Predicting the mechanical properties of brittle porous materials with various porosity and pore sizes

Laser-induced chemical solution synthesis has been recently developed as a new generic method to create porous nanostructured materials for complex and miniaturized devices. The material made by this approach is successfully demonstrated for electrochemical catalytic, nanoscale powders, protective coatings, and other applications. One question has therefore been raised: What are the mechanical properties of the porous materials deposited by the laser-induced chemical solution synthesis? This paper has attempted to explore the mechanical properties of such porous nanostructured materials deposited by this new nanomanufacturing method. This process also offers an innovative opportunity to study the strength of a very simple bonding in additive manufacturing. A thin-film of copper nanoparticles is deposited on copper substrates; then, the microstructure of the deposited film is characterized by scanning electron microscope (SEM), and mechanical properties are investigated by a variety of experiments, such as microhardness test, nano-indentation test, bending test, and adhesion test. The mechanical properties of substrates with surface deposition have been shown to have adequate bond strength (>60 g/mm) to allow effective usage in intended applications. Based on the test results, statistical regression and significant tests have also been carried out. A new model for the nano-indentation of the porous coating (film) is proposed. The empirical results have shown that the effect of coating thickness is more prominent on mechanical properties in the case of thick coating deposition.

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Monte Carlo Simulation for Exploring Mechanical Properties of Porous Materials Based on Scaled Boundary Finite Element Method

Applied Sciences ◽

10.3390/app12020575 ◽

2022 ◽

Vol 12 (2) ◽

pp. 575

Author(s):

Guangying Liu ◽

Ran Guo ◽

Kuiyu Zhao ◽

Runjie Wang

Keyword(s):

Mechanical Properties ◽

Finite Element Method ◽

Monte Carlo Simulation ◽

Finite Element ◽

Monte Carlo ◽

Porous Materials ◽

Influencing Factors ◽

Random Models ◽

Scaled Boundary Finite Element ◽

Element Method

The existence of pores is a very common feature of nature and of human life, but the existence of pores will alter the mechanical properties of the material. Therefore, it is very important to study the impact of different influencing factors on the mechanical properties of porous materials and to use the law of change in mechanical properties of porous materials for our daily lives. The SBFEM (scaled boundary finite element method) method is used in this paper to calculate a large number of random models of porous materials derived from Matlab code. Multiple influencing factors can be present in these random models. Based on the Monte Carlo simulation, after a large number of model calculations were carried out, the results of the calculations were analyzed statistically in order to determine the variation law of the mechanical properties of porous materials. Moreover, this paper gives fitting formulas for the mechanical properties of different materials. This is very useful for researchers estimating the mechanical properties of porous materials in advance.

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Design of Mechanical Properties of Open-Cell Porous Materials Based on μCT Study of Commercial Foams

MATEC Web of Conferences ◽

10.1051/matecconf/20153003005 ◽

2015 ◽

Vol 30 ◽

pp. 03005 ◽

Cited By ~ 1

Author(s):

Jakub Skibinski ◽

Karol Cwieka ◽

Tomasz Wejrzanowski ◽

Krzysztof J. Kurzydlowski

Keyword(s):

Mechanical Properties ◽

Porous Materials ◽

Open Cell

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MFC/NFC-Based Foam/Aerogel for Production of Porous Materials: Preparation, Properties and Applications

Materials ◽

10.3390/ma13235568 ◽

2020 ◽

Vol 13 (23) ◽

pp. 5568

Author(s):

Chenni Qin ◽

Mingzhu Yao ◽

Yang Liu ◽

Yujie Yang ◽

Yifeng Zong ◽

...

Keyword(s):

Mechanical Properties ◽

Porous Materials ◽

Raw Materials ◽

Sewage Treatment ◽

Nanofibrillated Cellulose ◽

High Specific Surface Area ◽

High Porosity ◽

Retention Performance ◽

Plant Fibers ◽

Technical Problems

Nanofibrillated cellulose and microfibrillated cellulose are potential raw materials separated from plant fibers with a high aspect ratio and excellent mechanical properties, which can be applied in various fields (packaging, medicine, etc.). They have unique advantages in the preparation of aerogels and foams, and have attracted widespread attention in recent years. Cellulose-based porous materials have good biodegradability and biocompatibility, while high porosity and high specific surface area endow them with strong mechanical properties and liquid retention performance, which can be used in wall construction, sewage treatment and other fields. At present, the preparation method of this material has been widely reported, however, due to various process problems, the actual production has not been realized. In this paper, we summarize the existing technical problems and main solutions; in the meantime, two stable systems and several drying processes are described, and the application potential of cellulose-based porous materials in the future is described, which provides a reference for subsequent research.

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Mechanical properties of metal–organic frameworks

Chemical Science ◽

10.1039/c9sc04249k ◽

2019 ◽

Vol 10 (46) ◽

pp. 10666-10679 ◽

Cited By ~ 21

Author(s):

Louis R. Redfern ◽

Omar K. Farha

Keyword(s):

Mechanical Properties ◽

Porous Materials ◽

Metal Organic Frameworks ◽

Physical Stability ◽

Metal Organic

As the field of metal–organic frameworks (MOFs) continues to grow, the physical stability and mechanical properties of these porous materials has become a topic of great interest.

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