Tensile Stress
Mostrando 1-12 de 229 artigos, teses e dissertações.
-
1. Adventitial Collagen Cross-Linking by Glutaraldehyde Reinforcing Human Saphenous Vein - Implication for Coronary Artery Bypass Grafting
ABSTRACT Introduction: A weak venous wall is one of the major reasons contributing to vein graft failure after coronary artery bypass grafting (CABG). We investigated whether adventitial collagen cross-linking by glutaraldehyde reinforces venous wall, preserving the endothelium of veins during high-pressure distention. Methods: Human saphenous veins (SVs)
Brazilian Journal of Cardiovascular Surgery. Publicado em: 2022
-
2. Effect of Suture on Mechanical Properties of Stitched Thermal Protection Sandwich
This paper investigates the tensile properties and bending performances of stitched thermal protection structure in engineering, and the effect of stitching density on mechanical properties, via a model of ceramic-aerogel stitched sandwich. With the help of ANSYS, titanium alloy bottom plate was added to the bottom surface of the thermal protection structure
Mat. Res.. Publicado em: 13/01/2020
-
3. CANTILEVER NANOBIOSENSOR BASED ON THE ENZYME UREASE FOR DETECTION OF HEAVY METALS
Abstract Cantilever nanobiosensors have emerged as an alternative to conventional methods of analysis to monitor heavy metals, which are being highlighted by detecting substances at the micro and nanoscale through the use of sensor layers. In the present study, a new cantilever nanobiosensor was developed functionalized with urease enzyme by self-assembled m
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
-
4. Impacto nas Propriedades Mecânicas e Tensões Residuais do Material ASTM A572 Grau 50 Soldado por Arco Submerso com Alívio de Tensões Térmico
Resumo O aço ASTM A572 Grau 50 é utilizado na fabricação de conjuntos soldados para aerogeradores, por este motivo, a realização de alívio de tensões é de grande importância para correção dos impactos causados pelos processos de soldagem, bem como, o conhecimento das propriedades finais obtidas com a realização deste processo. O objetivo desse
Soldag. insp.. Publicado em: 02/12/2019
-
5. Evaluation of the stiffening mechanism based on micro-sized particle inclusions in laminated composites
Rigid particles have been incorporated into laminated composites, especially to enhance their bending performance attributed to the stiffening of the matrix phase (i) and the increased interlaminar shear resistance (ii). In order to better evaluate the improvement mechanism provided by the particulate inclusions, this work investigates the incorporation of m
Mat. Res.. Publicado em: 17/10/2019
-
6. Resistência da madeira ao embutimento perpendicular às fibras: comparação de métodos de ensaio
Resumo As ligações em estruturas de madeira são os pontos com maiores concentrações de tensões. Para o dimensionamento de ligações por pinos metálicos, dois parâmetros são utilizados: a resistência ao escoamento do aço e a resistência da madeira ao embutimento. O objetivo deste trabalho foi comparar métodos de ensaio e critérios de dimensiona
Ambient. constr.. Publicado em: 03/10/2019
-
7. Influence of coupling agents on the adhesion force of dissimilar overmolded polymers: a digital image correlation analysis
ABSTRACT The increase in the technical and functional requirements of plastic items has led the development of multimaterials. To achieve a good performance in the adhesion of dissimilar materials, in this case, polypropylene and coconut fiber composites, it is fundamental to understand the phenomena related to the specific interface. This work aims to evalu
Matéria (Rio J.). Publicado em: 16/09/2019
-
8. Sustainable blends of LDPE/NR and sugarcane bagasse ashes with PE-g-MA thermomechanical relationships
RESUMO As blendas poliméricas obtidas com resíduos que antes eram chamados de lixos vêm crescendo como uma solução viável, permitindo melhorias nas propriedades mecânicas e como alternativas sustentáveis. Este trabalho relata os efeitos de misturas de polietileno de baixa densidade (PEBD) e borracha natural(NR), com cinzas de bagaço de cana-de-açú
Matéria (Rio J.). Publicado em: 16/09/2019
-
9. Influência da composição do gás de proteção nas tensões residuais de juntas de aço DP600 soldadas pelo processo GMAW
RESUMO A indústria automobilística vem investindo em novos processos de fabricação que melhoram a produtividade sem perda da qualidade. Entretanto, a presença de tensões residuais, geradas em todos os processos de fabricação, constitui um dos grandes problemas encontrados na indústria metal mecânica, pois estas podem se somar às tensões de carreg
Matéria (Rio J.). Publicado em: 16/09/2019
-
10. Fragmentation model for the tensile response of unidirectional composites based on the critical number of fiber breaks and the correction of the fiber-matrix interfacial strength.
Abstract A fragmentation model based on global load sharing (GLS) theory is developed to obtain stress-strain curves that describe the mechanical behavior of unidirectional composites. The model is named C N B + τ * because it is based on the Critical Number of Breaks model (CNB) and on the correction of the fiber matrix interfacial strength, τ *
Lat. Am. j. solids struct.. Publicado em: 15/08/2019
-
11. Dynamic Response Analysis of Geogrid Reinforced Embankment Supported by CFG Pile Structure During a High-Speed Train Operation
Abstract The performance of railroad structure has a tremendous influence on the safety and stable operation of high-speed trains. Strong vibrations and the degradation rate of the track are the main factors affecting the transport safety of a railroad built over a weak soil. Geogrid reinforced embankment supported by pile structure is a new efficient constr
Lat. Am. j. solids struct.. Publicado em: 15/08/2019
-
12. ESTIMATION OF TENSILE STRENGTH PARALLEL TO GRAIN OF WOOD SPECIES
ABSTRACT According to the ABNT NBR 7190: 1997 standard, tensile strength of wood samples shall be defined as the ratio between the ultimate strength from a stress test and the specimen cross-sectional area (350 mm2). However, due to the complex wood anatomy and experimental difficulties, the fractured surface in tested samples are not perpendicular to the lo
Eng. Agríc.. Publicado em: 12/08/2019