PRIMARY PROCESS SELECTION AND PROCESS SEQUENCING AS THE PART OF PROCESS PLANNING
The field of our research is defining the main criteria for selection of primary processes and types of operations in production. Selection of primary process is based on nature of material, quantity, form complexity of the part, part size/mass and some other factors. Type and sequence operation are results of influence different factors as product shape, surface roughness and tolerance. In application will be used some aspects of knowledge base. Application will enable users to better understand procedure of selection primary process and sequence operations with possible additional technological gradation support. Self learning and testing of students is included in application. In application are used IT technologies of Visual Basic.NET.
PROCESS PLANNING APPLICATION AND INTERNET CONNECTION
This work is a part of the project creating the technological database necessary for improvement of process planning and connection database through SQL server by Internet environment. Developed web site for Database System and Process Planning is useful especially during development student’s project’s of technological process inside fields Process Planning, Production and Operations Management. Here we have elaborated the first phase of selecting tool machines, tools, operations and initial material on the basis of the chosen criteria.We have indicated the problems of selection and the possibility of working out a solution. The Internet technology gives us the possibility to share our data with many users and a chance to improve the elements of Virtual Manufacturing
Evaluation of Impact of Yarn Count and Stitch Length on Pilling, Abrasion, Shrinkage and Tightness Factor of 1 ? 1 Rib Cotton Knitted Fabrics
This study investigates the impact of yarn count and stitch length of 100% cotton knitted fabrics. 1 × 1 ribs structured fabrics were used in this research work. The stitch length 2.50 mm, 2.52 mm, 2.60 mm, 2.70 mm, 2.80 mm and 2.96 mm were used of the yarn count of 26Ne, 28Ne and 36Ne. The areal densities of the grey fabrics were in various amounts. The impacts of yarn count and stitch length were measured concerning pilling resistance, abrasion resistance, and shrinkage and tightness factor. The result showed that the fabric pilling grade decreased while number of cycle increased. Abrasion resistance decreased but length wise shrinkage increased despite the fact that the stitch length increased. The results also exposed that the tightness factor of the fabric increased with the increase of the stitch length in both dyeing and washing state and finished state compared to grey state for the yarn count 26Ne and homogeneous result not found for yarn count 28Ne and 36 Ne. Evaluation of Impact of Yarn Count and Stitch Length on Pilling, Abrasion, Shrinkage and Tightness Factor of 1 × 1 Rib Cotton Knitted Fabrics