Back
 MSA  Vol.7 No.5 , May 2016
Weibull Statistics Strength Investigation of Synthetic Link Chains Made from Ultra-Strong Polyethylene Fibers
Abstract:

Chains are typically used for tension load transfer. They are very flexible and allow easy length adjustment by hooking at the links. Steel is the traditional material for chains. Recently, synthetic link chains made from ultra-strong polyethylene fibers, branded as Dyneema®, are commercially available. These chains offer a highly improved strength to weight ratio. So far, one type of such chains is available, and it has a Working Load Limit of 100 kN. 50 of such chains, containing 6 links were tested to fracture. The strength of each chain and the location of the failed link were documented during testing for later interpretation. Weibull statistics was applied in order to extrapolate towards the allowable load for very low failure risks (high reliability). Two approaches were used. One extrapolation was based on all results; the other was applied after recognition that the end links failed under a slight negative influence by the connection to the testing equipment. Thus, in fact two populations are mixed, the chains with failing end links and the chains with failing central links. So considering the population without the failing end links is more representative for pure chain behavior without clamping effects. The results from this latter consideration showed a higher Weibull exponent, thus a more realistic extrapolation behavior. Both methods indicate that the reliability at the working load limit of 100 kN is very good.

Cite this paper: Marissen, R. , Wienke, D. , Homminga, R. , Bosman, R. , Veka, K. and Huguet, A. (2016) Weibull Statistics Strength Investigation of Synthetic Link Chains Made from Ultra-Strong Polyethylene Fibers. Materials Sciences and Applications, 7, 238-246. doi: 10.4236/msa.2016.75024.
References

[1]   Marissen, R. (2011) Design with Ultra Strong Polyethylene Fibers. Materials Sciences and Applications, 2, 319-330.
http://dx.doi.org/10.4236/msa.2011.25042

[2]   Meuwissen, M., Glasbergen, D., Kosters, M., Bosman, R. and Smeets, P. (2013) On the Origin of Lifetime Extension for HMPE Ropes in Bending Operations. Conference Proceedings of H. OCEANS 2013 MTS/IEEE - San Diego: An Ocean in Common, San Diego, 23-27 September 2013, 1-10.

[3]   Wienke, D., Bosman, R., Veka, K.M., Marissen, R. and Homminga, R. (2014) Steel Chain Replacement with New TYCAN? Synthetic Link Chains, Made with Dyneema?, The World Strongest Fiber? for Heavy Duty Lashing Tasks. The 8th Aachen-Dresden International Textile Conference, Book of Abstracts, Dresden, 27-28 November 2014, 133.

[4]   Wienke, D., Dirks, C.H. and Jacobs, M. (2008) Chain Comprising a Plurality of Interconnected Links. Patent WO 20081089798.

[5]   Veka, K.M., Rock, A., Wienke, D., Bosman, R., Coolen, S. and Crane, M. (2015) Break Bulk Conference & Trade Show. Antwerp Exhibition Center & Catalogus, Antwerp, Belgium, 18-22 May 2015.

[6]   Bosman, R., Wienke, D., Kersjes, J., Homminga, R., Marissen, R. and Dirks, C.H. (2013) Endless Shaped Article. Patent WO2013186206.

[7]   TYCAN? Chain Homepage.
http://www.tycan.com/tycan-chain/

[8]   Weibull, W. (1951) A Statistical Distribution Function of Wide Applicability. Journal of Applied Mechanics, 18, 293- 297.

[9]   Marissen, R. and Linsen, J. (1999) Variability of the Flexural Strength of Sheet Moulding Compound. Composites Science and Technology, 59, 2093-2100.
http://dx.doi.org/10.1016/S0266-3538(99)00068-8

 
 
Top