Investigation of the Fabric Construction of the Effect on Pilling and Abrasion in Yarn Dyed Cotton Fabrics
For this study, yarn dyed cotton woven fabrics were produced in three different yarn counts and three different patterns, then pre-treatment processes were applied to these fabrics. The physical properties and pilling and mass losses with abrasion performance properties of these fabrics were determined experimentaly according to relevant standarts. The obtained results were evaluated and fabric construction of the effect on pilling and abrasion was analyzed.
The Assessment of Fabric Wear and Handle Caused by Increments of Accelerator Abrasion in Dry Conditions Part I: Changes in Some Fabric Mechanical Properties as a Result of Abrasion
In this paper, sane aspects of the physical and mechanical properties of woven fabrics, such as mass, thickness, stiffness, air-permeability, and compression, are considered as criteria for assessing the effects of damage caused by changes in frictional abrasion when the Accelerator Tester is used. Two 100% cotton woven fabrics were used in the experiment. Results show that changes occurred in fabric properties as a result of incremental wear. The mass per square metre, coercive couple, and flexural rigidity show a consistent decrease, while thickness, air–permeability, and compression show inconsistent increases with increasing time of abrasion.
New approach to vision-based BGA package inspection
Ball grid array (BGA) techniques have developed very fast due to the advantages of more I/O ports, small size, and so on. In this paper, a vision-based algorithm for BGA package inspection is proposed to accurately estimate center and diameters of solder-balls of BGA packages, so that defects of BGA packages, such as missing or extra balls, oversize or undersize balls, over-height or under-height balls, and pitch can be detected for ensuring the quality of BGA packages.