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Добірка наукової літератури з теми "Ceramic sequences"

Автор: Grafiati

Опубліковано: 10 березня 2023

Оновлено: 11 березня 2023

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Статті в журналах з теми "Ceramic sequences"

Ellingson, William A., J. Scott Steckenrider, and Thomas J. Meitzler. "Defect Detection in Ceramic Armor Using Phased Array Ultrasound." Advances in Science and Technology 65 (October 2010): 143–52. http://dx.doi.org/10.4028/www.scientific.net/ast.65.143.

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Monolithic ceramic tile is used as part of ceramic-composite armor. Rejection of individual tile that contain potential threat-defeat-reducing ―defects‖ must be accomplished in a fast and cost-effective manner. Water-immersion phased-array ultrasound using 10 MHz 128-element transducers sequenced at 32-elements has been demonstrated to quickly scan and detect 25-50 um known inclusion-type defects in individual 25 mm thick SiC tile. Further, use of similar phasedarray transducers and similar transducer-element activation sequences, has shown detection of intentional internal defects in tests of 40 cm square by 50 mm thick, multi-layered composite ceramic-armor specimens. Large changes in acoustic velocities of the various layered materials causes focusing issues of the ultrasonic wave. The use of various digital signal processing methods can be used to overcome some of these issues. The results show that use of phased array ultrasound can reliably be used for defect detection in either monolithic or composite ceramic-armor. The technology and various results are presented.

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Lavin, Lucianne. "The Windsor Ceramic Tradition in Southern New England." North American Archaeologist 8, no. 1 (July 1987): 23–40. http://dx.doi.org/10.2190/w3lm-q1jy-5ywc-5myu.

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Irving Rouse and Carlyle Smith originally reconstructed the sequences of the Windsor tradition in their studies of Connecticut and New York pottery assemblages. Since that time additional local ceramic assemblages have been described in the literature. There have been few attempts to test the validity of the Rouse/Smith sequence with this information, however. Utilizing these data and unpublished research from southern Connecticut, this article demonstrates that the Rouse/Smith construct remains a valid concept in Connecticut archaeology. The new data fit into the traditional system, elaborating and expanding the typology and sequences. The continuation of certain types and attribute classes from one stage into the next supports Rouse's and Smith's contention of great time depth for the Windsor tradition. It also suggests we should rethink our models of cultural history and cultural change.

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Pesonen, Petro, Markku Oinonen, Christian Carpelan, and Päivi Onkamo. "Early Subneolithic Ceramic Sequences in Eastern Fennoscandia—A Bayesian Approach." Radiocarbon 54, no. 3-4 (2012): 661–76. http://dx.doi.org/10.1017/s0033822200047330.

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In this contribution, we establish a radiocarbon-based chronology of early ceramic sequences in eastern Fennoscandia utilizing a Bayesian approach. The data consist of 56 individual 14C dates from charred or fermented food remains (charred crust, food residue) and birch bark tar used to seal cracks in vessels. We present the results of the models, discuss the chronological boundaries obtained, and compare the outcome with contemporary archaeological knowledge of the Subneolithic in eastern Fennoscandia. We also look at the role of charred crust δ13C values as indicators of reservoir effect present in the dates, perform some preliminary correction procedures for the dates, and discuss their effect on the chronologies.

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de Soto García, Isabel Sonsoles, María de los Reyes de Soto García, Blas Cabrera González, and Rosario García Giménez. "Archaeometry and Analysis of Ceramic Materials from Ávila (Spain): Late-Vetton Evidence." Sustainability 13, no. 11 (May 24, 2021): 5910. http://dx.doi.org/10.3390/su13115910.

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From the archaeological excavations carried out during 2019/2020 in the walled Ávila city (Spain), numerous ceramic fragments of different chronologies have appeared that have allowed us to find settlement sequences in this city that place its beginnings before Romanization. The latest interventions allow us to know that the wall of Ávila has a Roman origin, and it was developed on an indigenous nucleus from the 1st century BC that received the Romanizing influence during the 1st century AD. In addition, it was possible to establish that the materials used for their preparation are consistent with the materials of the geological environment, which suggests a local origin. This paper presents the study of a set of ceramic samples using XRD, ICP/MS, SEM/EDX, and linescan analysis. A statistical analysis of the samples using the minor elements concentrations has suggested that even though the local origin, there were several production centers within painted ceramics that until now were always included as a single set. Finally, due to the importance of the “late-Vetton” or “late Iberic” ceramics (mid-1st century BC—middle of the 1st century AC) from the archaeological aspect, for the first time, these ceramics are studied in detail from chemical and mineralogical tests. It was discovered that these samples had been made in an oven that had not exceeded 800 °C due to the persistence of different phases after cooking.

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Callender, Rhonda L., and Andrew R. Barron. "Novel route to alumina and aluminate interlayer coatings for SiC, carbon, and Kevlart® fiber-reinforced ceramic matrix composites using carboxylate–alumoxane nanoparticles." Journal of Materials Research 15, no. 10 (October 2000): 2228–37. http://dx.doi.org/10.1557/jmr.2000.0320.

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SiC, carbon, and Kevlart® fibers were coated with carboxylate–alumoxane nanoparticles and their calcium-, lanthanum-, and yttrium-doped analogs; firing to 1400 °C formed uniform aluminate coatings. Optimum processing sequences were determined. Both carboxylate–alumoxane- and ceramic-coated fibers were examined by field emission scanning electron microscopy, microprobe analysis, and optical microscopy. Coatings produced were stable to thermal cycling under air at 1400 °C. Fiber-reinforced ceramic matrix composites were prepared and results from 3-point bend tests for carbon/Kevlar®-fabric-reinforced ceramic matrix composites (CMCs) and carbon-fiber-reinforced CMCs were determined. Flexure strength for carbon-fiber- and carbon/Kevlart®-fiber-reinforced alumina CMCs was determined.

