paper, we explore possibilities for particle physics with low-scale supersymmetry. In particular we consider the addition of supersymmetric higher-dimensional operators to the minimal supersymmetric standard model, and study collider phenomenology in this class of models. The third paper deals with a possible extension of the notion of Lie algebras within category theory. Considering Lie algebras as objects in additive symmetric ribbon categories we define the proper Killing form morphism and explore its role towards a structure theory of Lie algebras in this setting. Finally, the last paper is concerned with the computation of string amplitudes in four dimensional models with reduced supersymmetry. In particular, we develop general techniques to compute amplitudes involving gauge bosons and gravitons and explicitly compute the corresponding three- and four-point functions. On the one hand, these results can be used to extract important pieces of the effective actions that string theory dictates, on the other they can be used as a tool to compute the corresponding field theory amplitudes.
Over the last twenty years there have been spectacular observations and experimental achievements in fundamental physics. Nevertheless all the physical phenomena observed so far can still be explained in terms of two old models, namely the Standard Model of particle physics and the ΛCDM cosmological model. These models are based on profoundly different theories, quantum field theory and the general theory of relativity. There are many reasons to believe that the SM and the ΛCDM are effective models, that is they are valid at the energy scales probed so far but need to be extended and generalized to account of phenomena at higher energies. There are several proposals to extend these models and one promising theory that unifies all the fundamental interactions of nature: string theory. With the research documented in this thesis we contribute with four tiny drops to the filling of the fundamental physics research pot. When the pot will be saturated, the next fundamental discovery will take place.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "String ribbon"

1

Severn, Bill. Bill Severn's magic with rope, ribbon, and string. Mechanicsburg, PA: Stackpole Books, 1994.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Afshar, Ani. Beaded fantasies.: A step-by-step workshop. Atglen, PA: Schiffer Pub. Ltd., 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Afshar, Ani. Beaded fantasies. Atglen, PA: Schiffer Pub. Ltd., 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Afshar, Ani. Beaded fantasies.: A step-by-step workshop. Atglen, PA: Schiffer Pub. Ltd., 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Afshar, Ani. Beaded fantasies. Atglen, PA: Schiffer Pub. Ltd., 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Afshar, Ani. Beaded fantasies. Atglen, PA: Schiffer Pub. Ltd., 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Afshar, Ani. Beaded fantasies. Atglen, PA: Schiffer Pub. Ltd., 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Afshar, Ani. Beaded fantasies. Atglen, PA: Schiffer Pub. Ltd., 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ikeda, Hiroaki. "Ribon no kishi" to yume no ōkoku, fantajī hen. Tōkyō: Asahi Shinbunsha, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Xiao xiong gong zuo shi, ed. Riben xun bao ji. Nanchang: Er shi yi shi ji chu ban she, 2008.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "String ribbon"

1

Malyshev, Dmitry. "Ribbon Graphs And Surfaces." In Progress in String, Field and Particle Theory, 437–40. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0211-0_33.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Guo, Shi Hai, Yang Huan Zhang, Bai Yun Quan, Jian Liang Li, and Xin Lin Wang. "Martensitic Transformation and Magnetic-Field-Induced Strain in Magnetic Shape Memory Alloy NiMnGa Melt-Spun Ribbon." In Materials Science Forum, 2009–12. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-960-1.2009.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Zhao, W. R., Jian Liang Li, Yan Qi, and Xin Lin Wang. "Martensitic Transition and Magnetic Field-Induced Strains in Melt-Spun Ni-Mn-Ga Ribbons." In Materials Science Forum, 2235–38. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-960-1.2235.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Athurupana, Bhathiya, Jun Muto, and Hiroyuki Nagahama. "Development of Quartz Ribbons in Felsic Granulites Under Strong Coaxial Deformation in the Highland Complex of Sri Lanka." In The Structural Geology Contribution to the Africa-Eurasia Geology: Basement and Reservoir Structure, Ore Mineralisation and Tectonic Modelling, 33–35. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01455-1_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Nishimoto, Soya, Michiaki Yamasaki, Shin-ichi Inoue, and Yoshihito Kawamura. "Investigation of Microstructural Factors Affecting the Plane-Strain Fracture Toughness of Mg–Zn–Y–Al Alloys Processed by Consolidation of Rapidly Solidified Ribbons." In The Minerals, Metals & Materials Series, 71–77. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72432-0_8.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Gabor, A. M., D. L. Hutton, and J. I. Hanoka. "Monolithic Modules Incorporating String Ribbon Silicon Solar Cells with Wraparound Contacts." In Sixteenth European Photovoltaic Solar Energy Conference, 2083–86. Routledge, 2020. http://dx.doi.org/10.4324/9781315074405-5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hughes, Kyle, and Donald M. MacRaild. "Catholic Collectivism at Home and Abroad during the Famine Period." In Ribbon Societies in Nineteenth-Century Ireland and its Diaspora, 169–92. Liverpool University Press, 2018. http://dx.doi.org/10.3828/liverpool/9781786941350.003.0006.

