Study of some factors affecting bending resistance of polyethylene ropes

• Autorzy: Sharrouf A. A. M. , Salem M. M. , Gad M.
• Języki publikacji: EN

Abstrakty

EN

The ease of accomplishing a tight knot in a rope depends mainly on the bending resistance of that rope, hence the bending behaviour of ropes becomes a matter of considerable importance. Reducing the bending resistance of ropes, while retaining their other physical and mechanical properties unchanged is a demand of rope consumers. Unfortunately there is no standardised method to measure the bending resistance of ropes. The bending resistance as a mechanical property depends on many factors, such as the type of material used, the processing methods, and the technical specification of the rope. In the present work, four factors were subjected to study, these being: filament denier twist in the primary strand, twist in the final strand, and percentage distribution of filament between core and sheath. A simple method, similar in principle to that used in the Shirley Fabric Stiffness Tester, was used to measure the bending length of polyethylene ropes. A simple model was derived to calculate the bending resistance of ropes. Multiple regression analysis was used to determine multiple correlation factors, degree of contribution of each factor to the measured properties, and its significant levels. Surface plots are used to demonstrate the shape of the effect of the factors that have significant effects.

Słowa kluczowe

EN

ropes; bending length; bending resistance; polyethylene rope; filament denier; primary strands; final strands

PL

liny; długość gięcia; odporność na zginanie; lina polietylenowa; sploty pierwotne; sploty ostateczne

• Wydawca: Lodz University of Technology, Faculty of Material Technologies and Textile Design
• Czasopismo: Autex Research Journal
• Rocznik: 2008
• Tom: Vol. 8, no. 4
• Strony: 111--119
• Opis fizyczny: Bibliogr. 15 poz.

Twórcy

autor

Sharrouf A. A. M.

• Textile Division, National Research Centre, Egypt

autor

Salem M. M.

• Textile Division, National Research Centre, Egypt

autor

Gad M.

• El Sherouk for Synthetic Fibres Co, Ropes Dept. Cairo Egypt

Bibliografia

• 1. M Kamel, “ History of ancient Egyptians arts”, Madbuly Publisher Co, Cairo, 1991.
• 2. Z Escandar, “Industrial material used by ancient Egyptians” Madbuly Publisher Co, Cairo, 1991.
• 3. M Gad, “Improvement of the functional performance of polyethylene ropes” Ph.D, Faculty of applied arts, 1999.
• 4. J Martino,”Modern plastic encyclopedia, 1984.
• 5. ISO 9554, Fibre ropes-General Specification, 1991.
• 6. ISO 1969, Ropes-Polyethylene-Specification, 1990.
• 7. ISO 1140, Ropes-Polyamide Specification, 1990.
• 8. ISO 1181, Ropes-Manila Specification, 1990.
• 9. ISO 1344, Ropes-Polypropylene Specification, 1990.
• 10. S Backer and Seo, 3rd Japan-Austria Symposium, Kyoto Japan, 5-7 Sep,1985.
• 11. Hwai Chung Wu, JTI, 1993,84,No.2 p199-213.
• 12. JWS Hearle, “Structural mechanics of fibres, yarns, and fabrics”, Wiley Interscience, New York, 1969.
• 13. WJ Person, “Modern plastic encyclopedia”, 1988.
• 14. ASTM, D 1388-64, Standard test methods for stiffness of fabrics, 1975.
• 15. JE Booth, “Principles of Textile Testing”, Newnes-Butterworths, London ,1969.