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Ruiz-Hervias, Jesus, Axel Steuwer, Jonas Gurauskis, Thomas Buslaps, and Carmen Baudín. "Residual Strain Profiles in Alumina-Zirconia Ceramic Composites." Materials Science Forum 652 (May 2010): 57–62. http://dx.doi.org/10.4028/www.scientific.net/msf.652.57.

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Residual strain profiles were measured by synchrotron X-ray radiation in Al2O3/Y-stabilized ZrO2 (YSZ) ceramic laminates. Different stacking sequences were employed, including alternating layers containing 5 and 40 vol.% YSZ. Residual strains were found to be fairly constant within each layer; although they change at the interface between layers with different compositions. Different behaviour is observed for the strains along the in-plane and normal directions.

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Earle, Timothy, Attila Kreiter, Carla Klehm, Jeffrey Ferguson, and Magdolna Vicze. "Bronze Age Ceramic Economy: The Benta Valley, Hungary." European Journal of Archaeology 14, no. 3 (2011): 419–40. http://dx.doi.org/10.1179/146195711798356746.

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We describe the Bronze Age ceramic economy of the Benta Valley in Hungary. In the Bronze Age, long-distance trade in metals, metal objects, and other specialty items became central to expansive prestige goods exchange through Europe. Was that exchange in wealth, however, linked to broader developments of an integrated market system? The beginnings of market systems in prehistory are poorly understood. We suggest a means to investigate marketing by studying the changing ceramic economy of a region, rather than at a single site. Analysis of the ceramic inventory collected as part of the Benta Valley Project strongly suggests that, although ceramic production was quite sophisticated and probably specialized, exchange was highly localized (mostly within 10 km) and conducted through personalized community networks. Our ceramic study used three progressively finer-scaled analyses: inventorying ceramic forms and decoration to evaluate consumption patterns, petrographic analysis to describe manufacturing sequences, and instrumental neutron activation analysis (INAA) to describe exchange. We conclude that, based on present evidence, market systems had not developed in Hungary during the Bronze Age.

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McClure, Sarah B., Emil Podrug, Andrew M. T. Moore, Brendan J. Culleton, and Douglas J. Kennett. "AMS 14C Chronology and Ceramic Sequences of Early Farmers in the Eastern Adriatic." Radiocarbon 56, no. 3 (2014): 1019–38. http://dx.doi.org/10.2458/56.17918.

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The eastern Adriatic is a key area for understanding the mechanisms and effects of the spread of agriculture. This article presents an accelerator mass spectrometry (AMS) radiocarbon chronology for the introduction and subsequent development of farming villages on the eastern shore of the Adriatic (∼6000–1700 cal BC) and evaluates this in comparison with the established pottery chronology based on stylistic data from Pokrovnik (Drniš) on the Dalmatian coast of Croatia. Models for the spread of agriculture rely heavily on changing pottery styles to define cultural groups and trace geographic relationships. Based on AMS 14C dates presented here, Impressed Wares first appear in central Dalmatia by 6000 cal BC and persist until 5300 cal BC, well into what is generally termed the Middle Neolithic. Similarly, a typical Middle Neolithic ware, figulina, appeared earlier than anticipated. These findings stand in contrast to cave and rockshelter assemblages in the eastern Adriatic, but mirror assemblages from farming villages on the Italian Adriatic coast. This study argues that the similarities in ceramic assemblage composition and change through time may have less to do with direct contacts between areas, but more with the nature of ceramic production and consumption at village sites in general. These data shed light on the limitations of regional ceramic chronologies in the eastern Adriatic and highlight the necessity for systematic expansion of 14C chronologies to address the social, economic, and ecological relevance of early farming in the Adriatic for the spread of agriculture in Europe and the Mediterranean.

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Niemczycki, Mary Ann Palmer. "The Genesee Connection: The Origins of Iroquois Culture in West-Central New York." North American Archaeologist 7, no. 1 (July 1986): 15–44. http://dx.doi.org/10.2190/gp1m-x2xd-1wf6-ej77.

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The Genesee Valley has long been recognized as a center of Iroquois development, but the connection between Owasco sites in the Genesee and Iroquois sequences in the adjacent regions has never been adequately demonstrated. Attempts to identify transitional Owasco-Iroquois sites in this region have been hampered by the use of diagnostic criteria based on data from eastern New York. This article examines ceramic patterns in the Genesee and establishes a regional cultural sequence based on ceramic criteria which have local diagnostic significance. This sequence reveals the transition from Owasco to Iroquois culture begins in the Genesee with a sudden influx of Ontario Iroquois ceramic traits from the west ca. 1250 A.D. This Owasco-Ontario Iroquois connection in the Genesee negates certain assumptions regarding Iroquois origins and alters our current concept of in situ development.

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Smyth, Michael P. "Before the Florescence." Ancient Mesoamerica 9, no. 1 (1998): 137–50. http://dx.doi.org/10.1017/s0956536100001905.

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AbstractThe period preceding the Terminal Classic florescence in the Puuc region of Yucatan, Mexico has not received adequate research attention. Recent comprehensive site survey and excavation at Chac II (Chac) are exploring Puuc origins and have begun to redress the lack of chronological understanding regarding the region by independently linking architectural styles to ceramic sequences via a program of absolute dating. Results to date suggest that Chac was a significant Early Classic center (a.d.300–600) that also experienced a major Late Classic (a.d.600–800) occupation. Multiple lines of chronological evidence, including buildings with a mix of early architectural styles and associated pre-Cehpech and Cehpech ceramics (a.d.800–1000) within sealed architectural and stratigraphic contexts, suggest a period of architectural transition and the antecedents of Cehpech ceramics dating to the sixth century. These new chronological data and associated evidence for foreign contacts perhaps reaching to central Mexico argue for the assignment of a Middle Classic period (a.d.500–700) to the region, with broad evolutionary implications for Puuc origins and pan-Mesoamerican contacts.

