| Titre : |
A comparison of two tear tests for leather |
| Type de document : |
texte imprimé |
| Auteurs : |
R. Guy, Auteur ; A.-G. Marriott, Auteur |
| Année de publication : |
1975 |
| Article en page(s) : |
p. 30-40 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Cuirs et peaux -- Propriétés mécaniques
Déchirure (mécanique)
Essais de résilience
Essais dynamiques
Etudes comparatives
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
It has long been accepted that high correlation exists between the tearing loads obtained from the Baumann tear test (IUP/8) and tha ALCA test E 10, slightly modified by SATRA and designated PM 30. Recently, however, the tearing energy has been put forward as a better criterion of tear resistance. The work described in this paper has therefore been concerned primarily with comparing various tearing criteria for the two test specimen shapes. It is concluded that the tearing energies obtained from the two tests correlate well with each other, although some semichrome leathers are anomalous. |
| Note de contenu : |
- INTRODUCTION : A brief review of tear testing - Correlation studies of the tear tests
- EXPERIMENT I : Plan - Parameters measured - Statistical analysis and data processing - Results and discussion - Conclusions for Experiment 1
- THEORETICAL CONSIDERATION
- EXPERIMENT II : Factors varied - Results and discussion
- CONCLUSIONS FOR EXPERIMENT II
- Table 1 : Maximum tearing load (kg)
- Table 3 : Maximum tearing load per unit thickness for the two test methods (kg mm-1)
- Table 4 : Mean tearing loads for the four leathers and test methods (kg)
- Table 5 : Mean tearing load per unit thickness for the two test methods (kg mm-1)
- Table 7 : Mean energies of initiation for the four leathers and two test methods (J x 10 4)
- Table 8 : Total tearing energy per unit distance morved by tearing force, for the two methods and four leathers (kg)
- Table 9 : The maximum tearing load (kg) for the four leathers, two specimen shapes and four sizes of hole terminating the cut
- Table 10 : Maximum tear load (kg) for the two specimen shapes and the four leathers
- Table 11 : The average maximum tearing loads (kg) for the two specimen shapes and four sizes ofhole terminating the cut
- Table 12 : The average maximum tearing loads (kg) for the two sampling locations of the four leathers
- Table 13 : The average mean tearing loads for the four leathers and two basic specimen shapes (kg)
- Table 14 : The average initiation energies of tear (J x 10 4) for the four leathers, two test speciments and four sizes of holes
- Table 15 : The average initiation energies (J x 10 4) of tear for the four sizes of hole and the two specimen shapes
- Table 16 : The regression constants for energy of initiation versus hole size for four leathers and two specimen shapes
- Table 17 : Dependence of energy of initiation on speed of tearing
- Table 18 : The average total tearing energy per unit distance moved by tearing force for the four leathers, two specimen shapes and four hole sizes (Ag + Ap) tearing distance
- Table 19 : The average total tearing energy per unit distance moved by tearing force for the four leathers and two basic specimen shapes
- Appendix 1 : Analysis of variance of the maximum tearing loads
- Appendix 2 : The anlaysis of variance for the ratio of maximum tearing loads (Rg) |
| En ligne : |
https://drive.google.com/file/d/1AR9VPTxOZaTS_MoSZn3YNZC9bzfXu1wK/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35298 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 59 (Année 1975) . - p. 30-40
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A comparison of two tear tests for leather in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 59 (Année 1975)
