MAINTENANCE PLANNING OF THE SEWING NEEDLES OF SIMPLE SEWING MACHINES
Journal Title: Annals of the University of Oradea. Fascicle of Textiles, Leatherwork - Year 2017, Vol 0, Issue 2
Abstract
The effectiveness of simple sewing machines can be increased through the planning of predictive maintenance activities. The monitoring of the technical condition of the sewing needles of simple sewing machines was based on the measurement of their noise level. For this purpose a Center 322 sonometer was used, while the data obtained during the monitoring process was analyzed through the E322 software. The working speed of the simple sewing machine that was used for obtaining the experimental results varied from 200 stitches/minute to 4000 stitches/minute. The noise levels of a new needle at the working speed of 200 stitches/minute and 4000 stitches/minute were measured. The noise levels for a fault needle at the same working speed of 200 stitches/minute, respectively 4000 stitches/minute were also measured. Using Fuzzy Logic Toolbox ™ module of Matlab®, a decision-making system for determining when replacement of the sewing needles of simple sewing machines should be performed was developed. A case study illustrates the employment of the decision-making system based on fuzzy logic for a simple sewing machine. By replacing the sewing needles of simple sewing machines at the time specified through the decision-making system based on fuzzy logic, the occurrence of the failure can be prevented and the quality of textile products can be improved.
Authors and Affiliations
Marius Darius ŞUTEU, Calin Florin BABAN, Marius BABAN, Edit TOTH (Kiss), Rareș Mihai PANCU
EVALUATION OF LEATHER QUALITY AND ECOTOXICITY IN SIMULATED TANNERY WASTEWATERS USING MIMOSA TANNIN
The leather tanning industry is characterized by the production of different kinds of effluents, generated in each step of leather processing. These effluents have various chemical compounds which may cause toxicity and...
OPTICAL WHITENING OF 50/50% PES/WOOL FABRICS
If a high level of whiteness is required for wool and wool blends, it is normal to carry out a combined oxidative/reductive bleaching treatments. A higher whiteness can be achieved by the use of optical whitening agents....
ECOLABELS FOR LEATHER AND LEATHER PRODUCTS
Nowadays, there is an increasing demand for consumer goods ecolabelling, coming from consumers concern for adverse environmental impacts of industrial pollution and manufacturers need to protect their existing markets an...
STUDY OF THE INTEGRATED QUALITY-RISK MANAGEMENT FOR INDUSTRIAL COMPANIES
The quality of products is the final expression of the quality of production processes, given the technical, economic, psycho-sensory, etc. performances of the products. Industrial quality refers to the conformity of the...
IMPROVEMENT OF THE ERGONOMIC FUNCTION – AN ESSENTIAL CONDITION FOR ENSURING KNITTED PRODUCTS QUALITY
The evaluation products quality in general and particularly in knitted fabrics starts with determining their most important quality characteristics as an initial step in the multicriterial analysis used to establish the...