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Більше джерел

Дисертації з теми "Ceramic sequences"

McIlfatrick, Orlene. "Iron Age pottery of northern and western mainland Scotland and the Small Isles during the Long Iron Age : typology and aspects of ceramic social narrative." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/17901.

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The extensive collection of Iron Age pottery from antiquarian investigations of Atlantic Roundhouse sites in Caithness, Sutherland and the Small Isles (Inner Hebrides) provided an ideal opportunity to address several gaps in the academic understanding of pottery sequences outwith the Western Isles (Outer Hebrides). Until now no work of this kind for Caithness or Sutherland has been conducted, and the material culture of Skye and the Inner Hebrides has been subsumed largely into the broader sequences of their more westerly neighbours. The aim of the thesis is twofold. Firstly, to establish pottery sequences for three sub-regions of Atlantic Scotland; Northern Mainland, Western Mainland and Skye and Small Isles, using both antiquarian material and pottery from recent excavations. This comprises the first five chapters of the thesis. And secondly, within the following three chapters, utilizing two pieces of experimental research and a series of case studies, the author explores the social narrative of the ceramic assemblage, ultimately to better understand technological and cultural aspects of pot making and use.

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Burger, Paul Henry. "A formative ceramic sequence of coastal socunusco." Thesis, California State University, Long Beach, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1605183.

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Excavations in Coastal Soconusco, as part of Proyecto Arqueologico Costa del Soconusco (PACS) from 2011 through 2013 have produced tens of thousands of ceramic sherds. Analysis of these ceramics by way of comparative typology, and carbon 14 dating has produced five distinct complexes spanning nearly 2,000 years. The earliest occupation is from about 1600 BC. In about AD 200, Formative Period activity in the area ceases. This finding is in agreement with the other investigations of other nearby archaeological sites, and the population decline in Izapa, a major formative period population center about 35 kilometers from the PACS study area.

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Mendoza, Martínez Edison. "A Paracas Ceramic Sequence From Pallauca, Vilcashuamán-Ayacucho." Pontificia Universidad Católica del Perú, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/113532.

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This article presents the results of excavations carried out at the Formative Period site of Pallaucha, located south of Ayacucho, in the basin of the Pampas River. Until recently, Ayacucho was considered a minor area during the Formative Period; however, this idea could change thanks with the discovery of complex architecture associated to cultural materials coming from different area; one of them the South Coast. Three ceramic phases were identified during excavations at Pallaucha, which suggests a close relationship between this site and the South Coast. In this paper we describe the associated contexts.
El presente artículo expone los resultados obtenidos de las excavaciones en el sitio del Periodo Formativo Pallaucha, ubicado al sur de Ayacucho, en la cuenca del río Pampas. Hasta hace pocos años, Ayacucho se consideraba como un área sin mucha importancia durante el Periodo Formativo; sin embargo, las últimas evidencias podrían cambiar esa imagen, ya se ha encontrado arquitectura monumental compleja asociada a material cultural procedente de diversas áreas; una de ellas es la Costa Sur. Materiales procedentes de esta parte de la costa peruana son importantes, no solo porque la costa de Paracas se halla relativamente cerca de Ayacucho, sino porque aparecen en todos los sitios del Periodo Formativo. Durantelas excavaciones en Pallaucha, se ha encontrado secuencia de tres fases de cerámica Paracas, lo que sugiere relaciones estrechas con la Costa Sur. En este trabajo, describiremos sus contextos asociados.

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Bourgeois, Vincent Gerald Jean. "A regional pre-contact ceramic sequence for the Saint John River Valley." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ46235.pdf.

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Bebber, Michelle Rae. "UNDERSTANDING TEMPER SELECTION IN THE PREHISTORIC CERAMIC SEQUENCE OF THE SCIOTO RIVER VALLEY, ROSS COUNTY, OHIO (500 B.C. – AD 1400)." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1479821741762486.

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Bond-Freeman, Tara. "The Maya preclassic ceramic sequence at the site of Ek Balam, Yucatan, Mexico." Ann Arbor, Mich. : ProQuest, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3288942.

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Thesis (Ph.D. in Anthropology)--S.M.U., 2007.
Title from PDF title page (viewed Nov. 19, 2009). Source: Dissertation Abstracts International, Volume: 68-11, Section: A, page: 4748. Adviser: David Freidel. Includes bibliographical references.

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Chicoine, David. "Chronology and Sequences at Huambacho, Nepeña Valley, Coastal Áncash." Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/113303.

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With the objective of refining regional chronologies in the lower portion of Nepeña Valley, coastal Áncash, this article examines sequential data from architecture and ceramic contexts at the site of Huambacho. Recent investigations at the Early Horizon center of Huambacho have brought evidence to explore the emergence and development of a regional cultural tradition in the lower portions of the north-central coast of Perú, characterized by a typical architectural design of interior colonnade. This contribution reviews architectural and material elements of this tradition, its regional distribution, and excavation from stratified deposits. Data from building sequences, ceramics, and radiocarbon measurements are analyzed in light of previous interpretive frameworks. Results suggest the development of a distinct cultural tradition encompassing the lower portions of coastal Áncash and contemporary with a multitude of ceramic styles previously interpreted as successive chronological phases.
Este artículo examina datos secuenciales de contextos arquitectónicos y cerámicos del sitio de Huambacho con el objetivo de refinar las cronologías regionales en la parte baja del valle de Nepeña, costa de Áncash, durante el primer milenio a.C. Las recientes investigaciones en el centro del Horizonte Temprano de Huambacho han brindado indicios para explorar el surgimiento y el desarrollo de una tradición cultural regional que se caracteriza por un diseño típico de columnatas interiores. Esta contribución revisa los elementos arquitectónicos y materiales de esta tradición, su distribución regional y excavación en contextos estratificados. Los datos de las secuencias constructivas, la cerámica y las mediciones radiocarbónicas son analizados a la luz de los marcos interpretativos previos. Los resultados sugieren el desarrollo de una tradición cultural distinta, que se distribuye en las partes bajas de la costa de Áncash y fue contemporánea con una diversidad de estilos cerámicos previamente interpretados como fases cronológicas sucesivas.

