scholarly journals Scale effect on tribo-mechanical behavior of vegetal fibers in reinforced bio-composite materials

2017 ◽  
Vol 150 ◽  
pp. 87-94 ◽  
Author(s):  
Faissal Chegdani ◽  
Mohamed El Mansori ◽  
Sabeur Mezghani ◽  
Alex Montagne
Keyword(s):  
Composite Materials ◽  
Mechanical Behavior ◽  
Scale Effect ◽  
Vegetal Fibers

SUSTAINABLE USE OF VEGETAL FIBERS IN COMPOSITE MATERIALS. SOURCES OF VEGETAL FIBERS

2009 ◽  
Vol 8 (3) ◽  
pp. 429-438 ◽  
Author(s):  
Dan Gavrilescu ◽  
Bogdan Marian Tofanica ◽  
Adrian Catalin Puitel ◽  
Puiu Petrea
Keyword(s):  
Composite Materials ◽  
Sustainable Use ◽  
Vegetal Fibers

scholarly journals Special Issue on Advanced Theoretical and Computational Methods for Complex Materials and Structures

2021 ◽  
Vol 11 (6) ◽  
pp. 2532
Author(s):  
Francesco Tornabene ◽  
Rossana Dimitri
Keyword(s):  
Composite Materials ◽  
Mechanical Behavior ◽  
Computational Methods ◽  
Complex Geometries ◽  
Structural Members ◽  
Complex Materials ◽  
Special Issue ◽  
Scientists And Engineers

The large use of composite materials and shell structural members with complex geometries in technologies related to various branches of engineering, has gained increased attention from scientists and engineers for the development of even more refined approaches, to investigate their mechanical behavior [...]

Dynamic mechanical behavior of flocked layer composite materials

2019 ◽  
Vol 207 ◽  
pp. 677-683 ◽  
Author(s):  
Karoly F. Fodor ◽  
Vijaya Chalivendra ◽  
Yong K. Kim ◽  
Armand F. Lewis
Keyword(s):  
Composite Materials ◽  
Mechanical Behavior ◽  
Dynamic Mechanical ◽  
Dynamic Mechanical Behavior ◽  
Layer Composite

scholarly journals A study into the scale effect on the strength properties of polymer composite materials

2019 ◽  
Vol 5 (2) ◽  
pp. 103-108
Author(s):  
Valentina V. Kiryushina ◽  
Yuliya Yu. Kovaleva ◽  
Petr A. Stepanov ◽  
Pavel V. Kovalenko
Keyword(s):  
Composite Materials ◽  
Polymer Composite ◽  
Scale Effect ◽  
Mechanical Characteristics ◽  
Full Scale ◽  
Sample Thickness ◽  
Polymer Composite Materials ◽  
Test Machine ◽  
Test Results ◽  
Laboratory Sample

Polymer composite materials (PCM) are used extensively and are viewed as candidates for application in various industries, including nuclear power. Despite a variety of methods and procedures employed to investigate the mechanical characteristics of PCMs, the use of the laboratory sample mechanical test results to design and model large-sized structures is not always fully correct and reasonable. In particular, one of the problems is concerned with taking into account the scale parameter effects on the PCM strength and elastic characteristics immediately in the product. The purpose of the study is to investigate the scale effects on the mechanical characteristics of glass reinforced plastics using phenolformaldehyde and silicon-organic binders and a fabric quartz filler. Samples of four different standard sizes under GOST 25604-82 and GOST 4648-2014 were tested for three-point bending using an LFM-100 test machine to estimate the scale effect. The thicknesses of the model samples were chosen with regard for the wall thicknesses of full-scale products under development or manufactured commercially and the test machine features, and varied in the limits of 1.6 to 7.5 mm. The tests showed that strength decreased as the sample thickness was increased to 3 mm and more both at room and elevated (200 to 500 °C) temperatures, which can be described by an exponential function based on the Weibull statistical model. The values of the Weibull modulus that characterizes the extent of the scale effect on the strength of the tested materials were 4.6 to 6.7. The average bend strength in the sample thickness range of 3 mm and less does not vary notably or tends to increase slightly as the thickness is increased. This fact makes it possible to conclude that estimation of allowable stresses in a thin-wall product requires the use of test results for samples with a thickness that is equal to the product wall thickness since standard samples may yield overestimated allowable stress values and lead, accordingly, to incorrect calculations of the strength factor. The results obtained shall be taken into account when defining the allowable levels of operation for full-scale products and structures of polymer composites based on the laboratory sample strength data as well as when estimating their robustness as a characteristic of the product’s fail-safe operation.

High temperature mechanical behavior of low stiffness Al 2 TiO 5 and Al 2 TiO 5 ‐ 3Al 2 O 3 .2SiO 2 ‐ ZrTiO 4 composite materials

2021 ◽  
Author(s):  
María Agustina Violini ◽  
María Florencia Hernández ◽  
Sebastián Emiliano Gass ◽  
Analía Gladys Tomba Martínez ◽  
Nicolás Maximiliano Rendtorff
Keyword(s):  
High Temperature ◽  
Composite Materials ◽  
Mechanical Behavior ◽  
Low Stiffness
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