Full text
Abstract:
This chapter explores the emergence of new forms of Ribbonism in the 1840s and early 1850s, assessing their originality as well as their strong continuities with previous forms of both organized Ribbonism and generalized, scaremongering anti-Ribbonism. In the 1850s, the state retained its emphasis on the clandestine dimension. The state continued to expend considerable financial sums trying to break open rackets, rings, and networks that policemen, spies, and administrators dubbed Ribbonism. As the chapter shows, Donegal as much as Britain, and the well-trodden ground of Dublin and Belfast, would provide examples of this.
APA, Harvard, Vancouver, ISO, and other styles
8

Jack, Zachary Michael. "Springtime on the Prairie." In The Haunt of Home, 47–58. Cornell University Press, 2020. http://dx.doi.org/10.7591/cornell/9781501751790.003.0004.

Full text
Abstract:
This chapter describes springtime on the prairie. Canadian geese ply flyways, check ancestral routes against hard memories, against ribbons of rivers. They herald the season, trumpeting the first push of Gulf air. Those who do not live to see first thaw keep the funeral parlors busy. The chapter then talks about the arrival of monks, émigrés come from out of state to tend the monastery's hardwood groves. The monks have become naturalized citizens of a state that specializes in death and dying. For a price, the monks of the Order of Cistercians of the Strict Observance are pleased to offer an exclusive line of custom-designed caskets and urns for University of Notre Dame alumni and their families.
APA, Harvard, Vancouver, ISO, and other styles
9

"Benthic Habitats and the Effects of Fishing." In Benthic Habitats and the Effects of Fishing, edited by MELANIE BERGMANN, HILMAR HINZ, ROBERT E. BLYTH, MICHAEL J. KAISER, STUART I. ROGERS, and MIKE J. ARMSTRONG. American Fisheries Society, 2005. http://dx.doi.org/10.47886/9781888569605.ch45.

Full text
Abstract:
<strong><em>Abstract. </em><strong>Fishers have often complained that standard United Kingdom groundfish survey data do not adequately reflect the grounds targeted by commercial fishers, and hence, scientists tend to make overcautious estimates of fish abundance. Such criticisms are of particular importance if we are to make a creditable attempt to classify potential essential fish habitat (EFH) using existing data from groundfish surveys. Nevertheless, these data sets provide a powerful tool to examine temporal abundance of fish on a large spatial scale. Here, we report a questionnaire-type survey of fishers (2001–2002) that invited them to plot the location of grounds of key importance in the Irish Sea and to comment on key habitat features that might constitute EFH for Atlantic cod <em>Gadus morhua</em>, haddock <em>Melanogrammus aeglefinus</em>, and European whiting <em>Merlangius merlangus</em>. Plotted grounds were cross-checked using records of vessel sightings by fishery protection aircraft (1985–1999). A comparison of the areas of seabed highlighted by fishers and the observations made on groundfish surveys were broadly compatible for all three species of gadoids examined. Both methods indicated important grounds for cod and European whiting off northern Wales, the Ribble estuary, Solway Firth, north of Dublin, and Belfast Lough. The majority of vessel sightings by aircraft did not match the areas plotted by fishers. However, fishing restrictions, adverse weather conditions, and seasonal variation of fish stocks may have forced fishers to operate outside their favored areas on the (few) occasions that they had been recorded by aircraft. Fishers provided biological observations that were consistent among several independent sources (e.g., the occurrence of haddock over brittle star [ophiuroid] beds). We conclude that fishers’ knowledge is a useful supplement to existing data sets that can better focus more detailed EFH studies.
APA, Harvard, Vancouver, ISO, and other styles
10

