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In this paper, we report evaluation of thin stretched thread lengths in spinnability simulations. There are many previous studies related to viscoelastic fluid, however, there are few studies that represent "spinnability", which is a feature that the material is stretched thin and long. Although some studies represented thread-forming property, they did not evaluate the stretched length of the material. We also tried to represent spinnability of viscoelastic fluid, however, the simulation results were not similar to a real material. Therefore, we try to perform spinnability simulations with three kinds of models, and evaluate stretched thread lengths by comparison of simulation results with a literature datum.

A lithium iron phosphate battery has superior rapid charging performance and is suitable for electric vehicles designed to be charged frequently and driven short distances between charges. This paper describes the results of testing conducted to evaluate the capacity loss characteristics of a newly developed lithium iron phosphate battery. These results confirmed that, in the assumed use temperature range of the battery, the degree of storage capacity loss (referred to below as “calendar capacity loss”) over 120 days was approximately 4% and the degree of capacity loss on cycle test over 500 cycles was approximately 6%.

From a July 1987 symposium in Monterey, California, 11 invited papers discuss the latest techniques for characterizing composites and ceramics, and report evaluation findings on electronic materials, ceramics, composites, surface treatments, and new alloys. Annotation copyright Book News, Inc. Portl

In order to assess the growth rates of initial cracks in inelastic notch fields by cyclic loads, it is inevitable to apply clasto-plastic fracture mechanics. In the present report, the evaluating method of ΔJ was developed for the initial fatigue cracks in the inelastic notch fields. The interpolation function for calculation of J-integral by Willson was modified for application to the notch fields. In the calculation of J-integral stress gradient was considered in the notch fields without cracks.Fully reversed fatigue tests were carried out on the notched strips of HT80 and A5083-O. The crack closure behaviors in the notch fields were observed. The approximating equations were formed to predict crack opening ratios in the notch fields. The fatigue crack growth rates in the notch fields were plotted to ΔJ. As the results, it was cleared that the present ΔJ is applicable to assess the fatigue cracks in both the elastic and inelastic notch fields. And then, the phisical meaning of ΔJ was discussed.