BS ISO 22459:2020
$142.49
Fine ceramics (advanced ceramics, advanced technical ceramics). Reinforcement of ceramic composites. Determination of distribution of tensile strength and tensile strain to failure of filaments within a multifilament tow at ambient temperature
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 24 |
This document specifies the conditions for the determination of the distribution of strength and rupture strain of ceramic filaments within a multifilament tow at room temperature by performing a tensile test on a multifilament tow.
This document applies to dry tows of continuous ceramic filaments that are assumed to act freely and independently under loading and exhibit linear elastic behaviour up to failure. The outputs of this method are not to be mixed up with the strengths of embedded tows determined by using ISO 24046 1
Under preparation.
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PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 8 | 4 Principle 5 Significance and use |
| 9 | 6 Apparatus 6.1 Tensile testing equipment |
| 10 | 6.2 Data recording 7 Test specimen 7.1 General 7.2 Window type specimen |
| 11 | 7.3 Cylindrical end type specimen 8 Test specimen preparation 8.1 General |
| 12 | 8.2 Window type specimen 8.3 Cylindrical end type specimen |
| 13 | 8.4 Number of test specimens 9 Test procedure 9.1 Determination of the initial cross-section area 9.2 Determination of the gauge length 9.3 Gripping |
| 14 | 9.4 Selection of strain rate 9.5 Test procedure 9.6 Determination of load train compliance 9.7 Test validity 10 Calculation of results 10.1 Calculation of the load train compliance Cl |
| 16 | 10.2 Calculation of probability of filament rupture Pj from the tests on specimens with a gauge length of 200 mm 10.2.1 Determination of the true origin 10.2.2 Construction of envelope curve and determination of instantaneous compliance Ct,j |
| 17 | 10.2.3 Probability of filament rupture 10.3 Distribution of filament rupture strain 10.3.1 Calculation of filament rupture strain |
| 18 | 10.3.2 Filament rupture strain distribution 10.4 Distribution of filament strength 10.4.1 Initial cross-section area |
| 19 | 10.4.2 Calculation of filament strength 10.4.3 Filament strength distribution |
| 20 | 10.4.4 Average filament strengths 10.4.5 Mean filament strength 11 Test report |
| 21 | Annex A (informative) Abstract of the handbook of mathematical functions |
| 22 | Bibliography |
