Лесотехнически Университет

Summary

In spite of the different diameter and density of the vessels of diffuse porous species, they can be more or less similar in these characteristics. This study discusses the differences of the vessels in several Bulgarian local growing tree species which have only single row core rays.

There are measured the average diameter and density of the vessels. Using them, the area of the individual anatomical components is calculated. The mean and the variance are determined in order to be used as diagnostic indicators. An examination of the statistical significance of the samples is made in order to determine which of the anatomical features can be used to identify the wooden species.

Summary

The wood of deciduous species are characterized by complex structure and greater specialization of cells. Besides the different diameter and density for each type trachea may be more or less similar in size. The work examines the differences of the trachea in several mestnorastyashti several tropical tree species.

Measured are the dimensions of cells and their variation within the annual ring. Certain cells are area variances and their diameter. Comparison is made between anatomical characteristics of individual species.

Summary

Quality of products manufactured takes an extremely important position in all types of manufacture today. This is necessitated by the continuously growing competition at market level – customers value more and more quality products and turn to those companies that can give them the necessary thing according to their requirements. This applies especially to furniture-manufacturing companies.

That is why of extreme importance is to find the exact approaches and methods for quality management and assurance. One of those methods is the FMEA (Failure Mode and Effect Analysis) method that is an analytical engineering method used to examine and eliminate potential discrepancies, problems, faults and errors.

The aim of the paper is to establish the possibility of application of the FMEA method in increasing the quality of cabinet furniture manufactured, with following tasks having been carried out: an assessment of the risk of allowing potential discrepancies, problems, faults and errors during manufacture of cabinet furniture in specific company has been performed, by characterising the reasons leading to them by means of application of the FMEA method; the necessary actions for improvement have been determined; a new assessment of the risk of potential discrepancies, problems, faults and errors after performance of the outlined improvements by means of the FMEA method has been made.