BS ISO 29221:2014
$142.49
Plastics. Determination of mode I plane-strain crack-arrest toughness
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 30 |
This International Standard specifies a method for the determination of the plane-strain crack-arrest fracture toughness, Kla, of polymeric materials by using a side-grooved, crack-line-wedge-loaded compact tension specimen to obtain a rapid crack run-arrest segment of flat-tensile separation with a satisfactory crack front. This International Standard employs a static fracture analysis determination of the stress intensity factor at a short time after crack arrest. The estimate is denoted as Ka and when certain size requirements are met, the test result provides an estimate, termed as Kla, of the plane-strain crack-arrest toughness of the polymer. The specimen size requirements provide for in-plane dimensions large enough to allow the specimen to be modelled by linear elastic analysis. If the specimen does not exhibit rapid crack propagation and arrest, Ka cannot be determined.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 6 | Foreword |
| 7 | Introduction |
| 9 | Section sec_1 Section sec_2 Section sec_3 Section sec_3.1 Section sec_3.2 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | Section sec_3.3 Section sec_3.4 Section sec_4 Section sec_5 Section sec_5.1 Section sec_5.2 4 Principle 5 Apparatus 5.1 General 5.2 Loading arrangement |
| 11 | Table tab_a Figure fig_1 |
| 12 | Figure fig_2 Section sec_5.3 5.3 Displacement gauge |
| 13 | Table tab_b Figure fig_3 Section sec_6 Section sec_6.1 Section sec_6.2 6 Test specimen 6.1 General 6.2 Dimensions |
| 14 | Table tab_c Figure fig_4 Section sec_6.3 6.3 Starter notch |
| 15 | Table tab_d Figure fig_5 Section sec_7 Section sec_7.1 Section sec_7.2 Section sec_7.3 7 Procedure 7.1 Measurements of specimen dimensions 7.2 Conditioning 7.3 Loading |
| 16 | Table tab_e Figure fig_6 Section sec_7.4 Section sec_7.5 7.4 Displacement measurement 7.5 Arrested crack length (aa) measurement |
| 17 | Figure fig_7 Section sec_7.6 7.6 Number of tests |
| 18 | Section sec_8 Section sec_8.1 Section sec_8.2 8 Calculation and validation of results 8.1 Calculation of Kο and KQa 8.2 Validity requirement |
| 19 | Table tab_1 Section sec_9 Section sec_10 Section sec_10.1 9 Precision 10 Test report 10.1 Test details |
| 20 | Section sec_10.2 Section sec_10.3 Section sec_10.4 10.2 Calculations 10.3 Validity requirements (see Table 1) 10.4 Photographic record of fracture surface and descriptive comments (optional) |
| 21 | Annex sec_A Table tab_g Figure fig_A.1 Annex A (informative) Determination of the initial crack length, ao, when using the chevron notch |
| 22 | Figure fig_A.2 |
| 23 | Annex sec_B Table tab_h Figure fig_B.1 Annex B (informative) Procedure for measuring the arrested crack length (ao) |
| 24 | Annex sec_C Figure fig_C.1 Figure fig_C.2 Figure fig_C.3 Annex C (informative) Fracture surface acceptability |
| 25 | Annex sec_D Table tab_D.1 Annex D (informative) Comment on precision statement |
| 26 | Reference ref_1 Reference ref_2 Reference ref_3 Reference ref_4 Reference ref_5 Reference ref_6 Reference ref_7 Reference ref_8 Reference ref_9 Reference ref_10 Reference ref_11 Reference ref_12 Reference ref_13 Reference ref_14 Reference ref_15 Reference ref_16 Bibliography |
| 27 | Reference ref_17 Reference ref_18 |