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Zuse, Silvana. "Os Guarani e a Redução Jesuítica: tradição e mudança técnica na cadeia operatória de confecção dos artefatos cerâmicos do sítio Pedra Grande e entorno." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/71/71131/tde-12082009-154227/.

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Nesse trabalho buscou-se compreender como ocorreu a ocupação da Pedra Grande e o entorno, na região central do estado do Rio Grande do Sul, pelos Guarani desde o período inicial até o momento do contato, quando estes são inseridos em uma Redução Jesuítico-Guarani no início do século XVII. Com ênfase no estudo das escolhas técnicas inseridas na cadeia operatória de confecção dos artefatos cerâmicos, buscou-se perceber as permanências e as mudanças técnicas ocorridas a partir do contato nas diferentes etapas de sua confecção em relação a: a aquisição da argila, tratamento da pasta, técnicas de confecção, forma do artefato, acabamento de superfície e queima, quando as vasilhas estão prontas ao uso. Foram analisadas as coleções cerâmicas do sítio Ibm 4 Pedra Grande, onde se instalou a Redução, em comparação com os vasilhames do sítio Ibm 14 Rodolfo Mariano pertencentes a um contexto funerário datado do século XI da nossa era. A percepção da continuidade e da mudança técnica se deu pelas recorrências e variabilidades na cultura material, percebidas através de atributos técnicos aplicados a cada fragmento de artefato e com auxílio de análises de Microscopia Óptica, Fluorescência de Raios X e Difratometria de Raios X. Dessa forma, buscou-se compreender quais mudanças técnicas ocorreram inseridas num conjunto maior de transformações de todos os aspectos da cultura dentro de uma totalidade social. No momento do contato com os europeus, os Guarani se deparam com uma nova situação diferente da tradicional, em que novos artefatos e conhecimentos técnicos lhe são apresentados. Percebeu-se que dentro destas possibilidades de mudanças, os Guarani optaram por adotar algumas características técnicas novas e rejeitar outras, produzindo algumas mudanças técnicas perceptíveis no estudo da cultura material, e é sobre esse processo que procurou-se refletir na finalização do trabalho.
This work aimed at finding out how the occupation of Pedra Grande site, located at the central region of Rio Grande do Sul state, as well its surroundings, by the Guarani people, happened since the beginning of the settlement until the moment of first contact, when they were inserted into a Jesuit-Guarani settlement in the beginning of the XVII century. Focusing on the technological choices inserted in the Operation Sequence of ceramic artifact confection, one tried to notice the permanent or changed technological choices occurred from the first contact throughout the different stages of its confection considering: clay acquisition, paste treatment, techniques of manufacture, artifact forming and shaping, surface finishing, and firing, and vessels ready to be used. One analyzed the pottery collection of: Ibm 4 Pedra Grande site, where the settlement got place, in comparison to the vessels of Ibm 14 Rodolfo Mariano site that consists of a funerary context dated from the XI century from our era. The technological continuity and changing perception was possible due to the recurrence and variability on the material culture, noticed through technological attributes applied on each artifact fragment, assisted by Optical Microscopy, X Ray Fluorescence (XRF) and also X Ray Diffractometry. In this way, one searched about what technological changes occurred inserted into a bigger group of cultural transformations in a social totality. When in contact with Europeans, the Guarani people face a new situation if compared to the traditional one, in which new artifacts as well as technological knowledge are presented to them. It was noticed that among those possible changes, the Guarani people opted by adopting some of the new techniques but rejecting others, producing some of the technological changes noticed on the material culture study, which guided the final reflection in this work.

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ORSI, VALENTINA. "Persistenze e discontinuita' nella tradizione ceramica dell'Alta Mesopotamia tra la fine del Terzo e l'inizio del Secondo millennio a.C.. il contributo degli scavi di Tell Barri e Tell Mozan (Siria)." Doctoral thesis, 2010. http://hdl.handle.net/2158/560486.

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Il periodo tra la fine del III e l'inizio del II millennio a.C. in Alta Mesopotamia rappresenta nella storia e nell'archeologia del Vicino Oriente Antico una 'Media Aetas', un'età oscura tra la fioritura delle culture urbane del Bronzo Antico a metà del III millennio a.C. e lo sviluppo degli stati amorrei del Bronzo Medio, alla fine del XIX sec. a.C. L'identificazione nella sequenza archeologica di Tell Barri, l'antica città di Kahat, dell'orizzonte ceramico coevo alla 'crisi urbana' che precede la diffusione della ceramica dipinta del Khabur, associata ad un nuovo fenomeno di sedentarizzazione, permette di ridefinire la cronologia degli eventi nella regione, e di delineare i processi di interazione tra le diverse realtà sociali alto mesopotamiche in quella fase formativa che sta alla base del successivo sviluppo culturale di II millennio a.C.

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CARRATONI, LOREDANA. "Studio archeometrico di ceramiche. Sequenze analitiche per una diagnostica mirata dei manufatti ceramici." Doctoral thesis, 2016. http://hdl.handle.net/11573/908674.

