On steady-state fibre pull-out II computer simulation

On the basis of Part I of this paper (Zhang X., Liu, H-Y, Mai Y-W, Diaox X. On steady-state fibre pull-out Part I: stress field. Composites Science and Technology, 1999; 59:219-89) we present an extended analysis for the single-fibre pull-out process. The solutions of fibre axial stress, fibre displacement, and applied pull-out stress ver..

On steady-state fibre pull-out I the stress field

An improved theoretical model has been developed for describing the single-fibre pull-out process. With only a very few assumptions, solutions for the stress distribution can be obtained which satisfy all equilibrium equations, boundary conditions and continuity at the fibre/matrix. In the debonded region, a new friction law, in which the..

On steady-state fibre pull-out I the stress field

An improved theoretical model has been developed for describing the single-fibre pull-out process. With only a very few assumptions, solutions for the stress distribution can be obtained which satisfy all equilibrium equations, boundary conditions and continuity at the fibre/matrix. In the debonded region, a new friction law, in which the..

Compositions and processes for the oxidative dyeing of keratin fibers with paraphenylenediamine derivatives and 4-hydroxyindule at basic ph's

A ready-to-use composition for the oxidation dyeing of keratinous fibers, especially of human keratinous fibers such as hair, which comprises, in an alkaline medium (pH>7), an appropriately selected para-phenylenediamine derivative in combination with 4-hydroxyindole and an oxidizing agent, and dyeing processes using this composition. IPC..

Research into the features of producing combined yarn by the air-jet techique

Atechnological process for obtaining combined yarn is analyzed. The process is based on application of air-jet technique with a false twisting effect obtained by a twisting device in the active zone of the drafting device. Equations describing yarn parameters in dependence on the construction of the air-jet device were elaborated. Differe..

Conductive yarn

Disclosed is a novel method for making conductive yarn. The China Textile Institute has developed a technique involving crosswrapping two fine strands of stainless steel around a core yarn. This produces yarn with superior tensile strength that is suitable for applications such as fencing jackets when combined with orthodox non-conducting..

Method and apparatus for stuffer-box crimping synthetic filaments (German)

A process for the stuffer-box crimping of synthetic filament yarns involves sucking in the yarns by means of an air steam and transporting the yarns in the air stream to the stuffer-box. The air stream acts on the yarns at high speed and impinges on them at a specified acute angle. IPC D02G.

Jet texturing nozzle and baffle device

The baffle device has a first plane face and a second rounded face. The air stream and the yarn are deflected roughly at right angles by the first plane face upon exiting the texturing duct TK. After the transition from the first plane face into the second rounded face, the yarn path and the air stream are separated. An extended path is f..

Method and device for treating filament yarn with air

A method of stretch-texturing POY (partially oriented) yarns via an air treatment nozzle is claimed. The invention enables POY to be processed in an air-twister with simultaneous stretch-texturing. IPC D02J D02G.

Tension control system in flase twist texturing machine for producing a double yarn

To provide a tension control system in a false twist texturing machine for producing a doubled yarn wherein the target tension values or allowable ranges of hilament yarns y1 and y2 prior to doubling can be individually set for each filament yarn and wherein based on the results of the detection of the tension of the filament yarn prior t..