Mechanical properties of materials

Wood, an environmentally friendly construction material, is characterized by a critical attribute that significantly influences its mechanical properties and durability: its moisture absorption behavior. This study expands upon an existing one-dimensional model to develop an innovative two-dimensional numerical framework for simulating moisture propagation within wood.

15p vibecca 01-10-2024 3 0   Download

In this study, a series of Consolidated–Undrained triaxial compression tests were conducted at a constant axial strain rate, with a small unloading and reloading during the monotonic loading to investigate the effect of various densities and curing times on the mechanical properties of Liquefied Stabilized Soil (LSS).

6p vibecca 01-10-2024 1 1   Download

In this study, raw rice husk and bottom ash are used as fine aggregates, while fly ash is used as a binder material in the production of environmentally friendly unfired building bricks. The effect of raw rice husk content on the properties of green building bricks is investigated.

11p vifilm 24-09-2024 7 1   Download

The research in the field of cementitious materials has brought towards many non-traditional binder systems. One of these systems, a ternary binder composed of calcium aluminate cement (CAC), ordinary Portland cement (OPC), and calcium sulfate (C$Hx), called ettringite binder, offers a possibility of very rapid development in mechanical strength.

6p viyoko 24-09-2024 2 1   Download

The small punch test with an application of a relatively small specimen has recently become a reliable material mechanics testing method. In this study, the small punch test is set up based on the conventional mechanical testing machine for SUS304 stainless steel to evaluate the mechanical properties of SUS304 steel at different displacement rates of the punch in quasi-static loading condition in the case of with and without heat treatment.

14p xuanphongdacy06 18-09-2024 2 1   Download

This study aims to investigate the effectiveness of the green microwave technique in producing 1T/2H-MoS2 nanomaterials using polyol solvents. The paper presents a thorough analysis of the structural and property characteristics of the synthesized materials and elucidates the underlying chemical mechanism that governs the formation of hybrid-phase nanostructures. Additionally, the role of polyol solvents in the practical synthesis of nano MoS2 under microwave heating is evaluated and explained.

15p xuanphongdacy06 18-09-2024 1 1   Download

In civil engineering, distinct mechanical properties and behaviors of structural steel rods necessitate a novel approach to material modeling. This study extends the application of recently proposed strain-hardening laws, originally developed for automotive sheet metals, to several structural steel rods (CB240-T and CB300-T). Standard uniaxial tensile tests are conducted for each examined material to obtain experimental stress strain data.

11p xuanphongdacy06 18-09-2024 3 1   Download

In this study, a methodology was created to evaluate the values of the yield stress of materials based on the grain boundary strengthening equation. This method was constructed by observing the average grain size and determining the mechanical properties of three microstructural phases in the weld zone (i.e. based metal, heat-affected zone, and weld metal).

15p vifaye 20-09-2024 1 1   Download

This paper investigates the influence of intergranular friction and grain size distributions on the initial void ratio of a granular sample subjected to isotropic compression loading. In the field of geomechanics, besides the loading path and evolution of microscopic properties, the initial void ratio is a crucial and key factor that governs the mechanical behavior of geomaterials.

10p vifaye 20-09-2024 3 1   Download

natural fiber for the construction of hybrid bio-composites. In the current research project, a thorough analysis of the use of soy-PF resin for the creation of composites reinforced with jute was conducted. A novel and practical cutlery material was created after the mechanical properties were evaluated and optimized. In order to study the value addition of these newly proposed biocomposite materials as an ecological alternative in terms of natural resources versus synthetic resources, variables such as hardness, cytotoxicity, and degrading qualities of composites were also explored.

9p dianmotminh02 03-05-2024 7 3   Download

This study uses chitin as a filler for a polyurethane composite foam. The obtained polymer composite materials (PCM) are examined the technological parameters of the foaming (start time, rise time, and apparent density), the physical-mechanical properties (the compressive stress, compression set, resilience), and the cross-link density.