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Il lavoro di dottorato è stato finalizzato alla proposta di cinque linee guida per indagare la composizione, la temperatura di cottura, la provenienza e la natura di residui o di strati superficiali di rivestimento di manufatti ceramici archeologici, al fine di perseguire una diagnostica mirata di questi materiali. La ricerca è stata quindi volta all’identificazione delle migliori sequenze analitiche per la caratterizzazione dei materiali ceramici, anche tenendo conto di differenze derivanti ad esempio dalla tipologia e dall’origine dei manufatti stessi. L’attività di ricerca è stata condotta su una selezione di 203 campioni, caratterizzati da una diversa provenienza, datazione e, quando possibile, anche da una differente funzione d’uso, rappresentativi quindi di differenti tipologie di impasto e tecnologie. I frammenti di ceramica archeologica sono stati sottoposti ad analisi con molteplici tecniche analitiche al fine di rispondere a domande particolari come la determinazione della composizione chimica, petrografica e mineralogica degli impasti, oppure la definizione del colore, della temperatura di cottura e, nel caso ad esempio dei campioni di maiolica, della struttura e della composizione degli strati di rivestimento. Metodiche tradizionali e non sono state applicate al fine di valutare la qualità dei risultati sperimentali. Tra le tecniche di recente introduzione, la distribuzione della dimensione dei grani è stata determinata attraverso l’analisi di immagine, mentre per la porosità degli impasti è stato possibile confrontare i risultati ottenuti mediante analisi di immagine e quelli derivanti dalla tradizionale porosimetria a intrusione di mercurio. Lo studio dei campioni di maiolica ha permesso, inoltre, di verificare l’efficacia di tecniche non distruttive, come la fluorescenza a raggi X portatile, e di proporre l’uso della riflettografia infrarossa in falsi colori (IRFC) per lo studio dei rivestimenti dipinti. I risultati ottenuti per gli strati di smalto analizzati sono stati confermati anche attraverso l’analisi SEM-EDS e di spettroscopia micro-Raman. I dati acquisiti durante la ricerca sono stati elaborati statisticamente e gestiti attraverso la creazione di un database relazionale. Attraverso il confronto dei dati ottenuti con diverse metodiche su campioni aventi caratteristiche differenti, è stato così possibile evidenziare le migliori procedure analitiche applicabili per rispondere a particolari quesiti connessi con lo studio dei materiali ceramici archeologici. Le informazioni ottenute hanno permesso di proporre cinque linee guida volte ad affrontare specifici aspetti dello studio di questi materiali.
Five guide lines were established to define the composition, the firing temperature, the provenance, and the nature of the finishing layers and of the organic residues of the ceramic artifacts, in order to obtain focused diagnostic processes. The research is designed to identify the most suitable analytical procedures to characterize the archeological ceramic materials, according to the peculiar typology and origin of the artifacts. An accurate research has been done to select samples with different diagnostic question, provenance, chronology and, when possible, different use as well. A total of 203 fragments of historical pottery have been collected and submitted to different analytical techniques in order to answer each specific peculiarity: chemical, mineralogical and petrographic composition, as well as the paste average color, the firing temperature and, in the case of majolica, the structure and composition of the finishing layers. Traditional and new tests have been applied in order to evaluate the quality of the experimental results. Grain size distribution was calculated by performing image analysis on thin sections, while porosity was investigated both by image analysis and mercury porosimetry in order to compare the experimental data and to define the significance of the image analysis to characterize the body structure. Studying the majolica painted samples allowed verifying the high efficacy of the combined not destructive analytical technologies XRF and IRFC reflectography, that furnished the best results to assess the composition of the finishing layers, with peculiar regards to the pigments and the glaze covering. The obtained experimental results were also confirmed by SEM-EDS and micro-Raman analyses. The comparison of the data obtained with analytical methodologies based on different physical and chemical principles, makes it possible identify the most suitable analytical procedure to get a precise technological response in accordance with archaeological and historical information. All collected information have been used to define targeted guide lines. Within this approach the significant morphological and compositional results have been treated in statistical data management and it has been possible to realize for the first time an open and flexible database that may be interrogated according to different and specific questions.

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Книги з теми "Ceramic sequences"

Donne, Bryant Douglas, Clark John E, and Cheetham David, eds. Ceramic sequence of the upper Grijalva Region, Chiapas, Mexico. Provo, Utah: New World Archaeological Foundation, Brigham Young University, 2005.

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Smith, Robert Eliot. A ceramic sequence from the Pyramid of the Sun, Teotihuacan, Mexico. Cambridge, Mass., U.S.A: Peabody Museum of Archaeology and Ethnology, Harvard, University, 1987.

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Iron age migrations: The ceramic sequence in southern Zambia : excavations at Gundu and Ndonde. Johannesburg: Witwatersrand University Press, 1989.

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Roberts, Frank H. H. The ceramic sequence in the Chaco Canyon, New Mexico, and its relation to the cultures of the San Juan Basin. New York: Garland Pub., 1991.

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The pots and potters of Assyria: Technology and organisation of production, ceramic sequence and vessel function at late Bronze Age, Tell Sabi Abyad, Syria. Turnhout: Brepols, 2008.

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L'Alto Tigri nelle età del Bronzo antico e medio: Siti, sequenze e ceramiche rosso-brune tra fine III e inizio II mill. a.C. Firenze, Italy: Firenze University Press, 2016.

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Ökse, A. Tuba. The Early Bronze Age in Southeastern Anatolia. Edited by Gregory McMahon and Sharon Steadman. Oxford University Press, 2012. http://dx.doi.org/10.1093/oxfordhb/9780195376142.013.0011.

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This article presents data on the Early Bronze Age (EBA) of southeastern Anatolia. The EBA chronology of southeastern Anatolia is parallel to northern Syrian chronologies. The traditional EBA I-III chronology of Anatolia is based on the Tarsus sequence and the EBA I-IV chronology of northwestern Syria on the Amuq and Tell Mardikh sequences. The distribution of ceramic groups and special vessel types reflects geographical and chronological differences throughout the third millennium BCE. The relative chronologies of geographical zones and individual periods are based mainly on ceramic distributions; absolute dates obtained from radiocarbon analyses are rare.

