{"id":320338,"date":"2024-10-19T22:08:55","date_gmt":"2024-10-19T22:08:55","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-165492004\/"},"modified":"2024-10-25T20:31:11","modified_gmt":"2024-10-25T20:31:11","slug":"bs-iso-165492004","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-165492004\/","title":{"rendered":"BS ISO 16549:2004"},"content":{"rendered":"
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
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3<\/td>\n | TitlePage – Textiles\ufffd\u2014 Unevenness of textile strands\ufffd\u2014 Capacitance method <\/td>\n<\/tr>\n | ||||||
5<\/td>\n | TableofContent – Contents Page <\/td>\n<\/tr>\n | ||||||
6<\/td>\n | Foreword – Foreword <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | Introduction – Introduction <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | Scope – 1\ufffd\ufffd\ufffd Scope NormativeReference – 2\ufffd\ufffd\ufffd Normative references <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | Clause1 – 4\ufffd\ufffd\ufffd Principle UntitledSubclause2 – 4.1\ufffd\ufffd\ufffd A specimen is passed between two plates of a capacitor causing change… <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | UntitledSubclause2 – 4.2\ufffd\ufffd\ufffd The fibre dielectric constant is also a factor determining the capaci… UntitledSubclause2 – 4.3\ufffd\ufffd\ufffd Several studies have been conducted over the years, see Reference UntitledSubclause2 – 4.4\ufffd\ufffd\ufffd The value of unevenness has meaning only if both UntitledSubclause2 – 4.5\ufffd\ufffd\ufffd There are two possible expressions for unevenness, UntitledSubclause2 – 4.6\ufffd\ufffd\ufffd If mass is distributed near to \u201cnormal\u201d, then the ratio of UntitledSubclause2 – 4.7\ufffd\ufffd\ufffd When UntitledSubclause2 – 4.8\ufffd\ufffd\ufffd Unevenness testers usually contain a spectrogram, which analyses the … UntitledSubclause2 – 4.9\ufffd\ufffd\ufffd Unevenness testers usually contain a counter for yarn imperfections, … UntitledSubclause2 – 4.10\ufffd\ufffd\ufffd Unevenness is a fundamental feature of yarn construction. It influen… Clause1 – 5\ufffd\ufffd\ufffd Apparatus UntitledSubclause2 – 5.1\ufffd\ufffd\ufffd Different types of apparatus are in use for measuring strands made of… UntitledSubclause2 – 5.2\ufffd\ufffd\ufffd The apparatus consists of the following elements: <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | UntitledSubclause2 – 5.3\ufffd\ufffd\ufffd To calibrate, use the procedure built into the instrument if possible… Clause1 – 6\ufffd\ufffd\ufffd Atmosphere for conditioning and testing Clause1 – 7\ufffd\ufffd\ufffd Sampling UntitledSubclause2 – 7.1\ufffd\ufffd\ufffd Select laboratory samples in one of the following two ways: UntitledSubclause2 – 7.2\ufffd\ufffd\ufffd The following minimum numbers of packages are recommended: UntitledSubclause2 – 7.3\ufffd\ufffd\ufffd The material shall be unwound directly from the package during testin… UntitledSubclause2 – 7.4\ufffd\ufffd\ufffd Test the number of specimens per package given in the material specif… <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | UntitledSubclause2 – 7.5\ufffd\ufffd\ufffd Test the following lengths of test specimens. These are minimum value… Clause1 – 8\ufffd\ufffd\ufffd Procedure Subclause2 – 8.1\ufffd\ufffd\ufffd Setting of the apparatus Subclause2 – 8.2\ufffd\ufffd\ufffd Setting of the diagram scale Subclause2 – 8.3\ufffd\ufffd\ufffd Selection of the condenser’s measuring slot Subclause2 – 8.4\ufffd\ufffd\ufffd Selection of running speed Subclause2 – 8.5\ufffd\ufffd\ufffd Guiding facilities Subclause2 – 8.6\ufffd\ufffd\ufffd Twisting device <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | Subclause2 – 8.7\ufffd\ufffd\ufffd Plot representing the linear density along the strand Subclause2 – 8.8\ufffd\ufffd\ufffd Preliminary run Subclause2 – 8.9\ufffd\ufffd\ufffd Test run Clause1 – 9\ufffd\ufffd\ufffd Calculations and expression of results UntitledSubclause2 – 9.1\ufffd\ufffd\ufffd If several packages were tested with one reading for each package, ca… UntitledSubclause2 – 9.2\ufffd\ufffd\ufffd If desired, determine the variance-length curve. If the instrument do… UntitledSubclause2 – 9.3\ufffd\ufffd\ufffd Express the incidence of imperfections as the number per kilometre. UntitledSubclause3 – 9.3.1\ufffd\ufffd\ufffd Express the incidence of thick places as the number for which the l… UntitledSubclause3 – 9.3.2\ufffd\ufffd\ufffd Express the incidence of thin places as the number for which the li… UntitledSubclause3 – 9.3.3\ufffd\ufffd\ufffd Express the incidence of neps as the number which exceeds a reading of Clause1 – 10\ufffd\ufffd\ufffd Test report <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | AnnexInformative – Other methods for the determination of unevenness Clause1 – A.1\ufffd\ufffd\ufffd Principles of test methods Clause1 – A.2\ufffd\ufffd\ufffd Visual assessment (suitable for yarns) Subclause2 – A.2.1\ufffd\ufffd\ufffd Yarn kept static and wound around a panel Subclause2 – A.2.2\ufffd\ufffd\ufffd Running yarn Clause1 – A.3\ufffd\ufffd\ufffd Determination of mass Subclause2 – A.3.1\ufffd\ufffd\ufffd Cutting and weighing <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | Subclause2 – A.3.2\ufffd\ufffd\ufffd Method using squeezing (applicable mainly to tops and slivers) Clause1 – A.4\ufffd\ufffd\ufffd Optical methods (suitable for yarns) <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | Bibliography – Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Textiles. Unevenness of textile strands. Capacitance method<\/b><\/p>\n |