20.500.12556/RUL-129898 Uporaba mešanih porazdelitev za popis pretržnih sil obrabljene dinamične plezalne vrvi Usage of mixture distribution to model the breaking forces of a worn dynamic climbing rope Problematika določitve dobe trajanja dinamičnih plezalnih vrvi je zaradi velikega števila faktorjev, ki vplivajo na obrabljenost, zelo široko in kompleksno področje. V tej zaključni nalogi smo se odločili, da bomo preverili, kolikšno nosilnost imajo že obrabljene plezalne vrvi. To smo storili z nateznimi testi vrvi, kjer smo pridobili pretržne sile. Najprej je bilo treba razviti orodje, ki nam je omogočilo izvedbo preizkusov. Nato sta sledili izvedba preizkusov ter statistična analiza rezultatov. Meritve in analiza so pokazali, da je vrv v centralnem delu ohranila nosilnost povsem nove plezalne vrvi. V nasprotju s tem pa je na krajnih intervalih vrvi prišlo do padca v nosilnosti okoli 40 % v primerjavi z novo vrvjo. Rezultati so pokazali razliko v nosilnosti tudi med enim in drugim koncem vrvi, kar nas pripelje do zaključka, da je bila vrv uporabljena nesimetrično. Iz tega ponovno sledi, da sta ravno uporaba in obraba tisti, ki zmanjšujeta nosilnost plezalne vrvi, ne pa njena starost. The problem of determining the life span of dynamic climbing ropes is a very wide and complex area due to the large number of factors that affect level of worn. In this final task, we decided to check the load capacity of already worn climbing ropes. We did this with the tensile rope tests, where we gained breaking forces. Firstly, it was necessary to develop a tool that allowed us to perform tests. It was followed by implementation of tests and the statistical analysis of the results. Measurements and analysis showed that the rope in the central part maintained the load capacity of a completely new climbing rope. In contrast, at the edge intervals of the rope, there was a drop in load capacity of around 40 % compared to the new rope. The results also showed a difference in load capacity between one and the other ends of the rope, leading us to conclude that the rope was used asymmetrically. It follows once again that it is precisely the use and worn that reduces the load capacity of the climbing rope and not its age. plezalna vrv pretržna sila doba trajanja stopnja obrabljenosti nosilnost mešane porazdelitve REBMIX algoritem climbing rope breaking force life span level of worn load capacity mixture distribution REBMIX algorithm true false false [U. Kovče] Slovenski jezik Angleški jezik Zaključna naloga 2021-09-09 08:30:39 2021-09-09 08:30:41 2023-12-13 10:36:05 0000-00-00 00:00:00 2021 0 Ljubljana 0 XIV, 34 str., [2] str. pril. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 620.172:539.3:679.72(043.2) 233139 82691843 10491.pdf 10491.pdf 1 CCB8041FEA75BB2CF86FB4E269DC795A dfa91f51cd8c39a40ecbda175f110a3d68d209c313686d609107a45b341eaa4f 35518afe-1137-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146940 10492.pdf 10492.pdf 1 4461AA1FADFB99830D7F103884585319 a54c8fad014819dfb186e1f1c3e7bdec3bd8c16617b6c706514f56973f817a27 3551ee6a-1137-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146941 10493.pdf 10493.pdf 1 E6341257917CB53BCFA60F6F27FE1655 14f30c63ae16c1df972da75fa68496eb0ba10a483bbab46e03c54cf44f254c61 355218b5-1137-11ec-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=146942 Fakulteta za strojništvo 0 0 0