"the sudden flickerings of hand to mouth and expulsions of breath that fill the car with smoke as his mind fights what will happen when we get there. Worry Dolls I laugh at your funny hairband with its crude, bright thread-dolls tacked to a coarse, purple ribbon. ‘You tell each doll one worry at night and it helps—a little,’ you explain, laughing back. It seems to me a talisman that must come from your Costa Rican life, invested with some jungle peoples’ folklore for healing, but dates, you say, from a day of ‘retail therapy’ at a shopping mall near Rancocas Valley Hospital. Trust you to transcend the banal with the potent and magical. We wore each other out with sleep deprivation this visit, playing worry dolls until that dead time when it is quiet even on West Holly Avenue, - and it helped. And now you are back in Shy Town asking why visits have to mean a week of tired, and I am still here in limbo between worlds smiling at the bit of magic you take with you, and leave behind; and I remember us laughing, with some unease in our amazement, at my story of the old woman in her Sunday coat who spoke my thoughts out loud that day under the ‘L’ when I too inhabited the strange world you live in now: ‘I don’t like State Street.’ ‘I just don’t like State Street.’ Too much voodoo on State Street.’ I think of you there, a bird of paradise in a high-rise cage, cycling on your mountain bike after dark among demons of the city, and I send you some magic in return—some good voodoo vibes to balance the odds, to make you smile,." In Feminist Review, 82. Routledge, 2005. http://dx.doi.org/10.4324/9780203989999-12.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "String ribbon"

1

Hanoka, J. I. "Innovations in string ribbon module manufacturing." In National center for photovoltaics (NCPV) 15th program review meeting. AIP, 1999. http://dx.doi.org/10.1063/1.57936.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Kraemer, F., J. Seib, E. Peter, and S. Wiese. "Mechanical stress analysis in photovoltaic cells during the string-ribbon interconnection process." In 2014 15th International Conference on Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE). IEEE, 2014. http://dx.doi.org/10.1109/eurosime.2014.6813853.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Masoud Salyani, Roy D. Sweeb, and Muhammad Farooq. "Spray Capture Efficiencies of Ribbon and String Targets Used in Orchard Applications." In 2006 Portland, Oregon, July 9-12, 2006. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2006. http://dx.doi.org/10.13031/2013.20629.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Fu-Ming Lin, Cheng-Yu Peng, Ray-Chien Lai, Fang-Yao Yeh, and Wen-Ching Sun. "Performance determination of cell string by measuring the series resistance associated with the soldering ribbon and soldering temperature." In 2008 33rd IEEE Photovolatic Specialists Conference (PVSC). IEEE, 2008. http://dx.doi.org/10.1109/pvsc.2008.4922584.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Jiang, Guoliang, Patrick Van Vickle, and Kara Peters. "Monitoring of FRP Strengthened Structures Using a Modified Time of Flight Interferometer." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-13202.

Full text
Abstract:
In this paper, we demonstrate a modified time of flight fiber optic sensor interferometer that provides global strain information for large-scale FRP strengthened structures with significantly increased strain sensitivity. With the originally continuous signals being reconstructed from the discretely sampled points using a sinc interpolation function, the sensing resolution of the interferometer is demonstrated to be significantly higher than through direct interrogation. To easily embed the FOS in structures and effectively increase the fiber sensing length, a commercially available prefabricated fiber ribbon is used. The results of bending tests of FRP beams with the embedded ribbon demonstrate the increase in strain sensitivity as well as no detectable loss in strength of the FRP plates due to the embedded fiber ribbons. Results from static loading test of a FRP strengthened beam with embedded fiber ribbons show the feasibility of this technique for self-monitoring FRP retrofits.
APA, Harvard, Vancouver, ISO, and other styles
6

Hassan, Mohd R., F. Scarpa, N. A. Mohammed, and Y. Ancrenaz. "Conventional and Auxetic SMA Cellular Structures." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-81075.