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Vacca, Agnese. Early Bronze Age III and IVA1 at Tell Mardikh/Ebla and Its Region: Stratigraphic and Ceramic Sequences. Harrassowitz, 2020.

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Ceramic Sequence of Tikal. University Museum Publications, 2019.

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Callaghan, Michael G., and Nina Neivens de Estrada. Ceramic Sequence of the Holmul Region, Guatemala. University of Arizona Press, 2016.

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Частини книг з теми "Ceramic sequences"

Sun, W. Y., P. A. Walls, and D. P. Thompson. "Reaction Sequences in the Preparation of Sialon Ceramics." In Non-Oxide Technical and Engineering Ceramics, 105–17. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-3423-8_8.

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Guan, Kang, Laifei Cheng, Qingfeng Zeng, Yunfang Liu, Haitao Ren, and Litong Zhang. "The Effects of Nesting and Stacking Sequence on the Structural and Gas Transport Properties of Plain Woven Composites During Chemical Vapor Infiltration Process." In Ceramic Transactions Series, 15–22. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118932995.ch2.

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Dickerson, Matthew B., Ye Cai, Kenneth H. Sandhage, Rajesh R. Naik, and Moriey O. Stone. "Sequence Specific Morphological Control Over the Formation of Germanium Oxide During Peptide Mediated Synthesis." In Advances in Bioceramics and Biocomposites: Ceramic Engineering and Science Proceedings, Volume 26, Number 6, 25–32. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470291269.ch4.

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Arnold, Dean E., Yumi Park Huntington, and Johanna Minich. "A New Approach to Pre-Columbian Pottery." In Ceramics of Ancient America, 1–24. University Press of Florida, 2018. http://dx.doi.org/10.5744/florida/9780813056067.003.0001.

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Clay is the most malleable raw material used by many cultures across the world. Its fired product, ceramics, are commonly studied by archaeologists, art historians, and anthropologists. This introductory chapter describes the various perspectives and how these disciplines study the ceramics of ancient America and the cultures that produced them. Bringing together a variety of approaches and terminologies used by these three disciplines, this chapter reveals the complementarity of the differences of these varied approaches. Since ceramic objects constitute part of the history and identity of a specific group of people, it is also important to consider the archaeological ethics of studying Pre-Columbian ceramics, especially how archaeologists and art historians perform authentication and respect cultural heritage. Summarizing the unique properties of ceramics, the operational sequences of their production, and considerations of both human and material agency, the chapter also shows how recognizing various ceramic production sequences (chaîn opératoire) enables reconstruction of ancient societies through different disciplines. This multidisciplinary approach provides a more comprehensive understanding of ceramics than possible with any single discipline.

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Friberg, Christina M. "Ceramic Traditions." In The Making of Mississippian Tradition, 96–140. University Press of Florida, 2020. http://dx.doi.org/10.5744/florida/9781683401612.003.0005.

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This chapter presents an analysis of ceramic artifacts collected during recent Audrey site excavations. Jar rims are seriated using established chronological sequences from Cahokia; these patterns are considered in conjunction with AMS dates from four features to date the site to Cahokia’s early Stirling phase (AD 1100–1150). An interregional comparative analysis of ceramic temper, surface finish, orifice diameter, and vessel class from the Audrey site, Greater Cahokia, and northern hinterland regions is conducted to determine the degree to which Audrey inhabitants adopted Cahokian potting practices and/or retained traditional Woodland-era potting techniques and foodways. Finally, the presence of exotic, non-Cahokian pottery at Audrey and northern hinterland sites is considered as potential evidence for interregional exchange and interaction among northern groups.

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"8. Argument: Ceramic sequences and social processes." In Yutopian, 45–47. University of Texas Press, 2015. http://dx.doi.org/10.7560/772014-011.

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Volta, Beniamino, Nancy Peniche May, and Geoffrey E. Braswell. "The Archaeology of Chichen Itza." In Landscapes of the Itza. University Press of Florida, 2017. http://dx.doi.org/10.5744/florida/9780813054964.003.0002.

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This chapter is a comprehensive overview of research at Chichen Itza written from an archaeological perspective. The authors present a historical review of excavations, settlement pattern studies, the interpretation of ethnohistoric sources, and the decipherment of hieroglyphic texts. They also discuss some of the main points of contention in Chichen Itza archaeology: its ceramic and architectural sequences, the timing of the end of construction, and the question of whether to consider it a Terminal Classic or Postclassic site. Based upon a careful consideration of multiple lines of evidence—including new data about ceramics, stratigraphy, and paleoclimatology—they conclude by offering a succinct picture of the urban growth of Chichen Itza, the development of its artistic and architectural programs, and its interactions with surrounding sites.

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Beekman, Christopher S. "The Early Segment of the Chronological Sequence at Los Guachimontones." In Ancient West Mexicos, 62–102. University Press of Florida, 2020. http://dx.doi.org/10.5744/florida/9780813066349.003.0003.

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Los Guachimontones is the largest archaeological site in the Tequila Valleys of central Jalisco and among the most extensively studied sites in the region. Nonetheless, the site lacks an established ceramic sequence, complicating efforts to understand the architectural and habitational chronology at the paramount site of the Teuchitlán tradition. This chapter synthesizes data from over 20 years of survey and excavation, presenting the totality of evidence derived from radiocarbon dates, ceramics and their distribution, figure and figurine debris, burials and offerings, and stratigraphic pits. The chapter concludes by summarizing the results of the analyses to propose a much-needed model of the architectural stratigraphy and occupational history of Los Guachimontones.

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"Nubia and its cultural sequences between the 8th and the 3rd millennium BC:." In Ceramic manufacturing techniques and cultural traditions in Nubia from the 8th to the 3rd millennium BC, 5–24. Archaeopress Publishing Ltd, 2017. http://dx.doi.org/10.2307/j.ctv1zcm17x.6.

