Notch Specimens
Mostrando 1-12 de 24 artigos, teses e dissertações.
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1. Effect of the Cooling Rate on the Properties of Veneer Porcelain for Zirconia Dental Prosthesis
To solve chipping of veneer porcelain in zirconia dental prosthesis it has been studied different cooling rates in firing schedules to control residual stresses generated by differences in thermal properties between the ceramics. However, cooling rates may affect the porcelain, irrespectively of interaction with zirconia. This study analyzed the effect of co
Mat. Res.. Publicado em: 07/08/2017
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2. A geometric morphometric study of sex differences in the scapula, humerus and ulna of Chaetophractus villosus (Xenarthra, Dasypodidae)
ABSTRACT Sexual differences in some of the components of the pectoral girdle and forelimb of Chaetophractus villosus (Desmarest, 1804) were investigated by means of geometric morphometrics. A total of 15 scapulae (7 males, 8 females) and 50 humeri-ulnae complexes (24 males, 26 females) were examined. No size differences were detected between sexes for any of
Iheringia, Sér. Zool.. Publicado em: 12/01/2017
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3. Assessing the Notch Sensitivity of High Strength Wires
Abstract High strength wires, which have a poor notch sensitivity performance, are currently been used on many offshore applications where high stresses without yielding are demanded. To assess these wires notch sensitivity, an integrated approach was implemented. An experimental program was conducted, through the realization of fatigue tests to obtain the f
Lat. Am. j. solids struct.. Publicado em: 2017
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4. Investigation on the Effect of Different Pre-Cracking Methods on Fracture Toughness of RT-PMMA
Abstract In this study, eight techniques including coping saw, metal slitting saw, razor blade, cubic boron nitride (CBN) disc, scoring, die-cutting and guillotining, diamond disc, and laser cutting methods were used to produce pre-cracked fracture toughness (Kc) test specimens made of poly(methyl methacrylate)/graft-acrylonitrile butadiene styrene blends. T
Lat. Am. j. solids struct.. Publicado em: 2016-11
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5. On the Processing and Properties of Clay/Polymer Nanocomposites CPNC
AbstractAn experimental investigation followed by fundamental characterization and discussion on the effect of nanoclay filler on the mechanical and fracture properties of polymer matrix was carried out. The study was carried out on clay/polymer nanocomposite made of High Density polyethylene (HDPE M40060) produced by Saudi Arabian company SABIC and montimor
Lat. Am. j. solids struct.. Publicado em: 2015-04
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6. On the Strengthening of Cement Mortar by Natural Fibers
The purpose of this work is to evaluate mechanical behavior of sisal fiber reinforced cement mortar. The composite material was produced from a mixture of sand, cement and water. Sisal fibers were added to the mixture in two different lengths. Mechanical characterization of the composite and the plain mortar was carried out using three point bend, compressio
Mat. Res.. Publicado em: 2015-02
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7. Mechanical and microstructural characterization of Nodular Cast Iron (NCI) with Niobium Additions
Nodular cast irons (NCIs) involve the inoculation and nodulization of 0.03 to 0.06wt% Magnesium, as well as the addition of Molybdenum, Chromium, Nickel, Copper and Vanadium, although the presence of Niobium is not common. The literature reports that Niobium leads to better mechanical properties of the NCIs, and recent results indicate that 0.5wt% Niobium in
Mat. Res.. Publicado em: 2014-10
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8. Experimental investigation of mixed-mode-I/II fracture in polymer mortars using digital image correlation method
The purpose of this work is to investigate experimentally the effects of mixed-mode I/II loading on the fracture behavior of polymer mortars. Three point bend beam specimens with offcenter notch were used in plane-strain fracture toughness tests. Two approaches have been simultaneously used to determine the crack opening displacements. The crack mouth openin
Lat. Am. j. solids struct.. Publicado em: 2014-03
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9. Two new species of the spider genus Alpaida (Araneae: Araneidae) from restinga areas in Brazil
Two new species of Alpaida O.P.-Cambridge, 1889 are described based on male and female specimens from seven restinga areas from northeastern to southern Brazil. Alpaida teresinha sp. nov., from Rio de Janeiro and Espírito Santo, differs from other species of the genus in the wider lobe of the conductor, the concave median apophysis and with the posterior lo
Zoologia (Curitiba). Publicado em: 2013-06
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10. Correlation between small punch and CVN impact tests for evaluation of cryogenic fracture characteristics of isothermally-aged nitrogen-containing austenitic stainless steels
The Charpy-V-notch impact test has been used routinely to evaluate the ductile-brittle behavior in steels. Likewise, the Small-Punch test has been applied to evaluate toughness properties in different materials. In this work, both tests were conducted at -196 °C on three types of austenitic stainless steels JN1, JJ1 and JK2, which were solution treated and
Materials Research. Publicado em: 06/03/2012
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11. Avaliação da influência do entalhe em corpos de prova ensaiados a baixa taxa de deformação em meio etanol
O aumento de demanda por combustíveis menos poluentes e de fontes renováveis faz com que o Etanol se destaque como uma alternativa as fontes convencionais de energia. O crescente aumento no consumo deste produto, para os próximos anos, exigirá meios de transporte e estocagem eficientes e seguros, desde os diversos produtores até os terminais de distribu
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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12. Experimental investigations on mode II fracture of concrete with crushed granite stone fine aggregate replacing sand
With a view to implement sustainability concepts (namely, use of locally available materials and industrial by-products) in the concrete construction industry, the possibility of use of crushed stone fine aggregate as replacement to river sand is explored in this paper. Towards this, tests have been carried out on concrete cubes and concrete cylinders. The e
Materials Research. Publicado em: 29/11/2011