The main objective of this study was to manufacture and test environmentally friendly composite materials using biomass residues as reinforcement: pine needles recovered paper. A mixed matrix also used, with natural dammar resin the predominant component, in order favor eco-friendly nature resulting material. manufacturing process employed lay-up hand technique. Another investigate how influences mechanical properties its mass percentage increases composition. To influence on composites,...

The sanitary-hygienic control of food is essential for any product. microbiological index equal to safety the product, its permission be in commerce and used food. Ignoring this can result serious illnesses among population upon economic damage an industry through loss number consumers, closure businesses local consumer confidence. Food poisoning acute intestinal diseases are consequences non-compliance with sanitary-epidemiological rules, contamination pathogenic microorganisms occur during...

This paper presents a new solution for an exoskeleton robotic system that is used locomotor assistance in people with disabilities. As novel features of the present research, structural plane-parallel kinematic chain, intended to be as leg robot, proposed. A virtual prototype made, on basis which and dynamic studies are carried out using ADAMS software analysis multibody systems. The simulation performed two situations: walking horizontal plane, well motion when climbing stairs. Following...

In this paper were presented the main steps for defining a virtual prosthetic hip. The elements of classic hip prosthesis generated, one by one, using direct measurement method. These included in biomechanical system. entire model was divided finite elements. Starting from 3D model, goal research is to determine new geometries and optimized solutions an innovative prosthesis.

In this paper, we examine two types of Dammar-based bio resins. the first type, Dammar alone is used as natural resin, while in second type a mixture 70% and 30% Sandarac used. Three sample sets were made each these resins with resin volume proportion 55, 65 75% respectively, rest being epoxy (used, together associated reinforcing material, to generate quick polymerization process). A SEM analysis carried out surface roughness studied materials. series mechanical properties, determined by...

This paper presents studies on the kinematics and dynamics of a new robotic system exoskeleton type to assist human locomotion. Based previous achievements, we designed an original solution. this structural solution, created virtual model using SolidWorks computerized design software. is used for two purposes, namely in first stage will perform motion simulation software dynamic analysis mobile mechanical systems ADAMS_View then based construction prototype manufacture by classical...

In this paper the knee joint biomechanics during squat exercises is studied. Using an acquisition system based on electro-goniometers, measurements of flexion-extension angle movement a sample group healthy subjects are performed. For each subject curves normalized and mean cycle final medium determined. The phase plane portraits used to characterize kinematics biomechanical system. ADAMS software, forces components resultant connection force in human

In this paper the design, experimental and numerical simulation of a test rig for stabilizer bars fatigue resistance study is presented. A virtual CAD developed, design purposes. dynamic model developed in ADAMS software, to bar durability. Strain gauge transducers are used measure deformations bar.

Abstract The stabilizing bar is the suspension element that reduces sliding of car by stopping any kind uneven vertical movement between wheels to which it connected. stabilizer a piece designed increase stability during curves, in case sharp turns or maneuvers, and enhance vehicle maneuverability. In general, sports cars are equipped with such bars both on front rear. this paper we present research experimental determination characteristic rigidity torsion springs used suspensions motor...

According to National Administration of Meteorology, July month 2015, will represent one the longest periods with canicular temperatures in last decades. In Oltenia region and Craiova city, too, yellow or orange code warning, had be declared. To determine thermal discomfort sensation felt by population Craiova, experimental research concerning micrometeorological measurements real temperature relative humidity that contribute local Temperature - Humidity Index (THI) value was performed....

Abstract. For the optimum setup of an industrial manufacturing process, it can be important to know drilling forces and moments. In many cases, theoretical estimates are not accurate enough, especially when dealing with new materials, experimental measurements mandatory. This paper presents design a dynamometer comprising one-spoked wheel elastic component measure thrust force moment. A finite element analysis was made, using Ansys software, find most favorable position for strain gauges....

The paper presents a method which combines experimental and theoretical approach, to derive an expression for estimating the power of thermal source in turning process. This uses finite element mesh overlapped on infrared images (obtained from cutting process), order extract nodal temperatures corresponding on. A reverse formulation analysis is used, knowing boundary conditions, deriving load produces measured distribution. experiment has concentrated allied steel.

In order to control the temperature during milling process of aluminum alloys and keeping as minimum possible, choice cutting parameters their optimization is very important, both for tool wear but also surface quality machined surface. The main purpose this paper find optimum values (rotational speed depth cut) so that value be obtained. Using adequate experimental conditions with contact measurements techniques (thermocouple K-type) carried out on some types appropriate statistical...

According to recent research, quite a large part of the buses have exceeded loading standards, which causes road damage. In order reduce weight, use lighter materials such as aluminum was used. Moreover, cost maintenance decreases and fuel consumption is reduced. this paper we summarize study dynamic vibrational behavior chassis, including rolling system. [2], several models been elaborated necessary for study. present proposed integration and, implicitly, finding response, result chassis in...