Full text
Abstract:
This work illustrates the manufacturing and tensile testing of a novel concept of honeycomb structures with hexagonal and auxetic (negative Poisson’s ratio) topology, made of shape memory alloy (SMA) core material. The honeycombs are manufactured using Nitinol ribbons having 6.40 mm of width and 0.2 mm of thickness. The ribbons were inserted in a special dye using cyanoacrilate to bond the longitudinal strips of the unit cells. The ribbons were subjected to tensile test at room temperature (martensite finish) and austenite finish temperature. Tensile tests at room temperature were performed on the honeycomb. The stress-strain curve obtained from the test on a single ribbon at room temperature was then used to develop nonlinear Finite Element beam elements using a commercial code. The beam elements were then used to model the honeycomb samples under tensile loading. Good agreement is observed between numerical nonlinear simulations and the experimental results.
APA, Harvard, Vancouver, ISO, and other styles
7

Nakagawa, Ryohei, Zhi Wang, and Ken Suzuki. "Area-Arrayed Graphene Nano-Ribbon-Base Strain Sensor." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87277.

Full text
Abstract:
Health monitoring devices using a strain sensor, which shows high sensitivity and large deformability, are strongly demanded due to further aging of society with fewer children. Conventional strain sensors, such as metallic strain gauges and semiconductive strain sensors, however, aren’t applicable to health monitoring because of their low sensitivity and deformability. In this study, fundamental design of area-arrayed graphene nano-ribbon (GNR) strain senor was proposed in order to fabricate next-generation strain sensor. The sensor was consisted of two sections, which are stress concentration section and stress detecting section. This structure can take full advantage of GNR’s properties. Moreover, high quality GNR fabrication process, which is one of the important process in the sensor, was developed by applying CVD (Chemical Vapor Deposition) method. Top-down approach was applied to fabricate the GNR. At first, in order to synthesize a high-quality graphene sheet, acetylene-based LPCVD (low pressure chemical vapor deposition) using a closed Cu foil was employed. After that, graphene was transferred silicon substrate and the quality was evaluated. The high quality graphene was transferred on the soft PDMS substrate and metallic electrodes were fabricated by applying MEMS technology. Area-arrayed fine pin structure was fabricated by using hard PDMS as a stress-concentration section. Finally, both sections were integrated to form a highly sensitive and large deformable pressure sensor. The strain sensitivity of the GNR-base sensor was also evaluated.
APA, Harvard, Vancouver, ISO, and other styles
8

Sasaki, Shinichirou, Meng Yang, Ken Suzuki, and Hideo Miura. "Highly-Sensitive Graphene Nano-Ribbon-Base Strain Sensor." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-67602.

Full text
Abstract:
Large-area and high-quality monolayer graphene was synthesized in order to fabricate a graphene-base highly sensitive strain sensor. A rapid LPCVD (Low Pressure Chemical vaper deposition) synthesis process of monolayer graphene was developed by using acetylene as a resource gas. To synthesize high-quality single-crystal graphene, the surface of copper substrate was strongly orientated to (111) crystallographic plane. By optimizing the concentration of acetylene gas by diluting hydrogen, the high quality of monolayer single-crystalline graphene film was successfully grown on the copper substrate. A strain sensor was fabricated using the graphene-coated Cu foils by applying the MEMS process and reactive ion etching (RIE). Then, the sensor was transferred onto a polydimethysiloxane (PDMS) substrate. Tree-dimensional bending test was performed to investigate the piezoresistive property of the patterned graphene nano-ribbon. It was confirmed that the highly sensitive strain sensor was obtained when the width of the nano-ribbon was thinner than 70 nm.
APA, Harvard, Vancouver, ISO, and other styles
9

Yang, Meng, Masato Ohnishi, Ken Suzuki, and Hideo Miura. "The Effect of Strain on the Electronic Properties of Graphene Nanoribbons." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39635.

