Meso- to Macro-scale Probability Aspects for Size Effects and Heterogenous Materials Failure

2010 ◽  
pp. 253-275
Author(s):  
Jean-Baptiste Colliat ◽  
Martin Hautefeuille ◽  
Adnan Ibrahimbegovic
Keyword(s):  
Size Effects ◽  
Macro Scale ◽  
Materials Failure ◽  
Scale Probability

scholarly journals Influence of Size Effect on Dynamic Mechanical Properties of OFHC Copper at Micro/Mesoscopic Scale

2021 ◽  
Author(s):  
Chuanzhi Jing ◽  
Jilai Wang ◽  
Chengpeng Zhang ◽  
Yan Sun ◽  
Zhenyu Shi
Keyword(s):  
Mechanical Properties ◽  
Constitutive Model ◽  
Strain Rate ◽  
Size Effects ◽  
Dynamic Mechanical Properties ◽  
Experimental Results ◽  
Ofhc Copper ◽  
Static Compression ◽  
Dynamic Mechanical ◽  
Macro Scale

Abstract The dynamic mechanical properties of metallic materials have been extensively investigated at the macro-scale in terms of deformation mechanisms, strain rate strengthening, and fracture mechanisms. However, the dynamic mechanical properties affected by size effects at micro/meso-scales have rarely been investigated. To explore the size effects on the dynamic mechanical properties at micro/meso-scales, the experiments of quasi-static compression and SHPB were carried out using oxygen-free, high-conductivity (OFHC) copper with different geometrical and grain sizes. The experimental results show that the quasi-static and dynamic mechanical properties of OFHC copper are affected by size effects at micro/meso-scales. In particular, OFHC copper exhibits strain rate strengthening effects at the micro/meso-scales, and the presence of micro-cracks was observed in the SHPB experimental specimens. The J-C constitutive model based on the surface layer model is proposed and the analysis of the average relative error of the modified model and the original constitutive model is performed. Finite element analysis was carried out based on the modified J-C model and the original model, and the results show that the modified J-C model was in good agreement with the experimental results.

Tailoring microstructures of materials through biomimetics

1993 ◽  
Vol 51 ◽  
pp. 500-501
Author(s):  
Mehmet Sarikaya ◽  
Ilhan A. Aksay
Keyword(s):  
Chemical Properties ◽  
Design And Synthesis ◽  
Structure Sensitive ◽  
Macro Scale ◽  
Methods Of Synthesis ◽  
Successive Level ◽  
Engineering Materials ◽  
Physical And Chemical ◽  
And Chemical Properties ◽  
Synthesis Of Materials

Biomimetics involves investigation of structure, function, and methods of synthesis of biological composite materials. The goal is to apply this information to the design and synthesis of materials for engineering applications.Properties of engineering materials are structure sensitive through the whole spectrum of dimensions from nanometer to macro scale. The goal in designing and processing of technological materials, therefore, is to control microstructural evolution at each of these dimensions so as to achieve predictable physical and chemical properties. Control at each successive level of dimension, however, is a major challenge as is the retention of integrity between successive levels. Engineering materials are rarely fabricated to achieve more than a few of the desired properties and the synthesis techniques usually involve high temperature or low pressure conditions that are energy inefficient and environmentally damaging.In contrast to human-made materials, organisms synthesize composites whose intricate structures are more controlled at each scale and hierarchical order.

Search for quantum size effects in ultrathin epitaxial metallic films

1991 ◽  
Vol 16 (6) ◽  
pp. 623-638 ◽  
Author(s):  
P.A. Badoz ◽  
F. Arnaud d'Avitaya ◽  
E. Rosencher
Keyword(s):  
Size Effects ◽  
Quantum Size Effects ◽  
Metallic Films ◽  
Quantum Size

Cluster size effects revisited

1995 ◽  
Vol 92 ◽  
pp. 205-225 ◽  
Author(s):  
J Jortner
Keyword(s):  
Size Effects ◽  
Cluster Size

QUANTUM-SIZE EFFECTS ON THE OPTICAL PROPERTIES OF SMALL PARTICLES

1983 ◽  
Vol 44 (C10) ◽  
pp. C10-375-C10-378 ◽  
Author(s):  
P. Ahlqvist ◽  
P. de Andrés ◽  
R. Monreal ◽  
F. Flores
Keyword(s):  
Optical Properties ◽  
Size Effects ◽  
Quantum Size Effects ◽  
Small Particles ◽  
Quantum Size

Quantum size effects in semiconducting and semimetallic films

1968 ◽  
Vol 96 (9) ◽  
pp. 61-86 ◽  
Author(s):  
B.A. Tavger ◽  
V.Ya. Demikhovskii
Keyword(s):  
Size Effects ◽  
Quantum Size Effects ◽  
Quantum Size

Anomalous penetration of electromagnetic field in a metal and radiofrequency size effects

1968 ◽  
Vol 94 (2) ◽  
pp. 193-241 ◽  
Author(s):  
E.A. Kaner ◽  
Vsevolod F. Gantmakher
Keyword(s):  
Electromagnetic Field ◽  
Size Effects
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