scholarly journals Assessment of Dielectric Paper Degradation through Mechanical Characterisation

2018 ◽  
Author(s):  
Cristina Fernández-Diego ◽  
Inmaculada Fernández ◽  
Felix Ortiz ◽  
Isidro Carrascal ◽  
Carlos Renedo ◽  
...  
Keyword(s):  
Paper Degradation ◽  
Mechanical Characterisation

MECHANICAL CHARACTERISATION OF HYBRID NATURAL FIBERS COMPOSITES

2017 ◽  
Author(s):  
Jorge Neto ◽  
Rosemere de Araujo Alves Lima ◽  
Silvio Romero de Barros ◽  
DOINA BANEA ◽  
DANIEL KIOSHI CAVALCANTI
Keyword(s):  
Natural Fibers ◽  
Mechanical Characterisation

Using optical spectroscopy for the study of paper degradation

2006 ◽  
Vol 49 (1) ◽  
pp. 25-35 ◽  
Author(s):  
Mauro Missori ◽  
Marcofabio Righini
Keyword(s):  
Optical Spectroscopy ◽  
Paper Degradation

scholarly journals Development of dose-response functions for historic paper degradation using exposure to natural conditions and multivariate regression

2019 ◽  
Vol 168 ◽  
pp. 108944 ◽  
Author(s):  
Gianluca Pastorelli ◽  
Shuo Cao ◽  
Irena Kralj Cigić ◽  
Costanza Cucci ◽  
Abdelrazek Elnaggar ◽  
...  
Keyword(s):  
Dose Response ◽  
Multivariate Regression ◽  
Response Functions ◽  
Natural Conditions ◽  
Paper Degradation ◽  
Historic Paper

scholarly journals Laser-excited elastic guided waves reveal the complex mechanics of nanoporous silicon

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Marc Thelen ◽  
Nicolas Bochud ◽  
Manuel Brinker ◽  
Claire Prada ◽  
Patrick Huber
Keyword(s):  
Guided Waves ◽  
Laser Ultrasonics ◽  
Bulk Silicon ◽  
Nanoporous Silicon ◽  
Stiffness Reduction ◽  
Mechanical Characterisation ◽  
Isotropic Elasticity ◽  
On Chip ◽  
Non Destructive

AbstractNanoporosity in silicon leads to completely new functionalities of this mainstream semiconductor. A difficult to assess mechanics has however significantly limited its application in fields ranging from nanofluidics and biosensorics to drug delivery, energy storage and photonics. Here, we present a study on laser-excited elastic guided waves detected contactless and non-destructively in dry and liquid-infused single-crystalline porous silicon. These experiments reveal that the self-organised formation of 100 billions of parallel nanopores per square centimetre cross section results in a nearly isotropic elasticity perpendicular to the pore axes and an 80% effective stiffness reduction, altogether leading to significant deviations from the cubic anisotropy observed in bulk silicon. Our thorough assessment of the wafer-scale mechanics of nanoporous silicon provides the base for predictive applications in robust on-chip devices and evidences that recent breakthroughs in laser ultrasonics open up entirely new frontiers for in-situ, non-destructive mechanical characterisation of dry and liquid-functionalised porous materials.

scholarly journals Mechanical Characterisation and Shrinkage of Thermoactivated Recycled Cement Concrete

2021 ◽  
Vol 11 (6) ◽  
pp. 2454
Author(s):  
Sofia Real ◽  
José Alexandre Bogas ◽  
Ana Carriço ◽  
Susana Hu
Keyword(s):  
Mechanical Strength ◽  
Elasticity Modulus ◽  
Ultrasonic Pulse Velocity ◽  
Ultrasonic Pulse ◽  
Pulse Velocity ◽  
Cement Concrete ◽  
Supplementary Cementitious Material ◽  
Mechanical Characterisation ◽  
Shrinkage Behaviour ◽  
Binder Ratio

This paper investigates the mechanical and shrinkage behaviour of concrete with recycled cement (RC) thermoactivated from waste cement paste and waste concrete. Overall, compared to ordinary Portland cement (OPC), for the same water/binder ratio, the mechanical strength and ultrasonic pulse velocity were not significantly influenced by the incorporation of RC. The elasticity modulus decreased with the addition of RC and the shrinkage tended to increase at high RC content. The incorporation of up to 15% RC allowed the production of workable concrete with identical shrinkage and similar to higher mechanical strength than concrete with only OPC. RC proved to be a very promising more eco-efficient supplementary cementitious material.

Micrographical, minerological and nano-mechanical characterisation of microbial carbonates from urease and carbonic anhydrase producing bacteria

2016 ◽  
Vol 94 ◽  
pp. 443-454 ◽  
Author(s):  
Navdeep Kaur Dhami ◽  
Abhijit Mukherjee ◽  
M. Sudhakara Reddy
Keyword(s):  
Carbonic Anhydrase ◽  
Microbial Carbonates ◽  
Mechanical Characterisation

Synthesis and mechanical characterisation of cellulose based textiles grafted with acrylic monomers

2006 ◽  
Vol 42 (1) ◽  
pp. 51-60 ◽  
Author(s):  
Elisabetta Princi ◽  
Silvia Vicini ◽  
Enrico Pedemonte ◽  
Gennaro Gentile ◽  
Mariacristina Cocca ◽  
...  
Keyword(s):  
Mechanical Characterisation ◽  
Acrylic Monomers

Mechanical characterisation for numerical simulation of extrusion-based 3D concrete printing

2021 ◽  
pp. 102944
Author(s):  
Marchant van den Heever ◽  
Frederick Bester ◽  
Jacques Kruger ◽  
Gideon van Zijl
Keyword(s):  
Numerical Simulation ◽  
Mechanical Characterisation

Mechanical characterisation of Dacron graft: Experiments and numerical simulation

2016 ◽  
Vol 49 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Claudio A. Bustos ◽  
Claudio M. García-Herrera ◽  
Diego J. Celentano
Keyword(s):  
Numerical Simulation ◽  
Dacron Graft ◽  
Mechanical Characterisation

Electromagnetic and mechanical characterisation of ITER CS-MC conductors affected by transverse cyclic loading. III. Mechanical properties

1999 ◽  
Vol 9 (2) ◽  
pp. 165-168 ◽  
Author(s):  
A. Nijhuis ◽  
N.H.W. Noordman ◽  
O.A. Shevchenko ◽  
H.H.J. ten Kate ◽  
N. Mitchell
Keyword(s):  
Mechanical Properties ◽  
Cyclic Loading ◽  
Mechanical Characterisation
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