In a global context where sustainability is becoming priority in construction, this paper analyzes the use of composite materials based on clay and plant waste, offering an ecological alternative to conventional materials. This article mechanical properties made from with walnut shell inserts, shredded biomass corn stalks, wheat straw, wool waste. These are developed for sustainable rural construction. The study evaluates flexural compressive strength measurements at varying insert...

The article describes the results of research carried out for systemic description manufacturing technological processes composite materials with clay matrix and insert from agricultural waste. objectives these researches include valorization waste cheap abundant resources to obtain usable in civil constructions or various rural developments, properties superior existing ones, example adobe bricks. used, technology obtaining, dependence between output parameters input control parameters.

The article presents results obtained for the thermal characterization of composite materials with clay matrix and inserts from agricultural waste (MCMLIDA). experiments carried out led to estimation coefficient conductivity bricks made MCMLIDA material. have physical properties dependent on parameters manufacturing process, one most important being concentration insert. were tested eleven insert concentrations four types (maize cobs, walnut husks, wheat straw, wool). Only first two had...

The paper addresses the methodology for obtaining biocomposite structures from waste, with sound-absorbing properties, such as: thuja shells, walnut pistachio beech sawdust, pumpkin seeds shells and sunflower shells. experimental analysis carried out considers study of properties held by proposed new materials, determining value sound absorption coefficient, reflection impedance ratio, using Kundt tube. interpretation results obtained evaluation biocomposites shows that they have properties....

The paper presents recently published literature research on the tightness and strength of flange joints. These could influence both calculation maintenance Some results have been compared to normative stipulations currently used in presentation covers: – sealing gasket design screw load sealing; creep relaxation, thereby cracking joints; an additional axial force joints rotation deformation joint components; flanges without gasket; method bolt tightening uniformity bolts loading tightness.

The paper presents experimental results on the mechanical behaviour for a polymer based composite sandwich panel tensile and bending tested, which uses, one by one, cellular core fabricated additive manufacturing of four different types polymeric materials: ABS (acrylonitrile butadiene styrene), PC (polycarbonate), PLA (polylactide) CF (polylactide + 40% carbon fibre), with thickness 3 5 mm. This research focuses comparative analysis increase effect structure�s strength. Experimental tests...

Abstract.The paper aims to present research on the determination of coefficient acoustic absorption as a function frequency, for composite monolayer plates (made of: MDF - wooden dried agglomerated fibres with medium density, RWB rebated wood from beech, PS extruded polystyrene) and multilayer (with outer coatings MDF, polymeric core polystyrene). The sound-absorbing behavior such is highlighted in cabins made structures.

This paper presents the methods for recovery of treated sludge: technological valorisation, agricultural valorization, energy recovery, gasification, pyrolysis, supercritical oxidation water, obtaining material plastering, bricks. These technologies are biology-based (advanced anaerobic digestion strategies and bio-drying) heat-based (gasification, pyrolysis water processing).

This paper presents the methods for recovery of treated sludge: technological valorisation, agricultural valorization, energy recovery, gasification, pyrolysis, supercritical oxidation water, obtaining material plastering, bricks. These technologies are biology-based (advanced anaerobic digestion strategies and bio-drying) heat-based (gasification, pyrolysis water processing). Keywords: sludge,

The article describes the achievement and values of mechanical thermal characteristics composite materials with sludge matrix insertion agricultural waste, focusing on compressive strength conductivity coefficient. These two are essential for civil engineering applications. coefficient depend significantly concentration in material: compression decreases, increases as increases. For mud composites seed husk insert, varies between 0.375 MPa 2.292 MPa. In case sawdust 0.149 indicate that at...

The article describes the results obtained by authors in sludge dewatering through new processes and evaluating their performance. research is part of sustainable development valorizing agricultural waste composite materials with applicability constructions from rural areas. main method tested this vibratory sieving dewatering. experimental examined three variable parameters: initial moisture, sieve angle, engine speed causing vibration. A three-factorial experiment was performed four values...

Technological aspects regarding sustainable development concept and considerations on creating textile products with high added value from recycled fibres as combed carded yarns, woven fabric waste, hosiery leather waste. The paper offers some ways to reuse wastes industry presents physical characteristics of composite materials based PVC mixed different concentrations wastes, before after forced ageing.

The paper treats Finite Element Analysis (FEA) specific to the mechanical behavior of a structural layer cap type with polymer cellular cores within pressure vessel. layered composite structure comprises two outer shells (synthetic glass/ plexiglass) and core triangular shaped cells. This analysis uses Autodesk Inventor 2016 Professional 3D design modeling software, in conjunction FEA program, ANSYS 14.5 - Workbench, using Mesh module. Mechanical models four types test caps, each having...

The article approaches the analysis of stress and deformation states; in thetoroidal shell with elliptical cross section two specific positions, relative to axisof symmetry. internal pressure a working environment as well effect itstemperature are considered external loads. effects may overlap taking into accountthe elastic state material.

In the various chapters of science and especially in engineering sciences, there are many cases superposition and/or cumulation loads or their effects. The way one can solve such problems depends on behavior material under load. paper deals with linear matter which case principle physics, mechanics, mechanical engineering, electrical perfect gas statics, fluid flow etc. Case involving a monodisciplinary approach separated from those an interdisciplinary to practical solutions. is also used...

Finite Element Analysis (FEA) method is used for analysing the mechanical behaviour of standardized tensile and bending (3-point) test specimens made from a multi-layered composite material with two outer polymer facesheets (synthetic glass / plexiglass) triangular cellular core.This analysis uses design modelling, software Autodesk Inventor Professional, which will import later model in FEA -ANSYS 14.5.Highlighting structure specific to having polymeric core (ABS, PLA, PC CF cells,...

<p>The article approaches the analysis of stress and deformation states; in toroidal shell with elliptical cross section two specific positions, relative to axis symmetry. The internal pressure a working environment as well effect its temperature are considered external loads. effects may overlap taking into account elastic state material.</p>

Relationships for critical and allowable normal stress shear were proposed, as well the strength conditions with respect to state state, respectively, in case of static loading cyclic loading, taking into account concept deterioration. Values deterioration obtained against experimental data tubular specimens, only one load, two loads acting simultaneously, samples rectangular cross-section.

This paper deals with the theoretical and experimental mechanical characteristics of composite plates obtained from recyclable polymer protein matrix fibrous reinforcement. The definition model monolayer material its structural elements physical-mechanical evaluation leads to optimal efficient design use all products made such materials. By determination that define properties material, it can be decided on in specific industrial technical applications.

The full safety of operating industrial mechanical equipment, in particular the over-sized ones, with a complex structure, is ensured by compliance all necessary requirements, starting design, fabrication, transportation from supplier to recipient and operation within working parameters. present article that continuing analysis stages heavy as can be seen attached bibliography, takes into consideration evaluation towing forces, case two distant platforms. masses transported components,...

The paper addresses the comparative analytical determination of thermal insulation behavior for various experimental models made stratified and hybrid biocomposites ligno-cellulose nature. resistance overall coefficient each model is performed using calculation methodology energy efficiency. results obtained after analysis biocomposite panels highlighted fact that they have properties with high values global coefficients.

This paper highlights through the issues addressed, application aspects regarding approach of concept recovery sewage sludge from an urban wastewater treatment plant (SEAU), which is in a stage technological expansion and modernization. Thus, it considered need to process potential biological mass generated by anaerobic stabilization SEAU, with population about 10,000 equivalent inhabitants, requires on one hand, design activated basins other fermentation tank, order produce biogas,...