The Paton Welding Journal, 2009, №05



2009 №05 (02)

2009 №05 (04)

---

TPWJ, 2009, #5, 15-17 pages  
STRESS-STRAIN STATE OF WELDED JOINTS ON POLYMER PIPES PRODUCED BY BUTT WELDING AT AN ANGLE


Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 5, 2009 (May)
Pages                      15-17
 
 
Authors
E.S. NIKONOVA, N.G. KORAB and V.Yu. KONDRATENKO
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
The stress-strain state of butt welded joints made at different angles was studied, and distribution of equivalent stresses across the weld section was calculated. The ranges of angles to the lower generatrix in butt welding were determined, within which it is necessary to mount additional hold-down devices to level the existing gradient of stresses in the weld. A new technological solution was found in the form of a device for welding thermoplastic pipes, for which a patent of Ukraine was granted.
 
 
Keywords: polymer products, welded joints, butt welding, fittings, welded structure strength, investigation of stress-strain state, device for welding thermoplastic pipes
 
 
Received:                06.11.08
Published:               28.05.09
 
 
References
1. Esaulenko, G.B., Kondratenko, V.Y. (1992) Morphologie und Eigenschaften von Stumpfschweissungen an polymeren Werkstoffen. In: Kunststoffschweissen und Kleben'92. Dusseldorf: DVS, 3-5.
2. Nikonova, E.S. (2006) Ensuring service reliability of pipeline transport systems. In: Proc. of 4th Sci.-Pract. Seminar on Welds of Polymer Materials as a Reinforcing Element of Pipeline Structure (Kiev, 11 April, 2006). Kiev: Ekotekhnologiya.
3. Nikonova, K.S., Kondratenko, V.Yu., Goncharenko, V.V. et al. (2007) Experimental investigations of physico-mechanical properties of butt welded joints of polymer materials and recommendations for welding process optimization. In: Proc. of 2nd Sci.-Pract. Seminar on Welding and Related Processes in Industry (Kiev, 17 April, 2007). Kiev: Ekotekhnologiya.
4. (1985) Recommendations on calculation and design of pipelines from thermoplastic materials: TsNIIE of engineering equipment: NPO Plastic. Moscow: Strojizdat.
5. Shestopal, A.N., Mineev, E.A. (1986) Reference book on welding and adhesion bonding. Ed. by A.N. Shestopal. Kiev: Tekhnika.
6. Gondlyakh, O.V., Sakharov, O.S., Sivetsky, V.I. et al. (2006) CAM. Program complex APROX in calculations of machines and apparatuses of chemical productions. Kyiv: Poligraph Consulting.
7. Goncharenko, V.V., Kovalenko, I.V., Nikonova, E.S. Device for welding of pipes from thermoplastic materials. Pat. 24692 Ukraine. Publ. 10.07.2007.

---