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The purpose of this paper is to find the most efficient assembly line balancing solution across many heuristic line balancing methods, in assistance with a developed computer program.

In this paper, assembly line balancing problem was analyzed using t-shirt and knitted pants data. A computer program using MATLAB software for the solution of assembly line balancing problems has been developed. In this study, following heuristic assembly line balancing methods were applied: Hoffman method; position weight method; COMSOAL method; and Kilbridge and Wester method. A MATLAB program has been developed by taking into account of theoretical solution of all these methods. Later the program is developed further by analyzing solutions made manually and is made to verify the developed program.

Pre-studies which were conducted in order to decide which programming language would be the best choice for line balancing methods’ application came out with the result that MATLAB, from between C, C++, C# and Java, would be the best software choice. The main reason for this choice is that MATLAB is a powerful matrix operation software with a powerful user interface designing tool and has the tools to make development program to be used universally in every computer.

When the researches were investigated, it is clearly seen that, this study is the first research on using computer program for solving assembly line balancing problem.

The purpose of this paper is to investigate the factors effecting ultrasonic seam tensile properties.

In this study, 100 percent polypropylene and 100 percent polyester spunbond and meltblown nonwoven fabrics were sewn by using ultrasonic sewing machine with different rollers which have two, three and four rows. Seam tensile properties of the sewn nonwoven fabrics were investigated. Four-Level Nested Anova Design was applied to the data by using Minitab 15 software program.

Higher seam strength values were obtained by using four rows roller, PP fiber, spunbond fabric and 50 g/m2 fabric area density for all nonwoven fabrics. Statistical significance was found between fabric area density, roller rows and seam tensile strength properties and between fabric type, roller rows and seam elongation at break values.

When the authors look at the studies related to ultrasonic sewing, several researchers studied on welding parameters of ultrasonic sewing but very limited studies were performed on assembling of nonwoven fabrics with ultrasonic sewing. Therefore effect of production methods of nonwoven fabrics on the properties of ultrasonic sewing such as seam strength and elongation at break should be investigated.

The purpose of this paper is to examine the effects of perfume on cotton fabrics and satisfy the perfume user’s curiosity on this issue.

In this study, the selected perfume was applied on woven and knitted cotton fabric samples in order to investigate the effects of perfume on mechanical and colour properties of the fabrics. For this purpose the chosen perfume was applied in two different amounts (four spraying and eight spraying) from the same distance to the fabric surface. Then the fabric samples were left for 24 hours in order to fulfill the daily usage conditions. Samples were evaluated in terms of tensile strength, pilling and abrasion tests, respectively. Colour measurement test was performed for investigating the fading effect of the perfume and FTIR analysis was carried out for examining the chemical changes.

Result of the study revealed that perfume did not have any effects on tensile strength properties of cotton knitted and woven fabrics and caused serious decrease in pilling and abrasion values and negatively affected colour characteristics of fabrics.

In literature there was no study investigating the effect of perfume on mechanical and colour properties of garment. Thus this study will be the first concerning this issue.