8p dianmotminh02 03-05-2024 7 3   Download

There were only limited researches on the properties of 3D periodic cellular materials, especially for 3D periodic cellular materials with Schwarz primitive structure which have potential to be used for energy absorption. The objective of this study is to investigate the energy absorption, compressive strength and deformation pattern of the 3D periodic cellular materials with Schwarz primitive structure, which possesses optimum bulk modulus. The study is planned to provide these important research issues of such 3D cellular materials for energy absorption applications.

77p runthenight04 02-02-2023 5 2   Download

This research investigates a means of negating such shortcomings and reaping the benefits of both LPBF additive manufacturing and traditional manufacturing methods by joining such parts together using laser welding in the autogenous mode (no fillers required). Based on the literature review conducted in this field and the gaps identified, a two-stage methodology was utilised, as per following.

191p runthenight04 02-02-2023 7 5   Download

Once the mechanical properties of printed TPU are characterised, a novel, low cost, and environmentally friendly method for concrete casting using printed TPU moulds is proposed in this thesis. Additively manufactured TPU mould is developed to cast complex concrete structures. A planar topologically optimized cantilever and a free-form 3D column are cast using the proposed TPU mould. Good surface quality is obtained for the cast concrete elements, and the moulds can be reused many times after cleaning.

98p runthenight04 02-02-2023 8 4   Download

The recent advances in the study of the unique capabilities of monolayer crystals had predicted piezoelectricity in two-dimensional (2D) group IV chalcogenides which are not present in their bulk forms. In this study, the predicted piezoelectric properties of was experimentally explored through Piezoelectric Force Microscopy (PFM). Tin Sulfide (SnS), Tin Selenide (SnSe), Germanium Sulfide (GeS), were exfoliated from their bulk forms by the top down methods of liquid sonication, while and Tin Disulfide (SnS2) mechanically exfoliated by tape.

82p runthenight04 02-02-2023 9 3   Download

The aim of this project was to design, fabricate and characterise multifunctional structural composites incorporating phase change materials for thermal management applications. The specific research objectives to achieve this goal were formulated as follows: Investigate effective methods to integrate microencapsulated PCMs into glass fibrereinforced epoxy composites; Evaluate the mechanical properties of micro-PCMs enhanced FRP composites and investigate associated failure mechanisms; Study the thermal management effectiveness of micro-PCMs enhanced FRP composites.

125p runthenight04 02-02-2023 9 3   Download

Steel fiber reinforced concrete (SFRC) is a multiple-composite material developed during the early 1970s. In SFRC, short steel fibers are randomly distributed in concrete. Steel fibers can prevent the development of micro-cracks inside the concrete and reduce the expansion and development of the macro-cracks, thus enhance mechanical performance of SFRC. However, there is lack of studies on the influence of flowability of fresh SFRC on the steel fiber distribution patterns and mechanical properties of hardened SFRC.

85p runthenight04 02-02-2023 6 4   Download

Once the mechanical properties of printed TPU are characterised, a novel, low cost, and environmentally friendly method for concrete casting using printed TPU moulds is proposed in this thesis. The findings of this thesis will provide clear guidelines for the selection of processing parameters for additively manufactured TPU parts and the method of casting complicated concrete structures with additively manufactured TPU mould.

98p runordie3 06-07-2022 13 3   Download

Goals of the thesis: Preparing of zirconia/silane combined films on steel subtrate for organic coatings to replace phosphate and chromate pretreatment; Proposing the mechanism of film formation process and assessing characteristics of morphology, composition, electrochemical properties and bonding of the zirconia/silane film.

27p extraenglish 24-05-2021 21 5   Download

Equivalent inclusion approach is then developed to account for possible diversions, such as non-idealistic geometric forms of the inhomogeneities, imperfect matrix-inclusion contacts, filler dispersions, and when the particular values of the fillers’ properties are unspecified, using available numerical or experimental reference conductivity data for particular composites.

28p capheviahe27 23-02-2021 25 4   Download