Full text
Abstract:
Graphene nano-ribbons (GNRs) have great potential for the application of field effect transistors (FET). However, in the graphene transfer and semiconductor device fabrication process, due to the thermal expansion and lattice mismatch between dissimilar materials, internal stress is easily formed in GNRs, leading to the undesirable deformation. Thus, the electronic states of GNRs are usually modified, which may degrade the reliability of GNRs-based nano-devices. We investigated the effect of tensile, bending and folding deformations on the electronic states of armchair GNRs (AGNRs) based on density functional theory (DFT) calculation and found that the electronic structure of AGNRs is very sensitive to the external deformation. When a uniaxial tensile stress is applied to AGNRs with width Na = 10, the band structure is modified, leading to the change in band gap approximately from 0 eV to 1.0 eV. Due to the orbital hybridization, the band gaps of bended and folded AGNRs decrease significantly when the maximum local dihedral angle exceeds a critical value. In order to clarify the effect of external stress on the electronic conductivity of GNRs, the current through AGNRs under uniaxial tension is analyzed using a non-equilibrium Green’s function approach based on π-orbital tight-binding approximation. It is found that at a relative large ribbon length Ns = 20, the uniaxial tensile strain can modify the band gap of AGNRs, leading to the change in the electronic conductivity. Moreover, the current-strain (I-ε) relationship of AGNRs changes significantly as the change in the length of strained area.
APA, Harvard, Vancouver, ISO, and other styles
10

Hahnlen, Ryan, and Marcelo J. Dapino. "Thermomechanical Behavior of Low CTE Metal-Matrix Composites Fabricated Through Ultrasonic Additive Manufacturing." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-8254.

Full text
Abstract:
Shape memory and superelastic NiTi are often utilized for their large strain recovery and actuation properties. The objective of this research is to utilize the stresses generated by pre-strained NiTi as it is heated in order to tailor the CTE of metal-matrix composites. The composites studied consist of an Al 3003-H18 matrix with embedded NiTi ribbons fabricated through an emerging rapid prototyping process called Ultrasonic Additive Manufacturing (UAM). The thermally-induced strain of the composites is characterized and results show that the two key parameters in adjusting the effective CTE are the NiTi volume fraction and prestrain of the embedded NiTi. From the observed behavior, a constitutive composite model is developed based constitutive SMA models and strain matching composite models. Additional composites were fabricated to characterize the NiTi-Al interface through EDS and DSC. These methods were used to investigate the possibility of metallurgical bonding between the ribbon and matrix and determine interface shear strength. Interface investigation indicates that mechanical coupling is accomplished primarily through friction and the shear strength of the interface is 7.28 MPa. Finally, using the developed model, a composite was designed and fabricated to achieve a near zero CTE. The model suggests that the finished composite will have a zero CTE at a temperature of 135°C.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "String ribbon"

1

Hanoka, J. I. Continuous, Automated Manufacturing of String Ribbon Si PV Modules: Final Report, 21 May 1998 - 20 May 2001. Office of Scientific and Technical Information (OSTI), August 2001. http://dx.doi.org/10.2172/786354.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Hanoka, J. J. Continuous, Automated Manufacturing of String Ribbon Si PV Modules: Second Annual Report, 21 May 1999-20 May 2000. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/763660.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Hanoka, J. I. Innovative Approaches to Low-Cost Module Manufacturing of String Ribbon Si PV Modules; Final Subcontract Report, March 2002 - January 2005. Office of Scientific and Technical Information (OSTI), October 2005. http://dx.doi.org/10.2172/15020503.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hanoka, J. I. Innovative Approaches to Low Cost Module Manufacturing of String Ribbon Si PV Modules: First Annual Report, 27 September 2002--31 March 2003. Office of Scientific and Technical Information (OSTI), May 2004. http://dx.doi.org/10.2172/15007609.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Felton, L. Low-Cost Manufacturing of High-Efficiency, High-Reliability String Ribbon Si PV Modules: Final Subcontract Report, 24 June 2005 - 31 October 2008. Office of Scientific and Technical Information (OSTI), May 2009. http://dx.doi.org/10.2172/957351.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Hanoka, J. I. Continuous, automated manufacturing of string ribbon Si PV modules. PVMaT Phase 5A2 Subcontract: First Annual Report, 21 May 1998--20 May 1999. Office of Scientific and Technical Information (OSTI), November 1999. http://dx.doi.org/10.2172/752411.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hanoka, J. I. Innovative Approaches to Low Cost Module Manufacturing of String Ribbon Si PV Modules: Phase II, Annual Technical Progress Report, 1 April 2003--31 May 2004. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/15009940.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'String ribbon' for particular source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography