Miyako Inoda

Mechanical Properties of Warp-Knitted, Fabric-Reinforced Composites

A study of the mechanical properties of basic warp-knitted, fabric-rein forced composites is presented. Three basic knitted structures have been adopted. It is found that knitted structures greatly affect the in-plane anisotropic nature, tensile strength, and modulus of warp-knitted, fabric-reinforced composites. The density of the knitted structure, which influences the tensile properties has also been taken into account. From the observation of fracture surface, two fracture modes are suggested: fracture that occurs at the extreme low volume fraction region in the course direction, and fracture that occurs due to stress concentration at the loop interlocking region in the wale direction

Comparison of Braiding Skills Between Expert and Non-experts by Eye’s Movement Measurement

A braiding rope is the Japanese traditional rope that a quality and beauty of them have depended on the skill and experience of a braider. In this research, the skill of a expert and two non-experts who practice the braiding everyday and every week, respectively were measured and compared through the eye’s movement measurement and observed the braiding rope quality. The measurement was carried out every month for three times. It was found that the expert show the constant of eye’s focus at the center of marudai plate and reveled a complete pattern of braiding rope. For two non-experts, their eye’s movement wobbled around marudai plate for all trials. However, the braiding speed and quality were developed by the regular training. There are no the defects in the ropes in the trial 2 and 3.

Comparison Knitting Skills Between Experts and Non-experts by Measurement of the Fabric Quality

This research focused on the developing the capacity of knitting skill. The comparison of skill between the experts with non-experts was studied. The movement of arms was measured to investigate the effect of arm movement on quality of knitting fabric. The experiment was carried out with a video camera to record and analyze the differences of the knitting speed and manner in knitting. The quality of the fabric was measured by a loop of fabric to see the consistency of the loop fabric, which is important for beautiful fabrics. The results revealed the procedure used to crochet knitting machines were very different in appearance, knitting and speed. The quality of the fabric was beautiful, similar to the use of the knitting as machine knitting. The main difference between them was only part of the seams.

Study on the Effect of Arm Movement in Knitting Process on Knitting Quality

This research interested on the developing the ability of knitting skill. The comparison of skill between the experts with non-experts was studied. The movement of arms was measured to examine the effect of arm movement on quality of knitting fabric. The experiment was carried out with a video camera to record and analyze the differences of the knitting speed and manner in knitting. The quality of the fabric was measured by a loop of fabric to see the consistency of the loop fabric, which is important for beautiful fabrics. The results revealed the procedure used to crochet knitting machines were very different in appearance, knitting and speed. The quality of the fabric was beautiful, similar to the use of the knitting as machine knitting. The main difference between them was only part of the seams.

Comparison Knitting Skills Between Experts and Non-experts by Measurement of the Arm Movement

This research focused on the developing the capacity of knitting skill. The comparison of skill between the experts with non-expert was study. The movement of arms was measure to investigate the effect of arm movement on quality of knitting fabric. The experiment was carried out on a video camera to record and analyze the differences of the knitting speed and manner in knitting. The quality of the fabric is measured by a loop of fabric to see the consistency of the loop fabric is important and beautiful fabrics. The result is a procedure used to crochet knitting machines are very different in appearance, knitting and speed. The quality of the fabric is beautiful, similar to the use of a knitting machine knitting. The main difference between them is only part of the seams.

Mechanical Properties of Textile Hybrid Composite

In order to fabricate thick composite laminates, the large number of stacking process is generally required. The thickness was easily increased by placing knitted fabric with bulky characteristic. Textile hybrid composite consisting of woven fabric, knitted fabric and braided fabric can be a new concept of textile composites. In this paper, the impact property of textile hybrid composites was investigated. Two woven fabrics were placed at outer layer, and one or two knitted fabric was placed at core layer, in textile hybrid composite. The energy for failure propagation in textile hybrid composite was higher, while in elastic energy calculated from elastic recovery was lower. The absorbed impact energy was higher compared with strain energy obtained from static bending test.