The splitting rates of microfiber in two ways, gap-splitting rate and dislocated-splitting rate were counted within the pictures.

The distinct ways of forming PET/PA composite and sea-island ultra-fine fiber are discussed,as well as distinct techniques in peeling process are introduced.

A concept of dry shrinkage crack probability (C) has been put forward by which the concrete dry shrinkage crack probability could be devided into three levels named as: C≥60%(high risk),40%≤C<60%(medium risk)and C<40%(low risk).

The failure zone model developed by Schapery is adopted to derive simple mechanical relations for predicting cracking velocity when macro cracks stably propagate in asphalt mixtures.

The flattening tests of metallic pipes with or without plate core indicated that (1) when the top and bottom sections of metallic pipes were flattened the results of the two types of tests were the same, (2) in further flattening, the top and bottom sections of hollow metallic pipes were dented and the crack rate was higher than those pipes tested with plate core at the same flattened distance.

Study in splitting rate and dyeing properties of microfiber fabrics;

Meanwhile the research on splitting rate of micro-fiber, cleaning mechanism of micro-fiber fabric and evaluating system of cleaning efficiency are rarely reported.