THE INVESTIGATION OF A BUTT WELD WITH ULTRASOUND

In the case of welded joints there are defects that can not be seen with the naked eye. These defects being within the material to know if they can cause failures in the future, should be investigated and ranked in an acceptance class according to certain standards in the field. In this paper we investigate using the ultrasonic control method, the welding seam between two butt welded sheets

INVESTIGATION OF A FILLET WELF JOINT WITH ULTRASOUND

Fillet welded joints have a very high share in the industry. In the case of these welded joints, the stress concentrators at the intersection of the base material / filler material and the inner discontinuities are specific. The cumulative effect of these stress concentrators and the interior defects that inevitably occur in welding can lead to failure that may result in unpleasant consequences. Therefore, in the case of fillet welded joints, it is necessary to monitor and control the inner discontinuities. In this paper we investigate using the ultrasound control method, the fillet weld seam between those two T-welded sheets

MODIFICATION OF PERFORMANCE INDICATORS USING KANBAN METHOD AND GROWTH IN PRODUCTION LEVEL

The Kanban method is based on the principle of taking over the tasks by the team members as they become available (pull system), and not on the placement of the tasks without their being requested by the person to execute them (push system).Using the Kanban method, components are manufactured only when needed, so extra components are eliminated. As there is no extra production, waste cuts and scrap are reduced

STRUCTURAL - FUNCTIONAL ANALYSIS OF THE SOIL LEVEL MACHINE

The soil leveling machine is of half – carried type and it works, as unit, with the wheeled tractor (or caterpillar tractor). The leveling plane is established by the rear wheels of the tractor and by the wheels of the hind train of the machine. The positive and negative soil dislevelments are given against the leveling plane. In the paper there are established the displacements of the mechanism for the automatic working regime, in which the cutting blade is execution element

ELIMINATION OF LOSSES USED LEAN MANUFACTURING TECHNIQUES AND KAIZEN PHILOSOPHY

Lean manufacturing is today one of the most successful production strategies for improving competitiveness. To achieve success, a healthy production system based on solid concepts and philosophies is also required. Thus, it has been decided to adopt and accelerate the Lean Manufacturing concept on every site. The Kaizen or "Continuous Improvement by Involving All" method is a teamwork methodology used to systematically solve problems and apply improvement solutions

ANALYSIS OF QUALITY PROBLEMS IN PRODUCTION SYSTEM USING THE PDCA INSTRUMENT

This model provides a framework for improving a process or system. It can be used as a guiding tool throughout the improvement project, for the development of specific projects when identified areas requiring improvement, or when anomalies or deviations from standard are detected in existing projects. The PDCA cycle has been created to be used as a dynamic model. Completing one of the stages of the cycle automatically leads to the start of the next stage. Following the principle of continuous quality improvement, the process can be reviewed at any time, and a new "change test" can begin

METHOD OF ANALYSIS OF VALUE OF USE

Quality assessment consists of quantifying the current performance level in accordance with performance standards. Quality assessment measures the difference between expected and actual performance to identify opportunities to improve quality. Performance standards can be set for different quality dimensions, such as quality of technical performance or quality of compliance. The differences between the products belonging to a class are given by the qualitative characteristics that describe the product's particularities. Basic features are those that play a direct role in product functionality and can be estimated at the time of purchase. The use characteristics are those that describe the behavior of the product over time. This class includes reliability, maintainability and availability

CONTRIBUTIONS TO THE FINITE ELEMENT MODELING OF ROTARY ULTRASONIC MOTORS

The present paper is concerned with the main modeling elements as produced by means of thefinite element method of rotary ultrasonic motors. Hence, first the model is designed and then a modaland harmonic analysis are carried out in view of outlining the main outcome

THE DETERMINATION AND APPRECIATION OF OCCUPATIONAL TOXICITY AT WORK

The occupational toxins are those chemicals that workers come into contact with during the exercise of the profession and which under certain conditions have harmful effects on the body. The paper aims to address the determination and assessment of occupational toxicities in a workplace with the aim of ensuring an adequate working enviro nment as well as preventing occupational diseases, accidents and chronic fatigue

FACTOR ANALYSIS OF QUALITY CHARACTERISTICS

Factorial analysis is a statistical technique designed to link a set of variables observed by a smaller number of latent dimensions. Factorial analysis is the method of explaining correlation relationships between two or more variables, in the case of quality, these variables being the quality characteristics of electrical equipment. The main idea on which the factorial analysis is based is that behind the quality characteristics (observable variables) there are latent variables (factors) that influence the dependent variables (output). Factors are linear combinations of the values of the quality characteristics, the coefficients of these linear combinations being called saturations or "loadings" of factors