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Farmer, James. "Naturalism and Contrapposto in the Ceramics of Ancient Ecuador." In Ceramics of Ancient America, 62–94. University Press of Florida, 2018. http://dx.doi.org/10.5744/florida/9780813056067.003.0003.

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In chapter 3, James Framer investigates a pattern of artistic evolution in depictions of the human figure in a series of figurative ceramic styles originating in ancient coastal Ecuador. Between c.3000 BCE and c.500 CE, a chronological sequence of five distinct but connected ceramic styles emerged in the region: Valdivia, Machalilla, Chorrera, Jamacoaque, and La Tolita. Close scrutiny of changes in the rendering the human figure in this sequence reflect aesthetic and philosophical changes in the intent of both patrons and artists. Comparisons are noted between ancient Ecuadorian and certain other ancient American figurative ceramics and the development of the Classic human figure type in Greek art. This essay argues that certain specific artistic techniques and conventions employed in Classic Greek art, and by which the Classic tradition has long been defined, were also being developed independently by ancient American ceramicists. Contrapposto, high naturalism, canonical proportion and ratios, and highly animated postures and gestures, all seem to have also been developed and applied in the ancient Americas, perhaps reflecting the emergence of a distinct form of ancient American humanistic philosophy, separate but parallel to the more famous Classical tradition from the Old World.

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Тези доповідей конференцій з теми "Ceramic sequences"

Longbiao, Li. "Thermomechanical Fatigue of Ceramic Matrix Composites." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90067.

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Abstract In this paper, the thermomechanical fatigue (TMF) of fiber-reinforced ceramic-matrix composites (CMCs) is investigated using the hysteresis-based damage parameter. The micro stress field of the damaged CMCs of matrix cracking and fiber/matrix interface debonding is obtained considering the temperature-dependent fiber/matrix interface shear stress. The fiber/matrix interface debonded length and unloading/reloading slip length are determined using the fracture mechanics approach. Based on the damage mechanisms of fiber sliding relative to the matrix in the interface debonded region, the TMF hysteresis loops models and hysteresis-based damage parameters are developed for the partially and completely debonding to analyze the damage evolution inside of fiber-reinforced CMCs. The effects of temperature, phase angle and loading sequences on the damage development of SiC/SiC composite are discussed. When TMF temperature range increases, the fatigue hysteresis loops area, residual strain increase, and the hysteresis modulus decreases, due to the increase of the fiber/matrix interface slip length. Under TMF loading, the phase angle affects the interface debonding and sliding range, and the hysteresis loops shape, location and area of the fiber-reinforced CMCs. The experimental TMF damage evolution of 2D SiC/SiC and cross-ply SiC/MAS composites are predicted.

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Choi, Sung R., and John P. Gyekenyesi. "Slow Crack Growth Analysis of Advanced Structural Ceramics Under Combined Loading Conditions — Damage Assessment in Life Prediction Testing." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0062.

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Slow crack growth analysis was performed with three different loading histories including constant stress-rate/constant stress-rate testing (Case I loading), constant stress/constant stress-rate testing (Case II loading), and cyclic stress/constant stress-rate testing (Case III loading). Strength degradation due to slow crack growth and/or damage accumulation was determined numerically as a function of percentage of interruption time between the two loading sequences for a given loading history. The numerical solutions were examined with the experimental data determined at elevated temperatures using four different advanced ceramic materials, two silicon nitrides, one silicon carbide and one alumina for the Case I loading history, and alumina for the Case II loading history. The numerical solutions were in reasonable agreement with the experimental data, indicating that notwithstanding some degree of creep deformation presented for some test materials slow crack growth was a governing mechanism associated with failure for all the test materials.

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Berke, Ryan B., and Mark E. Walter. "Mechanical Characterization and Modeling of Corrugated Metal Foams for SOFC Applications." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64472.

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Planar solid oxide fuel cells (SOFCs) are made up of repeating sequences of thin layers of cermet electrodes, ceramic electrolytes, seals, and current-collectors. For electro-chemical reasons it is best to keep the electrolyte layers as thin as possible. However, for electrolyte-supported cells, the thin electrolytes are more susceptible to damage during production, assembly, and operation. The latest-generation electrolyte-supported SOFCs feature metallic foam current-collectors which relay current between the energy-producing materials and the rest of the circuit. These foams are stamped into a corrugated shape which is intended to reduce the compressive loads which are transferred through the stack onto the brittle electrolyte, but the mechanical behavior of the foams remain to be fully understood. Characterization of the corrugated metal foams consists of comparison of load-vs.-displacement behavior between experimentally measured compression data and a single-component finite element model which isolates the foam from the rest of the stack. Mechanical properties of the foam are found using an iterative approach, in which the material properties used as inputs to the model are changed until the load-displacement data best agrees with experiments. The model explores the influence of elastic and plastic properties in combination with and without friction. Thus obtained, the properties can then be used in a stack model to determine which parameters can best reduce the demands on the electrolyte without sacrificing electrochemical performance.

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Alam, Shah, and Samhith Shakar. "Ballistic Performance of Sandwich Composite Armor System." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23840.

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Abstract This study focused on the design, modelling and the analysis of the dynamic response of composite armor system, constructed with Kevlar 29 as front skin, Alumina-ceramic filled in x shaped corrugated structure as core and bottom skin Kevlar 29 and T800S, in terms of residual velocity, energy absorption capacity and limiting velocity. The core cell size, height, thickness, skin thickness, etc., will be varied to get their influence on the impact resistance. The design parameter will be investigated for the sandwich composite armor with various configurations and stacking sequence of Alumina Ceramics, Kevlar 29 and T800S. The sandwich typically consists of front plate, core and backing plate, which will be impacted at different velocities starting at 100m/s till significant armor penetration. The ballistic limit velocity (V50) will be determined from the analysis. The non-linear explicit dynamic analysis and simulation results computed using the software ABAQUS will be validated by experiment. From the data obtained it can be suggested which composite armor has improved impact resistance and performance.

