BS ISO 16549:2004:2005 Edition
$102.76
Textiles. Unevenness of textile strands. Capacitance method
| Published By | Publication Date | Number of Pages |
| BSI | 2005 | 20 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | TitlePage – Textiles�— Unevenness of textile strands�— Capacitance method |
| 5 | TableofContent – Contents Page |
| 6 | Foreword – Foreword |
| 7 | Introduction – Introduction |
| 9 | Scope – 1��� Scope NormativeReference – 2��� Normative references |
| 10 | Clause1 – 4��� Principle UntitledSubclause2 – 4.1��� A specimen is passed between two plates of a capacitor causing change… |
| 11 | UntitledSubclause2 – 4.2��� The fibre dielectric constant is also a factor determining the capaci… UntitledSubclause2 – 4.3��� Several studies have been conducted over the years, see Reference UntitledSubclause2 – 4.4��� The value of unevenness has meaning only if both UntitledSubclause2 – 4.5��� There are two possible expressions for unevenness, UntitledSubclause2 – 4.6��� If mass is distributed near to “normal”, then the ratio of UntitledSubclause2 – 4.7��� When UntitledSubclause2 – 4.8��� Unevenness testers usually contain a spectrogram, which analyses the … UntitledSubclause2 – 4.9��� Unevenness testers usually contain a counter for yarn imperfections, … UntitledSubclause2 – 4.10��� Unevenness is a fundamental feature of yarn construction. It influen… Clause1 – 5��� Apparatus UntitledSubclause2 – 5.1��� Different types of apparatus are in use for measuring strands made of… UntitledSubclause2 – 5.2��� The apparatus consists of the following elements: |
| 12 | UntitledSubclause2 – 5.3��� To calibrate, use the procedure built into the instrument if possible… Clause1 – 6��� Atmosphere for conditioning and testing Clause1 – 7��� Sampling UntitledSubclause2 – 7.1��� Select laboratory samples in one of the following two ways: UntitledSubclause2 – 7.2��� The following minimum numbers of packages are recommended: UntitledSubclause2 – 7.3��� The material shall be unwound directly from the package during testin… UntitledSubclause2 – 7.4��� Test the number of specimens per package given in the material specif… |
| 13 | UntitledSubclause2 – 7.5��� Test the following lengths of test specimens. These are minimum value… Clause1 – 8��� Procedure Subclause2 – 8.1��� Setting of the apparatus Subclause2 – 8.2��� Setting of the diagram scale Subclause2 – 8.3��� Selection of the condenser’s measuring slot Subclause2 – 8.4��� Selection of running speed Subclause2 – 8.5��� Guiding facilities Subclause2 – 8.6��� Twisting device |
| 14 | Subclause2 – 8.7��� Plot representing the linear density along the strand Subclause2 – 8.8��� Preliminary run Subclause2 – 8.9��� Test run Clause1 – 9��� Calculations and expression of results UntitledSubclause2 – 9.1��� If several packages were tested with one reading for each package, ca… UntitledSubclause2 – 9.2��� If desired, determine the variance-length curve. If the instrument do… UntitledSubclause2 – 9.3��� Express the incidence of imperfections as the number per kilometre. UntitledSubclause3 – 9.3.1��� Express the incidence of thick places as the number for which the l… UntitledSubclause3 – 9.3.2��� Express the incidence of thin places as the number for which the li… UntitledSubclause3 – 9.3.3��� Express the incidence of neps as the number which exceeds a reading of Clause1 – 10��� Test report |
| 16 | AnnexInformative – Other methods for the determination of unevenness Clause1 – A.1��� Principles of test methods Clause1 – A.2��� Visual assessment (suitable for yarns) Subclause2 – A.2.1��� Yarn kept static and wound around a panel Subclause2 – A.2.2��� Running yarn Clause1 – A.3��� Determination of mass Subclause2 – A.3.1��� Cutting and weighing |
| 17 | Subclause2 – A.3.2��� Method using squeezing (applicable mainly to tops and slivers) Clause1 – A.4��� Optical methods (suitable for yarns) |
| 18 | Bibliography – Bibliography |