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Ballarini, Roberto, and Shamim Ahmed. "Local-Global Analysis of Crack Growth in Continuously Reinforced Ceramic Matrix Composites." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-138.

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This paper describes the development of a mathematical model for predicting the strength and micro-mechanical failure characteristics of continuously reinforced ceramic matrix composites. The local-global analysis models the vicinity of a propagating crack tip as a local heterogeneous region (LHR) consisting of spring-like representation of the matrix, fibers and interfaces. This region is embedded in an anisotropic continuum (representing the bulk composite) which is modeled by conventional finite elements. Parametric studies are conducted to investigate the effects of LHR size, component properties, interface conditions, etc. on the strength and sequence of the failure processes in the unidirectional composite system. The results are compared with those predicted by the models developed by Marshall et al. (1985) and by Budiansky et al. (1986).

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Kerans, Ronald J. "Damage Development, Toughening, and the Design and Performance of Ceramic Composite Systems." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0663.

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Abstract The remarkable toughening effect resulting from proper combination of three brittle phases in the form of fiber, coating and matrix is a consequence of a particular sequence in the development of damage It is understood that there are both beneficial and detrimental ways for damage to develop; hence, successful design of composites requires the management of the progression of such damage. The conception and design of alternative crack deflecting coating systems is greatly facilitated by, if not dependent upon, understanding such details. In addition, the same damage that is beneficial to toughness in one type of loading may be detrimental to other properties. The development of sufficient understanding of the benefits and penalties is necessary to design such materials with well chosen engineering compromises.

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Bouillon, Eric P., Patrick C. Spriet, Georges Habarou, Caroline Louchet, Thibault Arnold, Greg C. Ojard, David T. Feindel, Charles P. Logan, Kimberly Rogers, and Doug P. Stetson. "Engine Test and Post Engine Test Characterization of Self-Sealing Ceramic Matrix Composites for Nozzle Applications in Gas Turbine Engines." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53976.

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The advancement of self-sealing ceramic matrix composites offers durability improvements in hot section components of gas turbine engines. These durability improvements come with no need for internal cooling and with reduced weight. Building on past material efforts, ceramic matrix composites based on either a carbon fiber or a SiC fiber with a sequenced self-sealing matrix have been developed for gas turbine applications. The specific application being pursued on this effort is an F100-PW-229 nozzle seal. Full design life ground engine testing has been accomplished with both material systems. The ground testing has demonstrated a significant durability improvement from the baseline metal design. Residual properties are being determined for both systems by extracting tensile and microstructural coupons from the ceramic matrix composite seal. Nondestructive interrogation showed no material degradation and was used as a guide in setting cutting diagrams. The results from this effort will be presented along with documentation from flight test efforts.

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Kim, Ran Y., and G. P. Tandon. "In Situ Observation and Modeling of Damage Modes in Cross-Ply Ceramic Matrix Composites." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0699.

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Abstract Ceramic-matrix composites generally exhibit matrix and/or interface damage well before final failure because of the low strain capability of the brittle matrix and weak interfacial bonding. These damages have a significant influence on the stress-strain behavior as well as on the ultimate strength of the composite. The failure process in a multidirectional laminate is further complicated by its dependence on ply orientations and stacking sequence Reported in this paper are the results of both analytical and experimental investigations carried out in an attempt to understand the initiation and propagation of damage in a [0/90]3S cross-ply laminate. A glass-ceramic matrix composite reinforced with silicon carbide (Nicalon) fibers is investigated at room temperature under uniaxial tensile loading. The initiation and propagation of interfacial debonding, microcracking, and fiber breaks were observed in situ, under applied load using a specially built loading device. The observed damage modes were then incorporated into existing micromechanical models to predict the laminate stress-strain behavior and compared with the experimental measurements.

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Woo, Sung-Choong, and Nam Seo Goo. "Fully Reversed Electric Fatigue Behavior of a Piezoelectric Composite Actuator." In ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2008. http://dx.doi.org/10.1115/smasis2008-401.

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The aim of this study is to investigate fully reversed electric fatigue behavior of a piezoelectric composite actuator (PCA). For that purpose, fatigue tests with different loading conditions have been conducted and the performance degradation has been monitored. During a preset number of loading cycles, non-destructive acoustic emission (AE) tests were used for monitoring the damage evolution in real time. The displacement-cycle curves were obtained in fully reversed cyclic bending loading. The microstructures and fracture surfaces of PCA were examined to reveal their fatigue damage mechanism. The results indicated that the AE technique was applicable to fatigue damage assessment in the piezoelectric composite actuator. It was shown that the initial damage mechanism of PCAs under fully reversed electric cyclic loading originated from the transgranular fracture in the PZT ceramic layer; with increasing cycles, local intergranular cracking initiated and the either developed onto the surface of the PZT ceramic layer or propagated into the internal layer, which were some different depending on the drive frequencies and the lay-up sequence of the PCA.

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Emery, A. F. "The Concept of Retained Strength as Applied to Thermal Shocks." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93825.

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Retained Strength has been used to characterize the damage incurred by brittle materials when exposed to a thermal shock or to a sequence of thermal shocks. While it is a valid measure to qualitatively rank materials in a simplistic way, it cannot be used in any quantitative sense since it depends upon the specific thermal shock conditions and upon the type of test used to measure it. Given the current state of knowledge about fracture of brittle materials, retained strength should be considered as an artifact of a time when little was understood about fracture of brittle materials. When the residual strength of a ceramic is measured by mechanical tests subsequent to the exposure of a ceramic to a thermal shock, the isothermal test condtions must produce a stress field that is consistent with the stresses produced by the thermal shock. This paper describes the theoretical basis for retained strength and presents experimental data to show that retained strength measured from the isothermal tests cannot be used in general as an accurate measure of the thermal damage.

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